Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 493,085	$ 447,152
Restricted cash	156,014	167,492
Accounts receivable (less allowance for doubtful accounts of $25,236 and $21,903, at June 30, 2016 and December 31, 2015, respectively)	908,385	638,954
Securitized accounts receivable—restricted for securitization investors	713,000	614,000
Prepaid expenses and other current assets	73,355	68,113
Deferred income taxes	7,106	8,913
Total current assets	2,350,945	1,944,624
Property and equipment	189,665	163,569
Less accumulated depreciation and amortization	(99,242)	(82,809)
Net property and equipment	90,423	80,760
Goodwill	3,557,446	3,546,034
Other intangibles, net	2,112,238	2,183,595
Equity method investment	90,803	76,568
Other assets	66,853	58,225
Total assets	8,268,708	7,889,806
Current liabilities:
Accounts payable	904,151	669,528
Accrued expenses	160,566	150,677
Customer deposits	503,112	507,233
Securitization facility	713,000	614,000
Current portion of notes payable and lines of credit	111,158	261,100
Other current liabilities	40,303	44,936
Total current liabilities	2,432,290	2,247,474
Notes payable and other obligations, less current portion	2,007,918	2,059,900
Deferred income taxes	705,130	713,428
Other noncurrent liabilities	40,665	38,957
Total noncurrent liabilities	2,753,713	2,812,285
Commitments and contingencies
Stockholders’ equity:
Common stock, $0.001 par value; 475,000,000 shares authorized; 120,911,444 shares issued and 92,556,276 shares outstanding at June 30, 2016; and 120,539,041 shares issued and 92,376,335 shares outstanding at December 31, 2015	121	121
Additional paid-in capital	2,032,687	1,988,917
Retained earnings	1,990,492	1,766,336
Accumulated other comprehensive loss	(559,741)	(570,811)
Less treasury stock, 28,355,168 and 28,162,706 shares at June 30, 2016 and December 31, 2015, respectively	(380,854)	(354,516)
Total stockholders’ equity	3,082,705	2,830,047
Total liabilities and stockholders’ equity	$ 8,268,708	$ 7,889,806