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Loan Quality and Allowance for Loan Losses - Allowance for Loan Losses and Balance of Loans Receivable (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Mar. 31, 2019 | Mar. 31, 2018 | Mar. 31, 2019 | Mar. 31, 2018 | Jun. 30, 2018
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Allowance | $ 33,526 | $ 30,066 | $ 30,865 | $ 29,286 |
Allowance, Loans individually evaluated for impairment | 318 |  | 318 |  | $ 306
Allowance, Loans collectively evaluated for impairment | 32,787 |  | 32,787 |  | 30,559
Allowance | 33,105 | 30,248 | 33,105 | 30,248 |
Loans individually evaluated for impairment | 25,633 |  | 25,633 |  | 22,913
Loans collectively evaluated for impairment | 4,689,543 |  | 4,689,543 |  | 4,544,634
Loans and Leases Receivable, Gross | 4,715,516 |  | 4,715,516 |  | 4,567,915
Loans receivable, unamortized yield adjustments | (55,712) |  | (55,712) |  | (66,567)
Loans receivable | 4,659,804 |  | 4,659,804 |  | 4,501,348
Total charge offs | (260) | (325) | (721) | (1,339) |
Total recoveries | 18 | 84 | 69 | 312 |
Total provision (reversal) for Loan Losses | (179) | 423 | 2,892 | 1,989 |
Residential Mortgage [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Allowance | 2,977 | 2,440 | 2,479 | 2,384 |
Allowance, Loans individually evaluated for impairment | 36 |  | 36 |  | 79
Allowance, Loans collectively evaluated for impairment | 3,079 |  | 3,079 |  | 2,400
Allowance | 3,115 | 2,454 | 3,115 | 2,454 |
Loans individually evaluated for impairment | 13,446 |  | 13,446 |  | 11,931
Loans collectively evaluated for impairment | 1,311,569 |  | 1,311,569 |  | 1,285,423
Loans and Leases Receivable, Gross | 1,325,105 |  | 1,325,105 |  | 1,297,453
Total charge offs |  | (61) | (83) | (471) |
Total recoveries |  |  | 0 | 77 |
Total provision (reversal) for Loan Losses | 138 | 75 | 719 | 464 |
Non-Residential Mortgage [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Allowance | 9,918 | 9,665 | 9,787 | 9,939 |
Allowance, Loans collectively evaluated for impairment | 9,575 |  | 9,575 |  | 9,787
Allowance | 9,575 | 9,885 | 9,575 | 9,885 |
Loans individually evaluated for impairment | 8,956 |  | 8,956 |  | 5,344
Loans collectively evaluated for impairment | 1,240,259 |  | 1,240,259 |  | 1,297,617
Loans and Leases Receivable, Gross | 1,249,215 |  | 1,249,215 |  | 1,302,961
Total charge offs |  | (7) | (54) | (45) |
Total recoveries |  |  | 2 |  |
Total provision (reversal) for Loan Losses | (343) | 227 | (160) | (9) |
Construction [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Allowance | 305 | 246 | 258 | 35 |
Allowance, Loans collectively evaluated for impairment | 149 |  | 149 |  | 258
Allowance | 149 | 253 | 149 | 253 |
Loans collectively evaluated for impairment | 14,377 |  | 14,377 |  | 23,271
Loans and Leases Receivable, Gross | 14,377 |  | 14,377 |  | 23,271
Total charge offs |  |  | 0 |  |
Total recoveries |  |  | 0 |  |
Total provision (reversal) for Loan Losses | (156) | 7 | (109) | 218 |
Commercial Business [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Allowance | 2,514 | 2,706 | 2,552 | 1,709 |
Allowance, Loans individually evaluated for impairment | 282 |  | 282 |  | 227
Allowance, Loans collectively evaluated for impairment | 2,282 |  | 2,282 |  | 2,325
Allowance | 2,564 | 2,686 | 2,564 | 2,686 |
Loans individually evaluated for impairment | 1,625 |  | 1,625 |  | 3,921
Loans collectively evaluated for impairment | 64,601 |  | 64,601 |  | 81,635
Loans and Leases Receivable, Gross | 66,476 |  | 66,476 |  | 85,825
Total charge offs | (184) | (89) | (369) | (95) |
Total recoveries |  | 55 | 0 | 89 |
Total provision (reversal) for Loan Losses | 234 | 14 | 381 | 983 |
Other Consumer [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Allowance | 253 | 643 | 413 | 777 |
Allowance, Loans collectively evaluated for impairment | 201 |  | 201 |  | 413
Allowance | 201 | 527 | 201 | 527 |
Loans collectively evaluated for impairment | 5,984 |  | 5,984 |  | 9,060
Loans and Leases Receivable, Gross | 5,984 |  | 5,984 |  | 9,060
Total charge offs | (76) | (167) | (215) | (727) |
Total recoveries | 18 | 29 | 67 | 81 |
Total provision (reversal) for Loan Losses | 6 | 22 | (64) | 396 |
Multi-Family Mortgage [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Allowance | 17,095 | 13,909 | 14,946 | 13,941 |
Allowance, Loans collectively evaluated for impairment | 17,012 |  | 17,012 |  | 14,946
Allowance | 17,012 | 14,010 | 17,012 | 14,010 |
Loans individually evaluated for impairment | 81 |  | 81 |  | 116
Loans collectively evaluated for impairment | 1,956,490 |  | 1,956,490 |  | 1,758,468
Loans and Leases Receivable, Gross | 1,956,571 |  | 1,956,571 |  | 1,758,584
Total charge offs |  |  | 0 |  |
Total recoveries |  |  | 0 |  |
Total provision (reversal) for Loan Losses | (83) | 101 | 2,066 | 69 |
Receivables Acquired with Deteriorated Credit Quality [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Loans acquired with deteriorated credit quality | 340 |  | 340 |  | 368
Receivables Acquired with Deteriorated Credit Quality [Member] | Residential Mortgage [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Loans acquired with deteriorated credit quality | 90 |  | 90 |  | 99
Receivables Acquired with Deteriorated Credit Quality [Member] | Commercial Business [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Loans acquired with deteriorated credit quality | 250 |  | 250 |  | 269
Home Equity Loans [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |  |  |  |
Allowance | 464 | 457 | 430 | 501 |
Allowance, Loans collectively evaluated for impairment | 489 |  | 489 |  | 430
Allowance | 489 | 433 | 489 | 433 |
Loans individually evaluated for impairment | 1,525 |  | 1,525 |  | 1,601
Loans collectively evaluated for impairment | 96,263 |  | 96,263 |  | 89,160
Loans and Leases Receivable, Gross | 97,788 |  | 97,788 |  | $ 90,761
Total charge offs |  | (1) | 0 | (1) |
Total recoveries |  |  | 0 | 65 |
Total provision (reversal) for Loan Losses | $ 25 | $ (23) | $ 59 | $ (132) |

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- Definition The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for 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 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(d)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b)(1)(ii) -URI http://asc.fasb.org/extlink&oid=82894903&loc=d3e15032-111544 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 6.L.1) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74567-122707 + Details
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