Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Allowances for doubtful accounts	$ 10	$ 20
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	42,000,000	42,000,000
Common stock, shares issued	30,124,494	28,127,511
Treasury stock, shares	801,920	801,920