Leases - Cash Flow Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows for operating leases	$ 683	$ 738
Operating cash flows for finance leases	1	2
Financing cash flows for finance leases	5	41
Right-of-use assets obtained in exchange for lease obligations:
Operating leases	$ 794	$ 4,070