XML 79 R64.htm IDEA: XBRL DOCUMENT
v3.20.4

Loans and Leases - Summary of Interest Income on Non accrual loans (Details) - Non-Covered Loans - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Interest income that would have been recorded | $ 4,491 | $ 5,599 | $ 4,145
Interest income actually recorded | (939) | (3,409) | (3,480)
Interest income foregone | $ 3,552 | $ 2,190 | $ 665

X
- Definition Reflects the amount of interest income on impaired and nonperforming loans that would have been recorded during the reporting period. + References No definition available. + Details
Name: | nycb_FinancingReceivableImpairedInterestIncomeThatWouldHaveBeenRecorded
Namespace Prefix: | nycb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Financing Receivable, Impaired, Interest Lost on Non Accrual Loans + References No definition available. + Details
Name: | nycb_FinancingReceivableImpairedInterestLostOnNonAccrualLoans
Namespace Prefix: | nycb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of interest income recognized on a cash-basis method of accounting that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5212-111524 + Details
Name: | us-gaap_ImpairedFinancingReceivableInterestIncomeCashBasisMethod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=nycb_NonCoveredLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |