LONG-TERM DEBT - Credit Facility (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Dec. 31, 2022
Long-term debt
Interest at a fixed rate	3.36%
Long-term debt	$ 249,020	$ 267,116
Credit Facility
Long-term debt
Interest at a fixed rate	0.10%
Percentage of borrowing capacity	50.00%
Current commitment under credit facility, amount	$ 250,000
Amount outstanding	50,000
Long-term debt	$ 50,000
Credit Facility | Maximum
Long-term debt
Percentage of interest rate deductions	0.025%
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%
Marginal rate of fee on unused credit limit	0.15%
Credit Facility | SOFR | Maximum
Long-term debt
Interest at a fixed rate	2.20%
Marginal rate of fee on unused credit limit	0.25%
Credit Facility Maturing January 31, 2027
Long-term debt
Maximum borrowing capacity	$ 250,000
Extension term	1 year
Term Loan
Long-term debt
Maximum borrowing capacity including accordion feature	$ 750,000