Business Acquisitions Purchase Price (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Jun. 30, 2014	Dec. 31, 2013
Business Acquisition [Line Items]
Identifiable intangible assets	$ 5,158
Goodwill	$ 2,116	$ 2,116	$ 2,116		$ 21,051
PECO and FGC Acquisitions
Business Acquisition [Line Items]
Current assets				$ 2,391
Property, plant and equipment				0
Identifiable intangible assets				5,158
Current and long-term liabilities assumed				(3,935)
Total identifiable net assets acquired				3,614
Goodwill				4,465
Total assets acquired				8,079
Scenario, Previously Reported | PECO and FGC Acquisitions
Business Acquisition [Line Items]
Current assets				2,365
Property, plant and equipment				281
Identifiable intangible assets				0
Current and long-term liabilities assumed				(2,035)
Total identifiable net assets acquired				611
Goodwill				7,468
Total assets acquired				8,079
Measurement Adjustments | PECO and FGC Acquisitions
Business Acquisition [Line Items]
Current assets				26
Property, plant and equipment				(281)
Identifiable intangible assets				5,158
Current and long-term liabilities assumed				(1,900)
Total identifiable net assets acquired				3,003
Goodwill				(3,003)
Total assets acquired				$ 0