Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Current assets:
Cash	$ 57,408	$ 52,487
Short-term investments	5,064	5,012
Accounts receivable, net of allowance for doubtful accounts of $1,893 and $1,899 respectively	24,380	27,102
Prepaid taxes	3,211	1,017
Prepaid expenses and other current assets	1,706	1,813
Total current assets	91,769	87,431
Property and equipment, net	13,088	12,371
Goodwill	97,174	93,639
Intangible assets, net	3,369	710
Operating lease assets with right-of-use	24,779	26,385
Deferred tax assets	127	136
Other assets	901	936
Total assets	231,207	221,608
Current liabilities:
Accounts payable	1,624	2,036
Current operating lease liability	2,829	2,571
Current portion of term loan	1,706	1,241
Accrued expenses and other current liabilities	4,058	2,476
Accrued compensation expenses	1,298	3,679
Income taxes payable		65
Contract liabilities	6,701	4,335
Total current liabilities	18,216	16,403
Long-term portion of term loan	21,066	22,473
Non-current operating lease liability	26,047	28,170
Deferred tax liabilities	1,757	1,611
Other liabilities	1,865
Total liabilities	68,951	68,657
Leases and contingencies (see Note 9)
Stockholders’ equity:
Preferred stock, $0.001 par value; 5,000,000 shares authorized; no shares issued or outstanding
Common stock, $0.001 par value; 100,000,000 shares authorized; 55,608,094 and 54,903,824 shares issued, respectively; 28,098,707 and 28,142,519 shares outstanding, respectively	56	55
Treasury stock, at cost; 27,509,387 and 26,761,305 shares, respectively	(199,796)	(184,972)
Additional paid-in capital	327,899	317,675
Accumulated other comprehensive loss	(177)	(319)
Retained earnings	34,274	20,512
Total stockholders’ equity	162,256	152,951
Total liabilities and stockholders’ equity	$ 231,207	$ 221,608