Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Jun. 30, 2017	Jun. 30, 2016
Consolidated Balance Sheets [Abstract]
Billed receivables, allowance for doubtful accounts	$ 253	$ 269
Inventories, reserves	$ 1,918	$ 1,608
Preferred stock, par value	$ 0	$ 0
Preferred stock, authorized	1,000	1,000
Preferred stock, issued	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, authorized	19,000	19,000
Common stock, issued	9,438	9,370
Common stock, outstanding	9,438	9,370