Leases (Supplemental Cash Flow Information Related to Leases) (Details 3) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Dec. 31, 2020	Sep. 18, 2020	Dec. 31, 2019
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	$ 341	$ 7,341	$ 10,995
Operating cash flows from interest on finance leases	1	3	40
Financing cash flows from finance leases	78	10	1,275
Right-of-use assets obtained in exchange for lease obligations
Operating leases	19,902	1,049	415
Finance leases	$ 0	$ 162	$ 0