Leases (Lease Cost) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Leases [Abstract]
Operating lease expense	$ 193	$ 234	$ 387	$ 469
Short-term lease expense	1,268	660	2,665	1,222
Variable lease expense	133	102	256	199
Finance lease expense:
Amortization of right-of-use assets	330	286	645	545
Interest expense on lease liabilities	99	155	213	321
Total finance lease expense	429	441	858	866
Total lease expense	$ 2,023	$ 1,437	4,166	2,756
Cash paid for amounts included in measurement of lease liabilities:
Operating cash flows from operating leases			364	487
Operating cash flows from finance leases			211	317
Financing cash flows from finance leases			2,278	1,754
Right-of-use assets obtained or recorded in exchange for lease obligations:
Operating leases			153
Finance leases			$ 1,367	$ 632