Details of Certain Balance Sheet Accounts (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Receivables, net [Abstract]
Trade accounts	$ 18,533	$ 17,835
Vendor programs	44,842	38,444
Other, net	2,112	2,099
Total receivables	65,487	58,378
Less allowance for doubtful accounts	(4,050)	(4,205)
Receivables, net	61,437	54,173
Prepaid expenses and other current assets [Abstract]
Prepaid expenses	13,584	11,919
Other current assets	1,734	27
Prepaid expenses and other current assets	15,318	11,946
Property and equipment, net [Abstract]
Land	1,685	1,925
Buildings	2,465	2,465
Leasehold improvements	38,348	33,518
Autos and trucks	53,371	35,832
Machinery and equipment	45,535	39,518
Computer equipment	39,251	39,271
Furniture and fixtures	9,951	9,164
Fixed assets in progress	2,065	6,173
Total property and equipment	192,671	167,866
Less accumulated depreciation	(109,381)	(98,012)
Property and equipment, net	83,290	69,854
Accrued expenses and other current liabilities [Abstract]
Salaries and payroll deductions	8,878	6,433
Performance-based compensation	32,226	29,090
Taxes payable	8,424	8,889
Other current liabilities	14,859	12,179
Accrued expenses and other current liabilities	$ 64,387	$ 56,591