PARENT COMPANY FINANCIAL STATEMENTS - Statements of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash Flows from Operating Activities:
Net Cash Provided by Operating Activities	$ 152,013	$ 374	$ 63,272
Cash Flows from Investing Activities:
Net Cash Used in Investing Activities	(116,973)	(96,028)	(69,564)
Cash Flows from Financing Activities:
Proceeds Received from Exercise of Apollo Warrants			4,667
Net Cash Provided by Financing Activities	212,382	101,539	27,329
Net Increase in Cash, Cash Equivalents and Restricted Cash	247,422	5,885	21,037
Cash, Cash Equivalents and Restricted Cash--Beginning of the Period	70,363	64,478	43,441
Cash, Cash Equivalents and Restricted Cash--End of the Period	317,785	70,363	64,478
Parent Company
Cash Flows from Investing Activities:
Net Payments to Subsidiary		(28)
Net Cash Used in Investing Activities		(28)
Cash Flows from Financing Activities:
Net Payments from Subsidiary			7
Proceeds Received from Exercise of Apollo Warrants		21
Net Cash Provided by Financing Activities		21	7
Net Increase in Cash, Cash Equivalents and Restricted Cash		(7)	7
Cash, Cash Equivalents and Restricted Cash--Beginning of the Period	$ 7	7
Cash, Cash Equivalents and Restricted Cash--End of the Period		$ 7	$ 7

Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

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