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v2.4.1.9

Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Mar. 31, 2015 | Mar. 31, 2014 | Mar. 31, 2013
Operating activities: |  |  |
Net income | $ 14,735 us-gaap_NetIncomeLoss | $ 10,145 us-gaap_NetIncomeLoss | $ 11,148 us-gaap_NetIncomeLoss
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Depreciation | 2,079 us-gaap_Depreciation | 1,977 us-gaap_Depreciation | 1,851 us-gaap_Depreciation
Amortization | 229 us-gaap_AmortizationOfIntangibleAssets | 222 us-gaap_AmortizationOfIntangibleAssets | 228 us-gaap_AmortizationOfIntangibleAssets
Amortization of unrecognized prior service cost and actuarial losses | 514 ghm_AmortizationOfUnrecognizedPriorServiceCostAndActuarialLosses | 886 ghm_AmortizationOfUnrecognizedPriorServiceCostAndActuarialLosses | 893 ghm_AmortizationOfUnrecognizedPriorServiceCostAndActuarialLosses
Discount accretion on investments |  | (8)us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments | (15)us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments
Stock-based compensation expense | 653 us-gaap_ShareBasedCompensation | 639 us-gaap_ShareBasedCompensation | 576 us-gaap_ShareBasedCompensation
Loss on disposal or sale of property, plant and equipment | 14 us-gaap_GainLossOnDispositionOfAssets | 223 us-gaap_GainLossOnDispositionOfAssets | 85 us-gaap_GainLossOnDispositionOfAssets
Deferred income taxes | 157 us-gaap_DeferredIncomeTaxExpenseBenefit | (1,011)us-gaap_DeferredIncomeTaxExpenseBenefit | (2,357)us-gaap_DeferredIncomeTaxExpenseBenefit
(Increase) decrease in operating assets: |  |  |
Accounts receivable | (6,910)us-gaap_IncreaseDecreaseInAccountsReceivable | (1,001)us-gaap_IncreaseDecreaseInAccountsReceivable | 2,264 us-gaap_IncreaseDecreaseInAccountsReceivable
Unbilled revenue | (10,835)us-gaap_IncreaseDecreaseInUnbilledReceivables | 5,318 us-gaap_IncreaseDecreaseInUnbilledReceivables | (415)us-gaap_IncreaseDecreaseInUnbilledReceivables
Inventories | 2,525 us-gaap_IncreaseDecreaseInInventories | (5,161)us-gaap_IncreaseDecreaseInInventories | (5,311)us-gaap_IncreaseDecreaseInInventories
Income taxes receivable/payable | 158 us-gaap_IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable | 2,137 us-gaap_IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable | 1,845 us-gaap_IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable
Prepaid expenses and other current and non-current assets | (152)us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets | 185 us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets | (300)us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
Prepaid pension asset | (1,108)ghm_IncreaseDecreaseInDefinedBenefitPlanAssetsForPlanBenefitsNoncurrent | (793)ghm_IncreaseDecreaseInDefinedBenefitPlanAssetsForPlanBenefitsNoncurrent | (767)ghm_IncreaseDecreaseInDefinedBenefitPlanAssetsForPlanBenefitsNoncurrent
Increase (decrease) in operating liabilities: |  |  |
Accounts payable | 3,115 us-gaap_IncreaseDecreaseInAccountsPayable | 595 us-gaap_IncreaseDecreaseInAccountsPayable | 2,957 us-gaap_IncreaseDecreaseInAccountsPayable
Accrued compensation, accrued expenses and other current and non-current liabilities | 4,981 ghm_IncreaseDecreaseInAccruedCompensationAccruedExpensesAndOtherCurrentAndNonCurrentLiabilities | 28 ghm_IncreaseDecreaseInAccruedCompensationAccruedExpensesAndOtherCurrentAndNonCurrentLiabilities | 59 ghm_IncreaseDecreaseInAccruedCompensationAccruedExpensesAndOtherCurrentAndNonCurrentLiabilities
Customer deposits | (3,834)us-gaap_IncreaseDecreaseInBillingInExcessOfCostOfEarnings | 1,009 us-gaap_IncreaseDecreaseInBillingInExcessOfCostOfEarnings | (255)us-gaap_IncreaseDecreaseInBillingInExcessOfCostOfEarnings
Long-term portion of accrued compensation, accrued pension liability and accrued postretirement benefits | (42)ghm_IncreaseDecreaseInLongTermPortionOfAccruedCompensationAccruedPensionLiabilityAndAccruedPostretirementBenefits | (160)ghm_IncreaseDecreaseInLongTermPortionOfAccruedCompensationAccruedPensionLiabilityAndAccruedPostretirementBenefits | (54)ghm_IncreaseDecreaseInLongTermPortionOfAccruedCompensationAccruedPensionLiabilityAndAccruedPostretirementBenefits
Net cash provided by operating activities | 6,279 us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations | 15,230 us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations | 12,432 us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
Investing activities: |  |  |
Purchase of property, plant and equipment | (5,300)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment | (5,263)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment | (1,655)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Proceeds from disposal of property, plant and equipment | 1 us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment | 32 us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment | 37 us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment
Purchase of investments | (50,000)us-gaap_PaymentsToAcquireHeldToMaturitySecurities | (109,494)us-gaap_PaymentsToAcquireHeldToMaturitySecurities | (83,984)us-gaap_PaymentsToAcquireHeldToMaturitySecurities
Redemption of investments at maturity | 46,000 us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities | 108,000 us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities | 73,000 us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities
Net cash used by investing activities | (9,299)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations | (6,725)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations | (12,602)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
Financing activities: |  |  |
Principal repayments on capital lease obligations | (80)us-gaap_RepaymentsOfLongTermCapitalLeaseObligations | (88)us-gaap_RepaymentsOfLongTermCapitalLeaseObligations | (85)us-gaap_RepaymentsOfLongTermCapitalLeaseObligations
Issuance of common stock | 47 us-gaap_ProceedsFromStockOptionsExercised | 581 us-gaap_ProceedsFromStockOptionsExercised | 83 us-gaap_ProceedsFromStockOptionsExercised
Dividends paid | (2,026)us-gaap_PaymentsOfDividendsCommonStock | (1,308)us-gaap_PaymentsOfDividendsCommonStock | (899)us-gaap_PaymentsOfDividendsCommonStock
Excess tax deduction on stock awards | 200 us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities | 271 us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities | 43 us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities
Net cash used by financing activities | (1,859)us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations | (544)us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations | (858)us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
Effect of exchange rate changes on cash | 4 us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents | (9)us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents | 33 us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents
Net (decrease) increase in cash and cash equivalents | (4,875)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease | 7,952 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease | (995)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
Cash and cash equivalents at beginning of year | 32,146 us-gaap_CashAndCashEquivalentsAtCarryingValue | 24,194 us-gaap_CashAndCashEquivalentsAtCarryingValue | 25,189 us-gaap_CashAndCashEquivalentsAtCarryingValue
Cash and cash equivalents at end of year | $ 27,271 us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 32,146 us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 24,194 us-gaap_CashAndCashEquivalentsAtCarryingValue

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- Definition Amount of cash inflow (outflow) of investing activities, excluding discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3574-108585 + Details
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- Definition Amount of cash inflow (outflow) from operating activities, excluding discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3521-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585 + Details
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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Other Comprehensive Income -URI http://asc.fasb.org/extlink&oid=6519514 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Net Income -URI http://asc.fasb.org/extlink&oid=6518256 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.19) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.18) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.22) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 19 -Article 5 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 20 -Article 9 + Details
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- Definition Amount of cash outflow in the form of ordinary dividends to common shareholders of the parent entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 + Details
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- Definition Amount of cash outflow through purchase of long-term held-to-maturity securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26853-111562 + Details
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- Definition The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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- Definition The cash inflow associated with the maturity, prepayments and calls (requests for early payments) of debt securities designated as held-to-maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26853-111562 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585 + Details
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- Definition The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585 + Details
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- Definition The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
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- Definition The cash outflow for the obligation for a lease meeting the criteria for capitalization (with maturities exceeding one year or beyond the operating cycle of the entity, if longer). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 + Details
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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