CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 139,948	$ 50,015
Short-term marketable securities	36,005	15,793
Accounts receivable, net of allowance of $1,988 and $2,422, respectively	15,309	13,806
Prepaid expenses and other current assets	3,564	3,103
Total current assets	194,826	82,717
Property and equipment, net	7,441	7,479
Goodwill	188,184	188,184
Intangible assets, net	23,078	24,875
Other assets	424	415
Total assets	413,953	303,670
Current liabilities:
Accounts payable	1,949	2,236
Accrued expenses and other current liabilities	8,947	7,981
Accrued compensation	7,242	8,856
Subordinated promissory note		2,000
Total current liabilities	18,138	21,073
Other liabilities	8,104	7,609
Deferred taxes	1,844	1,694
Long term bank and other debt, net	42,434	42,424
Commitments and contingencies
Stockholders' equity:
Common stock, $0.001 par value; 75,000,000 shares authorized as of March 31, 2017 and December 31, 2016; 54,359,434 shares and 46,201,563 shares issued and outstanding as of March 31, 2017 and December 31, 2016, respectively	54	46
Additional paid-in capital	563,832	435,551
Accumulated deficit	(220,449)	(204,726)
Accumulated other comprehensive loss	(4)	(1)
Total stockholders' equity	343,433	230,870
Total liabilities and stockholders' equity	$ 413,953	$ 303,670