CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 409,224	$ 50,015
Short-term marketable securities	31,070	15,793
Accounts receivable, net of allowance of $2,010 and $2,422, respectively	14,229	13,806
Prepaid expenses and other current assets	2,468	3,103
Total current assets	456,991	82,717
Property and equipment, net	7,424	7,479
Goodwill	188,184	188,184
Intangible assets, net	21,239	24,875
Other assets	308	415
Total assets	674,146	303,670
Current liabilities:
Accounts payable	1,150	2,236
Accrued expenses and other current liabilities	9,684	7,981
Accrued compensation	8,853	8,856
Subordinated promissory note		2,000
Total current liabilities	19,687	21,073
Other liabilities	9,254	7,609
Deferred taxes	1,994	1,694
Long term bank and other debt, net	42,440	42,424
Convertible senior notes, net	201,395
Commitments and contingencies
Stockholders' equity:
Common stock, $0.001 par value; 100,000,000 shares and 75,000,000 shares authorized as of June 30, 2017 and December 31, 2016, respectively; 54,798,273 shares and 46,201,563 shares issued and outstanding as of June 30, 2017 and December 31, 2016, respectively	55	46
Additional paid-in capital	635,186	435,551
Accumulated deficit	(235,864)	(204,726)
Accumulated other comprehensive loss	(1)	(1)
Total stockholders' equity	399,376	230,870
Total liabilities and stockholders' equity	$ 674,146	$ 303,670