Notes Payable (Schedule of Maturities of Debt) (Details) $ in Thousands	Dec. 31, 2021 USD ($)
Notes Payable [Abstract]
2022	$ 0
2023	0
2024	0
2025	0
2026	0
Thereafter	375,000
Total	$ 375,000

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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