Debt - Schedule of Long Term Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current Maturities:
Finance lease obligations	$ 59	$ 66
Term debt	15,000	15,000
Total Long-term debt, current maturities	15,059	15,066
Long-term debt:
Finance lease obligations	33	87
Total Long-term debt	279,215	270,320
Total debt	294,274	285,386
Term Loan
Long-term debt:
Long-term debt, excluding current maturities	254,182	265,233
Line of Credit | Unsecured Debt
Long-term debt:
Long-term debt, excluding current maturities	$ 25,000	$ 5,000