CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Current assets
Cash and cash equivalents	$ 94,369	$ 102,239
Receivables, net of allowances of $4,335 and $5,045, respectively	170,004	219,116
Recoverable income taxes	2,808	12,048
Prepaid expenses	27,487	27,461
Other current assets	18,246	21,637
Total current assets	312,914	382,501
Noncurrent assets
Property and equipment, net	59,974	60,630
Software, net	208,837	237,941
Goodwill	917,470	913,261
Intangible assets, net	226,285	256,925
Deferred income taxes, net	71,889	90,872
Other noncurrent assets	36,973	33,658
TOTAL ASSETS	1,834,342	1,975,788
Current liabilities
Accounts payable	38,605	55,420
Employee compensation	33,615	31,213
Current portion of long-term debt	90,055	89,710
Deferred revenue	123,411	128,559
Income taxes payable	12,666	4,734
Other current liabilities	65,458	75,225
Total current liabilities	363,810	384,861
Noncurrent liabilities
Deferred revenue	41,395	42,081
Long-term debt	668,859	834,449
Deferred income taxes, net	26,437	28,067
Other noncurrent liabilities	29,669	31,930
Total liabilities	$ 1,130,170	$ 1,321,388
Commitments and contingencies (Note 14)
Stockholders' equity
Preferred stock; $0.01 par value; 5,000,000 shares authorized; no shares issued at March 31, 2016 and December 31, 2015
Common stock; $0.005 par value; 280,000,000 shares authorized; 140,525,055 shares issued at March 31, 2016 and December 31, 2015	$ 702	$ 702
Additional paid-in capital	565,940	561,379
Retained earnings	506,335	416,851
Treasury stock, at cost, 23,823,009 and 21,491,285 shares at March 31, 2016 and December 31, 2015, respectively	(303,344)	(252,956)
Accumulated other comprehensive loss	(65,461)	(71,576)
Total stockholders' equity	704,172	654,400
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 1,834,342	$ 1,975,788