Business Acquisition (Schedule of Finite-Lived Intangible Assets, Future Amortization Expense) (Details) $ in Thousands	Dec. 31, 2018 USD ($)
Business Acquisition [Line Items]
2019 (remaining)	$ 38,893
2020	40,660
2021	41,760
2022	39,554
2023	38,496
Thereafter	407,521
Total Finite-Lived Intangible Assets, Net	606,884
Business Acquisition, Acquiree - L'Orange [Member]
Business Acquisition [Line Items]
2019 (remaining)	21,543
2020	19,627
2021	22,586
2022	22,535
2023	22,535
Thereafter	356,994
Total Finite-Lived Intangible Assets, Net	$ 465,820