Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenue:
Total revenue	$ 14,180	$ 19,203	$ 29,276	$ 39,881
Cost of revenue:
Total cost of revenue	11,757	15,942	24,462	31,420
Gross profit	2,423	3,261	4,814	8,461
Operating expenses:
Selling, general and administrative	3,082	4,901	6,016	10,349
Research and development	1,894	2,078	4,230	4,308
Restructuring costs	1,376		1,376
Total operating expenses	6,352	6,979	11,622	14,657
Loss from operations	(3,929)	(3,718)	(6,808)	(6,196)
Other income, net	61	47	94	91
Loss before income taxes	(3,868)	(3,671)	(6,714)	(6,105)
Income tax benefit (expense)		(12)		(12)
Net loss	$ (3,868)	$ (3,683)	$ (6,714)	$ (6,117)
Basic loss per share	$ (0.30)	$ (0.29)	$ (0.52)	$ (0.48)
Diluted loss per share	$ (0.30)	$ (0.29)	$ (0.52)	$ (0.48)
Shares used in per share calculations:
Basic	12,855	12,697	12,879	12,685
Diluted	12,855	12,697	12,879	12,685
Net loss	$ (3,868)	$ (3,683)	$ (6,714)	$ (6,117)
Other comprehensive income (loss)
Foreign currency translation, net of tax	(82)	21	(80)	10
Unrealized gain (loss) on investments, net of tax	(2)	(8)	6	2
Total other comprehensive income (loss)	(84)	13	(74)	12
Comprehensive loss	(3,952)	(3,670)	(6,788)	(6,105)
Third Party Software [Member]
Revenue:
Total revenue	11,684	16,992	24,785	33,056
Cost of revenue:
Total cost of revenue	9,923	14,480	21,072	27,834
Gross profit	1,761	2,512	3,713	5,222
Proprietary Software [Member]
Revenue:
Total revenue	258	281	509	2,076
Cost of revenue:
Total cost of revenue	86	100	299	141
Gross profit	172	181	210	1,935
Professional Engineering Service [Member]
Revenue:
Total revenue	2,238	1,930	3,982	4,749
Cost of revenue:
Total cost of revenue	1,748	1,362	3,091	3,445
Gross profit	$ 490	$ 568	$ 891	$ 1,304