$MTRN
MATERION Corp Stock $mtrn

$mtrn Overview Financials Valuation SEC Filings Company Website

2018 Q4 Form 10-K Financial Statement

#000110465720000013 Filed on February 13, 2020

Income Statement

Concept	2018 Q4	2018 Q3	2018 Q2
Revenue	$298.1M	$13.27M	$11.40M
YoY Change	-3.43%	3.1%	-13.95%
Cost Of Revenue	$231.8M	$232.3M	$247.2M
YoY Change	-6.98%	-2.75%	2.56%
Gross Profit	$66.05M	$64.94M	$61.84M
YoY Change	11.98%	16.39%	12.65%
Gross Profit Margin	22.16%	489.45%	542.3%
Selling, General & Admin	$37.70M	$38.87M	$38.47M
YoY Change	3.01%	7.22%	1.44%
% of Gross Profit	57.08%	59.86%	62.22%
Research & Development	$3.400M	$4.250M	$3.860M
YoY Change	-12.82%	23.94%	8.92%
% of Gross Profit	5.15%	6.55%	6.24%
Depreciation & Amortization	$9.000M	$8.200M	$9.100M
YoY Change	-4.26%	-35.43%	-14.15%
% of Gross Profit	13.63%	12.63%	14.72%
Operating Expenses	$45.40M	$43.12M	$42.33M
YoY Change	2.25%	8.67%	2.08%
Operating Profit	$20.65M	$18.67M	$15.19M
YoY Change	41.6%	56.02%	50.39%
Interest Expense	-$600.0K	$613.0K	$667.0K
YoY Change	0.0%	15.01%	-4.03%
% of Operating Profit	-2.91%	3.28%	4.39%
Other Income/Expense, Net	-$41.00M	-$800.0K	-$437.0K
YoY Change	10150.0%	97.04%	9.25%
Pretax Income	-$26.80M	$17.25M	$14.09M
YoY Change	-300.0%	56.49%	55.86%
Income Tax	$3.100M	-$2.713M	$2.944M
% Of Pretax Income		-15.72%	20.9%
Net Earnings	-$20.83M	$19.97M	$11.14M
YoY Change	153.01%	114.23%	52.39%
Net Earnings / Revenue	-6.99%	150.49%	97.73%
Basic Earnings Per Share	-$1.03	$0.99	$0.55
Diluted Earnings Per Share	-$1.03	$0.97	$0.54
COMMON SHARES
Basic Shares Outstanding		20.24M shares	20.22M shares
Diluted Shares Outstanding		20.65M shares	20.59M shares

Balance Sheet

Concept	2018 Q4	2018 Q3	2018 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$70.60M	$53.60M	$42.90M
YoY Change	68.9%	138.22%	131.89%
Cash & Equivalents	$70.65M	$53.61M	$42.90M
Short-Term Investments
Other Short-Term Assets	$23.30M	$19.90M	$19.60M
YoY Change	-5.67%	4.19%	-11.71%
Inventory	$214.9M	$199.9M	$209.2M
Prepaid Expenses
Receivables	$130.5M	$133.9M	$135.7M
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$439.4M	$407.3M	$407.4M
YoY Change	6.91%	5.18%	4.38%
LONG-TERM ASSETS
Property, Plant & Equipment	$251.0M	$253.7M	$256.6M
YoY Change	-1.78%	3.73%	2.52%
Goodwill	$90.66M	$90.76M	$90.70M
YoY Change	-0.05%	1.16%	0.74%
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$7.236M	$7.114M	$6.991M
YoY Change	3.49%	12.71%	13.07%
Total Long-Term Assets	$404.0M	$381.0M	$378.8M
YoY Change	6.27%	-2.72%	-5.1%
TOTAL ASSETS
Total Short-Term Assets	$439.4M	$407.3M	$407.4M
Total Long-Term Assets	$404.0M	$381.0M	$378.8M
Total Assets	$843.3M	$788.4M	$786.2M
YoY Change	6.6%	1.21%	-0.41%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$49.62M	$42.71M	$46.24M
YoY Change	1.15%	-4.4%	0.38%
Accrued Expenses	$33.30M	$28.93M	$27.18M
YoY Change	18.75%	3.52%	5.04%
Deferred Revenue
YoY Change
Short-Term Debt	$823.0K	$807.0K	$798.0K
YoY Change	5.92%	5.22%	-74.59%
Long-Term Debt Due	$823.0K	$800.0K	$800.0K
YoY Change	5.92%	0.0%	-74.19%
Total Short-Term Liabilities	$139.8M	$126.6M	$117.1M
YoY Change	9.97%	11.93%	6.82%
LONG-TERM LIABILITIES
Long-Term Debt	$2.066M	$2.331M	$2.453M
YoY Change	-26.92%	-22.56%	-89.45%
Other Long-Term Liabilities	$14.76M	$13.83M	$14.20M
YoY Change	-0.88%	-27.1%	-19.76%
Total Long-Term Liabilities	$16.83M	$16.16M	$16.66M
YoY Change	-5.03%	-26.48%	-59.33%
TOTAL LIABILITIES
Total Short-Term Liabilities	$139.8M	$126.6M	$117.1M
Total Long-Term Liabilities	$16.83M	$16.16M	$16.66M
Total Liabilities	$156.6M	$142.8M	$133.7M
YoY Change	8.13%	5.69%	-11.17%
SHAREHOLDERS EQUITY
Retained Earnings	$548.4M	$571.4M	$553.5M
YoY Change	2.29%	7.46%	5.56%
Common Stock	$234.7M	$232.8M	$230.8M
YoY Change	5.02%	5.93%	5.42%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$175.4M	$174.5M	$173.8M
YoY Change	5.6%	8.38%	8.11%
Treasury Stock Shares	6.906M shares	6.904M shares	6.912M shares
Shareholders Equity	$586.2M	$536.7M	$515.7M
YoY Change
Total Liabilities & Shareholders Equity	$800.3M	$788.4M	$786.2M
YoY Change	1.17%	1.21%	-0.41%

Cashflow Statement

Concept	2018 Q4	2018 Q3	2018 Q2
OPERATING ACTIVITIES
Net Income	-$20.83M	$19.97M	$11.14M
YoY Change	153.01%	114.23%	52.39%
Depreciation, Depletion And Amortization	$9.000M	$8.200M	$9.100M
YoY Change	-4.26%	-35.43%	-14.15%
Cash From Operating Activities	$27.20M	$19.90M	$37.50M
YoY Change	-15.79%	-43.47%	119.3%
INVESTING ACTIVITIES
Capital Expenditures	-$5.900M	-$4.600M	-$9.300M
YoY Change	-39.18%	-29.23%	78.85%
Acquisitions
YoY Change
Other Investing Activities	-$900.0K	-$1.800M	-$1.700M
YoY Change	-169.23%	1700.0%	325.0%
Cash From Investing Activities	-$6.800M	-$6.400M	-$11.10M
YoY Change	-20.93%	-3.03%	101.82%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-3.200M	-2.700M	-3.200M
YoY Change	-28.89%	-89.2%	-66.67%
NET CHANGE
Cash From Operating Activities	27.20M	19.90M	37.50M
Cash From Investing Activities	-6.800M	-6.400M	-11.10M
Cash From Financing Activities	-3.200M	-2.700M	-3.200M
Net Change In Cash	17.20M	10.80M	23.20M
YoY Change	-10.42%	200.0%	1060.0%
FREE CASH FLOW
Cash From Operating Activities	$27.20M	$19.90M	$37.50M
Capital Expenditures	-$5.900M	-$4.600M	-$9.300M
Free Cash Flow	$33.10M	$24.50M	$46.80M
YoY Change	-21.19%	-41.25%	109.87%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2019	dei	Amendment Flag AmendmentFlag	false
CY2019	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2019	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2019	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2019
CY2019	dei	Entity Central Index Key EntityCentralIndexKey	0001104657
CY2017	mtrn	Entity Wide Revenue Major Customer Threshold EntityWideRevenueMajorCustomerThreshold	0.10
CY2018	mtrn	Entity Wide Revenue Major Customer Threshold EntityWideRevenueMajorCustomerThreshold	0.10
CY2019	mtrn	Lease Hold Improvements Useful Life Maximum LeaseHoldImprovementsUsefulLifeMaximum	Life of lease
CY2019	mtrn	Lease Hold Improvements Useful Life Minimum LeaseHoldImprovementsUsefulLifeMinimum	Life of lease
CY2017	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.395
CY2018	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.415
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.435
CY2018Q4	us-gaap	Common Stock No Par Value CommonStockNoParValue	0
CY2019Q4	us-gaap	Common Stock No Par Value CommonStockNoParValue	0
CY2018Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	60000000	shares
CY2019Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	60000000	shares
CY2018Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	27148000	shares
CY2019Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	27148000	shares
CY2018Q4	us-gaap	Loss Contingency Pending Claims Number LossContingencyPendingClaimsNumber	1	claim
CY2017	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	-13820000	USD
CY2018	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	-13300000	USD
CY2019	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	-4741000	USD
CY2017	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxPortionAttributableToParent	271000	USD
CY2018	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxPortionAttributableToParent	-672000	USD
CY2019	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxPortionAttributableToParent	-5000	USD
CY2018Q4	us-gaap	Preferred Stock No Par Value PreferredStockNoParValue	0
CY2019Q4	us-gaap	Preferred Stock No Par Value PreferredStockNoParValue	0
CY2018Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2019Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2018Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2019Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2018Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	6906000	shares
CY2019Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	6744000	shares
CY2019	dei	Document Type DocumentType	10-K
CY2019	dei	Document Annual Report DocumentAnnualReport	true
CY2019	dei	Document Period End Date DocumentPeriodEndDate	2019-12-31
CY2019	dei	Document Transition Report DocumentTransitionReport	false
CY2019	dei	Entity File Number EntityFileNumber	1-15885
CY2019	dei	Entity Registrant Name EntityRegistrantName	MATERION CORPORATION
CY2019	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	OH
CY2019	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	34-1919973
CY2019	dei	Entity Address Address Line1 EntityAddressAddressLine1	6070 Parkland Blvd
CY2019	dei	Entity Address City Or Town EntityAddressCityOrTown	Mayfield Heights
CY2019	dei	Entity Address State Or Province EntityAddressStateOrProvince	OH
CY2019	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	44124
CY2019	dei	City Area Code CityAreaCode	216
CY2019	dei	Local Phone Number LocalPhoneNumber	486-4200
CY2019	dei	Security12b Title Security12bTitle	Common Stock, no par value
CY2019	dei	Trading Symbol TradingSymbol	MTRN
CY2019	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2019	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2019	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2019	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2019	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2019	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2019	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2019	dei	Entity Small Business EntitySmallBusiness	false
CY2019	dei	Entity Shell Company EntityShellCompany	false
CY2019Q2	dei	Entity Public Float EntityPublicFloat	1368001720	USD
CY2020Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	20405347	shares
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1185424000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1207815000	USD
CY2017	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1139447000	USD
CY2019	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	926280000	USD
CY2018	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	956710000	USD
CY2017	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	926618000	USD
CY2019	us-gaap	Gross Profit GrossProfit	259144000	USD
CY2018	us-gaap	Gross Profit GrossProfit	251105000	USD
CY2017	us-gaap	Gross Profit GrossProfit	212829000	USD
CY2019	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	147164000	USD
CY2018	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	153489000	USD
CY2017	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	144280000	USD
CY2019	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	18271000	USD
CY2018	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	15187000	USD
CY2017	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	13981000	USD
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	11560000	USD
CY2018	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2017	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2019	us-gaap	Other Asset Impairment Charges OtherAssetImpairmentCharges	2581000	USD
CY2018	us-gaap	Other Asset Impairment Charges OtherAssetImpairmentCharges	0	USD
CY2017	us-gaap	Other Asset Impairment Charges OtherAssetImpairmentCharges	0	USD
CY2019	us-gaap	Restructuring Charges RestructuringCharges	785000	USD
CY2018	us-gaap	Restructuring Charges RestructuringCharges	5599000	USD
CY2017	us-gaap	Restructuring Charges RestructuringCharges	644000	USD
CY2019	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-11783000	USD
CY2018	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-15334000	USD
CY2017	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-13893000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	67000000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	61496000	USD
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	40031000	USD
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-3431000	USD
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-42683000	USD
CY2017	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-1452000	USD
CY2019	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-1579000	USD
CY2018	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-2471000	USD
CY2017	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-2183000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	61990000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	16342000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-4504000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	36396000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	11330000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	24945000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	50660000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	20846000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	11451000	USD
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.49
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.03
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.57
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.45
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.01
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.56
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	20365000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	20212000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	20027000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	20655000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	20613000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	20415000	shares
CY2019	us-gaap	Net Income Loss NetIncomeLoss	50660000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	20846000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	11451000	USD
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CY2017	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent	1552000	USD
CY2019	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent	-4000	USD
CY2018	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent	138000	USD
CY2017	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPortionAttributableToParent	-1074000	USD
CY2019	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-13197000	USD
CY2018	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-45049000	USD
CY2017	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	17234000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	12772000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	44703000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-16756000	USD
CY2019	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	63432000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	65549000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-5305000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	50660000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	20846000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	11451000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	41116000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	35524000	USD
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	42751000	USD
CY2019	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	962000	USD
CY2018	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	1009000	USD
CY2017	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	919000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	7170000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	5313000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	4957000	USD
CY2019	mtrn	Amortizationof Retirement Benefit Adjustments AmortizationofRetirementBenefitAdjustments	386000	USD
CY2018	mtrn	Amortizationof Retirement Benefit Adjustments AmortizationofRetirementBenefitAdjustments	5551000	USD
CY2017	mtrn	Amortizationof Retirement Benefit Adjustments AmortizationofRetirementBenefitAdjustments	4865000	USD
CY2019	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-344000	USD
CY2018	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-518000	USD
CY2017	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-234000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	2584000	USD
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CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	20256000	USD
CY2019	us-gaap	Asset Impairment Charges AssetImpairmentCharges	14141000	USD
CY2018	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2017	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2019	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Settlements And Curtailments1 DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1	-3328000	USD
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CY2017	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Settlements And Curtailments1 DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1	0	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	23933000	USD
CY2018	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	7219000	USD
CY2017	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	18484000	USD
CY2019	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-24031000	USD
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-4234000	USD
CY2017	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	9462000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-1418000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-1162000	USD
CY2017	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	11606000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-18575000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	8820000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	34433000	USD
CY2019	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	-2538000	USD
CY2018	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	477000	USD
CY2017	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	4336000	USD
CY2019	mtrn	Increase Decrease In Interest And Taxes Payable IncreaseDecreaseInInterestAndTaxesPayable	-805000	USD
CY2018	mtrn	Increase Decrease In Interest And Taxes Payable IncreaseDecreaseInInterestAndTaxesPayable	435000	USD
CY2017	mtrn	Increase Decrease In Interest And Taxes Payable IncreaseDecreaseInInterestAndTaxesPayable	-514000	USD
CY2019	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-4500000	USD
CY2018	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-42000000	USD
CY2017	us-gaap	Increase Decrease In Other Noncurrent Liabilities IncreaseDecreaseInOtherNoncurrentLiabilities	-16000000	USD
CY2019	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	3433000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-13605000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-15445000	USD
CY2018	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	1616000	USD
CY2017	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-341000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	99222000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	76374000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	67795000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	24251000	USD
CY2018	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	27702000	USD
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	27516000	USD
CY2019	us-gaap	Payments To Acquire Mining Assets PaymentsToAcquireMiningAssets	2277000	USD
CY2018	us-gaap	Payments To Acquire Mining Assets PaymentsToAcquireMiningAssets	6558000	USD
CY2017	us-gaap	Payments To Acquire Mining Assets PaymentsToAcquireMiningAssets	1560000	USD
CY2019	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2018	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
CY2017	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	16504000	USD
CY2019	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	44000	USD
CY2018	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	432000	USD
CY2017	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	2222000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-26484000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-33828000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-43358000	USD
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2018	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2017	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	55000000	USD
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	823000	USD
CY2018	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	777000	USD
CY2017	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	55797000	USD
CY2019	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	1200000	USD
CY2018	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	861000	USD
CY2017	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	843000	USD
CY2019	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	8856000	USD
CY2018	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	8389000	USD
CY2017	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	7913000	USD
CY2019	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	2130000	USD
CY2018	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	0	USD
CY2017	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	300000	USD
CY2019	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	199000	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	422000	USD
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1086000	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	4846000	USD
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	3156000	USD
CY2017	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	4506000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-18054000	USD
CY2019	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-322000	USD
CY2018	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-140000	USD
CY2017	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	1388000	USD
CY2019	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	54362000	USD
CY2018	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	28801000	USD
CY2017	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	10380000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	70645000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	41844000	USD
CY2016Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	31464000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	125007000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	70645000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	41844000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	125007000	USD
CY2018Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	70645000	USD
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	154751000	USD
CY2018Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	130538000	USD
CY2019Q4	us-gaap	Inventory Net InventoryNet	190390000	USD
CY2018Q4	us-gaap	Inventory Net InventoryNet	214871000	USD
CY2019Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	21839000	USD
CY2018Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	23299000	USD
CY2019Q4	us-gaap	Assets Current AssetsCurrent	491987000	USD
CY2018Q4	us-gaap	Assets Current AssetsCurrent	439353000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	1666000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	5616000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	916965000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	898251000	USD
CY2019Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	684689000	USD
CY2018Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	647233000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	232276000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	251018000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	23413000	USD
CY2018Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	0	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	6380000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	6461000	USD
CY2019Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	17937000	USD
CY2018Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	7236000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	79011000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	90657000	USD
CY2019Q4	us-gaap	Assets Assets	852670000	USD
CY2018Q4	us-gaap	Assets Assets	800341000	USD
CY2019Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	868000	USD
CY2018Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	823000	USD
CY2019Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	43206000	USD
CY2018Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	49622000	USD
CY2019Q4	us-gaap	Accrued Salaries Current AccruedSalariesCurrent	41167000	USD
CY2018Q4	us-gaap	Accrued Salaries Current AccruedSalariesCurrent	47501000	USD
CY2019Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	32477000	USD
CY2018Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	33301000	USD
CY2019Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	1342000	USD
CY2018Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	2615000	USD
CY2019Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	3380000	USD
CY2018Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	5918000	USD
CY2019Q4	us-gaap	Liabilities Current LiabilitiesCurrent	122440000	USD
CY2018Q4	us-gaap	Liabilities Current LiabilitiesCurrent	139780000	USD
CY2019Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	11560000	USD
CY2018Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	14764000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	18091000	USD
CY2018Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	0	USD
CY2019Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	17424000	USD
CY2018Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	15221000	USD
CY2019Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	32466000	USD
CY2018Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	38853000	USD
CY2019Q4	us-gaap	Deferred Revenue Noncurrent DeferredRevenueNoncurrent	32891000	USD
CY2018Q4	us-gaap	Deferred Revenue Noncurrent DeferredRevenueNoncurrent	32563000	USD
CY2019Q4	us-gaap	Accrued Income Taxes Noncurrent AccruedIncomeTaxesNoncurrent	3451000	USD
CY2018Q4	us-gaap	Accrued Income Taxes Noncurrent AccruedIncomeTaxesNoncurrent	2993000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	2410000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	195000	USD
CY2019Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	1260000	USD
CY2018Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	2066000	USD
CY2019Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2018Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2019Q4	us-gaap	Common Stock Value CommonStockValue	249674000	USD
CY2018Q4	us-gaap	Common Stock Value CommonStockValue	234704000	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	589888000	USD
CY2018Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	548374000	USD
CY2019Q4	us-gaap	Treasury Stock Value TreasuryStockValue	186845000	USD
CY2018Q4	us-gaap	Treasury Stock Value TreasuryStockValue	175426000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-45462000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-58234000	USD
CY2019Q4	us-gaap	Other Additional Capital OtherAdditionalCapital	3422000	USD
CY2018Q4	us-gaap	Other Additional Capital OtherAdditionalCapital	4488000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	610677000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	553906000	USD
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	852670000	USD
CY2018Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	800341000	USD
CY2016Q4	us-gaap	Stockholders Equity StockholdersEquity	494089000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	11451000	USD
CY2017	mtrn	Other Comprehensive Income Loss Netof Tax Reform OtherComprehensiveIncomeLossNetofTaxReform	-2081000	USD
CY2017	mtrn	Tax Cutsand Jobs Actof2017 Reclassification From Aoci To Retained Earnnings TaxCutsandJobsActof2017ReclassificationFromAociToRetainedEarnnings	0	USD
CY2017	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	7913000	USD
CY2017	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	4956000	USD
CY2017	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	4506000	USD
CY2017	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	1086000	USD
CY2017	mtrn	Stock Issued During Period Value Directors Deferred Compensation StockIssuedDuringPeriodValueDirectorsDeferredCompensation	71000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	494981000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	20846000	USD
CY2018	mtrn	Other Comprehensive Income Loss Netof Tax Reform OtherComprehensiveIncomeLossNetofTaxReform	2722000	USD
CY2018	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Settlements And Curtailments1 DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1	-41406000	USD
CY2018	mtrn	Tax Cutsand Jobs Actof2017 Reclassification From Aoci To Retained Earnnings TaxCutsandJobsActof2017ReclassificationFromAociToRetainedEarnnings	0	USD
CY2018	us-gaap	New Accounting Pronouncement Or Change In Accounting Principle Effect Of Change On Net Income NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfChangeOnNetIncome	425000	USD
CY2018	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	8389000	USD
CY2018	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	5314000	USD
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	3156000	USD
CY2018	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	422000	USD
CY2018	mtrn	Stock Issued During Period Value Directors Deferred Compensation StockIssuedDuringPeriodValueDirectorsDeferredCompensation	179000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	553906000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	50660000	USD
CY2019	mtrn	Other Comprehensive Income Loss Netof Tax Reform OtherComprehensiveIncomeLossNetofTaxReform	9444000	USD
CY2019	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Settlements1 DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1	-3328000	USD
CY2019	us-gaap	New Accounting Pronouncement Or Change In Accounting Principle Effect Of Change On Net Income NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfChangeOnNetIncome	-179000	USD
CY2019	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	8856000	USD
CY2019	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	7170000	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	4846000	USD
CY2019	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	199000	USD
CY2019	mtrn	Stock Issued During Period Value Directors Deferred Compensation StockIssuedDuringPeriodValueDirectorsDeferredCompensation	249000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	610677000	USD
CY2019	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	4	Segment
CY2019	us-gaap	Use Of Estimates UseOfEstimates	<div style="line-height:120%;padding-top:12px;text-align:justify;font-size:10pt;"><span style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;">Use of Estimates:</span><span style="font-family:inherit;font-size:10pt;"> The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results may differ from those estimates.</span></div>
CY2019Q4	us-gaap	Money Market Funds At Carrying Value MoneyMarketFundsAtCarryingValue	104500000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	392000	USD
CY2018Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	616000	USD
CY2019Q4	us-gaap	Percentage Of Lifo Inventory PercentageOfLIFOInventory	0.45
CY2018Q4	us-gaap	Percentage Of Lifo Inventory PercentageOfLIFOInventory	0.57
CY2019Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	1400000	USD
CY2018Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	1300000	USD
CY2019	us-gaap	Advertising Expense AdvertisingExpense	677000	USD
CY2018	us-gaap	Advertising Expense AdvertisingExpense	1196000	USD
CY2017	us-gaap	Advertising Expense AdvertisingExpense	1252000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	67000000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	41116000	USD
CY2019	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	26528000	USD
CY2019Q4	us-gaap	Assets Assets	852670000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	61496000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	35524000	USD
CY2018	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	34260000	USD
CY2018Q4	us-gaap	Assets Assets	800341000	USD
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	40031000	USD
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	42751000	USD
CY2017	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	29076000	USD
CY2017Q4	us-gaap	Assets Assets	791084000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1185424000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1207815000	USD
CY2017	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1139447000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	232276000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	251018000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	255578000	USD
CY2019	mtrn	Entity Wide Revenue Major Customer Threshold EntityWideRevenueMajorCustomerThreshold	0.10
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1185424000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1207815000	USD
CY2019Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	42300000	USD
CY2019	us-gaap	Deferred Revenue Revenue Recognized1 DeferredRevenueRevenueRecognized1	5000000.0	USD
CY2017Q4	us-gaap	Restructuring And Related Cost Number Of Positions Eliminated Inception To Date RestructuringAndRelatedCostNumberOfPositionsEliminatedInceptionToDate	23
CY2019	us-gaap	Restructuring Charges RestructuringCharges	785000	USD
CY2018	us-gaap	Restructuring Charges RestructuringCharges	5599000	USD
CY2017	us-gaap	Restructuring Charges RestructuringCharges	644000	USD
CY2019	us-gaap	Other Noninterest Expense OtherNoninterestExpense	9247000	USD
CY2018	us-gaap	Other Noninterest Expense OtherNoninterestExpense	10999000	USD
CY2017	us-gaap	Other Noninterest Expense OtherNoninterestExpense	8782000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1400000	USD
CY2018	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2265000	USD
CY2017	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4629000	USD
CY2019	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-666000	USD
CY2018	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-1487000	USD
CY2017	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	722000	USD
CY2019	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-344000	USD
CY2018	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-518000	USD
CY2017	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-234000	USD
CY2019	us-gaap	Rental Income Nonoperating RentalIncomeNonoperating	87000	USD
CY2018	us-gaap	Rental Income Nonoperating RentalIncomeNonoperating	416000	USD
CY2017	us-gaap	Rental Income Nonoperating RentalIncomeNonoperating	168000	USD
CY2019	mtrn	Other Net OtherNet	213000	USD
CY2018	mtrn	Other Net OtherNet	481000	USD
CY2017	mtrn	Other Net OtherNet	1138000	USD
CY2019	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-11783000	USD
CY2018	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-15334000	USD
CY2017	us-gaap	Other Operating Income Expense Net OtherOperatingIncomeExpenseNet	-13893000	USD
CY2019	us-gaap	Interest Costs Incurred InterestCostsIncurred	1641000	USD
CY2018	us-gaap	Interest Costs Incurred InterestCostsIncurred	2870000	USD
CY2017	us-gaap	Interest Costs Incurred InterestCostsIncurred	2608000	USD
CY2019	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	62000	USD
CY2018	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	399000	USD
CY2017	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	425000	USD
CY2019	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-1579000	USD
CY2018	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-2471000	USD
CY2017	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-2183000	USD
CY2019	us-gaap	Interest Paid InterestPaid	1799000	USD
CY2018	us-gaap	Interest Paid InterestPaid	1436000	USD
CY2017	us-gaap	Interest Paid InterestPaid	1646000	USD
CY2019	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	1000000.0	USD
CY2018	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	1000000.0	USD
CY2017	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	900000	USD
CY2017	us-gaap	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Change In Tax Rate Provisional Income Tax Expense Benefit TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateProvisionalIncomeTaxExpenseBenefit	17100000	USD
CY2017	us-gaap	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Change In Tax Rate Provisional Income Tax Expense Benefit TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateProvisionalIncomeTaxExpenseBenefit	17100000	USD
CY2017	mtrn	Tax Cutsand Jobs Act Changein Tax Rate Deferred Tax Asset Liability Income Tax Expense Credit TaxCutsandJobsActChangeinTaxRateDeferredTaxAssetLiabilityIncomeTaxExpenseCredit	5000000.0	USD
CY2017	mtrn	Tax Cutsand Jobs Act Transition Tax Income Tax Expense Credit TaxCutsandJobsActTransitionTaxIncomeTaxExpenseCredit	6100000	USD
CY2017	mtrn	Tax Cutsand Jobs Actof2017 Provisional Valuation Allowance TaxCutsandJobsActof2017ProvisionalValuationAllowance	9500000	USD
CY2017	mtrn	Tax Cutsand Jobs Actof2017 Provisional Tax Benefit TaxCutsandJobsActof2017ProvisionalTaxBenefit	3500000	USD
CY2018	mtrn	Tax Cutsand Jobs Actof2017 Complete Accounting Changein Tax Rate Provisional Income Tax Expense Benefit TaxCutsandJobsActof2017CompleteAccountingChangeinTaxRateProvisionalIncomeTaxExpenseBenefit	11100000	USD
CY2018	mtrn	Tax Cutsand Jobs Act Changein Tax Rate Deferred Tax Asset Liability Income Tax Expense Credit TaxCutsandJobsActChangeinTaxRateDeferredTaxAssetLiabilityIncomeTaxExpenseCredit	2800000	USD
CY2018	mtrn	Tax Cutsand Jobs Act Transition Tax Income Tax Expense Credit TaxCutsandJobsActTransitionTaxIncomeTaxExpenseCredit	1200000	USD
CY2018	mtrn	Tax Cutsand Jobs Act Valuation Allowance Reversal Tax Benefit TaxCutsandJobsActValuationAllowanceReversalTaxBenefit	7100000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	56725000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	20272000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	28327000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	5265000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-3930000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	8069000	USD
CY2019	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	61990000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	16342000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	36396000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	7544000	USD
CY2018	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-5896000	USD
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1912000	USD
CY2019	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	1202000	USD
CY2018	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	2710000	USD
CY2017	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	2777000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	8746000	USD
CY2018	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-3186000	USD
CY2017	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	4689000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	1326000	USD
CY2018	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-4083000	USD
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	19935000	USD
CY2019	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	1258000	USD
CY2018	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	2765000	USD
CY2017	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	321000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	2584000	USD
CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-1318000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	20256000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	11330000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-4504000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	24945000	USD
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.210
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350
CY2019	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.010
CY2018	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.001
CY2017	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.023
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Depletion EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepletion	0.045
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Depletion EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepletion	0.178
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Depletion EffectiveIncomeTaxRateReconciliationNondeductibleExpenseDepletion	0.100
CY2019	mtrn	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activitiesand Nol EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivitiesandNOL	0
CY2018	mtrn	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activitiesand Nol EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivitiesandNOL	-0.063
CY2017	mtrn	Effective Income Tax Rate Reconciliation Deductions Qualified Production Activitiesand Nol EffectiveIncomeTaxRateReconciliationDeductionsQualifiedProductionActivitiesandNOL	0.008
CY2019	mtrn	Foreign Derived Intangible Income Tax Deduction ForeignDerivedIntangibleIncomeTaxDeduction	-0.032
CY2018	mtrn	Foreign Derived Intangible Income Tax Deduction ForeignDerivedIntangibleIncomeTaxDeduction	-0.029
CY2017	mtrn	Foreign Derived Intangible Income Tax Deduction ForeignDerivedIntangibleIncomeTaxDeduction	0
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Other EffectiveIncomeTaxRateReconciliationNondeductibleExpenseOther	0.012
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Other EffectiveIncomeTaxRateReconciliationNondeductibleExpenseOther	0
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Other EffectiveIncomeTaxRateReconciliationNondeductibleExpenseOther	0
CY2019	mtrn	Effective Income Tax Rate Reconciliation Tax Cutsand Jobs Act2017 Impact EffectiveIncomeTaxRateReconciliationTaxCutsandJobsAct2017Impact	0.025
CY2018	mtrn	Effective Income Tax Rate Reconciliation Tax Cutsand Jobs Act2017 Impact EffectiveIncomeTaxRateReconciliationTaxCutsandJobsAct2017Impact	-0.678
CY2017	mtrn	Effective Income Tax Rate Reconciliation Tax Cutsand Jobs Act2017 Impact EffectiveIncomeTaxRateReconciliationTaxCutsandJobsAct2017Impact	0.471
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.001
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	-0.015
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Foreign Income Tax Rate Differential EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential	0.034
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Research EffectiveIncomeTaxRateReconciliationTaxCreditsResearch	0.012
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Research EffectiveIncomeTaxRateReconciliationTaxCreditsResearch	0.076
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Research EffectiveIncomeTaxRateReconciliationTaxCreditsResearch	0.026
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Foreign EffectiveIncomeTaxRateReconciliationTaxCreditsForeign	0.003
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Foreign EffectiveIncomeTaxRateReconciliationTaxCreditsForeign	0.019
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits Foreign EffectiveIncomeTaxRateReconciliationTaxCreditsForeign	0.011
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Repatriation Of Foreign Earnings EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarnings	0.004
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Repatriation Of Foreign Earnings EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarnings	0.020
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Repatriation Of Foreign Earnings EffectiveIncomeTaxRateReconciliationRepatriationOfForeignEarnings	0.013
CY2019	mtrn	Effective Income Tax Rate Reconciliation Tax Accounting Change Depreciation Percent EffectiveIncomeTaxRateReconciliationTaxAccountingChangeDepreciationPercent	0
CY2018	mtrn	Effective Income Tax Rate Reconciliation Tax Accounting Change Depreciation Percent EffectiveIncomeTaxRateReconciliationTaxAccountingChangeDepreciationPercent	0
CY2017	mtrn	Effective Income Tax Rate Reconciliation Tax Accounting Change Depreciation Percent EffectiveIncomeTaxRateReconciliationTaxAccountingChangeDepreciationPercent	0.034
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	0.002
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	0.027
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Tax Contingencies EffectiveIncomeTaxRateReconciliationTaxContingencies	0.028
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.034
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.044
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense Share Based Compensation Cost EffectiveIncomeTaxRateReconciliationNondeductibleExpenseShareBasedCompensationCost	0.019
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.022
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.387
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.024
CY2019	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.025
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.025
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.008
CY2019	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.183
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.276
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.685
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits	1626000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits	2198000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	543000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Other DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther	693000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	3314000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Compensation DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeCompensation	3539000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReserves	1384000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Reserves DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsReserves	1463000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	2740000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	3032000	USD
CY2019Q4	mtrn	Deferred Tax Assets Lease Obligations DeferredTaxAssetsLeaseObligations	4614000	USD
CY2018Q4	mtrn	Deferred Tax Assets Lease Obligations DeferredTaxAssetsLeaseObligations	0	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	5149000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Pensions DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPensions	8105000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	5364000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	6215000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	13513000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	12002000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Research DeferredTaxAssetsTaxCreditCarryforwardsResearch	25000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Research DeferredTaxAssetsTaxCreditCarryforwardsResearch	744000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	0	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	2385000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	38272000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	40376000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	17676000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	15917000	USD
CY2019Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	20596000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	24459000	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	10780000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	10280000	USD
CY2019Q4	mtrn	Deferred Tax Liabilities Lease Obligations DeferredTaxLiabilitiesLeaseObligations	4428000	USD
CY2018Q4	mtrn	Deferred Tax Liabilities Lease Obligations DeferredTaxLiabilitiesLeaseObligations	0	USD
CY2019Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	2426000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssets	3635000	USD
CY2019Q4	mtrn	Deferred Tax Liabilities Deferred Expense Mine Development DeferredTaxLiabilitiesDeferredExpenseMineDevelopment	3706000	USD
CY2018Q4	mtrn	Deferred Tax Liabilities Deferred Expense Mine Development DeferredTaxLiabilitiesDeferredExpenseMineDevelopment	5123000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	21340000	USD
CY2018Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	19038000	USD
CY2019Q4	mtrn	Deferred Tax Liability DeferredTaxLiability	744000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	5421000	USD
CY2019Q4	us-gaap	Operating Loss Carryforwards Valuation Allowance OperatingLossCarryforwardsValuationAllowance	11600000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	2883000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	2944000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	0	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	443000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	399000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	4000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2018	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	508000	USD
CY2019	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	61000	USD
CY2018	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	0	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	3221000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	2883000	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	2400000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	2200000	USD
CY2019	us-gaap	Income Taxes Paid IncomeTaxesPaid	9300000	USD
CY2018	us-gaap	Income Taxes Paid IncomeTaxesPaid	2600000	USD
CY2017	us-gaap	Income Taxes Paid IncomeTaxesPaid	8100000	USD
CY2019Q4	mtrn	Unrepatriated Earnings UnrepatriatedEarnings	84800000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	20846000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	11451000	USD
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	20365000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	20212000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	20027000	shares
CY2019	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	290000	shares
CY2018	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	401000	shares
CY2017	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	388000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	20655000	shares
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	20613000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	20415000	shares
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.49
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.03
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.57
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.45
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.01
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.56
CY2019Q4	us-gaap	Inventory Raw Materials InventoryRawMaterials	35612000	USD
CY2018Q4	us-gaap	Inventory Raw Materials InventoryRawMaterials	33182000	USD
CY2019Q4	us-gaap	Inventory Work In Process InventoryWorkInProcess	177780000	USD
CY2018Q4	us-gaap	Inventory Work In Process InventoryWorkInProcess	195879000	USD
CY2019Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	25506000	USD
CY2018Q4	us-gaap	Inventory Finished Goods InventoryFinishedGoods	30643000	USD
CY2019Q4	us-gaap	Inventory Gross InventoryGross	238898000	USD
CY2018Q4	us-gaap	Inventory Gross InventoryGross	259704000	USD
CY2019Q4	us-gaap	Inventory Lifo Reserve InventoryLIFOReserve	48508000	USD
CY2018Q4	us-gaap	Inventory Lifo Reserve InventoryLIFOReserve	44833000	USD
CY2019Q4	us-gaap	Inventory Net InventoryNet	190390000	USD
CY2018Q4	us-gaap	Inventory Net InventoryNet	214871000	USD
CY2019	us-gaap	Effect Of Lifo Inventory Liquidation On Income EffectOfLIFOInventoryLiquidationOnIncome	-900000	USD
CY2018	us-gaap	Effect Of Lifo Inventory Liquidation On Income EffectOfLIFOInventoryLiquidationOnIncome	-1200000	USD
CY2017	us-gaap	Effect Of Lifo Inventory Liquidation On Income EffectOfLIFOInventoryLiquidationOnIncome	800000	USD
CY2019	us-gaap	Notional Amount Of Nonderivative Instruments NotionalAmountOfNonderivativeInstruments	309300000	USD
CY2018	us-gaap	Notional Amount Of Nonderivative Instruments NotionalAmountOfNonderivativeInstruments	316100000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	232276000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	251018000	USD
CY2019	us-gaap	Recovery Of Direct Costs RecoveryOfDirectCosts	63500000	USD
CY2019	mtrn	Unearned Income UnearnedIncome	-4400000	USD
CY2018	mtrn	Unearned Income UnearnedIncome	-4300000	USD
CY2019	us-gaap	Depreciation Depreciation	30300000	USD
CY2018	us-gaap	Depreciation Depreciation	33300000	USD
CY2017	us-gaap	Depreciation Depreciation	38100000	USD
CY2019Q4	us-gaap	Capitalized Computer Software Net CapitalizedComputerSoftwareNet	7900000	USD
CY2018Q4	us-gaap	Capitalized Computer Software Net CapitalizedComputerSoftwareNet	8000000.0	USD
CY2019	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	2400000	USD
CY2018	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	2600000	USD
CY2017	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	2400000	USD
CY2019	mtrn	Operating Lease Term Maximum OperatingLeaseTermMaximum	P25Y
CY2019Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P4Y8M8D
CY2019Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P19Y5M19D
CY2019Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.0591
CY2019Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.0531
CY2019	us-gaap	Operating Lease Cost OperatingLeaseCost	9835000	USD
CY2019	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	1414000	USD
CY2019	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	1028000	USD
CY2019	us-gaap	Lease Cost LeaseCost	12277000	USD
CY2018	us-gaap	Operating Lease Expense OperatingLeaseExpense	11600000	USD
CY2017	us-gaap	Operating Lease Expense OperatingLeaseExpense	9300000	USD
CY2019Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	23413000	USD
CY2019Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	6542000	USD
CY2019Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	18091000	USD
CY2019Q4	us-gaap	Finance Lease Liability Noncurrent FinanceLeaseLiabilityNoncurrent	17424000	USD
CY2019Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	18689000	USD
CY2019Q4	us-gaap	Finance Lease Liability Current FinanceLeaseLiabilityCurrent	2224000	USD
CY2019Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	7759000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	2224000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	6725000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	2224000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	4754000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	1515000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	3807000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	1160000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	1891000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	20875000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	3341000	USD
CY2019Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	30222000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	28277000	USD
CY2019Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	11533000	USD
CY2019Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	3644000	USD
CY2019Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	18689000	USD
CY2019Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	24633000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due Current CapitalLeasesFutureMinimumPaymentsDueCurrent	2172000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	7287000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due In Two Years CapitalLeasesFutureMinimumPaymentsDueInTwoYears	2172000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	6525000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due In Three Years CapitalLeasesFutureMinimumPaymentsDueInThreeYears	2172000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	4966000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due In Four Years CapitalLeasesFutureMinimumPaymentsDueInFourYears	2172000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	3790000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due In Five Years CapitalLeasesFutureMinimumPaymentsDueInFiveYears	1463000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	3532000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due Thereafter CapitalLeasesFutureMinimumPaymentsDueThereafter	21056000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	4287000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Due CapitalLeasesFutureMinimumPaymentsDue	31207000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	30387000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Interest Included In Payments CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments	19338000	USD
CY2018Q4	us-gaap	Capital Leases Future Minimum Payments Present Value Of Net Minimum Payments CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments	11869000	USD
CY2019	us-gaap	Operating Lease Payments OperatingLeasePayments	15841000	USD
CY2019	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	1028000	USD
CY2019	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	1200000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	57235000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	53554000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	57235000	USD
CY2018Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	52040000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1400000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	615000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	523000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	513000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	421000	USD
CY2019Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	523000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	79000000.0	USD
CY2018Q4	us-gaap	Goodwill Goodwill	90700000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	90657000	USD
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	11560000	USD
CY2019	us-gaap	Goodwill Other Increase Decrease GoodwillOtherIncreaseDecrease	-86000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	79011000	USD
CY2019	us-gaap	Other Asset Impairment Charges OtherAssetImpairmentCharges	2600000	USD
CY2019	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	11600000	USD
CY2019Q4	us-gaap	Longterm Debt Percentage Bearing Fixed Interest Amount LongtermDebtPercentageBearingFixedInterestAmount	2218000	USD
CY2018Q4	us-gaap	Longterm Debt Percentage Bearing Fixed Interest Amount LongtermDebtPercentageBearingFixedInterestAmount	3041000	USD
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	2218000	USD
CY2018Q4	us-gaap	Long Term Debt LongTermDebt	3041000	USD
CY2019Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	868000	USD
CY2018Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	823000	USD
CY2019Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	1350000	USD
CY2018Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	2218000	USD
CY2019Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	90000	USD
CY2018Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	152000	USD
CY2019Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	1260000	USD
CY2018Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	2066000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Before Reclassifications Before Tax OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax	-8370000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	868000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	1350000	USD
CY2019Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	0	USD
CY2019Q4	us-gaap	Long Term Debt LongTermDebt	2218000	USD
CY2019Q4	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	375000000.0	USD
CY2019Q4	us-gaap	Debt Instrument Face Amount DebtInstrumentFaceAmount	8000000.0	USD
CY2019Q4	us-gaap	Long Term Debt Percentage Bearing Fixed Interest Rate LongTermDebtPercentageBearingFixedInterestRate	0.0490
CY2019Q4	us-gaap	Longterm Debt Percentage Bearing Fixed Interest Amount LongtermDebtPercentageBearingFixedInterestAmount	2200000	USD
CY2019	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Settlements And Curtailments1 DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1	-3300000	USD
CY2019	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Settlements And Curtailments1 DefinedBenefitPlanRecognizedNetGainLossDueToSettlementsAndCurtailments1	-3300000	USD
CY2018	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Settlements1 DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1	-41400000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease	0.040
CY2018Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease	0.040
CY2019Q4	us-gaap	Defined Benefit Plan Health Care Cost Trend Rate Assumed Next Fiscal Year DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear	0.0625
CY2018Q4	us-gaap	Defined Benefit Plan Health Care Cost Trend Rate Assumed Next Fiscal Year DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYear	0.0650
CY2019Q4	us-gaap	Defined Benefit Plan Ultimate Health Care Cost Trend Rate1 DefinedBenefitPlanUltimateHealthCareCostTrendRate1	0.0500
CY2018Q4	us-gaap	Defined Benefit Plan Ultimate Health Care Cost Trend Rate1 DefinedBenefitPlanUltimateHealthCareCostTrendRate1	0.0500
CY2019	us-gaap	Defined Benefit Plan Year Health Care Cost Trend Rate Reaches Ultimate Trend Rate DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate	2025
CY2018	us-gaap	Defined Benefit Plan Year Health Care Cost Trend Rate Reaches Ultimate Trend Rate DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRate	2025
CY2019	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Service And Interest Cost Components DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnServiceAndInterestCostComponents	6000	USD
CY2018	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Service And Interest Cost Components DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnServiceAndInterestCostComponents	6000	USD
CY2019	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Service And Interest Cost Components1 DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponents1	6000	USD
CY2018	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Service And Interest Cost Components1 DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponents1	6000	USD
CY2019	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Accumulated Postretirement Benefit Obligation DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnAccumulatedPostretirementBenefitObligation	149000	USD
CY2018	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Accumulated Postretirement Benefit Obligation DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnAccumulatedPostretirementBenefitObligation	163000	USD
CY2019	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Accumulated Postretirement Benefit Obligation1 DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnAccumulatedPostretirementBenefitObligation1	139000	USD
CY2018	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Accumulated Postretirement Benefit Obligation1 DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnAccumulatedPostretirementBenefitObligation1	152000	USD
CY2019Q4	mtrn	Defined Benefit Plan Fair Valueof Plan Assets Excluding Net Asset Value Investments DefinedBenefitPlanFairValueofPlanAssetsExcludingNetAssetValueInvestments	56484000	USD
CY2019Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	174046000	USD
CY2018Q4	mtrn	Defined Benefit Plan Fair Valueof Plan Assets Excluding Net Asset Value Investments DefinedBenefitPlanFairValueofPlanAssetsExcludingNetAssetValueInvestments	94211000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	145046000	USD
CY2019	mtrn	Investments In Real Estate Minimum Percentage InvestmentsInRealEstateMinimumPercentage	0.80
CY2019	mtrn	Target Funded Status Percentage TargetFundedStatusPercentage	1
CY2019	mtrn	Current Asset Allocation To Invest In Alternative Securities Maximum CurrentAssetAllocationToInvestInAlternativeSecuritiesMaximum	0.20
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	7000000.0	USD
CY2018	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	5200000	USD
CY2017	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	4500000	USD
CY2016Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-86181000	USD
CY2017	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax	-5705000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-2665000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	14091000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-16756000	USD
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-102937000	USD
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-102937000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Before Reclassifications Before Tax OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax	10477000	USD
CY2018	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax	-46854000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	57331000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	12628000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	44703000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-58234000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-58234000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Before Reclassifications Before Tax OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax	7696000	USD
CY2019	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax	-9812000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	17508000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	4736000	USD
CY2019	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	12772000	USD
CY2019Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-45462000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	11100000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	11400000	USD
CY2017	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	7700000	USD
CY2019	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-700000	USD
CY2019	us-gaap	Gain Loss On Foreign Currency Derivatives Recorded In Earnings Net GainLossOnForeignCurrencyDerivativesRecordedInEarningsNet	100000	USD
CY2018	us-gaap	Gain Loss On Foreign Currency Derivatives Recorded In Earnings Net GainLossOnForeignCurrencyDerivativesRecordedInEarningsNet	900000	USD
CY2019	us-gaap	Gain Loss On Fair Value Hedge Ineffectiveness Net GainLossOnFairValueHedgeIneffectivenessNet	0	USD
CY2018	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-600000	USD
CY2019	us-gaap	Cash Flow Hedge Gain Loss To Be Reclassified Within Twelve Months CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths	-700000	USD
CY2019	us-gaap	Derivative Gain Loss On Derivative Net DerivativeGainLossOnDerivativeNet	959000	USD
CY2019Q4	us-gaap	Loss Contingency Pending Claims Number LossContingencyPendingClaimsNumber	1	claim
CY2018Q4	us-gaap	Accrual For Environmental Loss Contingencies AccrualForEnvironmentalLossContingencies	6521000	USD
CY2017Q4	us-gaap	Accrual For Environmental Loss Contingencies AccrualForEnvironmentalLossContingencies	6499000	USD
CY2019	us-gaap	Accrual For Environmental Loss Contingencies Charges To Expense For New Losses AccrualForEnvironmentalLossContingenciesChargesToExpenseForNewLosses	482000	USD
CY2018	us-gaap	Accrual For Environmental Loss Contingencies Charges To Expense For New Losses AccrualForEnvironmentalLossContingenciesChargesToExpenseForNewLosses	718000	USD
CY2019	us-gaap	Accrual For Environmental Loss Contingencies Payments1 AccrualForEnvironmentalLossContingenciesPayments1	1066000	USD
CY2018	us-gaap	Accrual For Environmental Loss Contingencies Payments1 AccrualForEnvironmentalLossContingenciesPayments1	696000	USD
CY2019Q4	us-gaap	Accrual For Environmental Loss Contingencies AccrualForEnvironmentalLossContingencies	5937000	USD
CY2018Q4	us-gaap	Accrual For Environmental Loss Contingencies AccrualForEnvironmentalLossContingencies	6521000	USD
CY2019Q4	us-gaap	Accrued Environmental Loss Contingencies Current AccruedEnvironmentalLossContingenciesCurrent	982000	USD
CY2018Q4	us-gaap	Accrued Environmental Loss Contingencies Current AccruedEnvironmentalLossContingenciesCurrent	1168000	USD
CY2019Q4	us-gaap	Accrued Environmental Loss Contingencies Noncurrent AccruedEnvironmentalLossContingenciesNoncurrent	4955000	USD
CY2018Q4	us-gaap	Accrued Environmental Loss Contingencies Noncurrent AccruedEnvironmentalLossContingenciesNoncurrent	5353000	USD
CY2019Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	301441000	USD
CY2019Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	297843000	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	305979000	USD
CY2019Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	280161000	USD
CY2019	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1185424000	USD
CY2019Q1	us-gaap	Gross Profit GrossProfit	69312000	USD
CY2019Q2	us-gaap	Gross Profit GrossProfit	69594000	USD
CY2019Q3	us-gaap	Gross Profit GrossProfit	65231000	USD
CY2019Q4	us-gaap	Gross Profit GrossProfit	55007000	USD
CY2019	us-gaap	Gross Profit GrossProfit	259144000	USD
CY2019Q1	mtrn	Gross Profit Percentage GrossProfitPercentage	0.230
CY2019Q2	mtrn	Gross Profit Percentage GrossProfitPercentage	0.234
CY2019Q3	mtrn	Gross Profit Percentage GrossProfitPercentage	0.213
CY2019Q4	mtrn	Gross Profit Percentage GrossProfitPercentage	0.196
CY2019	mtrn	Gross Profit Percentage GrossProfitPercentage	0.219
CY2019Q1	us-gaap	Net Income Loss NetIncomeLoss	16906000	USD
CY2019Q2	us-gaap	Net Income Loss NetIncomeLoss	15540000	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	3463000	USD
CY2019Q4	us-gaap	Net Income Loss NetIncomeLoss	14751000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	50660000	USD
CY2019Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.83
CY2019Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.76
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.17
CY2019Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.72
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.49
CY2019Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.82
CY2019Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.75
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.17
CY2019Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.71
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.45
CY2018Q1	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	303467000	USD
CY2018Q2	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	309085000	USD
CY2018Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	297193000	USD
CY2018Q4	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	298070000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1207815000	USD
CY2018Q1	us-gaap	Gross Profit GrossProfit	58280000	USD
CY2018Q2	us-gaap	Gross Profit GrossProfit	61838000	USD
CY2018Q3	us-gaap	Gross Profit GrossProfit	64935000	USD
CY2018Q4	us-gaap	Gross Profit GrossProfit	66052000	USD
CY2018	us-gaap	Gross Profit GrossProfit	251105000	USD
CY2018Q1	mtrn	Gross Profit Percentage GrossProfitPercentage	0.192
CY2018Q2	mtrn	Gross Profit Percentage GrossProfitPercentage	0.200
CY2018Q3	mtrn	Gross Profit Percentage GrossProfitPercentage	0.218
CY2018Q4	mtrn	Gross Profit Percentage GrossProfitPercentage	0.222
CY2018	mtrn	Gross Profit Percentage GrossProfitPercentage	0.208
CY2018Q1	us-gaap	Net Income Loss NetIncomeLoss	10564000	USD
CY2018Q2	us-gaap	Net Income Loss NetIncomeLoss	11144000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	19966000	USD
CY2018Q4	us-gaap	Net Income Loss NetIncomeLoss	-20828000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	20846000	USD
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.55
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.52
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.99
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.03
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.03
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.51
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.54
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.97
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.03
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.01
CY2019	us-gaap	Asset Impairment Charges AssetImpairmentCharges	14100000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Settlements1 DefinedBenefitPlanRecognizedNetGainLossDueToSettlements1	-41400000	USD
CY2018Q4	mtrn	Tax Cutsand Jobs Actof2017 Complete Accounting Changein Tax Rate Provisional Income Tax Expense Benefit TaxCutsandJobsActof2017CompleteAccountingChangeinTaxRateProvisionalIncomeTaxExpenseBenefit	-11100000	USD

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2018 Q4 Form 10-K Financial Statement

#000110465720000013 Filed on February 13, 2020

Income Statement

Balance Sheet

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Facts In Submission

Files In Submission

$MTRN MATERION Corp Stock $mtrn

2018 Q4 Form 10-K Financial Statement

#000110465720000013 Filed on February 13, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$MTRN
MATERION Corp Stock $mtrn