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Income Taxes - Summary of Net Deferred Income Tax Liability (Detail) - USD ($) $ in Thousands | Mar. 31, 2016 | Mar. 31, 2015
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Components Of Deferred Tax Assets And Liabilities [Abstract] |  |
Depreciation | $ (2,352) | $ (2,196)
Accrued compensation | 247 | 881
Prepaid pension asset | 355 | (465)
Accrued pension liability | 138 | 121
Accrued postretirement benefits | 309 | 342
Compensated absences | 571 | 629
Inventories | 905 | (1,042)
Warranty liability | 242 | 231
Accrued expenses | 702 | 313
Stock-based compensation | 485 | 500
Intangible assets | (5,159) | (5,230)
New York State investment tax credit | 985 | 952
Other | 11 | 40
Deferred Tax Liabilities, gross | (2,561) | (4,924)
Less: Valuation allowance | (985) | (952)
Total | $ (3,546) | $ (5,876)

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