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Leases - Leases Balance Sheet Information (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Balance sheet information related to leases    
Lease assets $ 21,911 $ 21,279
Lease liabilities, current 3,456 2,825
Lease liabilities, long term 30,804 30,440
Total lease liabilities $ 34,260 $ 33,265
Weighted-average remaining lease term (years) 12 years 1 month 6 days 12 years 6 months
Weighted-average discount rate 4.30% 4.40%