Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 224,613	$ 283,649
Restricted cash	49,347	53,674
Accounts receivable (less allowance for doubtful accounts of $19,576 and $19,463, respectively)	626,464	525,441
Securitized accounts receivable-restricted for securitization investors	385,000	298,000
Prepaid expenses and other current assets	24,932	28,126
Deferred income taxes	7,710	6,464
Total current assets	1,318,066	1,195,354
Property and equipment	97,104	93,902
Less accumulated depreciation and amortization	(51,212)	(48,706)
Net property and equipment	45,892	45,196
Goodwill	973,335	926,609
Other intangibles, net	502,103	463,864
Other assets	50,988	90,847
Total assets	2,890,384	2,721,870
Current liabilities:
Accounts payable	501,036	418,609
Accrued expenses	61,383	75,812
Customer deposits	170,035	187,627
Securitization facility	385,000	298,000
Current portion of notes payable and other obligations	122,375	162,174
Total current liabilities	1,239,829	1,142,222
Notes payable and other obligations, less current portion	491,988	485,217
Deferred income taxes	175,554	180,609
Total noncurrent liabilities	667,542	665,826
Commitments and contingencies (Note 11)
Stockholders' equity:
Common stock, $0.001 par value; 475,000,000 shares authorized, 117,080,997 shares issued and 81,346,505 shares outstanding at March 31, 2013; and 475,000,000 shares authorized, 116,772,324 shares issued and 81,037,832 shares outstanding at December 31, 2012	116	116
Additional paid-in capital	557,279	542,018
Retained earnings	815,359	750,697
Accumulated other comprehensive loss	(14,078)	(3,346)
Less treasury stock (35,734,492 shares at March 31, 2013 and December 31, 2012)	(375,663)	(375,663)
Total stockholders' equity	983,013	913,822
Total liabilities and stockholders' equity	$ 2,890,384	$ 2,721,870