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SHAREHOLDERS' EQUITY (Tables) | 12 Months Ended
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Sep. 30, 2015
SHAREHOLDERS' EQUITY |
Schedule of components of accumulated other comprehensive income (loss) |
|  | September 30, |
|  | 2015 |  | 2014 |  | 2013 |
|  | (in thousands) |
Pre-tax amounts: |  |  |  |  |  |  |  |  |  |
Unrealized appreciation on securities |  | $ | 27,021 |  | $ | 157,838 |  | $ | 237,214 |
Unrealized actuarial loss |  |  | (30,144 | ) |  | (23,405 | ) |  | (19,210 | )
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  | $ | (3,123 | ) | $ | 134,433 |  | $ | 218,004 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
After-tax amounts: |  |  |  |  |  |  |  |  |  |
Unrealized appreciation on securities |  | $ | 17,201 |  | $ | 97,418 |  | $ | 144,161 |
Unrealized actuarial loss |  |  | (18,578 | ) |  | (14,292 | ) |  | (11,631 | )
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  | $ | (1,377 | ) | $ | 83,126 |  | $ | 132,530 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Summary of the changes in accumulated other comprehensive income (loss), net of tax, by component |
|  | Unrealized Appreciation (Depreciation) on Available-for-sale Securities |  | Defined Benefit Pension Plan |  | Total |
|  | (in thousands) |
Balance September 30, 2014 |  | $ | 97,418 |  | $ | (14,292 | ) | $ | 83,126 |
Other comprehensive loss before reclassifications |  |  | (80,217 | ) |  | — |  |  | (80,217 | )
Amounts reclassified from accumulated other comprehensive loss |  |  | — |  |  | (4,286 | ) |  | (4,286 | )
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net current-period other comprehensive loss |  |  | (80,217 | ) |  | (4,286 | ) |  | (84,503 | )
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Balance September 30, 2015 |  | $ | 17,201 |  | $ | (18,578 | ) | $ | (1,377 | )
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Schedule of accumulated other comprehensive income (loss) components which were reclassified to the Consolidated Statement of Income |
|  | Amount Reclassified from Accumulated Other Comprehensive Income (Loss) |  |
|  | Affected line item in the Consolidated Statement of Income
Details about Accumulated Other Comprehensive Income (Loss) Components |  | 2015 |  | 2014
|  | (in thousands) |  |
Unrealized gains on available-for-sale securities |  | $ | — |  | $ | (45,234 | ) | Gain on sale of investment securities
|  |  | — |  |  | 17,497 |  | Income tax provision
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  | $ | — |  | $ | (27,737 | ) | Net of tax
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Defined Benefit Pension Items |  | $ | (6,738 | ) | $ | (4,196 | ) | General and administrative
Amortization of net actuarial loss |  |  | 2,452 |  |  | 1,535 |  | Income tax provision
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
|  | $ | (4,286 | ) | $ | (2,661 | ) | Net of tax
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total reclassifications for the period |  | $ | (4,286 | ) | $ | (30,398 | ) |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669686-108580 + Details
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- Definition Tabular disclosure of components of comprehensive income (loss). Includes, but is not limited to, foreign currency translation adjustments, foreign currency transactions designated as economic hedges of a net investment in foreign entity, gain (loss) and prior service cost (credit) for pension plans and other postretirement benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e526-108580 + Details
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