Leases - Supplemental Balance Sheet Information (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Operating leases
Operating lease right-of-use assets	$ 6,605,000
Operating lease liabilities - current	1,200,000
Operating lease liabilities - long-term	5,940,000
Total operating lease liabilities	7,140,000
Finance leases
Property and equipment, at cost	8,663,000	$ 8,542,000
Accumulated depreciation	(3,297,000)	(1,922,000)
Property and equipment, net	5,366,000	6,620,000
Finance lease liabilities - current	2,316,000	2,830,000
Finance lease liabilities - long-term	96,000	2,295,000
Finance lease obligations	$ 2,412,000	$ 5,125,000
Weighted average remaining lease term:
Operating leases	6 years 3 months 18 days	7 years 3 months 18 days
Finance leases	9 months 18 days	1 year 9 months 18 days
Weighted average discount rate:
Operating leases	5.04%
Finance leases	4.67%	4.65%