XML 73 R62.htm IDEA: XBRL DOCUMENT
v3.19.1

Loan Quality and Allowance for Loan Losses - Contractual Payment Status of Loans Receivable (Detail) - USD ($) $ in Thousands | Mar. 31, 2019 | Jun. 30, 2018
--- | --- | ---
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current | $ 4,705,452 | $ 4,557,210
Total past due | 10,064 | 10,705
Loans and Leases Receivable, Gross | 4,715,516 | 4,567,915
Residential Mortgage [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current | 1,318,191 | 1,290,428
Total past due | 6,914 | 7,025
Loans and Leases Receivable, Gross | 1,325,105 | 1,297,453
Non-Residential Mortgage [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current | 1,247,238 | 1,300,570
Total past due | 1,977 | 2,391
Loans and Leases Receivable, Gross | 1,249,215 | 1,302,961
Construction [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current | 14,377 | 23,271
Loans and Leases Receivable, Gross | 14,377 | 23,271
Commercial Business [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current | 65,614 | 85,065
Total past due | 862 | 760
Loans and Leases Receivable, Gross | 66,476 | 85,825
Other Consumer [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current | 5,922 | 8,917
Total past due | 62 | 143
Loans and Leases Receivable, Gross | 5,984 | 9,060
Multi-Family Mortgage [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current | 1,956,571 | 1,758,584
Loans and Leases Receivable, Gross | 1,956,571 | 1,758,584
Past due: 30-59 days [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total past due | 1,992 | 2,847
Past due: 30-59 days [Member] | Residential Mortgage [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total past due | 1,447 | 1,457
Past due: 30-59 days [Member] | Non-Residential Mortgage [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total past due |  | 1,015
Past due: 30-59 days [Member] | Commercial Business [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total past due | 526 | 247
Past due: 30-59 days [Member] | Other Consumer [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total past due | 19 | 24
Past due: 60-89 days [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total past due | 19 | 578
Past due: 60-89 days [Member] | Residential Mortgage [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total past due |  | 475
Past due: 60-89 days [Member] | Other Consumer [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total past due | 19 | 59
Past due: 90+ days [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total past due | 8,053 | 7,280
Past due: 90+ days [Member] | Residential Mortgage [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total past due | 5,467 | 5,093
Past due: 90+ days [Member] | Non-Residential Mortgage [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total past due | 1,977 | 1,376
Past due: 90+ days [Member] | Commercial Business [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total past due | 336 | 513
Past due: 90+ days [Member] | Other Consumer [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total past due | 24 | 60
Home Equity Loans [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current | 97,539 | 90,375
Total past due | 249 | 386
Loans and Leases Receivable, Gross | 97,788 | 90,761
Home Equity Loans [Member] | Past due: 30-59 days [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total past due |  | 104
Home Equity Loans [Member] | Past due: 60-89 days [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total past due |  | 44
Home Equity Loans [Member] | Past due: 90+ days [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Total past due | $ 249 | $ 238

X
- Definition Financing receivables that are current. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953401-111524 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Recorded Investment in financing receivables that are past due at the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953401-111524 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentPastDue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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_FinancingReceivableRecordedInvestmentPastDueLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522 + Details
Name: | us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ResidentialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=krny_NonResidentialMortgageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=krny_ConstructionReportablePortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=srt_MultifamilyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivables30To59DaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivables60To89DaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_HomeEquityLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |