Property and Equipment - Components of Property and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Components of Property, Plant and Equipment
Property and equipment	$ 111,020	$ 105,117
Less accumulated depreciation	(37,309)	(30,426)
Property and equipment, net	73,711	74,691
Land
Components of Property, Plant and Equipment
Property and equipment	6,748	5,837
Buildings and leasehold improvements
Components of Property, Plant and Equipment
Property and equipment	43,431	42,986
Machinery and equipment
Components of Property, Plant and Equipment
Property and equipment	38,862	36,187
Equipment in progress
Components of Property, Plant and Equipment
Property and equipment	5,475	3,235
Furniture and fixtures
Components of Property, Plant and Equipment
Property and equipment	2,029	1,969
Transportation equipment
Components of Property, Plant and Equipment
Property and equipment	2,307	3,059
Computer equipment and software
Components of Property, Plant and Equipment
Property and equipment	$ 12,168	$ 11,844