Maturity Period Of Short Term Interest Bearing Securities Included In Cash And Cash Equivalents

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- Definition

Minimum Amount Of Nonaccrual Business And Commercial Real Estate Loans Evaluated Individually For Impairment

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- Definition

Minimum Period Of Loans Past Due

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- Definition

Other Comprehensive Income Reclassification Adjustment For Held To Maturity Transferred From Available For Sale Securities Before Tax

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No definition available.

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- Definition

Securities Transferred From Available For Sale To Held To Maturity

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- Definition

Summary Of Significant Accounting Policies [Line Items]

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- Definition

The recorded amount of loans and debt securities, with evidence of deterioration of credit quality since origination that were acquired by completion of a transfer for which it was probable, at acquisition, that the investor would be unable to collect all contractually required payments receivable, but which are not deemed to be impaired since the acquisition by transfer. Therefore, no allowance for credit losses is recorded.

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- Definition

Amount of increase (decrease) in allowance for credit loss on investment in debt security measured at amortized cost (held-to-maturity).

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- Definition

Amount, before allowance for credit loss, of accrued interest on financing receivable.

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- Definition

The effect of a change in method or methods for calculating the allowance for credit losses on the current period provision.

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- Definition

Amount of increase (decrease) in allowance for credit loss on financing receivable.

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- Definition

Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

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- Definition

Amount of expense (reversal of expense) for expected credit loss for off-balance sheet credit exposure. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging.

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- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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- Definition

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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Summary of Significant Accounting Policies - Additional Information (Details) - USD ($)	3 Months Ended	12 Months Ended
	Sep. 30, 2013	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2013	Dec. 31, 2018	Dec. 31, 2017
Summary Of Significant Accounting Policies [Line Items]
Maturity period of highly liquid debt instruments		three months
Available-for-sale securities transferred to held-to-maturity securities	$ 536,000,000.0			$ 536,000,000.0
Unrealized net loss on securities reclassified from available-for-sale to held-to-maturity, Gross	$ 13,300,000			$ 13,300,000
Loans past due, minimum period		90 days
Impaired loans on non-accrual commercial real estate, multi-family, land, construction, commercial and industrial loans		$ 250,000	$ 250,000
Interest and dividends receivable		35,269,000	21,674,000
Accrued interest, before allowance for credit loss		8,000,000.0
Stockholders’ equity		(1,484,130,000)	(1,153,119,000)		$ (1,039,358,000)	$ (601,941,000)
Purchased credit impaired (“PCI”) loans			13,300,000
Effect of change in method		$ 3,200,000
Cumulative Effect, Period of Adoption, Adjustment
Summary Of Significant Accounting Policies [Line Items]
Stockholders’ equity			4,000			$ 0
Computer Equipment
Summary Of Significant Accounting Policies [Line Items]
Estimated depreciable life of assets (years)		3 years
Furniture, Fixtures and Other Electronic Equipment
Summary Of Significant Accounting Policies [Line Items]
Estimated depreciable life of assets (years)		5 years
Building Improvements
Summary Of Significant Accounting Policies [Line Items]
Estimated depreciable life of assets (years)		10 years
Buildings
Summary Of Significant Accounting Policies [Line Items]
Estimated depreciable life of assets (years)		30 years
Accounting Standards Update 2016-13
Summary Of Significant Accounting Policies [Line Items]
allowance for credit loss, period increase (decrease)		$ 475,000
Debt securities, held-to-maturity, allowance for credit loss, period increase (decrease)		1,300,000
Off-Balance sheet, credit loss		$ 788,000
Accounting Standards Update 2016-13 \| Cumulative Effect, Period of Adoption, Adjustment
Summary Of Significant Accounting Policies [Line Items]
Stockholders’ equity			$ 4,000