Consolidated Balance Sheets (unaudited) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 138,753	$ 128,313
Accounts receivable, net of allowance for doubtful accounts of $15,664 and $15,106, respectively	2,583,716	2,685,448
Inventories	253,297	185,650
Other current assets	177,927	177,039
Total current assets	3,153,693	3,176,450
Property and equipment, net of accumulated depreciation and amortization of $254,747 and $256,065, respectively	148,531	146,016
Goodwill	429,757	429,368
Intangible assets, net of accumulated amortization of $111,245 and $103,483, respectively	239,833	246,915
Other assets	282,793	311,983
Total assets	4,254,607	4,310,732
Current liabilities:
Accounts payable—trade	1,460,172	1,461,312
Accounts payable—inventory financing facilities	309,075	356,930
Accrued expenses and other current liabilities	404,995	408,117
Current portion of long-term debt	830	1,105
Total current liabilities	2,175,072	2,227,464
Long-term debt	416,401	437,581
Deferred income taxes	33,963	33,209
Other liabilities	246,005	270,049
Total liabilities	2,871,441	2,968,303
Commitments and contingencies
Stockholders’ equity:
Preferred stock, $0.01 par value, 3,000 shares authorized; no shares issued
Common stock, $0.01 par value, 100,000 shares authorized; 35,320 shares at March 31, 2021 and 35,103 shares at December 31, 2020 issued and outstanding	353	351
Additional paid-in capital	361,935	364,288
Retained earnings	1,036,413	993,245
Accumulated other comprehensive loss – foreign currency translation adjustments	(15,535)	(15,455)
Total stockholders’ equity	1,383,166	1,342,429
Total liabilities and stockholders' equity	$ 4,254,607	$ 4,310,732