Commitments and Contingencies (Lease Costs, Cash Flows and Balance Sheet Supplemental Information) (Details) - USD ($) $ in Thousands |
3 Months Ended | ||
|---|---|---|---|
Mar. 31, 2020 |
Mar. 31, 2019 |
Dec. 31, 2019 |
|
| Leases [Abstract] | |||
| Operating lease cost | $ 1,611 | $ 1,459 | |
| Cash paid for amounts included in the measurement of lease liabilities: | |||
| Operating cash flows for operating leases | 1,658 | 1,525 | |
| Right-of-use assets obtained in exchange for new lease obligations: | |||
| Operating leases | 0 | $ 71 | |
| Supplemental balance sheet information related to operating leases was as follows: | |||
| Operating lease right-of-use assets | 24,789 | $ 24,876 | |
| Operating lease liabilities | $ 24,789 | $ 24,876 | |
| Weighted Average Remaining Lease Term | |||
| Operating leases | 7 years 3 months 25 days | 7 years 5 months 19 days | |
| Weighted Average Discount Rate | |||
| Operating leases | 3.20% | 3.20% | |