CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 166,507	$ 162,567
Short-term investments	547,580	0
Accounts receivable (net of allowances of $741 and $1,827 at September 30, 2015 and December 31, 2014, respectively)	93,531	43,938
Prepaid expenses and other current assets	16,680	6,015
Income tax receivable	22,849	6,797
Deferred income taxes	1,436	491
Total current assets	848,583	219,808
Noncurrent assets:
Property, equipment and capitalized software, net	60,757	50,962
Goodwill	136,507	62,269
Intangible assets, net	63,397	7,447
Other assets	4,136	2,083
Total assets	1,113,380	342,569
Current liabilities:
Accounts payable	18,758	10,974
Accrued compensation	38,750	15,305
Other current liabilities	9,619	1,992
Deferred revenue	4,566	3,904
Deferred rent	763	567
Credit facilities	15,000	18,750
Capital lease obligation	109	99
Total current liabilities	87,565	51,591
Noncurrent liabilities:
Credit facilities, less current portion	270,000	281,250
Capital lease obligation, less current portion	251	168
Deferred rent	2,657	2,619
Deferred income taxes	36,005	15,163
Total liabilities	$ 396,478	$ 350,791
Commitments and contingencies (Note 10)
Stockholders' equity (deficit):
Common stock
Preferred stock, $0.0001 par value, 100,000,000 shares authorized, zero shares issued and outstanding at September 30, 2015 and December 31, 2014, respectively
Additional paid in capital	$ 486,541	$ 110,317
Retained earnings	231,492	181,477
Treasury stock, at cost, zero shares at September 30, 2015 and 11,109,285 at December 31, 2014		(300,017)
Accumulated other comprehensive loss	(1,132)
Total stockholders' equity (deficit)	716,902	(8,222)
Total liabilities and stockholders' equity (deficit)	$ 1,113,380	$ 342,569
Common Class A
Stockholders' equity (deficit):
Common stock
Common Class B
Stockholders' equity (deficit):
Common stock	$ 1	$ 1