Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Consolidated Statements of Operations [Abstract]
Net sales	$ 106,568	$ 120,476	$ 210,584	$ 219,268
Cost of sales (exclusive of depreciation)	93,973	103,216	184,202	187,531
Gross profit	12,595	17,260	26,382	31,737
Operating expenses:
Selling and marketing	5,005	5,277	10,048	10,161
Distribution and warehousing	2,495	2,686	4,938	5,158
General and administrative	5,753	5,149	11,677	10,223
Depreciation and amortization	927	991	1,899	1,882
Total operating expenses	14,180	14,103	28,562	27,424
(Loss) income from operations	(1,585)	3,157	(2,180)	4,313
Other income (expense):
Interest (expense) income, net	(288)	(456)	(581)	(851)
Other income (expense), net	(255)	(172)	(330)	(431)
(Loss) income from continuing operations before income tax	(2,128)	2,529	(3,091)	3,031
Income tax benefit (expense)	879	(1,072)	1,215	(1,371)
Net (loss) income from continuing operations	(1,249)	1,457	(1,876)	1,660
Discontinued operations:
Income from discontinued operations, net of tax		1,680		2,575
Net (loss) income	$ (1,249)	$ 3,137	$ (1,876)	$ 4,235
Basic (loss) earnings per common share:
Continued operations	$ (0.03)	$ 0.04	$ (0.05)	$ 0.05
Discontinued operations		$ 0.05		$ 0.07
Net (loss) income	$ (0.03)	$ 0.09	$ (0.05)	$ 0.12
Diluted (loss) earnings per common share:
Continued operations	$ (0.03)	$ 0.04	$ (0.05)	$ 0.04
Discontinued operations		$ 0.05		$ 0.07
Net (loss) income	$ (0.03)	$ 0.09	$ (0.05)	$ 0.11
Weighted average shares outstanding:
Basic	36,831	36,376	36,719	36,371
Diluted	36,831	36,995	36,719	36,886