Acquisitions Pro Forma (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual			$ 1,062
Business Acquisition, Pro Forma Revenue			1,373
Business Acquisition, Pro Forma Net Income (Loss)			91
Business Combination, Bargain Purchase, Gain Recognized, Amount	$ 0	$ 0	70,890
Inventories [Member]
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory			66,300
Acquisition-related Costs [Member]
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Business Acquisition, Transaction Costs			$ 59,200