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Securities Held to Maturity (Tables) | 9 Months Ended
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Mar. 31, 2019
Schedule Of Held To Maturity Securities [Line Items] |
Amortized Cost, Gross Unrecognized Gains and Losses and Fair Values of Securities |
| March 31, 2019 |
| Amortized Cost |  |  | Gross Unrecognized Gains |  |  | Gross Unrecognized Losses |  |  | Fair Value |
| (In Thousands) |
Investment securities held to maturity: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Obligations of state and political subdivisions | $ | 107,375 |  |  | $ | 906 |  |  | $ | 180 |  |  | $ | 108,101 |
Subordinated debt |  | 63,107 |  |  |  | 152 |  |  |  | 191 |  |  |  | 63,068 |
Total debt securities |  | 170,482 |  |  |  | 1,058 |  |  |  | 371 |  |  |  | 171,169 |
Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collateralized mortgage obligations |  | 49,368 |  |  |  | 158 |  |  |  | 298 |  |  |  | 49,228 |
Residential pass-through securities |  | 174,338 |  |  |  | 848 |  |  |  | 1,625 |  |  |  | 173,561 |
Commercial pass-through securities |  | 198,011 |  |  |  | 1,030 |  |  |  | 185 |  |  |  | 198,856 |
Total mortgage-backed securities |  | 421,717 |  |  |  | 2,036 |  |  |  | 2,108 |  |  |  | 421,645 |
Total securities held to maturity | $ | 592,199 |  |  | $ | 3,094 |  |  | $ | 2,479 |  |  | $ | 592,814 |
| June 30, 2018 |
| Amortized Cost |  |  | Gross Unrecognized Gains |  |  | Gross Unrecognized Losses |  |  | Fair Value |
| (In Thousands) |
Securities held to maturity: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Obligations of state and political subdivisions | $ | 109,483 |  |  | $ | 79 |  |  | $ | 1,865 |  |  | $ | 107,697 |
Subordinated debt |  | 46,294 |  |  |  | 37 |  |  |  | 284 |  |  |  | 46,047 |
Total debt securities |  | 155,777 |  |  |  | 116 |  |  |  | 2,149 |  |  |  | 153,744 |
Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Collateralized mortgage obligations: |  | 56,886 |  |  |  | 6 |  |  |  | 1,348 |  |  |  | 55,544 |
Residential pass-through securities: |  | 200,622 |  |  |  | 19 |  |  |  | 4,005 |  |  |  | 196,636 |
Commercial pass-through securities: |  | 176,445 |  |  |  | - |  |  |  | 2,870 |  |  |  | 173,575 |
Total mortgage-backed securities |  | 433,953 |  |  |  | 25 |  |  |  | 8,223 |  |  |  | 425,755 |
Total securities held to maturity | $ | 589,730 |  |  | $ | 141 |  |  | $ | 10,372 |  |  | $ | 579,499 |
Securities Held to Maturity Pledged for Borrowings, Public Fund and Others | Securities held to maturity pledged for borrowings at the FHLB and other institutions, and securities pledged for public funds and other purposes, were as follows as of the dates presented below:
|  |  |  |  | March 31, |  |  | June 30, |
|  |  |  |  | 2019 |  |  | 2018 |
|  |  |  |  | (In Thousands) |
Held to maturity securities pledged: |  |  |  |  |  |  |  |  |  |  |
Pledged for borrowings at the FHLB of New York |  |  |  |  | $ | 135,046 |  |  | $ | 142,646 |
Pledged to secure public funds on deposit |  |  |  |  |  | 7,071 |  |  |  | 7,604 |
Pledged for potential borrowings at the Federal Reserve Bank of New York |  |  |  |  |  | 104,744 |  |  |  | 107,520 |
Pledged for collateral for depositor sweep accounts |  |  |  |  |  | 27,811 |  |  |  | 25,976 |
Total held to maturity securities pledged |  |  |  |  | $ | 274,672 |  |  | $ | 283,746 |
Securities Held to Maturity [Member] |
Schedule Of Held To Maturity Securities [Line Items] |
Stratification by Contractual Maturity of Securities |
| March 31, 2019 |
| Amortized Cost |  |  | Fair Value |
| (In Thousands) |
Debt securities held to maturity: |  |  |  |  |  |  |
Due in one year or less | $ | 9,692 |  |  | $ | 9,675 |
Due after one year through five years |  | 31,293 |  |  |  | 31,286 |
Due after five years through ten years |  | 126,502 |  |  |  | 127,160 |
Due after ten years |  | 2,995 |  |  |  | 3,048 |
Total | $ | 170,482 |  |  | $ | 171,169 |

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- Definition Tabular disclosure of information about investment in debt security measured at amortized cost (held-to-maturity). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27232-111563 + Details
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