Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash	$ 40,279	$ 52,487
Short-term investments	4,887	5,012
Accounts receivable, net of allowance for doubtful accounts of $2,031 and $1,899 respectively	23,554	27,102
Prepaid taxes		1,017
Prepaid expenses and other current assets	2,563	1,813
Total current assets	71,283	87,431
Property and equipment, net	12,639	12,371
Goodwill	96,992	93,639
Intangible assets, net	3,590	710
Operating lease assets with right-of-use	25,843	26,385
Deferred tax assets	244	136
Other assets	899	936
Total assets	211,490	221,608
Current liabilities:
Accounts payable	1,691	2,036
Current operating lease liability	2,652	2,571
Current portion of term loan	1,397	1,241
Accrued expenses and other current liabilities	3,956	2,476
Accrued compensation expenses	846	3,679
Income taxes payable	264	65
Contract liabilities	4,548	4,335
Total current liabilities	15,354	16,403
Long-term liabilities:
Long-term portion of term loan	22,007	22,473
Non-current operating lease liability	27,419	28,170
Deferred tax liabilities	1,335	1,611
Total liabilities	66,115	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; 55,027,081 and 54,903,824 shares issued, respectively; 27,528,786 and 28,142,519 shares outstanding, respectively	55	55
Treasury stock, at cost; 27,498,295 and 26,761,305 shares, respectively	(199,796)	(184,972)
Additional paid-in capital	322,901	317,675
Accumulated other comprehensive loss	(504)	(319)
Retained earnings	22,719	20,512
Total stockholders’ equity	145,375	152,951
Total liabilities and stockholders’ equity	$ 211,490	$ 221,608