Income Taxes (Schedule of Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Income Taxes
Working capital	$ 13,307	$ 4,703
Property, plant and equipment	5,579	6,385
Share-based compensation	5,973	4,923
Tax losses and tax credit carryforwards	33,248	48,881
Lease liabilities	29,523	2,578
Other	3,088	12,266
Deferred tax assets	90,718	79,736
Property, plant and equipment	(14,783)	(10,918)
Goodwill	(8,499)	(8,390)
Intangible assets	(50,531)	(54,810)
Right-of-use assets	(25,244)
Other	(7,496)	(12,051)
Deferred tax liabilities	(106,553)	(86,169)
Net deferred tax assets (liabilities)	(15,835)	(6,433)
Valuation allowance	(12,913)	(13,438)
Total Deferred Tax Assets (Liabilities)	$ (28,748)	$ (19,871)