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INCOME TAXES (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
INCOME TAXES |  |  |  |
Effective tax rate (as a percent) | 1.50% | 27.50% | (6.70%) | 26.70%
Income tax benefit from investment tax credit |  | $ 1.3 |  | $ 1.3
Benefit from the reversal of unrecognized tax positions due to statute expiration |  |  | $ 2.9 |
Income Tax Benefit, Utilization of Losses at Higher Rate, Coronavirus Aid, Relief, and Economic Security Act | $ 0.6 |  | 1.0 |
Interest on unrecognized tax position | 0.4 | $ 0.5 | 1.4 |
Income tax benefit from reversal of deferred tax liability due to intercompany debt restructure |  |  |  | $ 0.5
Change in valuation allowance | $ 0.2 |  | $ 0.6 |

X
- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to interest expenses on unrecognized tax positions. + References No definition available. + Details
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- Definition Represents the information Pertaining to benefit from the reversal of a deferred tax liability due to an intercompany debt restructure. + References No definition available. + Details
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- Definition The amount of income tax benefit due to utilization of losses at higher rate as per Coronavirus Aid, Relief, and Economic Security (CARES) Act. + References No definition available. + Details
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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32687-109319 + Details
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