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Leases - Lease Term And Discount Rate And Cash Flow Information (Details)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2019
USD ($)
Sep. 30, 2019
USD ($)
Leases    
Weighted average remaining lease term - operating leases 7 years 9 months 18 days 7 years 9 months 18 days
Weighted average remaining lease term - finance leases 22 years 6 months 22 years 6 months
Weighted average discount rate - operating leases (as a percent) 5.50% 5.50%
Weighted average discount rate - finance leases (as a percent) 6.00% 6.00%
Cash paid for amounts included in the measurement of lease liabilities - Operating cash flows from operating leases $ 540 $ 1,480
Cash paid for amounts included in the measurement of lease liabilities - Operating cash flows from finance leases 1,028 2,041
Right-of-use asset obtained in exchange for lease obligations: Operating leases $ 194 13,366
Right-of-use asset obtained in exchange for lease obligations: Finance leases   $ 54,528