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v2.4.1.9

Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified | 12 Months Ended
--- | ---
Mar. 31, 2015 | Mar. 31, 2014 | Mar. 31, 2013
Income Statement [Abstract] |  |  |
Net sales | $ 135,169 us-gaap_SalesRevenueNet | $ 102,218 us-gaap_SalesRevenueNet | $ 104,973 us-gaap_SalesRevenueNet
Cost of products sold | 93,365 us-gaap_CostOfGoodsSold | 70,406 us-gaap_CostOfGoodsSold | 73,151 us-gaap_CostOfGoodsSold
Gross profit | 41,804 us-gaap_GrossProfit | 31,812 us-gaap_GrossProfit | 31,822 us-gaap_GrossProfit
Other expenses and income: |  |  |
Selling, general and administrative | 18,283 us-gaap_SellingGeneralAndAdministrativeExpense | 16,973 us-gaap_SellingGeneralAndAdministrativeExpense | 16,332 us-gaap_SellingGeneralAndAdministrativeExpense
Selling, general and administrative - amortization | 229 us-gaap_AmortizationOfIntangibleAssets | 222 us-gaap_AmortizationOfIntangibleAssets | 228 us-gaap_AmortizationOfIntangibleAssets
Restructuring charge | 1,718 us-gaap_RestructuringAndRelatedCostIncurredCost |  |
Interest income | (189)us-gaap_InvestmentIncomeInterest | (94)us-gaap_InvestmentIncomeInterest | (51)us-gaap_InvestmentIncomeInterest
Interest expense | 11 us-gaap_InterestIncomeExpenseNonoperatingNet | 1 us-gaap_InterestIncomeExpenseNonoperatingNet | (264)us-gaap_InterestIncomeExpenseNonoperatingNet
Total other expenses and income | 20,052 ghm_OtherExpensesAndIncome | 17,102 ghm_OtherExpensesAndIncome | 16,245 ghm_OtherExpensesAndIncome
Income before provision for income taxes | 21,752 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | 14,710 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | 15,577 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Provision for income taxes | 7,017 us-gaap_IncomeTaxExpenseBenefit | 4,565 us-gaap_IncomeTaxExpenseBenefit | 4,429 us-gaap_IncomeTaxExpenseBenefit
Net income | $ 14,735 us-gaap_NetIncomeLoss | $ 10,145 us-gaap_NetIncomeLoss | $ 11,148 us-gaap_NetIncomeLoss
Basic: |  |  |
Net income | $ 1.46 us-gaap_EarningsPerShareBasic | $ 1.01 us-gaap_EarningsPerShareBasic | $ 1.11 us-gaap_EarningsPerShareBasic
Diluted: |  |  |
Net income | $ 1.45 us-gaap_EarningsPerShareDiluted | $ 1.00 us-gaap_EarningsPerShareDiluted | $ 1.11 us-gaap_EarningsPerShareDiluted
Average common shares outstanding: |  |  |
Basic | 10,123 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 10,070 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 10,027 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Diluted | 10,143 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 10,104 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 10,051 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Dividends declared per share | $ 0.20 us-gaap_CommonStockDividendsPerShareDeclared | $ 0.13 us-gaap_CommonStockDividendsPerShareDeclared | $ 0.09 us-gaap_CommonStockDividendsPerShareDeclared

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