$MMSI
MERIT MEDICAL SYSTEMS INC Stock $mmsi

$mmsi Overview Financials Valuation SEC Filings Company Website

2018 Q4 Form 10-Q Financial Statement

#000085698218000078 Filed on November 09, 2018

Income Statement

Concept	2018 Q4	2018 Q3	2017 Q3
Revenue	$233.2M	$221.7M	$179.3M
YoY Change	22.19%	23.6%	14.25%
Cost Of Revenue	$128.6M	$119.6M	$98.82M
YoY Change	22.24%	21.04%	10.84%
Gross Profit	$104.7M	$102.0M	$80.51M
YoY Change	22.19%	26.73%	18.73%
Gross Profit Margin	44.87%	46.03%	44.9%
Selling, General & Admin	$75.60M	$66.38M	$54.72M
YoY Change	27.92%	21.32%	2.85%
% of Gross Profit	72.23%	65.06%	67.96%
Research & Development	$15.60M	$14.53M	$12.84M
YoY Change	22.83%	13.14%	12.38%
% of Gross Profit	14.9%	14.23%	15.95%
Depreciation & Amortization	$19.10M	$17.60M	$13.70M
YoY Change	34.51%	28.47%	15.13%
% of Gross Profit	18.25%	17.25%	17.02%
Operating Expenses	$91.00M	$80.98M	$79.64M
YoY Change	27.27%	1.69%	22.84%
Operating Profit	$13.66M	$21.06M	$879.0K
YoY Change	3.34%	2296.02%	-70.57%
Interest Expense	-$1.900M	$2.329M	$1.590M
YoY Change	11.76%	46.48%	-47.39%
% of Operating Profit	-13.91%	11.06%	180.89%
Other Income/Expense, Net	$500.0K	-$1.676M	-$3.084M
YoY Change	-200.0%	-45.65%	3.07%
Pretax Income	$12.20M	$19.39M	-$2.205M
YoY Change	7.96%	-979.14%	44000.0%
Income Tax	$3.022M	$2.766M	$1.364M
% Of Pretax Income	24.77%	14.27%
Net Earnings	$9.188M	$16.62M	-$3.569M
YoY Change	35.0%	-565.65%	-466.8%
Net Earnings / Revenue	3.94%	7.5%	-1.99%
Basic Earnings Per Share	$0.17	$0.31	-$0.07
Diluted Earnings Per Share	$0.16	$0.30	-$0.07
COMMON SHARES
Basic Shares Outstanding	54.83M shares	53.43M	50.15M shares
Diluted Shares Outstanding		55.10M	51.60M shares

Balance Sheet

Concept	2018 Q4	2018 Q3	2017 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$67.40M	$52.00M	$23.40M
YoY Change	108.67%	122.22%	35.26%
Cash & Equivalents	$67.36M	$51.96M	$23.36M
Short-Term Investments
Other Short-Term Assets	$15.00M	$15.00M	$23.30M
YoY Change	21.95%	-35.62%	41.21%
Inventory	$197.5M	$181.4M	$145.6M
Prepaid Expenses
Receivables	$137.2M	$129.3M	$101.4M
Other Receivables	$12.80M	$9.900M	$6.100M
Total Short-Term Assets	$429.8M	$387.6M	$299.9M
YoY Change	35.97%	29.27%	27.99%
LONG-TERM ASSETS
Property, Plant & Equipment	$331.5M	$319.9M	$290.3M
YoY Change	13.19%	10.21%	4.18%
Goodwill	$335.4M	$249.0M	$234.0M
YoY Change	40.85%	6.4%	9.84%
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$57.58M	$61.93M	$32.41M
YoY Change	64.32%	91.06%	98.9%
Total Long-Term Assets	$1.190B	$922.2M	$787.3M
YoY Change	49.58%	17.14%	13.39%
TOTAL ASSETS
Total Short-Term Assets	$429.8M	$387.6M	$299.9M
Total Long-Term Assets	$1.190B	$922.2M	$787.3M
Total Assets	$1.620B	$1.310B	$1.087B
YoY Change	45.71%	20.49%	17.07%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$54.00M	$50.70M	$32.30M
YoY Change	54.73%	56.97%	6.95%
Accrued Expenses	$96.17M	$65.53M	$56.51M
YoY Change	63.19%	15.97%	25.78%
Deferred Revenue
YoY Change
Short-Term Debt	$7.000M	$7.000M	$6.962M
YoY Change	0.59%	0.55%
Long-Term Debt Due	$22.00M	$22.00M	$16.96M
YoY Change	13.06%	29.7%	69.62%
Total Short-Term Liabilities	$175.3M	$139.8M	$107.7M
YoY Change	51.65%	29.78%	24.59%
LONG-TERM LIABILITIES
Long-Term Debt	$373.2M	$186.9M	$261.0M
YoY Change	44.07%	-28.4%	-17.87%
Other Long-Term Liabilities	$65.49M	$14.81M	$14.66M
YoY Change	299.87%	1.06%	222.46%
Total Long-Term Liabilities	$438.6M	$201.7M	$275.6M
YoY Change	59.28%	-26.83%	-14.48%
TOTAL LIABILITIES
Total Short-Term Liabilities	$175.3M	$139.8M	$107.7M
Total Long-Term Liabilities	$438.6M	$201.7M	$275.6M
Total Liabilities	$687.2M	$386.7M	$420.3M
YoY Change	57.81%	-8.01%	-5.04%
SHAREHOLDERS EQUITY
Retained Earnings	$363.4M	$354.2M	$314.6M
YoY Change	13.07%	12.6%	9.86%
Common Stock	$571.4M	$568.1M	$351.3M
YoY Change	61.69%	61.69%	71.71%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$932.8M	$923.2M	$666.8M
YoY Change
Total Liabilities & Shareholders Equity	$1.620B	$1.310B	$1.087B
YoY Change	45.71%	20.49%	17.07%

Cashflow Statement

Concept	2018 Q4	2018 Q3	2017 Q3
OPERATING ACTIVITIES
Net Income	$9.188M	$16.62M	-$3.569M
YoY Change	35.0%	-565.65%	-466.8%
Depreciation, Depletion And Amortization	$19.10M	$17.60M	$13.70M
YoY Change	34.51%	28.47%	15.13%
Cash From Operating Activities	$23.60M	$27.90M	$8.800M
YoY Change	22.28%	217.05%	-19.27%
INVESTING ACTIVITIES
Capital Expenditures	-$17.00M	-$16.00M	-$12.50M
YoY Change	73.47%	28.0%	111.86%
Acquisitions
YoY Change
Other Investing Activities	-$179.0M	-$4.300M	-$48.70M
YoY Change	8423.81%	-91.17%	-49.79%
Cash From Investing Activities	-$196.0M	-$20.30M	-$61.20M
YoY Change	1547.06%	-66.83%	-40.52%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net		$205.0M
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	187.9M	2.300M	38.10M
YoY Change	23387.5%	-93.96%	-61.44%
NET CHANGE
Cash From Operating Activities	23.60M	27.90M	8.800M
Cash From Investing Activities	-196.0M	-20.30M	-61.20M
Cash From Financing Activities	187.9M	2.300M	38.10M
Net Change In Cash	15.50M	9.900M	-14.30M
YoY Change	89.02%	-169.23%	-310.29%
FREE CASH FLOW
Cash From Operating Activities	$23.60M	$27.90M	$8.800M
Capital Expenditures	-$17.00M	-$16.00M	-$12.50M
Free Cash Flow	$40.60M	$43.90M	$21.30M
YoY Change	39.52%	106.1%	26.79%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Entity Registrant Name EntityRegistrantName	MERIT MEDICAL SYSTEMS INC
	dei	Entity Central Index Key EntityCentralIndexKey	0000856982
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2018
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Amendment Flag AmendmentFlag	false
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Small Business EntitySmallBusiness	false
	dei	Document Period End Date DocumentPeriodEndDate	2018-09-30
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2018Q3	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	2011000	USD
CY2017Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	1769000	USD
CY2018Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2017Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	5000000	shares
CY2018Q3	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2017Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2018Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare
CY2017Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare
CY2017Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	105536000	USD
CY2018Q3	us-gaap	Nontrade Receivables Current NontradeReceivablesCurrent	8903000	USD
CY2018Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	100000000	shares
CY2017Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	100000000	shares
CY2018Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	54802000	shares
CY2017Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	50248000	shares
CY2018Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	54802000	shares
CY2017Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	50248000	shares
	us-gaap	Interest Paid Capitalized InterestPaidCapitalized	468000	USD
	us-gaap	Interest Paid Capitalized InterestPaidCapitalized	371000	USD
	mmsi	Stock Surrendered During Period Shares Stock Options Exercised StockSurrenderedDuringPeriodSharesStockOptionsExercised	43000	shares
	mmsi	Stock Surrendered During Period Shares Stock Options Exercised StockSurrenderedDuringPeriodSharesStockOptionsExercised	0	shares
	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P3Y3M
	us-gaap	Derivative Term Of Contract DerivativeTermOfContract	P2Y
CY2017Q3	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	0	USD
	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	0	USD
	dei	Document Type DocumentType	10-Q
CY2018Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	54833602	shares
CY2018Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	51955000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	32336000	USD
CY2018Q3	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	129282000	USD
CY2017Q4	us-gaap	Nontrade Receivables Current NontradeReceivablesCurrent	9429000	USD
CY2018Q3	us-gaap	Inventory Net InventoryNet	181439000	USD
CY2017Q4	us-gaap	Inventory Net InventoryNet	155288000	USD
CY2018Q3	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	11720000	USD
CY2017Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	9096000	USD
CY2018Q3	us-gaap	Prepaid Taxes PrepaidTaxes	3307000	USD
CY2017Q4	us-gaap	Prepaid Taxes PrepaidTaxes	3225000	USD
CY2018Q3	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	1043000	USD
CY2017Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	1211000	USD
CY2018Q3	us-gaap	Assets Current AssetsCurrent	387649000	USD
CY2017Q4	us-gaap	Assets Current AssetsCurrent	316121000	USD
CY2018Q3	us-gaap	Land Land	26926000	USD
CY2017Q4	us-gaap	Land Land	19877000	USD
CY2018Q3	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	150880000	USD
CY2017Q4	us-gaap	Buildings And Improvements Gross BuildingsAndImprovementsGross	147356000	USD
CY2018Q3	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	211215000	USD
CY2017Q4	us-gaap	Machinery And Equipment Gross MachineryAndEquipmentGross	197651000	USD
CY2018Q3	us-gaap	Furniture And Fixtures Gross FurnitureAndFixturesGross	53869000	USD
CY2017Q4	us-gaap	Furniture And Fixtures Gross FurnitureAndFixturesGross	49528000	USD
CY2018Q3	us-gaap	Leasehold Improvements Gross LeaseholdImprovementsGross	33365000	USD
CY2017Q4	us-gaap	Leasehold Improvements Gross LeaseholdImprovementsGross	31161000	USD
CY2018Q3	us-gaap	Construction In Progress Gross ConstructionInProgressGross	48166000	USD
CY2017Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	32896000	USD
CY2018Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	524421000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	478469000	USD
CY2018Q3	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	204496000	USD
CY2017Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	185649000	USD
CY2018Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	319925000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	292820000	USD
CY2018Q3	us-gaap	Goodwill Goodwill	249023000	USD
CY2017Q4	us-gaap	Goodwill Goodwill	238147000	USD
CY2018Q3	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	2254000	USD
CY2017Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	2359000	USD
CY2018Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	61927000	USD
CY2017Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	35040000	USD
CY2018Q3	mmsi	Intangible Assets Net Goodwill And Other Assets Noncurrent IntangibleAssetsNetGoodwillAndOtherAssetsNoncurrent	602309000	USD
CY2017Q4	mmsi	Intangible Assets Net Goodwill And Other Assets Noncurrent IntangibleAssetsNetGoodwillAndOtherAssetsNoncurrent	502870000	USD
CY2018Q3	us-gaap	Assets Assets	1309883000	USD
CY2017Q4	us-gaap	Assets Assets	1111811000	USD
CY2018Q3	us-gaap	Accounts Payable Trade Current AccountsPayableTradeCurrent	50697000	USD
CY2017Q4	us-gaap	Accounts Payable Trade Current AccountsPayableTradeCurrent	34931000	USD
CY2018Q3	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	65530000	USD
CY2017Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	58932000	USD
CY2018Q3	us-gaap	Long Term Debt Current LongTermDebtCurrent	22000000	USD
CY2017Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	19459000	USD
CY2018Q3	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	1598000	USD
CY2017Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	2298000	USD
CY2018Q3	us-gaap	Liabilities Current LiabilitiesCurrent	139825000	USD
CY2017Q4	us-gaap	Liabilities Current LiabilitiesCurrent	115620000	USD
CY2018Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	186867000	USD
CY2017Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	259013000	USD
CY2018Q3	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	23102000	USD
CY2017Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	23289000	USD
CY2018Q3	us-gaap	Accrued Income Taxes Noncurrent AccruedIncomeTaxesNoncurrent	4846000	USD
CY2017Q4	us-gaap	Accrued Income Taxes Noncurrent AccruedIncomeTaxesNoncurrent	4846000	USD
CY2018Q3	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	2746000	USD
CY2017Q4	us-gaap	Liability For Uncertain Tax Positions Noncurrent LiabilityForUncertainTaxPositionsNoncurrent	2746000	USD
CY2018Q3	us-gaap	Deferred Compensation Liability Classified Noncurrent DeferredCompensationLiabilityClassifiedNoncurrent	12176000	USD
CY2017Q4	us-gaap	Deferred Compensation Liability Classified Noncurrent DeferredCompensationLiabilityClassifiedNoncurrent	11181000	USD
CY2018Q3	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	2296000	USD
CY2017Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	2403000	USD
CY2018Q3	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	14814000	USD
CY2017Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	16379000	USD
CY2018Q3	us-gaap	Liabilities Liabilities	386672000	USD
CY2017Q4	us-gaap	Liabilities Liabilities	435477000	USD
CY2018Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2017Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2018Q3	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2017Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2018Q3	us-gaap	Common Stock Value CommonStockValue	568051000	USD
CY2017Q4	us-gaap	Common Stock Value CommonStockValue	353392000	USD
CY2018Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	354236000	USD
CY2017Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	321408000	USD
CY2018Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	924000	USD
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	1534000	USD
CY2018Q3	us-gaap	Stockholders Equity StockholdersEquity	923211000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	676334000	USD
CY2018Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1309883000	USD
CY2017Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1111811000	USD
CY2018Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	221659000	USD
CY2017Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	179337000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	649504000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	536955000	USD
CY2018Q3	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	119620000	USD
CY2017Q3	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	98823000	USD
	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	359400000	USD
	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	296358000	USD
CY2018Q3	us-gaap	Gross Profit GrossProfit	102039000	USD
CY2017Q3	us-gaap	Gross Profit GrossProfit	80514000	USD
	us-gaap	Gross Profit GrossProfit	290104000	USD
	us-gaap	Gross Profit GrossProfit	240597000	USD
CY2018Q3	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	66382000	USD
CY2017Q3	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	54716000	USD
	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	200389000	USD
	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	169896000	USD
CY2018Q3	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	14525000	USD
CY2017Q3	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	12838000	USD
	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	44163000	USD
	us-gaap	Research And Development Expense ResearchAndDevelopmentExpense	38676000	USD
CY2018Q3	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	657000	USD
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	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	657000	USD
	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	0	USD
CY2018Q3	mmsi	Business Combination Contingent Consideration Arrangements Contingent Consideration Benefit BusinessCombinationContingentConsiderationArrangementsContingentConsiderationBenefit	661000	USD
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	mmsi	Business Combination Contingent Consideration Arrangements Contingent Consideration Benefit BusinessCombinationContingentConsiderationArrangementsContingentConsiderationBenefit	442000	USD
	mmsi	Business Combination Contingent Consideration Arrangements Contingent Consideration Benefit BusinessCombinationContingentConsiderationArrangementsContingentConsiderationBenefit	-39000	USD
CY2018Q3	us-gaap	Research And Development Asset Acquired Other Than Through Business Combination Written Off ResearchAndDevelopmentAssetAcquiredOtherThanThroughBusinessCombinationWrittenOff	75000	USD
CY2017Q3	us-gaap	Research And Development Asset Acquired Other Than Through Business Combination Written Off ResearchAndDevelopmentAssetAcquiredOtherThanThroughBusinessCombinationWrittenOff	12061000	USD
	us-gaap	Research And Development Asset Acquired Other Than Through Business Combination Written Off ResearchAndDevelopmentAssetAcquiredOtherThanThroughBusinessCombinationWrittenOff	382000	USD
	us-gaap	Research And Development Asset Acquired Other Than Through Business Combination Written Off ResearchAndDevelopmentAssetAcquiredOtherThanThroughBusinessCombinationWrittenOff	12136000	USD
CY2018Q3	us-gaap	Operating Expenses OperatingExpenses	80978000	USD
CY2017Q3	us-gaap	Operating Expenses OperatingExpenses	79635000	USD
	us-gaap	Operating Expenses OperatingExpenses	245149000	USD
	us-gaap	Operating Expenses OperatingExpenses	220747000	USD
CY2018Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	21061000	USD
CY2017Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	879000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	44955000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	19850000	USD
CY2018Q3	us-gaap	Investment Income Interest InvestmentIncomeInterest	359000	USD
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	us-gaap	Investment Income Interest InvestmentIncomeInterest	847000	USD
	us-gaap	Investment Income Interest InvestmentIncomeInterest	266000	USD
CY2018Q3	us-gaap	Interest Expense InterestExpense	2329000	USD
CY2017Q3	us-gaap	Interest Expense InterestExpense	1590000	USD
	us-gaap	Interest Expense InterestExpense	8064000	USD
	us-gaap	Interest Expense InterestExpense	5935000	USD
CY2018Q3	us-gaap	Business Combination Bargain Purchase Gain Recognized Amount BusinessCombinationBargainPurchaseGainRecognizedAmount	0	USD
CY2017Q3	us-gaap	Business Combination Bargain Purchase Gain Recognized Amount BusinessCombinationBargainPurchaseGainRecognizedAmount	-778000	USD
	us-gaap	Business Combination Bargain Purchase Gain Recognized Amount BusinessCombinationBargainPurchaseGainRecognizedAmount	0	USD
	us-gaap	Business Combination Bargain Purchase Gain Recognized Amount BusinessCombinationBargainPurchaseGainRecognizedAmount	10796000	USD
CY2018Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	294000	USD
CY2017Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-810000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-429000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-376000	USD
CY2018Q3	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-1676000	USD
CY2017Q3	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-3084000	USD
	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-7646000	USD
	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	4751000	USD
CY2018Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	19385000	USD
CY2017Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-2205000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	37309000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	24601000	USD
CY2018Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2766000	USD
CY2017Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1364000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4481000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3884000	USD
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	16619000	USD
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	53096000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	49555000	shares
CY2017Q3	us-gaap	Net Income Loss NetIncomeLoss	-3569000	USD
	us-gaap	Net Income Loss NetIncomeLoss	32828000	USD
	us-gaap	Net Income Loss NetIncomeLoss	20717000	USD
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.31
CY2017Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.07
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.64
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.43
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.30
CY2017Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.07
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.62
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.42
CY2018Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	53431000	shares
CY2017Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	50150000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	51434000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	48332000	shares
CY2018Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	55103000	shares
CY2017Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	51599000	shares
CY2018Q3	us-gaap	Net Income Loss NetIncomeLoss	16619000	USD
CY2017Q3	us-gaap	Net Income Loss NetIncomeLoss	-3569000	USD
	us-gaap	Net Income Loss NetIncomeLoss	32828000	USD
	us-gaap	Net Income Loss NetIncomeLoss	20717000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	667000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	-144000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	3541000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax	166000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	172000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	-56000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	910000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	64000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossBeforeReclassificationAndTax	-1637000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossBeforeReclassificationAndTax	721000	USD
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossBeforeReclassificationAndTax	-3241000	USD
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Before Reclassification And Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossBeforeReclassificationAndTax	2925000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Foreign Currency Translation Gain Loss Arising During Period Tax OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax	0	USD
CY2017Q3	us-gaap	Other Comprehensive Income Foreign Currency Translation Gain Loss Arising During Period Tax OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax	0	USD
	us-gaap	Other Comprehensive Income Foreign Currency Translation Gain Loss Arising During Period Tax OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax	0	USD
	us-gaap	Other Comprehensive Income Foreign Currency Translation Gain Loss Arising During Period Tax OtherComprehensiveIncomeForeignCurrencyTranslationGainLossArisingDuringPeriodTax	252000	USD
CY2018Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-1142000	USD
CY2017Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	633000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-610000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	2775000	USD
CY2018Q3	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	15477000	USD
CY2017Q3	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-2936000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	32218000	USD
	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	23492000	USD
	us-gaap	Net Income Loss NetIncomeLoss	32828000	USD
	us-gaap	Net Income Loss NetIncomeLoss	20717000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	50436000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	39388000	USD
	us-gaap	Business Combination Bargain Purchase Gain Recognized Amount BusinessCombinationBargainPurchaseGainRecognizedAmount	0	USD
	us-gaap	Business Combination Bargain Purchase Gain Recognized Amount BusinessCombinationBargainPurchaseGainRecognizedAmount	10796000	USD
	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-425000	USD
	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	-219000	USD
	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	744000	USD
	us-gaap	Impairment Of Intangible Assets Finitelived ImpairmentOfIntangibleAssetsFinitelived	86000	USD
	us-gaap	Research And Development Asset Acquired Other Than Through Business Combination Written Off ResearchAndDevelopmentAssetAcquiredOtherThanThroughBusinessCombinationWrittenOff	382000	USD
	us-gaap	Research And Development Asset Acquired Other Than Through Business Combination Written Off ResearchAndDevelopmentAssetAcquiredOtherThanThroughBusinessCombinationWrittenOff	12136000	USD
	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	106000	USD
	us-gaap	Contract With Customer Liability Revenue Recognized ContractWithCustomerLiabilityRevenueRecognized	111000	USD
	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	603000	USD
	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	514000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	0	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-290000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	4494000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	2883000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	25482000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	10963000	USD
	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	-255000	USD
	us-gaap	Increase Decrease In Other Receivables IncreaseDecreaseInOtherReceivables	449000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	19375000	USD
	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	9922000	USD
	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	2719000	USD
	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	1587000	USD
	us-gaap	Increase Decrease In Prepaid Taxes IncreaseDecreaseInPrepaidTaxes	120000	USD
	us-gaap	Increase Decrease In Prepaid Taxes IncreaseDecreaseInPrepaidTaxes	231000	USD
	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	-134000	USD
	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	-280000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	1370000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	2992000	USD
	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	15936000	USD
	us-gaap	Increase Decrease In Accounts Payable Trade IncreaseDecreaseInAccountsPayableTrade	-876000	USD
	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	7707000	USD
	us-gaap	Increase Decrease In Accrued Liabilities IncreaseDecreaseInAccruedLiabilities	4470000	USD
	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-1528000	USD
	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-764000	USD
	us-gaap	Increase Decrease In Deferred Compensation IncreaseDecreaseInDeferredCompensation	994000	USD
	us-gaap	Increase Decrease In Deferred Compensation IncreaseDecreaseInDeferredCompensation	1107000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-1381000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	574000	USD
	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	30029000	USD
	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	22676000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	62857000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	43393000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	47024000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	29522000	USD
	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	2234000	USD
	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	1927000	USD
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	7000	USD
	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	9000	USD
	us-gaap	Payments To Acquire Notes Receivable PaymentsToAcquireNotesReceivable	10750000	USD
	us-gaap	Payments To Acquire Notes Receivable PaymentsToAcquireNotesReceivable	0	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	122770000	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	103500000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-182771000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-134940000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	213276000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	143069000	USD
	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	366000	USD
	us-gaap	Payments Of Stock Issuance Costs PaymentsOfStockIssuanceCosts	816000	USD
	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	380825000	USD
	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	151462000	USD
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	450575000	USD
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	197962000	USD
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-184000	USD
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-45000	USD
	mmsi	Payments Related To Tax Withholding For Exchange Of Common Stock PaymentsRelatedToTaxWithholdingForExchangeOfCommonStock	2616000	USD
	mmsi	Payments Related To Tax Withholding For Exchange Of Common Stock PaymentsRelatedToTaxWithholdingForExchangeOfCommonStock	0	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	140360000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	95708000	USD
	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-827000	USD
	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	30000	USD
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	19619000	USD
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	4191000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	32336000	USD
CY2016Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	19171000	USD
CY2018Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	51955000	USD
CY2017Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	23362000	USD
	us-gaap	Interest Paid Net InterestPaidNet	8018000	USD
	us-gaap	Interest Paid Net InterestPaidNet	5953000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	6069000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	4029000	USD
	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	3058000	USD
	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	1394000	USD
	mmsi	Acquisition Of Developed Technology In Accrued Expenses AcquisitionOfDevelopedTechnologyInAccruedExpenses	0	USD
	mmsi	Acquisition Of Developed Technology In Accrued Expenses AcquisitionOfDevelopedTechnologyInAccruedExpenses	12000000	USD
	mmsi	Stock Surrendered During Period Value Stock Options Exercised StockSurrenderedDuringPeriodValueStockOptionsExercised	2262000	USD
	mmsi	Stock Surrendered During Period Value Stock Options Exercised StockSurrenderedDuringPeriodValueStockOptionsExercised	0	USD
CY2018Q3	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	103258000	USD
CY2017Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	86555000	USD
CY2018Q3	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	20546000	USD
CY2017Q4	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	12799000	USD
CY2018Q3	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	57635000	USD
CY2017Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	55934000	USD
CY2018Q3	us-gaap	Inventory Net InventoryNet	181439000	USD
CY2017Q4	us-gaap	Inventory Net InventoryNet	155288000	USD
CY2018Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	1673000	USD
CY2017Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	1192000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	4494000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	2883000	USD
CY2018Q3	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	20700000	USD
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	692002	shares
CY2017Q3	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	20000000	shares
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	1300000	shares
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P5Y
	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P5Y
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0
	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0
CY2018Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	16619000	USD
CY2018Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	53431000	shares
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.31
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	32828000	USD
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	51434000	shares
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.64
CY2018Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1672000	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1662000	shares
CY2018Q3	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	16619000	USD
CY2018Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	55103000	shares
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.30
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	32828000	USD
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	53096000	shares
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.62
CY2018Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	667000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	462000	shares
CY2017Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-3569000	USD
CY2017Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	50150000	shares
CY2017Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.07
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	20717000	USD
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	48332000	shares
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.43
CY2017Q3	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1449000	shares
	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1223000	shares
CY2017Q3	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	-3569000	USD
CY2017Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	51599000	shares
CY2017Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.07
	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	20717000	USD
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	49555000	shares
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.42
CY2017Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	200000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	434000	shares
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	536955000	USD
	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	539715000	USD
	us-gaap	Net Income Loss NetIncomeLoss	20717000	USD
	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	10039000	USD
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.43
	us-gaap	Business Acquisition Pro Forma Income Loss From Continuing Operations Before Changes In Accounting And Extraordinary Items Net Of Tax Per Share Basic BusinessAcquisitionProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTaxPerShareBasic	0.21
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.42
	us-gaap	Business Acquisition Pro Forma Income Loss From Continuing Operations Before Changes In Accounting And Extraordinary Items Net Of Tax Per Share Diluted BusinessAcquisitionProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTaxPerShareDiluted	0.20
CY2018Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	221659000	USD
CY2017Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	179337000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	649504000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	536955000	USD
	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	2	segment
CY2018Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	221659000	USD
CY2017Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	179337000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	649504000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	536955000	USD
CY2018Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	21061000	USD
CY2017Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	879000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	44955000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	19850000	USD
	us-gaap	Description Of New Accounting Pronouncements Not Yet Adopted DescriptionOfNewAccountingPronouncementsNotYetAdopted	Recently Issued Financial Accounting Standards<div style="text-align:justify;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;font-weight:700;line-height:120%;">Recently Adopted</span></div><div style="text-align:justify;"><span><br/></span></div><div style="text-align:justify;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;line-height:120%;">In October 2016, the Financial Accounting Standards Board (the "FASB") issued Accounting Standards Update ("ASU") No. 2016-16, </span><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;line-height:120%;">Income Taxes (Topic 740): Intra-Entity Transfers of Assets Other than Inventory</span><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;line-height:120%;">, which requires the recognition of the income tax consequences of an intra-entity transfer of an asset, other than inventory, when the transfer occurs. ASU 2016-16 became effective for us as of January 1, 2018. The adoption of ASU 2016-16 did not have a material impact on our consolidated financial statements.</span></div><div style="text-align:justify;"><span><br/></span></div><div style="text-align:justify;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;line-height:120%;">In August 2016, the FASB issued ASU No. 2016-15, </span><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;line-height:120%;">Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments</span><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;line-height:120%;">, which addresses eight specific cash flow issues with the objective of reducing the existing diversity in practice in how certain cash receipts and cash payments are presented and classified in the statement of cash flows. We adopted ASU 2016-15 on January 1, 2018. The adoption of ASU 2016-15 did not have a material impact on our consolidated financial statements.</span></div><div style="text-align:justify;"><span><br/></span></div><div style="text-align:justify;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;line-height:120%;">In January 2016, the FASB issued ASU No. 2016-01, </span><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;line-height:120%;">Financial Instruments - Overall: Recognition and Measurement of Financial Assets and Financial Liabilities</span><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;line-height:120%;">, which amends the guidance regarding the classification and measurement of financial instruments. Changes to the current guidance primarily affect the accounting for equity investments, financial liabilities under the fair value option, and the presentation and disclosure requirements for financial instruments. In addition, ASU 2016-01 clarifies guidance related to the valuation allowance assessment when recognizing deferred tax assets resulting from unrealized losses on available-for-sale debt securities. We adopted ASU 2016-01 on January 1, 2018. The adoption of ASU 2016-01 did not have a material impact on our consolidated financial statements.</span></div><div style="text-align:justify;"><span><br/></span></div><div style="text-align:justify;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;line-height:120%;">In May 2014, the FASB issued ASU No. 2014-09, </span><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;line-height:120%;">Revenue from Contracts with Customers (Topic 606)</span><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;line-height:120%;">, which provides a single comprehensive model for entities to use in accounting for revenue arising from contracts with customers. We adopted this ASU (and all subsequent ASUs that modified Topic 606) effective January 1, 2018 on a modified retrospective basis. Adoption of this standard did not result in significant changes to our accounting policies, business processes, systems or controls, or have a material impact on our financial position, results of operations or cash flows. As such, prior period amounts are not adjusted and continue to be reported under accounting standards then in effect, and we did not record a cumulative adjustment to the opening equity balance of retained earnings as of January 1, 2018. However, additional disclosures have been added in accordance with the requirements of Topic 606 and are reflected in Note 6.</span></div><div style="text-align:justify;"><span><br/></span></div><div style="text-align:justify;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;font-weight:700;line-height:120%;">Not Yet Adopted</span></div><div style="text-align:justify;"><span><br/></span></div><div style="text-align:justify;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;line-height:120%;">In August 2018, the FASB issued ASU 2018-15, </span><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;line-height:120%;">Intangibles-Goodwill and Other-Internal-Use Software (Subtopic 350-40)</span><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;line-height:120%;">. The new guidance reduces complexity for the accounting for costs of implementing a cloud computing service arrangement and aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal use software license). ASU 2018-15 is effective for fiscal years beginning after December 15, 2019, and interim periods within those fiscal years, with early adoption permitted. Implementation may be applied either retrospectively or prospectively to all implementation costs incurred after the date of adoption. We are currently evaluating the anticipated impact of adopting ASU 2018-15 on our consolidated financial statements.</span></div><div style="text-align:justify;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;line-height:120%;">In August 2018, the FASB issued ASU 2018-13, </span><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;line-height:120%;">Fair Value Measurement (Topic 820)—Disclosure Framework—Changes to the Disclosure Requirements for Fair Value Measurement</span><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;line-height:120%;">, which modifies disclosure requirements related to fair value measurements. The amendments in this ASU are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. Implementation on a prospective or retrospective basis varies by specific disclosure requirement. The standard allows for early adoption of any removed or modified disclosures upon issuance of this ASU while delaying adoption of the additional disclosures until their effective date. We are currently evaluating the anticipated impact of adopting ASU 2018-13 on our consolidated financial statements.</span></div><div style="text-align:justify;"><span><br/></span></div><div style="text-align:justify;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;line-height:120%;">In June 2018, the FASB issued ASU 2018-07, </span><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;line-height:120%;">Compensation-Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting</span><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;line-height:120%;">, which simplifies the accounting for nonemployee share-based payment transactions by expanding the scope of ASC Topic 718, </span><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;line-height:120%;">Compensation - Stock Compensation</span><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;line-height:120%;">, to include share-based payment transactions for acquiring goods and services from nonemployees. Under the new standard, most of the guidance on stock compensation payments to nonemployees would be aligned with the requirements for share-based payments granted to employees. This standard is effective for annual reporting periods beginning after December 15, 2018, and interim periods within those fiscal years, with early adoption permitted. While we continue to assess the potential impact of this standard, we do not expect the adoption of this standard to have a material impact on our consolidated financial statements.</span></div><div style="text-align:justify;"><span><br/></span></div><div style="text-align:justify;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;line-height:120%;">In February 2018, the FASB issued ASU 2018-02, </span><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;line-height:120%;">Income Statement-Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income,</span><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;line-height:120%;"> which allows a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from U.S. federal tax legislation commonly referred to as the Tax Cuts and Jobs Act, which was enacted in December 2017 (the "2017 Tax Act"). ASU 2018-02 is effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted. While we continue to assess our adoption policy for this standard, we do not expect adoption to have a material impact on our consolidated financial statements.</span></div><div style="text-align:justify;"><span><br/></span></div><div style="text-align:justify;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;line-height:120%;">In August 2017, the FASB issued ASU 2017-12, </span><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;line-height:120%;">Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities</span><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;line-height:120%;">, which expands and refines hedge accounting for both financial and non-financial risk components, aligns the recognition and presentation of the effects of hedging instruments and hedge items in the financial statements, and includes certain targeted improvements to ease the application of current guidance related to the assessment of hedge effectiveness. ASU 2017-12 is effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early adoption is permitted. We are currently evaluating the anticipated impact of adopting ASU 2017-12 on our consolidated financial statements.</span></div><div style="text-align:justify;"><span><br/></span></div><div style="text-align:justify;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;line-height:115%;">In February 2016, the FASB issued ASU No. 2016-02, </span><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;font-style:italic;line-height:115%;">Leases (Topic 842)</span><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;line-height:115%;">, which eliminates the current tests for lease classification under U.S. GAAP and requires lessees to recognize the right-of-use assets and related lease liabilities on the balance sheet for all leases greater than one year in duration. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption of ASU 2016-02 is permitted. In July 2018, the FASB issued ASU 2018-11 to provide a transition practical expedient by allowing entities to initially apply the new leases standard at the adoption date, recognize a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption, and not restate prior periods. We expect to adopt this as well as certain other practical expedients available to us under the new guidance. We have implemented processes and information technology tools to assist in our ongoing lease data collection and analysis. We are currently finalizing our lease portfolio analysis to determine the impact to our consolidated financial statements, and currently expect that most of our operating lease commitments will be recognized as lease liabilities and right-of-use assets upon our adoption of ASU 2016-02. We are updating our accounting policies and internal controls that will be impacted by the new guidance to ensure readiness for adoption in the first quarter of 2019.</span></div><div style="text-align:justify;"><span><br/></span></div><div style="text-align:justify;"><span style="background-color:rgb(255,255,255, 0.0);color:#000000;font-family:Times New Roman;font-size:10pt;line-height:120%;">We do not believe any other issued and not yet effective accounting standards will be relevant to our consolidated financial statements.</span></div>
CY2018Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	2800000	USD
CY2017Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1400000	USD
CY2018Q3	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.143
CY2017Q3	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	-0.619
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4500000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	3900000	USD
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.120
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.158
CY2018Q3	us-gaap	Short Term Borrowings ShortTermBorrowings	7000000	USD
CY2017Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	6959000	USD
CY2018Q3	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	383000	USD
CY2017Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	487000	USD
CY2018Q3	us-gaap	Long Term Debt LongTermDebt	208867000	USD
CY2017Q4	us-gaap	Long Term Debt LongTermDebt	278472000	USD
CY2018Q3	us-gaap	Long Term Debt Current LongTermDebtCurrent	22000000	USD
CY2017Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	19459000	USD
CY2018Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	186867000	USD
CY2017Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	259013000	USD
CY2017Q4	mmsi	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesTax	1500000	USD
CY2018Q3	us-gaap	Short Term Borrowings ShortTermBorrowings	7000000.0	USD
CY2018Q3	us-gaap	Short Term Debt Percentage Bearing Variable Interest Rate ShortTermDebtPercentageBearingVariableInterestRate	0.0312
CY2018Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal Remainder Of Fiscal Year LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear	3750000	USD
CY2018Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	22000000	USD
CY2018Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	17500000	USD
CY2018Q3	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	166000000	USD
CY2018Q3	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	209250000	USD
CY2018Q3	mmsi	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesTax	2100000	USD
CY2018Q3	us-gaap	Other Asset Impairment Charges OtherAssetImpairmentCharges	0	USD
	us-gaap	Other Asset Impairment Charges OtherAssetImpairmentCharges	86000	USD
CY2017Q3	us-gaap	Other Asset Impairment Charges OtherAssetImpairmentCharges	67000	USD
	us-gaap	Other Asset Impairment Charges OtherAssetImpairmentCharges	86000	USD
CY2017Q4	us-gaap	Goodwill Goodwill	238147000	USD
	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-881000	USD
	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	11757000	USD
CY2018Q3	us-gaap	Goodwill Goodwill	249023000	USD
CY2018Q3	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	8300000	USD
CY2018Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	10500000	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	29400000	USD
CY2017Q3	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	7000000.0	USD
	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	19400000	USD
CY2018Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Remainder Of Fiscal Year FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear	10140000	USD
CY2018Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	39647000	USD
CY2018Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	38386000	USD
CY2018Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	31025000	USD
CY2018Q3	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	29141000	USD
CY2018Q3	us-gaap	Sale Of Stock Number Of Shares Issued In Transaction SaleOfStockNumberOfSharesIssuedInTransaction	4025000	shares
CY2018Q3	us-gaap	Sale Of Stock Consideration Received On Transaction SaleOfStockConsiderationReceivedOnTransaction	205400000	USD
CY2018Q3	mmsi	Payment Of Stock Issuance Costs Underwriting Discounts And Commissions PaymentOfStockIssuanceCostsUnderwritingDiscountsAndCommissions	12000000.0	USD
CY2018Q3	mmsi	Payment Of Stock Issuance Costs Other Direct Cost PaymentOfStockIssuanceCostsOtherDirectCost	366000	USD
CY2017Q1	us-gaap	Sale Of Stock Number Of Shares Issued In Transaction SaleOfStockNumberOfSharesIssuedInTransaction	5175000	shares
CY2017Q1	us-gaap	Sale Of Stock Consideration Received On Transaction SaleOfStockConsiderationReceivedOnTransaction	136600000	USD
CY2017Q1	mmsi	Payment Of Stock Issuance Costs Underwriting Discounts And Commissions PaymentOfStockIssuanceCostsUnderwritingDiscountsAndCommissions	8800000	USD
CY2017Q1	mmsi	Payment Of Stock Issuance Costs Other Direct Cost PaymentOfStockIssuanceCostsOtherDirectCost	816000	USD

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2018 Q4 Form 10-Q Financial Statement

#000085698218000078 Filed on November 09, 2018

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2018 Q4 Form 10-Q Financial Statement

#000085698218000078 Filed on November 09, 2018

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