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Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount.

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Long-term Debt and Line of Credit - Provisions of Term Loan (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Jun. 30, 2021	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Debt Instrument [Line Items]
Interest paid on termination of interest rate swap		$ 2,220	$ 2,676
Sixth Swap
Debt Instrument [Line Items]
Interest paid on termination of interest rate swap	$ 1,300
Interest Expense \| Sixth Swap
Debt Instrument [Line Items]
Loss on mark to market of interest rate swap due to early extinguishment of debt	1,300
Line of Credit
Debt Instrument [Line Items]
Outstanding principal balance		19,434		$ 35,086
Other Debt
Debt Instrument [Line Items]
Outstanding principal balance		$ 400
Term Loan \| Line of Credit
Debt Instrument [Line Items]
Original principal amount	60,000
Early debt extinguishment penalties	0
Term Loan \| Line of Credit \| Interest Expense
Debt Instrument [Line Items]
Charge-off of unamortized debt issuance costs due to early extinguishment of debt	$ 800