Quarterly Results (unaudited) (Details) (USD $)	3 Months Ended								12 Months Ended
	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011
Sales	$ 17,921,000	$ 11,243,000	$ 14,410,000	$ 14,268,000	$ 15,457,000	$ 12,993,000	$ 14,588,000	$ 9,572,000	$ 57,842,000	$ 52,610,000	$ 38,858,000
Gross profit	8,358,000	5,569,000	6,401,000	6,598,000	7,318,000	5,988,000	6,772,000	4,660,000
Adjustment to contingent earnout liability	(500,000)	0	0	0	(4,500,000)	0	0	0	(500,000)	(4,500,000)	0
Net income (loss)	$ 1,914,000	$ 1,381,000	$ 1,701,000	$ 1,704,000	$ (2,269,000)	$ 1,585,000	$ 1,946,000	$ 720,000
Basic earnings (loss) per share (in dollars per share)	$ 0.22	$ 0.16	$ 0.20	$ 0.20	$ (0.26)	$ 0.18	$ 0.23	$ 0.08	$ 0.78	$ 0.23	$ 0.65
Diluted earnings (loss) per share (in dollars per share)	$ 0.22	$ 0.16	$ 0.20	$ 0.20	$ (0.26)	$ 0.18	$ 0.23	$ 0.08	$ 0.78	$ 0.23	$ 0.65
Dividends declared per common share	$ 0.07	$ 0.07	$ 0.57	$ 0.07	$ 0.05	$ 0.05	$ 1.00	$ 0	$ 0.78	$ 1.10