Leases (Schedule of Maturities of Lease Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Operating leases
2020	$ 5,153
2021	4,133
2022	3,096
2023	2,128
2024	1,496
Thereafter	5,332
Total lease payments	21,338
Less imputed interest	(2,929)
Total	18,409
Finance lease
2020	3,347
2021	3,347
2022	3,394
2023	3,560
2024	3,560
Thereafter	15,692
Total lease payments	32,900
Less imputed interest	(8,365)
Total	24,535	$ 25,900
Salt Lake City, Utah [Member]
Finance lease
2020	2,451
2021	2,974
2022	2,990
2023	3,054
2024	3,277
Thereafter	18,930
Total lease payments	33,676
Less imputed interest	(7,790)
Total	$ 25,886