Property, Plant and Equipment, Net - Schedule of Components (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	$ 252,656	$ 238,404
Land and land improvements
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, gross	17,645	17,410
Buildings and leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, gross	93,106	88,825
Furniture and equipment
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, gross	168,482	160,546
Property, plant and equipment in service, net
Property, Plant and Equipment [Line Items]
Property, plant, and equipment, gross	279,233	266,781
Accumulated depreciation	(113,322)	(108,425)
Property, plant and equipment, net	165,911	158,356
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	$ 86,745	$ 80,048