CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Assets
Cash and cash equivalents	$ 435,303	$ 25,791
Accounts receivable (less reserve for credit losses of $10,068 in 2012 and $11,526 in 2011)	1,630,699	1,323,915
Available-for-sale securities	16,223	17,044
Income taxes receivable		7,755
Fuel price derivatives, at fair value	428	410
Property, equipment and capitalized software (net of accumulated depreciation of $121,348 in 2012 and $109,133 in 2011)	65,741	62,078
Deferred income taxes, net	104,425	143,524
Goodwill	579,204	549,504
Other intangible assets, net	137,197	109,656
Other assets	93,213	38,383
Total assets	3,062,433	2,278,060
Liabilities and Stockholders' Equity
Accounts payable	586,941	409,226
Accrued expenses	50,010	54,738
Income taxes payable	9,434
Deposits	1,206,114	693,654
Borrowed federal funds		6,900
Fuel price derivatives, at fair value	2,274	415
Revolving line-of-credit facilities and term loan	300,000	295,300
Other liabilities	14,992	15,749
Amounts due under tax receivable agreement	86,518	92,763
Total liabilities	2,256,283	1,568,745
Commitments and contingencies (Note 14)
Redeemable noncontrolling interest (Note 11)	22,113
WEX Inc. Stockholders' Equity
Common stock $0.01 par value; 175,000 shares authorized, 42,488 in 2012 and 42,252 in 2011 shares issued; 38,810 in 2012 and 38,765 in 2011 shares outstanding	425	423
Additional paid-in capital	157,058	146,282
Retained earnings	701,258	633,389
Other comprehensive income (loss), net of tax:
Net unrealized gain on available-for-sale securities	314	200
Net unrealized loss on interest rate swaps		(60)
Net foreign currency translation adjustment	37,637	30,448
Accumulated other comprehensive income	37,951	30,588
Less treasury stock at cost, 3,766 shares in 2012 and 3,566 in 2011	(112,655)	(101,367)
Total equity	784,037	709,315
Total liabilities and stockholders' equity	$ 3,062,433	$ 2,278,060