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STOCKHOLDERS' EQUITY. (Details) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
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Stockholders' Equity Note [Abstract] |  |
Unsettled common stock repurchases liability | $ 2.5 | $ 12.2
Common shares authorized for future repurchase (shares) | 21,467,311 |
Restricted stockholders' equity | $ 256.0 |

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- Definition Unsettled Common Stock Repurchases Liabilities + References No definition available. + Details
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- Definition Amount of restricted net assets of consolidated and unconsolidated subsidiaries as of the end of the most recently completed fiscal year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(e)(3)(ii)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 + Details
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- Definition The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan. + References No definition available. + Details
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- References No definition available. + Details
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