Commitments, Contingencies and Other Items (Schedule of Future Minimum Payments, Operating and Finance Leases) (Details) $ in Thousands	Dec. 31, 2020 USD ($)
Operating Leases
2021	$ 8,250
2022	7,379
2023	4,107
2024	2,987
2025	2,864
After 2025	8,767
Future minimum lease payments under existing leases	34,354
Finance Leases
2021	2,661
2022	2,661
2023	2,661
2024	2,661
2025	2,661
After 2025	7,468
Future minimum lease payments under existing leases	$ 20,773

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Amount of lessee's undiscounted obligation for lease payments for finance lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918701-209980

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Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

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Amount of lessee's undiscounted obligation for lease payment for finance lease to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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