Consolidated Statements of Operations and Comprehensive Loss - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Revenue:
Professional engineering service	$ 10,410	$ 15,271
Total revenue	80,811	97,441
Cost of revenue:
Professional engineering service	7,365	13,439
Total cost of revenue	62,689	81,621
Gross profit	18,122	15,820
Operating expenses:
Selling, general and administrative	20,982	14,119
Research and development	6,561	2,859
Total operating expenses	27,543	16,978
Loss from operations	(9,421)	(1,158)
Other income, net	214	247
Loss before income taxes	(9,207)	(911)
Income tax benefit (expense)	149	(141)
Net loss	$ (9,058)	$ (1,052)
Basic loss per share	$ (0.72)	$ (0.09)
Diluted loss per share	$ (0.72)	$ (0.09)
Shares used in per share calculations:
Basic	12,594	12,260
Diluted	12,594	12,260
Comprehensive loss:
Net loss	$ (9,058)	$ (1,052)
Other comprehensive income (loss):
Foreign currency translation, net of tax	25	(79)
Unrealized gain on investments, net of tax		7
Total other comprehensive income (loss)	25	(72)
Comprehensive loss	(9,033)	(1,124)
Third Party Software [Member]
Revenue:
Software	65,755	80,231
Cost of revenue:
Software	55,161	67,853
Proprietary Software [Member]
Revenue:
Software	4,646	1,939
Cost of revenue:
Software	$ 163	$ 329