Acquisitions Purchase Price Allocation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Pro Forma [Abstract]
Payments to Acquire Businesses, Gross	$ 5,307	$ 32,286
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities	0	3,065
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	65	0
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities	158	2,434
Business Combination, Consideration Transferred	5,373	37,785
Goodwill, Acquired During Period	2,086
Business Combination, Acquired Receivable, Fair Value	271	3,323
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment	0	1,796
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory	123	6,315
Business Combination, Consideration Transferred, Other	$ 0	$ 748