Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Condensed Consolidated Balance Sheets [Abstract]
Allowance for doubtful accounts receivable	$ 786	$ 970
Allowance for doubtful unbilled work-in-progress	$ 536	$ 107
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	2,000,000	2,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	40,000,000	40,000,000
Common stock, shares issued	12,295,903	12,119,961
Common stock, shares outstanding	12,117,014	11,941,072
Treasury stock, shares	178,889	178,889