Leases (Schedule of Maturities of Lease Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Operating leases
Year one	$ 4,737
Year two	3,412
Year three	2,199
Year four	1,801
Year five	1,782
Thereafter	2,789
Total lease payments	16,720
Less imputed interest	(1,989)
Total operating lease liabilities	14,731	$ 18,022
Finance lease
Year one	2,838
Year two	3,004
Year three	3,004
Year four	3,004
Year five	3,004
Thereafter	6,501
Total lease payments	21,355
Less imputed interest	(5,234)
Finance lease obligation	$ 16,121	17,559
Salt Lake City, Utah
Operating leases
Year one		5,135
Year two		4,202
Year three		2,829
Year four		1,986
Year five		1,788
Thereafter		4,587
Total lease payments		20,527
Less imputed interest		(2,505)
Total operating lease liabilities		18,022
Finance lease
Year one		2,790
Year two		2,838
Year three		3,004
Year four		3,004
Year five		3,004
Thereafter		9,505
Total lease payments		24,145
Less imputed interest		(6,586)
Finance lease obligation		$ 17,559