Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Consolidated Statements of Income (Unaudited) [Abstract]
Net sales	$ 91,670,000	$ 70,840,000	$ 177,505,000	$ 133,815,000
Cost of goods sold	69,850,000	52,420,000	129,694,000	97,579,000
Gross profit	21,820,000	18,420,000	47,811,000	36,236,000
Operating expenses:
General and administrative	18,219,000	9,812,000	29,579,000	15,204,000
Sales and marketing	2,632,000	1,837,000	4,912,000	3,663,000
Research and development	646,000	539,000	1,382,000	1,061,000
Total operating expenses	21,497,000	12,188,000	35,873,000	19,928,000
Operating income	323,000	6,232,000	11,938,000	16,308,000
Interest expense, net	2,613,000	3,339,000	11,050,000	6,752,000
(Loss) income before income tax (benefit) expense	(2,290,000)	2,893,000	888,000	9,556,000
Income tax (benefit) expense	(898,000)	1,418,000	370,000	4,132,000
Net (loss) income	$ (1,392,000)	$ 1,475,000	$ 518,000	$ 5,424,000
Basic net (loss) income per share (in dollars per share)	$ (0.08)	$ 0.09	$ 0.03	$ 0.35
Diluted net (loss) income per share (in dollars per share)	$ (0.08)	$ 0.09	$ 0.03	$ 0.33
Weighted average number of shares outstanding:
Basic (in shares)	18,215,783	15,975,437	18,109,912	15,531,566
Diluted (in shares)	18,215,783	16,826,427	18,887,153	16,372,726