Schedule II - Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2015

Valuation and Qualifying Accounts [Abstract]

Schedule II - Valuation and Qualifying Accounts

(in thousands)	Allowance for doubtful accounts
	December 31, 2015			December 31, 2014			December 31, 2013
Balance at beginning of year	$	790		$	200		$	202
Charged to costs and expenses	1,008			689			56
Charged to other accounts	341			—			—
Write-offs	(1,221		)	(99		)	(58		)
Balance at end of year	$	918		$	790		$	200