LONG-TERM DEBT - Credit Facility (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2022	Dec. 31, 2021
Long-term debt
Interest at a fixed rate		3.73%
Long-term debt	$ 286,506	$ 286,506	$ 267,740
Credit Facility
Long-term debt
Percentage of borrowing capacity		50.00%
Current commitment under credit facility, amount	250,000	$ 250,000
Long-term debt	58,000	$ 58,000
Credit facility	300
Credit Facility | Maximum
Long-term debt
Percentage of interest rate deductions		0.025%
Credit Facility | LIBOR | Minimum
Long-term debt
Marginal rate of fee on unused credit limit		0.15%
Credit Facility | LIBOR | Maximum
Long-term debt
Marginal rate of fee on unused credit limit		0.25%
Credit Facility | SOFR
Long-term debt
Interest at a fixed rate		0.10%
Credit Facility | SOFR | Minimum
Long-term debt
Interest at a fixed rate		1.25%
Credit Facility | SOFR | Maximum
Long-term debt
Interest at a fixed rate		2.20%
Credit Facility Maturing January 31, 2027
Long-term debt
Maximum borrowing capacity	250,000	$ 250,000
Extension term		1 year
Term Loan
Long-term debt
Maximum borrowing capacity including accordion feature	$ 750,000	$ 750,000