Principles of Consolidation	6 Months Ended
Dec. 31, 2018
Accounting Policies [Abstract]
Principles of Consolidation	1. PRINCIPLES OF CONSOLIDATION The unaudited consolidated financial statements include the accounts of Kearny Financial Corp. (the “Company”), its wholly-owned subsidiary, Kearny Bank (the “Bank”) and the Bank’s wholly-owned subsidiaries, CJB Investment Corp. and KFS Financial Services, Inc. and its wholly-owned subsidiary, KFS Insurance Services, Inc. The Company conducts its business principally through the Bank. Management prepared the unaudited consolidated financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”), including the elimination of all significant inter-company accounts and transactions during consolidation.

The entire disclosure for organization, consolidation and basis of presentation of financial statements disclosure.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-URI http://asc.fasb.org/topic&trid=2122149

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-URI http://asc.fasb.org/topic&trid=2197479

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