Consolidated Statements of Income (Unaudited) (USD $)	3 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Consolidated Statements of Income (Unaudited) [Abstract]
Net sales	$ 71,262,000	$ 36,234,000
Cost of goods sold	58,136,000	24,689,000
Gross profit	13,126,000	11,545,000
Operating expenses:
General and administrative	8,510,000	4,024,000
Sales and marketing	2,398,000	1,740,000
Research and development	416,000	366,000
Acquisition costs	404,000	0
Total operating expenses	11,728,000	6,130,000
Operating income	1,398,000	5,415,000
Other expense:
Interest expense	1,932,000	1,602,000
(Loss) income before income tax expense	(534,000)	3,813,000
Income tax expense	1,842,000	1,293,000
Net (loss) income	$ (2,376,000)	$ 2,520,000
Basic net (loss) income per share	$ (0.19)	$ 0.21
Diluted net (loss) income per share	$ (0.19)	$ 0.21
Weighted average number of shares outstanding:
Basic	12,281,530	12,049,057
Diluted	12,281,530	12,204,319