FEDERAL AND STATE CURRENT AND DEFERRED INCOME TAX - Operating Loss, Federal Tax Credit, and State Capital Loss Carryforwards (Details) $ in Thousands	Dec. 31, 2020 USD ($)
State and Federal Capital Losses
Tax Credit Carryforward [Line Items]
Operating loss carryforwards	$ 84,242
Federal Net Operating Losses
Tax Credit Carryforward [Line Items]
Operating loss carryforwards	155,294
Tax credit carryforwards	5,358
State Losses
Tax Credit Carryforward [Line Items]
Operating loss carryforwards	129,126
Expire 2021 | State and Federal Capital Losses
Tax Credit Carryforward [Line Items]
Operating loss carryforwards	0
Expire 2021 | Federal Net Operating Losses
Tax Credit Carryforward [Line Items]
Operating loss carryforwards	0
Tax credit carryforwards	173
Expire 2021 | State Losses
Tax Credit Carryforward [Line Items]
Operating loss carryforwards	0
Expire 2022 through 2027 | State and Federal Capital Losses
Tax Credit Carryforward [Line Items]
Operating loss carryforwards	84,242
Expire 2022 through 2027 | Federal Net Operating Losses
Tax Credit Carryforward [Line Items]
Operating loss carryforwards	0
Tax credit carryforwards	622
Expire 2022 through 2027 | State Losses
Tax Credit Carryforward [Line Items]
Operating loss carryforwards	0
Expire 2028 through 2032 | State and Federal Capital Losses
Tax Credit Carryforward [Line Items]
Operating loss carryforwards	0
Expire 2028 through 2032 | Federal Net Operating Losses
Tax Credit Carryforward [Line Items]
Operating loss carryforwards	50,333
Tax credit carryforwards	3,459
Expire 2028 through 2032 | State Losses
Tax Credit Carryforward [Line Items]
Operating loss carryforwards	34,268
Expire 2033 through 2039 | State and Federal Capital Losses
Tax Credit Carryforward [Line Items]
Operating loss carryforwards	0
Expire 2033 through 2039 | Federal Net Operating Losses
Tax Credit Carryforward [Line Items]
Operating loss carryforwards	98,705
Tax credit carryforwards	1,104
Expire 2033 through 2039 | State Losses
Tax Credit Carryforward [Line Items]
Operating loss carryforwards	94,858
Indefinite Expiry | State and Federal Capital Losses
Tax Credit Carryforward [Line Items]
Operating loss carryforwards	0
Indefinite Expiry | Federal Net Operating Losses
Tax Credit Carryforward [Line Items]
Operating loss carryforwards	6,256
Tax credit carryforwards	0
Indefinite Expiry | State Losses
Tax Credit Carryforward [Line Items]
Operating loss carryforwards	$ 0