FAIR VALUE MEASUREMENTS (Fair Value by Balance Sheet Grouping) (Details) - Estimate of Fair Value Measurement - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Series A 2020 Bonds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes payable, fair value disclosure	$ 143,857	$ 189,773
Series B 2020 Bonds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes payable, fair value disclosure	80,014	81,637
Series A 2021 Bonds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes payable, fair value disclosure	161,095	222,023
Series B 2021 Bonds
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes payable, fair value disclosure	177,616	194,278
Senior Notes due 2025
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes payable, fair value disclosure	802,766	881,408
Senior Notes due 2027
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes payable, fair value disclosure	396,668	448,848
Senior Notes due 2028
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes payable, fair value disclosure	$ 829,500	$ 1,019,470