CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 401,975	$ 292,341
Restricted cash	737	618
Short-term investments	187,408	193,320
Accounts receivable, net	83,319	68,154
Prepaid expenses and other current assets	11,548	10,881
Total current assets	684,987	565,314
Property and equipment, net	57,436	65,664
Capitalized software development costs, net	8,497	15,855
Deposits and other assets	5,695	2,072
Deferred tax assets, net	11,704	7,989
Total assets	768,319	656,894
Current liabilities:
Accounts payable and accrued expenses	36,628	31,840
Accrued compensation and employee benefits	43,323	40,067
Accrued restructuring costs	0	56
Deferred revenue and advance payments, net	105,535	100,695
Total current liabilities	185,486	172,658
Deferred revenue and advance payments, net	13,915	8,995
Other long-term liabilities	16,447	19,943
Deferred tax liabilities	294	17
Total liabilities	216,142	201,613
Commitments and Contingencies
Stockholders’ Equity
Preferred stock undesignated, $0.001 par value; 5,000 shares authorized; no shares issued or outstanding	0	0
Additional paid-in capital	543,974	534,651
Treasury stock, at cost; 6,405 shares	(475,184)	(475,184)
Accumulated other comprehensive loss	(10,743)	(7,408)
Retained earnings	494,112	403,204
Total stockholders’ equity	552,177	455,281
Total liabilities and stockholders’ equity	768,319	656,894
Class A
Stockholders’ Equity
Common stock	16	16
Total stockholders’ equity	16	16
Class B Convertible
Stockholders’ Equity
Common stock	2	2
Total stockholders’ equity	$ 2	$ 2