$NWPX
NORTHWEST PIPE CO Stock $nwpx

$nwpx Overview Financials Valuation SEC Filings Company Website

2013 Q4 Form 10-K Financial Statement

#000119312515093946 Filed on March 16, 2015

Income Statement

Concept	2013 Q4	2013 Q3	2013 Q2
Revenue	$85.64M	$78.53M	$87.94M
YoY Change	-37.12%	-31.77%	-32.89%
Cost Of Revenue	$74.80M	$67.27M	$72.73M
YoY Change	-545.24%	-35.0%	-38.1%
Gross Profit	$10.85M	$11.25M	$15.21M
YoY Change	-25.26%	-2.98%	12.03%
Gross Profit Margin	12.67%	14.33%	17.3%
Selling, General & Admin	$5.200M	$5.556M	$5.941M
YoY Change	-17.46%	-26.61%	-9.98%
% of Gross Profit	47.91%	49.37%	39.06%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$3.170M	$2.930M	$3.330M
YoY Change	-31.09%	-30.4%	-20.14%
% of Gross Profit	29.21%	26.04%	21.89%
Operating Expenses	$5.200M	$5.556M	$5.941M
YoY Change	-17.46%	-26.61%	-9.98%
Operating Profit	$5.679M	$5.698M	$9.269M
YoY Change	-23.07%	41.42%	32.98%
Interest Expense	-$800.0K	$893.0K	$867.0K
YoY Change	14.29%	-31.57%	-157.8%
% of Operating Profit	-14.09%	15.67%	9.35%
Other Income/Expense, Net	$0.00	-$242.0K	$4.000K
YoY Change	-100.0%	393.88%
Pretax Income	$4.800M	$4.657M	$8.466M
YoY Change	-52.48%	71.85%	53.93%
Income Tax	$2.400M	$1.923M	$2.919M
% Of Pretax Income	50.0%	41.29%	34.48%
Net Earnings	-$17.01M	$1.016M	$5.561M
YoY Change	-477.07%	-70.08%	54.3%
Net Earnings / Revenue	-19.86%	1.29%	6.32%
Basic Earnings Per Share	-$1.80	$0.11	$0.59
Diluted Earnings Per Share	-$1.78	$0.11	$0.59
COMMON SHARES
Basic Shares Outstanding	9.449M shares	9.449M shares	9.443M shares
Diluted Shares Outstanding		9.517M shares	9.481M shares

Balance Sheet

Concept	2013 Q4	2013 Q3	2013 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$600.0K	$100.0K	$300.0K
YoY Change
Cash & Equivalents	$588.0K	$33.00K	$194.0K
Short-Term Investments		$0.00	$100.0K
Other Short-Term Assets	$8.600M	$7.000M	$8.000M
YoY Change	10.26%	12.9%	6.67%
Inventory	$110.4M	$109.9M	$115.8M
Prepaid Expenses
Receivables	$122.9M	$115.7M	$123.6M
Other Receivables	$1.100M	$1.300M	$0.00
Total Short-Term Assets	$243.6M	$234.0M	$247.8M
YoY Change	3.15%	-13.73%	-0.44%
LONG-TERM ASSETS
Property, Plant & Equipment	$143.1M	$162.6M	$162.2M
YoY Change	-6.22%	7.91%	6.29%
Goodwill	$25.76M	$20.48M
YoY Change	25.79%
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$21.06M	$16.64M	$14.90M
YoY Change	58.8%	31.04%	13.74%
Total Long-Term Assets	$189.9M	$199.7M	$197.5M
YoY Change	1.93%	8.67%	6.13%
TOTAL ASSETS
Total Short-Term Assets	$243.6M	$234.0M	$247.8M
Total Long-Term Assets	$189.9M	$199.7M	$197.5M
Total Assets	$433.5M	$433.7M	$445.3M
YoY Change	2.61%	-4.68%	2.37%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$21.73M	$22.06M	$29.50M
YoY Change	3.27%	-9.58%	-3.91%
Accrued Expenses	$10.30M	$11.88M	$17.60M
YoY Change	-56.02%	-77.03%	-56.86%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change			-100.0%
Long-Term Debt Due	$5.714M	$5.714M	$10.40M
YoY Change	0.0%	-36.51%	15.56%
Total Short-Term Liabilities	$48.22M	$55.95M	$67.00M
YoY Change	-29.85%	-40.42%	-50.77%
LONG-TERM LIABILITIES
Long-Term Debt	$643.0K	$2.071M	$69.60M
YoY Change	-89.89%	-97.28%	274.19%
Other Long-Term Liabilities	$17.30M	$13.30M	$16.00M
YoY Change	8.68%	17.71%	63.27%
Total Long-Term Liabilities	$17.95M	$15.37M	$85.60M
YoY Change	-19.45%	-82.41%	201.41%
TOTAL LIABILITIES
Total Short-Term Liabilities	$48.22M	$55.95M	$67.00M
Total Long-Term Liabilities	$17.95M	$15.37M	$85.60M
Total Liabilities	$171.6M	$156.5M	$170.0M
YoY Change	5.29%	-22.11%	-8.16%
SHAREHOLDERS EQUITY
Retained Earnings	$148.5M	$165.5M
YoY Change	-0.62%
Common Stock	$114.7M	$94.00K
YoY Change	121871.28%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$261.9M	$277.2M	$275.3M
YoY Change
Total Liabilities & Shareholders Equity	$433.5M	$433.7M	$445.3M
YoY Change	2.61%	-4.68%	2.37%

Cashflow Statement

Concept	2013 Q4	2013 Q3	2013 Q2
OPERATING ACTIVITIES
Net Income	-$17.01M	$1.016M	$5.561M
YoY Change	-477.07%	-70.08%	54.3%
Depreciation, Depletion And Amortization	$3.170M	$2.930M	$3.330M
YoY Change	-31.09%	-30.4%	-20.14%
Cash From Operating Activities	-$1.300M	$8.200M	$9.350M
YoY Change	-105.83%	-467.71%	38.72%
INVESTING ACTIVITIES
Capital Expenditures	-$6.370M	-$3.690M	-$8.610M
YoY Change	15.61%	12.84%	141.18%
Acquisitions
YoY Change
Other Investing Activities	-$15.54M	-$3.090M	-$2.840M
YoY Change	507.03%	-3533.33%	-395.83%
Cash From Investing Activities	-$21.91M	-$6.780M	-$11.45M
YoY Change	171.16%	113.88%	337.02%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	23.76M	-1.580M	2.250M
YoY Change	-267.32%	-129.26%	-153.83%
NET CHANGE
Cash From Operating Activities	-1.300M	8.200M	9.350M
Cash From Investing Activities	-21.91M	-6.780M	-11.45M
Cash From Financing Activities	23.76M	-1.580M	2.250M
Net Change In Cash	550.0K	-160.0K	150.0K
YoY Change	5400.0%		-350.0%
FREE CASH FLOW
Cash From Operating Activities	-$1.300M	$8.200M	$9.350M
Capital Expenditures	-$6.370M	-$3.690M	-$8.610M
Free Cash Flow	$5.070M	$11.89M	$17.96M
YoY Change	-81.76%	1043.27%	74.2%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2014Q2	dei	Entity Public Float EntityPublicFloat	333023765
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CY2011Q4	us-gaap	Stockholders Equity StockholdersEquity	240267000
CY2011Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	309000
CY2011Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	182000
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CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	47000	shares
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CY2012Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	46000
CY2012Q4	us-gaap	Goodwill Goodwill	20478000
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CY2013Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	9449299	shares
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CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	25.44
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CY2013Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
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CY2013Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2013Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	40000	shares
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CY2013Q4	us-gaap	Preferred Stock Value PreferredStockValue
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CY2013Q4	us-gaap	Disposal Group Including Discontinued Operation Accrued Liabilities Current DisposalGroupIncludingDiscontinuedOperationAccruedLiabilitiesCurrent	1466000
CY2013Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	19343000
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CY2013Q4	us-gaap	Common Stock Value CommonStockValue	94000
CY2013Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
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CY2013Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	643000
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CY2014Q4	us-gaap	Significant Change In Unrecognized Tax Benefits Is Reasonably Possible Amount Of Unrecorded Benefit SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit	2400000
CY2014Q4	us-gaap	Preferred Stock Value PreferredStockValue
CY2014Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Current And Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent	2100000
CY2014Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	2491000
CY2014Q4	us-gaap	Liabilities Current LiabilitiesCurrent	29556000
CY2014Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	23903000
CY2014Q4	us-gaap	Capital Lease Obligations CapitalLeaseObligations	2400000
CY2014Q4	us-gaap	Capital Lease Obligations Noncurrent CapitalLeaseObligationsNoncurrent	225000
CY2014Q4	us-gaap	Long Term Line Of Credit LongTermLineOfCredit	45587000
CY2014Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	2300000
CY2014Q4	us-gaap	Foreign Currency Cash Flow Hedge Gain Loss To Be Reclassified During Next12 Months ForeignCurrencyCashFlowHedgeGainLossToBeReclassifiedDuringNext12Months	43000
CY2014Q4	us-gaap	Common Stock Value CommonStockValue	95000
CY2014Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies
CY2014Q4	us-gaap	Capital Leases Future Minimum Payments Due In Five Years CapitalLeasesFutureMinimumPaymentsDueInFiveYears	0
CY2014Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-1833000
CY2014Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	15480000
CY2014Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	130571000
CY2014Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	1067000
CY2014Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	14015000
CY2014Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	1150000
CY2014Q4	us-gaap	Customer Advances Current CustomerAdvancesCurrent	0
CY2014Q4	us-gaap	Capital Leases Lessee Balance Sheet Assets By Major Class Accumulated Deprecation CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation	4200000
CY2014Q4	us-gaap	Capital Leases Future Minimum Payments Due Current CapitalLeasesFutureMinimumPaymentsDueCurrent	2283000
CY2014Q4	us-gaap	Billings In Excess Of Cost Current BillingsInExcessOfCostCurrent	2835000
CY2014Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	116802000
CY2014Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	8752000
CY2014Q4	us-gaap	Stockholders Equity StockholdersEquity	245635000
CY2014Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	16864000
CY2014Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	11408000
CY2014Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	651000
CY2014Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	2191000
CY2014Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	351882000
CY2014Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	522000
CY2014Q4	us-gaap	Deferred Tax Liabilities Undistributed Foreign Earnings DeferredTaxLiabilitiesUndistributedForeignEarnings	900000
CY2014Q4	us-gaap	Capital Leases Future Minimum Payments Due CapitalLeasesFutureMinimumPaymentsDue	2520000
CY2014Q4	us-gaap	Undistributed Earnings Of Foreign Subsidiaries UndistributedEarningsOfForeignSubsidiaries	2500000
CY2014Q4	us-gaap	Deferred Revenue Current DeferredRevenueCurrent	319000
CY2014Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	2313000
CY2014Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	2451000
CY2014Q4	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	165000000
CY2014Q4	us-gaap	Line Of Credit LineOfCredit	45600000
CY2014Q4	us-gaap	Liabilities Liabilities	106247000
CY2014Q4	us-gaap	Deferred Tax Assets Valuation Allowance Current DeferredTaxAssetsValuationAllowanceCurrent	719000
CY2014Q4	us-gaap	Capital Lease Obligations Current CapitalLeaseObligationsCurrent	2170000
CY2014Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	100000
CY2014Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	2557000
CY2014Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	61700000
CY2014Q4	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	6900000
CY2014Q4	us-gaap	Capital Leases Future Minimum Payments Due In Four Years CapitalLeasesFutureMinimumPaymentsDueInFourYears	0
CY2014Q4	us-gaap	Capital Leases Future Minimum Payments Due Thereafter CapitalLeasesFutureMinimumPaymentsDueThereafter	0
CY2014Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	755000
CY2014Q4	us-gaap	Capital Leases Future Minimum Payments Interest Included In Payments CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments	125000
CY2014Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	527000
CY2014Q4	us-gaap	Deferred Tax Assets Liabilities Net Current DeferredTaxAssetsLiabilitiesNetCurrent	5487000
CY2014Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	459000
CY2014Q4	us-gaap	Goodwill Goodwill	5282000
CY2014Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	132595000
CY2014Q4	us-gaap	Receivables Net Current ReceivablesNetCurrent	58310000
CY2014Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	4800000
CY2014Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	7258000
CY2014Q4	us-gaap	Deferred Tax Assets Gross Current DeferredTaxAssetsGrossCurrent	6728000
CY2014Q4	us-gaap	Deferred Tax Assets Gross Noncurrent DeferredTaxAssetsGrossNoncurrent	12177000
CY2014Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	11038000
CY2014Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	1299000
CY2014Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	3445000
CY2014Q4	us-gaap	Costs In Excess Of Billings On Uncompleted Contracts Or Programs Expected To Be Collected Within One Year CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear	45847000
CY2014Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	213000
CY2014Q4	us-gaap	Inventory Finished Goods Net Of Reserves InventoryFinishedGoodsNetOfReserves	20663000
CY2014Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	216819000
CY2014Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	424000
CY2014Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	1232000
CY2014Q4	us-gaap	Assets Assets	351882000
CY2014Q4	us-gaap	Deferred Tax Assets Inventory DeferredTaxAssetsInventory	1937000
CY2014Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	-8528000
CY2014Q4	us-gaap	Deferred Tax Assets Liabilities Net Noncurrent DeferredTaxAssetsLiabilitiesNetNoncurrent	-14015000
CY2014Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	6009000
CY2014Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	523000
CY2014Q4	us-gaap	Inventory Net InventoryNet	72779000
CY2014Q4	us-gaap	Inventory Raw Materials Net Of Reserves InventoryRawMaterialsNetOfReserves	48005000
CY2014Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	20000000
CY2014Q4	us-gaap	Tax Credit Carryforward Amount TaxCreditCarryforwardAmount	1500000
CY2014Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	1862000
CY2014Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	996000
CY2014Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	523000
CY2014Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	5031000
CY2014Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	18766000
CY2014Q4	us-gaap	Assets Current AssetsCurrent	195239000
CY2014Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefits	841000
CY2014Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	495000
CY2014Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	3967000
CY2014Q4	us-gaap	Inventory Noncurrent InventoryNoncurrent	1214000
CY2014Q4	us-gaap	Inventory Supplies Net Of Reserves InventorySuppliesNetOfReserves	2370000
CY2014Q4	us-gaap	Inventory Work In Process Net Of Reserves InventoryWorkInProcessNetOfReserves	1741000
CY2014Q4	us-gaap	Investments Investments	0
CY2014Q4	nwpx	Inventory Current And Non Current Net InventoryCurrentAndNonCurrentNet	73993000
CY2014Q4	nwpx	Billings To Date On Uncompleted Contracts BillingsToDateOnUncompletedContracts	276284000
CY2014Q4	nwpx	Number Of Series Junior Participating Preferred Stock Shares Reserved NumberOfSeriesJuniorParticipatingPreferredStockSharesReserved	150000	shares
CY2014Q4	nwpx	Right Redemption Value RightRedemptionValue	0.01
CY2014Q4	nwpx	Costs Incurred And Estimated Earnings On Uncompleted Contracts CostsIncurredAndEstimatedEarningsOnUncompletedContracts	319296000
CY2014Q4	nwpx	Deferred Tax Asset Other Assets Noncurrent DeferredTaxAssetOtherAssetsNoncurrent	6067000
CY2014Q4	nwpx	Purchase Price Under Rights PurchasePriceUnderRights	83.00
CY2014Q4	nwpx	Acquisition Percentage AcquisitionPercentage	0.15	pure
CY2014Q4	nwpx	Deferred Tax Assets Net Operating Loss Carryforward Noncurrent DeferredTaxAssetsNetOperatingLossCarryforwardNoncurrent	489000
CY2014Q4	nwpx	Amount Spent To Complete Work Specified In Work Plans AmountSpentToCompleteWorkSpecifiedInWorkPlans	100000
CY2014Q4	nwpx	Deferred Tax Asset Net Operating Loss Carryforwards Current DeferredTaxAssetNetOperatingLossCarryforwardsCurrent	93000
CY2014Q4	nwpx	Deferred Tax Assets Costs And Estimated Earnings In Excess Of Billings On Uncompleted Contracts DeferredTaxAssetsCostsAndEstimatedEarningsInExcessOfBillingsOnUncompletedContracts	2186000
CY2014Q4	nwpx	Estimated Earnings On Uncompleted Contracts EstimatedEarningsOnUncompletedContracts	53744000
CY2014Q4	nwpx	Costs Incurred On Uncompleted Contracts CostsIncurredOnUncompletedContracts	265552000
CY2014Q4	nwpx	Defined Contribution Plan Number Of Investment Options DefinedContributionPlanNumberOfInvestmentOptions	25	Investment_Options
CY2014Q4	nwpx	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Employee Benefits Non Current DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsEmployeeBenefitsNonCurrent	4483000
CY2014Q4	nwpx	Book Overdrafts BookOverdrafts	900000
CY2014Q4	nwpx	Costs And Estimated Earnings In Excess Of Billings And Billings In Excess Of Costs And Estimated Earnings Net CostsAndEstimatedEarningsInExcessOfBillingsAndBillingsInExcessOfCostsAndEstimatedEarningsNet	43012000
CY2014Q4	nwpx	Number Of Potentially Responsible Parties NumberOfPotentiallyResponsibleParties	100	Parties
CY2014Q4	nwpx	Value Of Exercised Right ValueOfExercisedRight	2	Right
CY2014Q4	nwpx	Capital Lease Weighted Average Interest Rate CapitalLeaseWeightedAverageInterestRate	0.0966	pure
CY2014Q4	nwpx	Number Of Defined Benefit Pension Plans NumberOfDefinedBenefitPensionPlans	2	Pension_Plan
CY2014Q4	nwpx	Accumulated Other Comprehensive Income Loss Unrecognized Net Actuarial Losses Net Of Tax AccumulatedOtherComprehensiveIncomeLossUnrecognizedNetActuarialLossesNetOfTax	1900000
CY2013	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-256000
CY2013	us-gaap	Stock Issued During Period Value Stock Options Exercised Net Of Tax Benefit Expense StockIssuedDuringPeriodValueStockOptionsExercisedNetOfTaxBenefitExpense	-730000
CY2013	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	15689000
CY2013	us-gaap	Operating Income Loss OperatingIncomeLoss	37535000
CY2014Q4	nwpx	Deferred Tax Assets Other Noncurrent DeferredTaxAssetsOtherNoncurrent	142000
CY2014Q4	nwpx	Deferred Tax Asset Trade Receivable Net DeferredTaxAssetTradeReceivableNet	372000
CY2014Q4	nwpx	Dividend Distribution Under Shareholder Rights Plan DividendDistributionUnderShareholderRightsPlan	1	Right
CY2014Q4	nwpx	Amount Spent For Further Source Control Work AmountSpentForFurtherSourceControlWork	100000
CY2009Q2	nwpx	Amended And Restated Rights Agreement Expiration Date AmendedAndRestatedRightsAgreementExpirationDate	2019-06-28
CY2007Q2	us-gaap	Litigation Settlement Amount LitigationSettlementAmount	200000
CY2013	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.075	pure
CY2013	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.10
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	0	shares
CY2013	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	10.31
CY2013	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	89000	shares
CY2013	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.363	pure
CY2013	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	20089000
CY2013	us-gaap	Allowance For Doubtful Accounts Receivable Period Increase Decrease AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease	-1063000
CY2013	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare	-2.39
CY2013	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.27
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	0
CY2013	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	9534000	shares
CY2013	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare	-2.37
CY2013	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.10
CY2013	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.29
CY2013	us-gaap	Line Of Credit Facility Interest Rate During Period LineOfCreditFacilityInterestRateDuringPeriod	0.0269	pure
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	0	shares
CY2013	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0
CY2013	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	93000	shares
CY2013	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	7000	shares
CY2013	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	9445000	shares
CY2013	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	646000
CY2013	us-gaap	Income Tax Reconciliation Deductions IncomeTaxReconciliationDeductions	7000
CY2013	us-gaap	Gross Profit GrossProfit	60236000
CY2013	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	9592000
CY2013	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	-100000
CY2013	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	5239000
CY2013	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	5714000
CY2013	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	180334000
CY2013	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	845000
CY2013	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	1012000
CY2013	us-gaap	Disposal Group Including Discontinued Operation Interest Income DisposalGroupIncludingDiscontinuedOperationInterestIncome	47000
CY2013	us-gaap	Sales Revenue Net SalesRevenueNet	359445000
CY2013	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-307000
CY2013	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-8261000
CY2013	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	24212000
CY2013	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	89000
CY2013	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	409000
CY2013	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-22599000
CY2013	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	34034000
CY2013	us-gaap	Disposal Group Including Discontinued Operation Revenue DisposalGroupIncludingDiscontinuedOperationRevenue	116111000
CY2013	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	-37083000
CY2013	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	1012000
CY2013	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	126000
CY2013	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-289000
CY2013	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	540000
CY2013	us-gaap	Interest Paid Net InterestPaidNet	3277000
CY2013	us-gaap	Income Tax Reconciliation Deductions Qualified Production Activities IncomeTaxReconciliationDeductionsQualifiedProductionActivities	641000
CY2013	us-gaap	Increase Decrease In Cost In Excess Of Billing On Uncompleted Contract IncreaseDecreaseInCostInExcessOfBillingOnUncompletedContract	-19736000
CY2013	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	21676000
CY2013	us-gaap	Disposal Group Including Discontinued Operation Operating Income Loss DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss	-36786000
CY2013	us-gaap	Disposal Group Including Discontinued Operation Gross Profit Loss DisposalGroupIncludingDiscontinuedOperationGrossProfitLoss	-7777000
CY2013	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	28447000
CY2013	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-54000
CY2013	us-gaap	Net Income Loss NetIncomeLoss	-923000
CY2013	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	3060000
CY2013	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	802000
CY2013	us-gaap	Payments To Acquire Notes Receivable PaymentsToAcquireNotesReceivable	5700000
CY2013	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	99000
CY2013	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	1073000
CY2013	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	1656000
CY2013	us-gaap	Adjustments To Additional Paid In Capital Income Tax Deficiency From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalIncomeTaxDeficiencyFromShareBasedCompensation	1000
CY2013	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	3060000
CY2013	us-gaap	Asset Impairment Charges AssetImpairmentCharges	27500000
CY2013	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-7994000
CY2013	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-59000
CY2013	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	-3901000
CY2013	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	400000
CY2013	us-gaap	Interest Expense InterestExpense	3621000
CY2013	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	22701000
CY2013	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	634000
CY2013	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-60000
CY2013	us-gaap	Disposal Group Including Discontinued Operation General And Administrative Expense DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpense	1509000
CY2013	us-gaap	Interest Expense Debt InterestExpenseDebt	3600000
CY2013	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	27000
CY2013	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	542000
CY2013	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	-15226000
CY2013	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	11921000
CY2013	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	12358000
CY2013	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-48251000
CY2013	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	2800000
CY2013	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	311000
CY2013	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	9097000
CY2013	us-gaap	Cost Of Revenue CostOfRevenue	299209000
CY2013	us-gaap	Depreciation Depreciation	13272000
CY2013	us-gaap	Depreciation And Amortization DepreciationAndAmortization	13299000
CY2013	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	5282000
CY2013	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	72000
CY2013	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	1711000
CY2013	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	690000
CY2013	us-gaap	Disposal Group Including Discontinued Operation Interest Expense DisposalGroupIncludingDiscontinuedOperationInterestExpense	344000
CY2013	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	345000
CY2013	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	28704000
CY2013	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-913000
CY2013	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	9787000
CY2013	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	400000
CY2013	us-gaap	Disposal Group Including Discontinued Operation Costs Of Goods Sold DisposalGroupIncludingDiscontinuedOperationCostsOfGoodsSold	123888000
CY2013	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	370000
CY2013	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	59000
CY2013	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-167000
CY2013	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	1374000
CY2013	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	220721000
CY2013	us-gaap	Share Based Compensation ShareBasedCompensation	3060000
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	100000
CY2013	us-gaap	Tangible Asset Impairment Charges TangibleAssetImpairmentCharges	27500000
CY2013	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	100000
CY2013	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	2631000
CY2013	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	-14484000
CY2013	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	954000
CY2013	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	696000
CY2013	nwpx	Retirement Plan Expense RetirementPlanExpense	1800000
CY2013	nwpx	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Tax Expense Benefit AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansTaxExpenseBenefit	704000
CY2013	nwpx	Number Of Customers With Receivable Balance In Excess Of Ten Percent Of Receivables NumberOfCustomersWithReceivableBalanceInExcessOfTenPercentOfReceivables	2	Customer
CY2013	nwpx	Accumulated Other Comprehensive Income Loss Cumulative Change In Net Gain Loss From Cash Flow Hedge Effect Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangeInNetGainLossFromCashFlowHedgeEffectTax	9000
CY2013	nwpx	Federal And State Deferred Income Tax Expense Benefit FederalAndStateDeferredIncomeTaxExpenseBenefit	2571000
CY2013	nwpx	Nonrecurring Fair Value Measurement Impairment Charge NonrecurringFairValueMeasurementImpairmentCharge	300000
CY2013	nwpx	Discontinued Operation Income Loss From Discontinued Operation Before Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeTax	-9583000
CY2013	nwpx	Income Tax Reconciliation Tax Federal And State Tax Credits IncomeTaxReconciliationTaxFederalAndStateTaxCredits	525000
CY2014	us-gaap	Defined Benefit Plan Assumptions Used Calculating Net Periodic Benefit Cost Expected Long Term Return On Assets DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets	0.075	pure
CY2014	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.88
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	0	shares
CY2014	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	14.00
CY2014	dei	Document Type DocumentType	10-K
CY2014	dei	Entity Registrant Name EntityRegistrantName	NORTHWEST PIPE CO
CY2014	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2014	dei	Trading Symbol TradingSymbol	NWPX
CY2014	dei	Entity Filer Category EntityFilerCategory	Accelerated Filer
CY2014	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2014	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	3.056	pure
CY2014	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	35044000
CY2014	us-gaap	Allowance For Doubtful Accounts Receivable Period Increase Decrease AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease	70000
CY2014	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare	-1.23
CY2014	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.65
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2014	us-gaap	Use Of Estimates UseOfEstimates	<div> <p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 18pt"> <b>Use of Estimates</b></p> <p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 6pt; TEXT-INDENT: 4%"> 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 reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. The Company bases its estimates on historical experience and on various assumptions that are believed to be reasonable under the circumstances at that time. On an on-going basis, the Company evaluates all of its estimates, including those related to revenue recognition, allowance for doubtful accounts, goodwill, long-lived assets, including depreciation and amortization, inventories, income taxes, and litigation and other contingencies. Actual results could differ from those estimates under different assumptions or conditions</p> </div>
CY2014	dei	Document Period End Date DocumentPeriodEndDate	2014-12-31
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	0
CY2014	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P3Y8M5D
CY2014	dei	Amendment Flag AmendmentFlag	false
CY2014	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2014	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2014
CY2014	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	9515000	shares
CY2014	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare	-1.23
CY2014	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.88
CY2014	us-gaap	Finite Lived Intangible Assets Remaining Amortization Period1 FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1	P8Y9M18D
CY2014	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-0.65
CY2014	us-gaap	Line Of Credit Facility Interest Rate During Period LineOfCreditFacilityInterestRateDuringPeriod	0.0243	pure
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period1 ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1	P60M
CY2014	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P3Y8M5D
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	0	shares
CY2014	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0
CY2014	dei	Entity Central Index Key EntityCentralIndexKey	0001001385
CY2014	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35	pure
CY2014	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2014	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	65000	shares
CY2014	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2	Segment
CY2014	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div> <p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 18pt"> <b>Concentrations of Credit Risk</b></p> <p style="MARGIN-BOTTOM: 0pt; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman; MARGIN-TOP: 6pt; TEXT-INDENT: 4%"> Financial instruments, which potentially subject the Company to concentrations of credit risk, consist principally of trade receivables, derivative contracts, the escrow account related to the sale of the OCTG business, and deferred compensation plan assets. Trade receivables generally represent a large number of customers, including municipalities, manufacturers, distributors and contractors, dispersed across a wide geographic base. At December 31, 2014, one customer had a balance in excess of 10% of total accounts receivable. At December 31, 2013, two customers had a balance in excess of 10% of total accounts receivable. Derivative contracts are with a financial institution whose short-term investments are rated A-1 by Standard and Poor’s. The Company’s deferred compensation plan assets, also included in other assets, are invested in a diversified portfolio of stock and bond mutual funds.</p> </div>
CY2014	us-gaap	Debt Instrument Maturity Date DebtInstrumentMaturityDate	2017-10-24
CY2014	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	101000
CY2014	us-gaap	Income Tax Reconciliation Deductions IncomeTaxReconciliationDeductions	-5000
CY2014	us-gaap	Gross Profit GrossProfit	40576000
CY2014	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1982000
CY2014	us-gaap	Discontinued Operation Gain Loss From Disposal Of Discontinued Operation Before Income Tax DiscontinuedOperationGainLossFromDisposalOfDiscontinuedOperationBeforeIncomeTax	-13497000
CY2014	us-gaap	Disposal Group Including Discontinued Operation Revenue DisposalGroupIncludingDiscontinuedOperationRevenue	22225000
CY2014	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	-15648000
CY2014	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-31000
CY2014	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	108000
CY2014	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	285000
CY2014	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	2000	shares
CY2014	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2014	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	9515000	shares
CY2014	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	100000
CY2014	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	1255000
CY2014	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	6357000
CY2014	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	272913000
CY2014	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-684000
CY2014	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-572000
CY2014	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	553000
CY2014	us-gaap	Sales Revenue Net SalesRevenueNet	403298000
CY2014	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-754000
CY2014	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-6039000
CY2014	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	-7984000
CY2014	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-489000
CY2014	us-gaap	Stock Issued During Period Value Stock Options Exercised Net Of Tax Benefit Expense StockIssuedDuringPeriodValueStockOptionsExercisedNetOfTaxBenefitExpense	-1255000
CY2014	us-gaap	Operating Income Loss OperatingIncomeLoss	194000
CY2014	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-18459000
CY2014	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	466000
CY2014	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-11714000
CY2014	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-1522000
CY2014	us-gaap	Interest Paid Net InterestPaidNet	2271000
CY2014	us-gaap	Increase Decrease In Cost In Excess Of Billing On Uncompleted Contract IncreaseDecreaseInCostInExcessOfBillingOnUncompletedContract	-4088000
CY2014	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-6173000
CY2014	us-gaap	Goodwill Written Off Related To Sale Of Business Unit GoodwillWrittenOffRelatedToSaleOfBusinessUnit	4412000
CY2014	us-gaap	Disposal Group Including Discontinued Operation Operating Income Loss DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss	-2052000
CY2014	us-gaap	Disposal Group Including Discontinued Operation Gross Profit Loss DisposalGroupIncludingDiscontinuedOperationGrossProfitLoss	-1656000
CY2014	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	14289000
CY2014	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-12000
CY2014	us-gaap	Net Income Loss NetIncomeLoss	-17887000
CY2014	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	2946000
CY2014	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	553000
CY2014	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1283000
CY2014	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	137000
CY2014	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	-4573000
CY2014	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	200000
CY2014	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	15000
CY2014	us-gaap	Increase Decrease In Income Taxes Receivable IncreaseDecreaseInIncomeTaxesReceivable	3405000
CY2014	us-gaap	Interest Expense InterestExpense	2290000
CY2014	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	24316000
CY2014	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromCurrentPeriodTaxPositions	615000
CY2014	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	3265000
CY2014	us-gaap	Income Tax Reconciliation Tax Exempt Income IncomeTaxReconciliationTaxExemptIncome	611000
CY2014	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	804000
CY2014	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	1243000
CY2014	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	2946000
CY2014	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	2894000
CY2014	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	377000
CY2014	us-gaap	Business Combination Contingent Consideration Arrangements Change In Amount Of Contingent Consideration Liability1 BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1	-1746000
CY2014	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-324000
CY2014	us-gaap	Disposal Group Including Discontinued Operation General And Administrative Expense DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpense	396000
CY2014	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	553000
CY2014	us-gaap	Interest Expense Debt InterestExpenseDebt	2300000
CY2014	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	540000
CY2014	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-61000
CY2014	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	-881000
CY2014	us-gaap	Income Tax Reconciliation Nondeductible Expense Impairment Losses IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses	5623000
CY2014	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-532000
CY2014	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4651000
CY2014	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	15541000
CY2014	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	3200000
CY2014	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	393000
CY2014	us-gaap	Proceeds From Divestiture Of Businesses ProceedsFromDivestitureOfBusinesses	29791000
CY2014	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	4336000
CY2014	us-gaap	Cost Of Revenue CostOfRevenue	362722000
CY2014	us-gaap	Depreciation Depreciation	13606000
CY2014	us-gaap	Depreciation And Amortization DepreciationAndAmortization	14146000
CY2014	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	28000
CY2014	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	8000
CY2014	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	334000
CY2014	us-gaap	Disposal Group Including Discontinued Operation Interest Expense DisposalGroupIncludingDiscontinuedOperationInterestExpense	99000
CY2014	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	16066000
CY2014	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	207000
CY2014	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-50646000
CY2014	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	587000
CY2014	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	4670000
CY2014	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	200000
CY2014	us-gaap	Disposal Group Including Discontinued Operation Costs Of Goods Sold DisposalGroupIncludingDiscontinuedOperationCostsOfGoodsSold	23881000
CY2014	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-96000
CY2014	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	9000
CY2014	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-112000
CY2014	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-5273000
CY2014	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	230581000
CY2014	us-gaap	Share Based Compensation ShareBasedCompensation	2946000
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	43000
CY2014	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	-100000
CY2014	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	305000
CY2014	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	-3934000
CY2014	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	9000
CY2014	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	115000
CY2014	nwpx	Non Qualified Retirement Savings Plan Target Benefit Amount NonQualifiedRetirementSavingsPlanTargetBenefitAmount	35% of final base pay after a 35-year career with the Company or 1% of final base pay per year of service.
CY2014	nwpx	Non Qualified Retirement Savings Plan Actuarial Yearly Asset Growth Percentage Assumption NonQualifiedRetirementSavingsPlanActuarialYearlyAssetGrowthPercentageAssumption	0.08	pure
CY2014	nwpx	Retirement Plan Expense RetirementPlanExpense	1800000
CY2014	nwpx	Select Employee Contribution For Which Company Will Match At Fifty Percent SelectEmployeeContributionForWhichCompanyWillMatchAtFiftyPercent	5000
CY2014	nwpx	Company Matching Percentage On First Ten Thousand Dollar Employee Contributions CompanyMatchingPercentageOnFirstTenThousandDollarEmployeeContributions	0.50	pure
CY2014	nwpx	Change In Gross Profit Which Triggers Management Review ChangeInGrossProfitWhichTriggersManagementReview	0.02	pure
CY2014	nwpx	Tax Credit Carry Forward Expiration Year TaxCreditCarryForwardExpirationYear	2015
CY2014	nwpx	Operating Loss Carryforward Expiration Year Lower Limit OperatingLossCarryforwardExpirationYearLowerLimit	2018
CY2014	nwpx	Maximum Performance Awards Issued Multiplier MaximumPerformanceAwardsIssuedMultiplier	2.00	pure
CY2014	nwpx	Maturity Period For Forward Contracts MaturityPeriodForForwardContracts	P12M
CY2014	nwpx	Number Of Manufacturing Facility Locations Water Transmission NumberOfManufacturingFacilityLocationsWaterTransmission	8	ManufacturingSites
CY2014	nwpx	Operating Loss Carryforward Expiration Year Upper Limit OperatingLossCarryforwardExpirationYearUpperLimit	2031
CY2014	nwpx	Minimum Performance Awards Issued Multiplier MinimumPerformanceAwardsIssuedMultiplier	0.00	pure
CY2014	nwpx	Employee Contribution Percentage For Which Company Will Match At Fifty Percent EmployeeContributionPercentageForWhichCompanyWillMatchAtFiftyPercent	0.06	pure
CY2014	nwpx	Minimum Percentage Of Likelihood Of Tax Benefit Being Realized Upon Settlement MinimumPercentageOfLikelihoodOfTaxBenefitBeingRealizedUponSettlement	0.50	pure
CY2014	nwpx	Share Based Compensation Arrangement By Share Based Payment Award Options Award Expiration Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAwardExpirationPeriod	P10Y
CY2014	nwpx	Number Of Inactive Stock Option Plans NumberOfInactiveStockOptionPlans	1	OptionPlan
CY2014	nwpx	Number Of Active Stock Incentive Plans NumberOfActiveStockIncentivePlans	1	OptionPlan
CY2014	nwpx	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Tax Expense Benefit AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansTaxExpenseBenefit	1108000
CY2014	nwpx	Officer Contribution For Which Company Will Match At Fifty Percent OfficerContributionForWhichCompanyWillMatchAtFiftyPercent	10000
CY2014	nwpx	Number Of Customers With Receivable Balance In Excess Of Ten Percent Of Receivables NumberOfCustomersWithReceivableBalanceInExcessOfTenPercentOfReceivables	1	Customer
CY2014	nwpx	Accumulated Other Comprehensive Income Loss Cumulative Change In Net Gain Loss From Cash Flow Hedge Effect Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangeInNetGainLossFromCashFlowHedgeEffectTax	14000
CY2014	nwpx	Maximum Duration Of Operating Leases MaximumDurationOfOperatingLeases	P10Y
CY2014	nwpx	Federal And State Deferred Income Tax Expense Benefit FederalAndStateDeferredIncomeTaxExpenseBenefit	-19000
CY2014	nwpx	Company Matching Percentage On First Six Percent Of Employee Contributions CompanyMatchingPercentageOnFirstSixPercentOfEmployeeContributions	0.50	pure
CY2014	nwpx	Discontinued Operation Income Loss From Discontinued Operation Before Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeTax	-2151000
CY2014	nwpx	Number Of Non Contributory Defined Benefit Plans NumberOfNonContributoryDefinedBenefitPlans	2	OptionPlan
CY2014	nwpx	Income Tax Reconciliation Tax Federal And State Tax Credits IncomeTaxReconciliationTaxFederalAndStateTaxCredits	91000
CY2012	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.72
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	0	shares
CY2012	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	17.58
CY2012	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	68000	shares
CY2012	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.324	pure
CY2012	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	44490000
CY2012	us-gaap	Allowance For Doubtful Accounts Receivable Period Increase Decrease AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease	98000
CY2012	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare	-0.14
CY2012	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.85
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	0	shares
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	0
CY2012	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	9445000	shares
CY2012	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare	-0.13
CY2012	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.73
CY2012	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.87
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	0	shares
CY2012	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	0
CY2012	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	92000	shares
CY2012	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	24597	shares
CY2012	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	9377000	shares
CY2012	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	3571000
CY2012	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	2640000
CY2012	us-gaap	Income Tax Reconciliation Deductions IncomeTaxReconciliationDeductions	67000
CY2012	us-gaap	Gross Profit GrossProfit	59108000
CY2012	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	5007000
CY2012	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	-400000
CY2012	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	3373000
CY2012	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	5714000
CY2012	us-gaap	Repayments Of Long Term Lines Of Credit RepaymentsOfLongTermLinesOfCredit	133468000
CY2012	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	39000
CY2012	us-gaap	Escrow Deposit Disbursements Related To Property Acquisition1 EscrowDepositDisbursementsRelatedToPropertyAcquisition1	898000
CY2012	us-gaap	Disposal Group Including Discontinued Operation Interest Income DisposalGroupIncludingDiscontinuedOperationInterestIncome	13000
CY2012	us-gaap	Sales Revenue Net SalesRevenueNet	388902000
CY2012	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-5480000
CY2012	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	5582000
CY2012	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	-28298000
CY2012	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-998000
CY2012	us-gaap	Stock Issued During Period Value Stock Options Exercised Net Of Tax Benefit Expense StockIssuedDuringPeriodValueStockOptionsExercisedNetOfTaxBenefitExpense	-175000
CY2012	us-gaap	Operating Income Loss OperatingIncomeLoss	31286000
CY2012	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	16283000
CY2012	us-gaap	Other Interest And Dividend Income OtherInterestAndDividendIncome	147000
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-1257000
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	25889000
CY2012	us-gaap	Disposal Group Including Discontinued Operation Revenue DisposalGroupIncludingDiscontinuedOperationRevenue	135601000
CY2012	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Before Income Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax	-4124000
CY2012	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	1549000
CY2012	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-60000
CY2012	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	1599000
CY2012	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-339000
CY2012	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	50000
CY2012	us-gaap	Interest Paid Net InterestPaidNet	4353000
CY2012	us-gaap	Income Tax Reconciliation Deductions Qualified Production Activities IncomeTaxReconciliationDeductionsQualifiedProductionActivities	762000
CY2012	us-gaap	Increase Decrease In Cost In Excess Of Billing On Uncompleted Contract IncreaseDecreaseInCostInExcessOfBillingOnUncompletedContract	36621000
CY2012	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	17501000
CY2012	us-gaap	Disposal Group Including Discontinued Operation Operating Income Loss DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss	-3726000
CY2012	us-gaap	Disposal Group Including Discontinued Operation Gross Profit Loss DisposalGroupIncludingDiscontinuedOperationGrossProfitLoss	-2910000
CY2012	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	16789000
CY2012	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-216000
CY2012	us-gaap	Net Income Loss NetIncomeLoss	16244000
CY2012	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	3048000
CY2012	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	27000
CY2012	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	9000
CY2012	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	212000
CY2012	us-gaap	Selling General And Administrative Expense SellingGeneralAndAdministrativeExpense	27822000
CY2012	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	1318000
CY2012	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	117000
CY2012	us-gaap	Disposal Group Including Discontinued Operation General And Administrative Expense DisposalGroupIncludingDiscontinuedOperationGeneralAndAdministrativeExpense	816000
CY2012	us-gaap	Interest Expense Debt InterestExpenseDebt	5200000
CY2012	us-gaap	Payments To Acquire Notes Receivable PaymentsToAcquireNotesReceivable	1000000
CY2012	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-99000
CY2012	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	142000
CY2012	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	2777000
CY2012	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	3048000
CY2012	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-4120000
CY2012	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-335000
CY2012	us-gaap	Increase Decrease In Deferred Revenue IncreaseDecreaseInDeferredRevenue	7764000
CY2012	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	200000
CY2012	us-gaap	Interest Expense InterestExpense	5205000
CY2012	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-136000
CY2012	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	11392000
CY2012	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	9083000
CY2012	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8388000
CY2012	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-19297000
CY2012	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	2900000
CY2012	us-gaap	Proceeds From Income Tax Refunds ProceedsFromIncomeTaxRefunds	1834000
CY2012	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	8409000
CY2012	us-gaap	Cost Of Revenue CostOfRevenue	329794000
CY2012	us-gaap	Depreciation Depreciation	16240000
CY2012	us-gaap	Depreciation And Amortization DepreciationAndAmortization	16267000
CY2012	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	37000
CY2012	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	1072000
CY2012	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	278000
CY2012	us-gaap	Disposal Group Including Discontinued Operation Interest Expense DisposalGroupIncludingDiscontinuedOperationInterestExpense	411000
CY2012	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	247000
CY2012	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-25329000
CY2012	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-138000
CY2012	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	8687000
CY2012	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	400000
CY2012	us-gaap	Disposal Group Including Discontinued Operation Costs Of Goods Sold DisposalGroupIncludingDiscontinuedOperationCostsOfGoodsSold	138511000
CY2012	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	601000
CY2012	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	94000
CY2012	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-310000
CY2012	us-gaap	Proceeds From Long Term Lines Of Credit ProceedsFromLongTermLinesOfCredit	119000000
CY2012	us-gaap	Share Based Compensation ShareBasedCompensation	3048000
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	100000
CY2012	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	100000
CY2012	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-416000
CY2012	us-gaap	Discontinued Operation Tax Effect Of Discontinued Operation DiscontinuedOperationTaxEffectOfDiscontinuedOperation	-2867000
CY2012	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	184000
CY2012	nwpx	Retirement Plan Expense RetirementPlanExpense	1700000
CY2012	nwpx	Federal And State Deferred Income Tax Expense Benefit FederalAndStateDeferredIncomeTaxExpenseBenefit	-299000
CY2012	nwpx	Nonrecurring Fair Value Measurement Impairment Charge NonrecurringFairValueMeasurementImpairmentCharge	0
CY2012	nwpx	Discontinued Operation Income Loss From Discontinued Operation Before Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeTax	-4124000
CY2012	nwpx	Income Tax Reconciliation Tax Federal And State Tax Credits IncomeTaxReconciliationTaxFederalAndStateTaxCredits	379000
CY2013Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.00
CY2013Q1	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare	-0.15
CY2013Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.16
CY2013Q1	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare	-0.16
CY2013Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.01
CY2013Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.16
CY2013Q1	us-gaap	Gross Profit GrossProfit	22919000
CY2013Q1	us-gaap	Sales Revenue Net SalesRevenueNet	107335000
CY2013Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	16889000
CY2013Q1	us-gaap	Net Income Loss NetIncomeLoss	9506000
CY2014Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.27
CY2014Q1	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare	-1.14
CY2014Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.13
CY2014Q1	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare	-1.14
CY2014Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.27
CY2014Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-0.13
CY2014Q1	us-gaap	Gross Profit GrossProfit	4314000
CY2014Q1	us-gaap	Sales Revenue Net SalesRevenueNet	82647000
CY2014Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	-1126000
CY2014Q1	us-gaap	Net Income Loss NetIncomeLoss	-12104000
CY2013Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.59
CY2013Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.59
CY2013Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.59
CY2013Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.59
CY2013Q2	us-gaap	Gross Profit GrossProfit	15210000
CY2013Q2	us-gaap	Sales Revenue Net SalesRevenueNet	87942000
CY2013Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	9269000
CY2013Q2	us-gaap	Net Income Loss NetIncomeLoss	5561000
CY2014Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.33
CY2014Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.33
CY2014Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.34
CY2014Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.34
CY2014Q2	us-gaap	Gross Profit GrossProfit	11317000
CY2014Q2	us-gaap	Sales Revenue Net SalesRevenueNet	101988000
CY2014Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	5399000
CY2014Q2	us-gaap	Net Income Loss NetIncomeLoss	3192000
CY2013Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.11
CY2013Q3	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare	-0.18
CY2013Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.29
CY2013Q3	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare	-0.18
CY2013Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.11
CY2013Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.29
CY2013Q3	us-gaap	Gross Profit GrossProfit	11254000
CY2013Q3	us-gaap	Sales Revenue Net SalesRevenueNet	78527000
CY2013Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	5698000
CY2013Q3	us-gaap	Net Income Loss NetIncomeLoss	1016000
CY2014Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.52
CY2014Q3	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare	-0.09
CY2014Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.61
CY2014Q3	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare	-0.09
CY2014Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.53
CY2014Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.62
CY2014Q3	us-gaap	Gross Profit GrossProfit	15820000
CY2014Q3	us-gaap	Sales Revenue Net SalesRevenueNet	116505000
CY2014Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	9331000
CY2014Q3	us-gaap	Net Income Loss NetIncomeLoss	5021000
CY2013Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.78
CY2013Q4	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Basic Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare	-2.06
CY2013Q4	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.25
CY2013Q4	us-gaap	Discontinued Operation Income Loss From Discontinued Operation Net Of Tax Per Diluted Share DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerDilutedShare	-2.03
CY2013Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.80
CY2013Q4	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.26
CY2013Q4	us-gaap	Gross Profit GrossProfit	10853000
CY2013Q4	us-gaap	Sales Revenue Net SalesRevenueNet	85641000
CY2013Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	5679000
CY2013Q4	us-gaap	Net Income Loss NetIncomeLoss	-17006000
CY2014Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-1.47
CY2014Q4	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-1.47
CY2014Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-1.47
CY2014Q4	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-1.47
CY2014Q4	us-gaap	Gross Profit GrossProfit	9125000
CY2014Q4	us-gaap	Sales Revenue Net SalesRevenueNet	102158000
CY2014Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	-13410000
CY2014Q4	us-gaap	Net Income Loss NetIncomeLoss	-13996000

Files In Submission

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$NWPX
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2013 Q4 Form 10-K Financial Statement

#000119312515093946 Filed on March 16, 2015

Income Statement

Balance Sheet

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$NWPX NORTHWEST PIPE CO Stock $nwpx

2013 Q4 Form 10-K Financial Statement

#000119312515093946 Filed on March 16, 2015

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NWPX
NORTHWEST PIPE CO Stock $nwpx