Condensed Consolidated Balance Sheets (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 20,232	$ 34,157
Short-term investments	7,431	0
Accounts receivable, net of allowance for doubtful accounts of $156 at September 30, 2011 and $197 at December 31, 2010	8,007	6,577
Prepaid expenses and other current assets	1,669	1,183
Total current assets	37,339	41,917
Property and equipment, net	2,121	2,550
Intangible assets, net	2,374	517
Goodwill	4,016	762
Other assets	148	229
Total assets	45,998	45,975
Current liabilities:
Accounts payable	803	1,067
Accrued expenses	3,742	3,297
Total current liabilities	4,545	4,364
Other liabilities	1,260	421
Total liabilities	5,805	4,785
Commitments and contingencies (note 5)
Stockholders' equity:
Common stock, $0.001 par value - 75,000,000 shares authorized; 16,656,731 and 16,576,701 shares issued at September 30, 2011 and December 31, 2010, respectively; 16,448,752 and 16,381,316 shares outstanding at September 30, 2011 and December 31, 2010, respectively	17	17
Additional paid-in capital	70,386	69,454
Treasury stock, at cost --207,979 shares at September 30, 2011 and 195,385 shares at December 31, 2010	(163)	(132)
Accumulated other comprehensive loss	(72)	(72)
Accumulated deficit	(29,975)	(28,077)
Total stockholders' equity	40,193	41,190
Total liabilities and stockholders' equity	$ 45,998	$ 45,975