Leases - Lease Cost and Supplemental Cash Flow Information Related to Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Leases [Abstract]
Total lease expense	$ 1,632
Total lease expense		$ 1,798
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from leases	$ 1,978