Basis of Presentation and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2016

Receivables [Abstract]

Schedule of Gross Amounts of Accounts Receivable

The following table presents the gross amounts of our accounts receivable (in thousands):

	At December 31,
	2016			2015
Trade receivables	$	320,321		$	296,795
Vendor receivables		35,482			40,530
Other receivables		3,978			4,251
Total gross accounts receivable		359,781			341,576
Less: Allowance for doubtful accounts receivable		(832	)		(558	)
Accounts receivable, net	$	358,949		$	341,018

Schedule of Products by Manufacturer

Our top sales of products by manufacturer as a percent of our gross billed sales were as follows for the periods presented:

	Years Ended December 31,
	2016			2015			2014
Microsoft	$	15	%		14	%		10	%
HP Inc.		10			11			18
Cisco		9			10			6

Schedule of Estimated Useful Lives of Property and Equipment

Autos	3 – 5 years
Computers, software, machinery and equipment	1 – 7 years
Leasehold improvements	1 – 10 years
Furniture and fixtures	3 – 15 years
Building and improvements	5 – 31 years