Details of Certain Balance Sheet Accounts (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Receivables, net [Abstract]
Trade accounts	$ 18,455	$ 16,451
Vendor programs	59,228	57,304
Other, net	4,437	1,920
Total receivables	82,120	75,675
Less allowance for doubtful accounts	(5,472)	(6,182)
Receivables, net	76,648	69,493
Prepaid expenses and other current assets [Abstract]
Prepaid expenses	14,568	15,114
Other current assets	1,604	3,392
Prepaid expenses and other current assets	16,172	18,506
Property and equipment, net [Abstract]
Land	3,608	3,193
Buildings	7,132	5,318
Leasehold improvements	50,165	45,098
Autos and trucks	89,052	82,216
Machinery and equipment	69,027	61,945
Computer equipment	43,001	39,307
Furniture and fixtures	9,886	9,778
Fixed assets in progress	1,761	1,751
Total property and equipment	273,632	248,606
Less accumulated depreciation	(161,386)	(141,642)
Property and equipment, net	112,246	106,964
Accrued expenses and other current liabilities [Abstract]
Salaries and payroll deductions	13,688	12,475
Performance-based compensation	22,907	25,261
Taxes payable	9,814	8,337
Other current liabilities	14,404	12,534
Accrued expenses and other current liabilities	$ 60,813	$ 58,607