Leases - Lease-related Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Operating lease liabilities:
Current lease liabilities included in Other accrued expenses	$ 896	$ 883
Long-term lease liabilities	23,806	24,037
Total operating lease liabilities	24,702	24,920
Financing lease liabilities:
Current portion included in Current portion of long-term debt and finance lease obligations	299	296
Long-term portion of lease liabilities included in Long-term debt and finance lease obligations, net of current portion	728	804
Total financing lease liabilities	1,027	1,100
Total lease liabilities	$ 25,729	$ 26,020
Weighted-average remaining lease term:
Operating leases	24 years	24 years
Finance leases	4 years	4 years
Weighted-average discount rate:
Operating leases	4.72%	4.72%
Finance leases	3.72%	3.70%