Loans Receivable - Components of the Allowance for Loan Losses (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Components of the Allowance For Loan Losses:
Beginning Balance	$ 14,911	$ 12,970
Provision for Loan Losses	34,038	21,667
Charge-offs	(19,504)	(22,204)
Recoveries	3,219	2,478
Ending Balance	42,127	14,911
Adjustment to stockholders' equity	$ (986,136)	$ (1,737,259)	$ (1,760,708)	$ (1,728,004)

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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Amount of increase in allowance for credit loss on financing receivable from recovery.

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Amount of writeoff of financing receivable, charged against allowance for credit loss.

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Amount of credit loss expense (reversal of expense) for financing receivable.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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