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Short-Term and Long-Term Borrowings - Schedule of Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Short-Term Debt	$ 91,163	$ 80,997
Current Maturities of Long-Term Debt	29,983	140,087
Long-Term Debt, net of current maturities	734,014	624,432
Total	855,160	845,516
OTC
Debt Instrument [Line Items]
Short-Term Debt	22,637	65,166
Current Maturities of Long-Term Debt	0	169
Long-Term Debt, net of current maturities	79,746	79,695
Total	102,383	145,030
OTP
Debt Instrument [Line Items]
Short-Term Debt	68,526	15,831
Current Maturities of Long-Term Debt	29,983	139,918
Long-Term Debt, net of current maturities	654,268	544,737
Total	$ 752,777	$ 700,486

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