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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)

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