Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Current assets:
Cash	$ 50,390	$ 52,487
Short-term investments	5,023	5,012
Accounts receivable, net of allowance for doubtful accounts of $2,028 and $1,899 respectively	25,568	27,102
Prepaid taxes		1,017
Prepaid expenses and other current assets	1,830	1,813
Total current assets	82,811	87,431
Property and equipment, net	12,951	12,371
Goodwill	97,023	93,639
Intangible assets, net	3,471	710
Operating lease assets with right-of-use	25,485	26,385
Deferred tax assets	616	136
Other assets	903	936
Total assets	223,260	221,608
Current liabilities:
Accounts payable	1,847	2,036
Current operating lease liability	2,769	2,571
Current portion of term loan	1,554	1,241
Accrued expenses and other current liabilities	3,737	2,476
Accrued compensation expenses	1,164	3,679
Income taxes payable	3,217	65
Contract liabilities	5,051	4,335
Total current liabilities	19,339	16,403
Long-term portion of term loan	21,540	22,473
Non-current operating lease liability	26,845	28,170
Deferred tax liabilities	850	1,611
Other liabilities	1,140
Total liabilities	69,714	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; 55,035,081 and 54,903,824 shares issued, respectively; 27,536,786 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	326,194	317,675
Accumulated other comprehensive loss	(399)	(319)
Retained earnings	27,492	20,512
Total stockholders’ equity	153,546	152,951
Total liabilities and stockholders’ equity	$ 223,260	$ 221,608