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Acquisition (Details) (USD $) | 9 Months Ended |
--- | --- | ---
Dec. 31, 2012 | Dec. 31, 2011 | May 06, 2011 Fapco [Member]
Business Acquisition [Line Items] |  |  |
Direct ownership interest acquired (in hundredths) |  |  | 1.00%
FAPL's ownership interest prior to acquisition (in hundredths) |  |  | 99.00%
Combined direct and indirect ownership interest subsequent to acquisition (in hundredths) |  |  | 100.00%
Pro forma financial information [Abstract] |  |  |
Net sales | $ 316,930,000 | $ 288,757,000 |
Operating income (loss) | 5,508,000 | (23,019,000) |
Loss before income tax expense | (11,627,000) | (32,377,000) |
Net loss | $ (17,860,000) | $ (38,215,000) |
Basic net loss per share (in dollars per share) | $ (1.25) | $ (3.08) |
Diluted net loss per share (in dollars per share) | $ (1.25) | $ (3.08) |

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