CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenue:
Services	$ 21,973	$ 19,305	$ 16,128	$ 16,446	$ 15,344	$ 14,769	$ 13,744	$ 13,765	$ 73,852	$ 57,622	$ 37,248
Software and other	2,504	4,054	3,997	3,756	3,533	3,407	3,569	3,823	14,311	14,332	16,591
Total revenue	24,477	23,359	20,125	20,202	18,877	18,176	17,313	17,588	88,163	71,954	53,839
Costs of revenue:
Cost of services	14,014	11,046	8,838	9,310	8,648	8,815	9,591	10,291	43,208	37,343	29,919
Cost of software and other	300	294	271	307	278	312	361	470	1,172	1,421	1,744
Total cost of revenue	14,314	11,340	9,109	9,617	8,926	9,127	9,952	10,761	44,380	38,764	31,663
Gross profit	10,163	12,019	11,016	10,585	9,951	9,049	7,361	6,827	43,783	33,190	22,176
Operating expenses:
Research and development	1,410	1,456	1,281	1,588	1,652	1,643	1,708	1,770	5,735	6,773	6,057
Sales and marketing	2,167	4,120	4,376	3,936	3,377	3,789	4,989	6,130	14,599	18,285	21,791
General and administrative	3,183	3,077	2,353	2,763	3,572	2,897	2,850	2,914	11,376	12,234	12,005
Amortization of intangible assets and other	316	335	335	335	368	397	391	367	1,321	1,522	866
Total operating expenses	7,076	8,988	8,345	8,622	8,969	8,726	9,938	11,181	33,031	38,814	40,719
Income (loss) from operations	3,087	3,031	2,671	1,963	982	323	(2,577)	(4,354)	10,752	(5,624)	(18,543)
Interest income and other, net	62	127	107	73	71	93	59	75	369	297	455
Income (loss) from continuing operations, before income taxes	3,149	3,158	2,778	2,036	1,053	416	(2,518)	(4,279)	11,121	(5,327)	(18,088)
Income tax provision	326	121	176	149	(145)	118	116	118	772	208	401
Income (loss) from continuing operations, after income taxes	2,823	3,037	2,602	1,887	1,198	298	(2,634)	(4,397)	10,349	(5,535)	(18,489)
Income (loss) from discontinued operations, after income taxes	50	(5)	(6)	(5)	101	(7)	(7)	24	34	111	(151)
Net income (loss)	$ 2,873	$ 3,032	$ 2,596	$ 1,882	$ 1,299	$ 291	$ (2,641)	$ (4,373)	$ 10,383	$ (5,424)	$ (18,640)
Basic earnings (loss) per share:
Continuing operations, after income taxes	$ 0.05	$ 0.06	$ 0.05	$ 0.04					$ 0.20	$ (0.11)	$ (0.39)
Discontinued operations, after income taxes	$ 0	$ 0	$ 0	$ 0					$ 0	$ 0	$ 0
Basic net earnings (loss) per share (in dollars per share)	$ 0.05	$ 0.06	$ 0.05	$ 0.04	$ 0.03	$ 0.01	$ (0.05)	$ (0.09)	$ 0.20	$ (0.11)	$ (0.39)
Diluted earnings (loss) per share:
Continuing operations, after income taxes (in dollars per share)	$ 0.05	$ 0.06	$ 0.05	$ 0.04					$ 0.19	$ (0.11)	$ (0.39)
Discontinued operations, after income taxes (in dollars per share)	$ 0	$ 0	$ 0	$ 0					$ 0	$ 0	$ 0
Diluted net earnings (loss) per share (in dollars per share)	$ 0.05	$ 0.06	$ 0.05	$ 0.04	$ 0.02	$ 0.01	$ (0.05)	$ (0.09)	$ 0.19	$ (0.11)	$ (0.39)
Shares used in computing per share amounts:
Shares used in computing basic net earnings (loss) per share (in shares)									51,553	48,798	48,288
Shares used in computing diluted net earnings (loss) per share (in shares)									53,825	48,798	48,288