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INCOME TAXES - OPERATING LOSS AND TAX CREDIT CARRYFORWARDS (Details) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Operating Loss and Tax Credit Carryforwards |  |
Valuation allowances | $ 10.0 | $ 10.6
Operating loss carryforwards, not expected to benefit the entity | 157.9 | 157.9
U.S. Federal Income Tax |  |
Operating Loss and Tax Credit Carryforwards |  |
Net operating losses carryforwards | 7.6 | 71.2
State Income Tax |  |
Operating Loss and Tax Credit Carryforwards |  |
Net operating losses carryforwards | 185.9 | 184.5
Alternative minimum tax credit carryforwards | 4.0 | 6.7
Foreign Income Tax |  |
Operating Loss and Tax Credit Carryforwards |  |
Net operating losses carryforwards | $ 11.9 | $ 14.0

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