Accounts Receivable (Tables)

12 Months Ended

Dec. 31, 2014

Receivables [Abstract]

Schedule of Accounts Receivable

Accounts receivable balances were as follows (in thousands):

	December 31,
	2014			2013
Trade customers	$	457,823		$	392,233
Equipment manufacturers	7,725			6,102
Other	23,375			27,605
Total accounts receivable	488,923			425,940
Less: Allowance for doubtful accounts	(9,924		)	(7,504		)
Accounts receivable, net	$	478,999		$	418,436

Schedule Of Allowance For Doubtful Accounts

The following schedule presents the rollforward of the allowance for doubtful accounts (in thousands):

	December 31,
	2014			2013			2012
Beginning balance	$	7,504		$	7,432		$	6,617
Provision	2,844			1,370			977
Recoveries	89			35			103
Write-offs	(513		)	(1,333		)	(265		)
Ending balance	$	9,924		$	7,504		$	7,432