Derivatives - Narrative (Details) - USD ($)		3 Months Ended
	Dec. 19, 2012	Mar. 31, 2017	Dec. 31, 2016	Aug. 05, 2016
Derivative [Line Items]
Accumulated other comprehensive income (loss), interest rate swap, tax benefit			$ (1,941,000)
Revenue and cost of sales
Derivative [Line Items]
Amount expected to be reclassified from accumulated other comprehensive income to earnings in next twelve months, gross		$ 156,000
Amount expected to be reclassified from accumulated other comprehensive income to earnings in next twelve months, net of tax		95,000
Interest expense
Derivative [Line Items]
Amount expected to be reclassified from accumulated other comprehensive income to earnings in next twelve months, gross		334,000
Amount expected to be reclassified from accumulated other comprehensive income to earnings in next twelve months, net of tax		204,000
Interest rate swap
Derivative [Line Items]
Notional amount of derivative	$ 150,000,000			$ 42,500,000
Fixed rate	0.9825%			1.12%
Quarterly reduction of notional amount	50.00%
Accumulated other comprehensive income (loss), interest rate swap, tax benefit		$ (2,091,000)
Interest rate swap | Maximum
Derivative [Line Items]
Notional amount of derivative				$ 175,000,000