Accounts Receivable (Tables)

3 Months Ended

Mar. 31, 2017

Receivables [Abstract]

Accounts Receivable

	March 31, 2017			December 31, 2016
	(in thousands)
Accounts receivable	$	44,651		$	43,091
Less:  Allowance for doubtful accounts	(274		)	(90		)
Total, net	$	44,377		$	43,001

Allowance for Doubtful Accounts

	Three months ended
	March 31, 2017		March 31, 2016
Allowance for doubtful accounts:	(in thousands)
Balance, beginning of period	$	90	$	115
Provisions for losses on accounts receivables, net of recoveries	184		123
Accounts receivable written off	—		—
Balance, end of period	$	274	$	238