Adoption of Accounting Standards Codification 842 - Lease Costs (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Leases [Abstract]
Operating leases expense	$ 3,963
Finance leases expense:
Amortization of right-of-use assets	216
Interest on lease liabilities	42
Total finance lease expense	$ 258