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Debt Obligations - Current Maturities of Long-Term Debt and Short-Term Debt (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Debt Disclosure [Abstract]    
Short-term debt $ 13,472 $ 4,233
Current maturities of long-term debt 10,276 10,531
Current maturities of long-term debt and short-term debt $ 23,748 $ 14,764