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Income Taxes (Details) (USD $) | 12 Months Ended
--- | ---
Mar. 31, 2013 | Mar. 31, 2012 | Mar. 31, 2011
Income Taxes |  |  |
Material uncertain tax positions | $ 0 | $ 0 |
Income tax refunds | 258,000 |  |
Current tax provision |  |  |
Federal | 4,440,000 | 4,233,000 | 3,291,000
State | 280,000 | 437,000 | 691,000
Total | 4,720,000 | 4,670,000 | 3,982,000
Deferred tax provision: |  |  |
Federal | (180,000) | (237,000) | (342,000)
State | (12,000) | (21,000) | (72,000)
Total | (192,000) | (258,000) | (414,000)
Total | 4,528,000 | 4,412,000 | 3,568,000
Current deferred tax assets: |  |  |
Accrued employee-related expenses | 125,000 | 211,000 |
Asset reserves | 226,000 | 196,000 |
Stock option deductible differences | 243,000 | 99,000 |
Inventory | 252,000 | 204,000 |
Current deferred tax assets | 846,000 | 710,000 |
Long-term deferred tax liability: |  |  |
Property, plant and equipment | (1,320,000) | (1,299,000) |
Goodwill and intangible assets | (1,044,000) | (1,220,000) |
Long-term deferred tax liability | (2,364,000) | (2,519,000) |
Net deferred tax liability | (1,518,000) | (1,809,000) |
Reconciliation of our income tax provision and the amounts computed by applying statutory rates to income before income taxes |  |  |
Income taxes at statutory rates | 4,543,000 | 4,193,000 | 3,313,000
State income taxes, net of federal benefit | 158,000 | 285,000 | 272,000
Tax benefit of stock option exercises | 197,000 | 61,000 | 90,000
Section 199 manufacturing deduction | (357,000) | (347,000) | (273,000)
Other | (13,000) | 220,000 | 166,000
Total | $ 4,528,000 | $ 4,412,000 | $ 3,568,000

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