Acquisitions Purchase Price Allocation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Pro Forma [Abstract]
Payments to Acquire Businesses, Gross	$ 6,030	$ 441	$ 0
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	412	0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	188	0
Business Combination, Consideration Transferred	6,630	441
Goodwill, Acquired During Period	5,231	299
Finite-Lived Customer Relationships, Gross	733	0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory	584	137
Business Combination, Consideration Transferred, Other	$ 82	$ 5