CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenue:
Services	$ 20,633	$ 20,844	$ 18,743	$ 17,052	$ 22,258	$ 19,585	$ 16,400	$ 16,624	$ 77,272	$ 74,867	$ 57,622
Software and other	1,336	1,387	1,435	1,561	2,219	3,774	3,725	3,578	5,719	13,296	14,332
Total revenue	21,969	22,231	20,178	18,613	24,477	23,359	20,125	20,202	82,991	88,163	71,954
Costs of revenue:
Cost of services	17,093	16,020	14,531	12,962	14,014	11,046	8,838	9,310	60,606	43,208	37,343
Cost of software and other	184	189	228	239	300	294	271	307	840	1,172	1,421
Total cost of revenue	17,277	16,209	14,759	13,201	14,314	11,340	9,109	9,617	61,446	44,380	38,764
Gross profit	4,692	6,022	5,419	5,412	10,163	12,019	11,016	10,585	21,545	43,783	33,190
Operating expenses:
Research and development	1,464	1,203	1,057	1,354	1,410	1,456	1,281	1,588	5,078	5,735	6,773
Sales and marketing	2,185	1,782	1,688	1,551	2,167	4,120	4,376	3,936	7,206	14,599	18,285
General and administrative	2,869	2,808	2,980	2,663	3,183	3,077	2,353	2,763	11,320	11,376	12,234
Amortization of intangible assets and other	272	273	273	273	316	335	335	335	1,091	1,321	1,522
Total operating expenses	6,790	6,066	5,998	5,841	7,076	8,988	8,345	8,622	24,695	33,031	38,814
Income (loss) from operations	(2,098)	(44)	(579)	(429)	3,087	3,031	2,671	1,963	(3,150)	10,752	(5,624)
Interest income and other, net	77	77	62	78	62	127	107	73	294	369	297
Income (loss) from continuing operations, before income taxes	(2,021)	33	(517)	(351)	3,149	3,158	2,778	2,036	(2,856)	11,121	(5,327)
Income tax provision	355	128	132	125	326	121	176	149	740	772	208
Income (loss) from continuing operations, after income taxes	(2,376)	(95)	(649)	(476)	2,823	3,037	2,602	1,887	(3,596)	10,349	(5,535)
Income (loss) from discontinued operations, after income taxes	131	(6)	(6)	(6)	50	(5)	(6)	(5)	113	34	111
Net income (loss)	$ (2,245)	$ (101)	$ (655)	$ (482)	$ 2,873	$ 3,032	$ 2,596	$ 1,882	$ (3,483)	$ 10,383	$ (5,424)
Basic earnings (loss) per share:
Continuing operations, after income taxes	$ (0.04)	$ 0	$ (0.01)	$ (0.01)	$ 0.05	$ 0.06	$ 0.05	$ 0.04	$ (0.07)	$ 0.20	$ (0.11)
Discontinued operations, after income taxes	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0.01	$ 0	$ 0
Basic net earnings (loss) per share (in dollars per share)	$ (0.04)	$ 0	$ (0.01)	$ (0.01)	$ 0.05	$ 0.06	$ 0.05	$ 0.04	$ (0.06)	$ 0.20	$ (0.11)
Diluted earnings (loss) per share:
Continuing operations, after income taxes (in dollars per share)	$ (0.04)	$ 0	$ (0.01)	$ (0.01)	$ 0.05	$ 0.06	$ 0.05	$ 0.04	$ (0.07)	$ 0.19	$ (0.11)
Discontinued operations, after income taxes (in dollars per share)	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0.01	$ 0	$ 0
Diluted net earnings (loss) per share (in dollars per share)	$ (0.04)	$ 0	$ (0.01)	$ (0.01)	$ 0.05	$ 0.06	$ 0.05	$ 0.04	$ (0.06)	$ 0.19	$ (0.11)
Shares used in computing per share amounts:
Shares used in computing basic net earnings (loss) per share (in shares)									53,834	51,553	48,798
Shares used in computing diluted net earnings (loss) per share (in shares)									53,834	53,825	48,798