Accounts Receivable, net (Tables)

12 Months Ended

Dec. 31, 2014

Receivables [Abstract]

Summary of accounts receivable, net

Accounts receivable, net, consists of the following:

	December 31,
	2014			2013
	(in thousands)
Accounts receivable, gross	$	34,790		$	22,048
Less allowance for doubtful accounts	(1,172		)	(109		)
Total accounts receivable, net	$	33,618		$	21,939

Summary of allowance for doubtful accounts

The allowance for doubtful accounts consists of the following:

	Years Ended December 31,
	2014			2013			2012
	(in thousands)
Beginning balance	$	109		$	655		$	646
Provision	1,064			48			90
Write-offs	(2		)	(598		)	(87		)
Recoveries	1			4			6
Ending balance	$	1,172		$	109		$	655