Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accounting Policies [Abstract]
Depreciation	$ 4,700	$ 4,600	$ 4,800
Amortization expense of capitalized software	$ 3,100	$ 3,800	$ 3,800
Treasury stock, shares acquired	7,162	11,261	2,256
Property, Plant and Equipment [Line Items]
Goodwill	$ 5,520	$ 319	$ 0
Asset Impairment Charges	0	0	(3,046)
Treasury Stock, Value, Acquired, Cost Method	$ (176)	(248)	(80)
Buildings and improvements | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	20 years
Buildings and improvements | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	30 years
Machinery and equipment, furniture and fixtures, and vehicles | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	3 years
Machinery and equipment, furniture and fixtures, and vehicles | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	10 years
Capitalized software | Minimum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	3 years
Capitalized software | Maximum
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	5 years
Treasury Stock
Property, Plant and Equipment [Line Items]
Treasury Stock, Value, Acquired, Cost Method	$ (176)	$ (248)	$ (80)