Leases (Schedule of Maturities of Operating Lease Liabilities) (Details) $ in Thousands	Sep. 30, 2019 USD ($)
Operating Leases
2020 (remaining nine months)	$ 15,749
2021	19,941
2022	19,142
2023	15,516
2024	6,128
Thereafter	12,182
Total future minimum lease payments	88,658
Less amount representing interest	9,352
Total operating lease liabilities	79,306
Operating lease liabilities, current	17,767
Operating lease liabilities, non-current	$ 61,539