Selected Quarterly Financial Data (Schedule Of Quarterly Financial Information) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Quarterly Financial Information Disclosure [Abstract]
Net Sales	$ 23,594	$ 21,397	$ 20,433	$ 19,269	$ 22,351	$ 16,325	$ 21,751	$ 17,520	$ 84,693	$ 77,947	$ 69,135
Gross Profit	9,021	7,922	7,407	7,650	8,561	5,190	9,444	4,574	32,000	27,769	21,139
Net Income (Loss)	$ 772	$ 1,020	$ 366	$ 1,558	$ 261	$ (598)	$ 2,524	$ (2,355)	$ 3,716	$ (168)	$ (22,113)
Net (Loss) Income Per Common Share
Basic	$ 0.08	$ 0.11	$ 0.04	$ 0.16	$ 0.03	$ (0.06)	$ 0.27	$ (0.25)	$ 0.39	$ (0.02)	$ (2.36)
Diluted	$ 0.08	$ 0.11	$ 0.04	$ 0.16	$ 0.03	$ (0.06)	$ 0.27	$ (0.25)	$ 0.39	$ (0.02)	$ (2.36)