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EMPLOYEE BENEFIT PLANS (Tables)
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12 Months Ended |
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Dec. 31, 2014
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| Schedule of Amounts Recognized in Balance Sheet and Income Statement [Table Text Block] |
The following tables set forth information concerning amounts recognized in First Financial's Consolidated Balance Sheets and Consolidated Statements of Income: | | | | | | | | | | | | December 31, | (Dollars in thousands) | | 2014 | | 2013 | Change in benefit obligation | | | | | Benefit obligation at beginning of year | | $ | 55,591 |
| | $ | 67,678 |
| Service cost | | 4,119 |
| | 3,705 |
| Interest cost | | 2,388 |
| | 2,319 |
| Amendments | | 0 |
| | 124 |
| Actuarial gain (loss) | | 6,025 |
| | (6,745 | ) | Benefits paid, excluding settlement | | (8,343 | ) | | (1,111 | ) | Settlements | | 0 |
| | (10,379 | ) | Benefit obligation at end of year | | 59,780 |
| | 55,591 |
| | | | | | Change in plan assets | | | | | Fair value of plan assets at beginning of year | | 131,647 |
| | 123,716 |
| Actual return on plan assets | | 10,022 |
| | 19,421 |
| Employer contribution | | 0 |
| | 0 |
| Benefits paid, excluding settlement | | (8,343 | ) | | (1,111 | ) | Settlements | | 0 |
| | (10,379 | ) | Fair value of plan assets at end of year | | 133,326 |
| | 131,647 |
| | | | | | Amounts recognized in the Consolidated Balance Sheets | | | | | Assets | | 73,546 |
| | 76,056 |
| Liabilities | | 0 |
| | 0 |
| Net amount recognized | | $ | 73,546 |
| | $ | 76,056 |
| | | | | | Amounts recognized in accumulated other comprehensive income (loss) | | | | | Net actuarial loss | | $ | 31,644 |
| | $ | 28,411 |
| Net prior service cost | | (3,159 | ) | | (3,573 | ) | Deferred tax assets | | (10,581 | ) | | (9,273 | ) | Net amount recognized | | $ | 17,904 |
| | $ | 15,565 |
| | | | | | Change in accumulated other comprehensive income (loss) | | $ | 2,339 |
| | $ | (15,773 | ) | | | | | | Accumulated benefit obligation | | $ | 59,063 |
| | $ | 53,664 |
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| Schedule of Components of Net Periodic Benefit Cost [Table Text Block] |
| | | | | | | | | | | | | | Components of net periodic benefit cost | | | | | | | | | December 31, | (Dollars in thousands) | | 2014 | | 2013 | | 2012 | Service cost | | $ | 4,119 |
| | $ | 3,705 |
| | $ | 3,483 |
| Interest cost | | 2,388 |
| | 2,319 |
| | 2,550 |
| Expected return on assets | | (9,055 | ) | | (8,988 | ) | | (9,055 | ) | Amortization of prior service cost | | (413 | ) | | (423 | ) | | (423 | ) | Recognized net actuarial loss | | 1,824 |
| | 2,709 |
| | 2,964 |
| Settlement charges | | 0 |
| | 6,174 |
| | 0 |
| Net periodic benefit (income) cost | | (1,137 | ) | | 5,496 |
| | (481 | ) | | | | | | | | Other changes recognized in accumulated other comprehensive income | | | | | Net actuarial (gain) loss | | 5,058 |
| | (17,178 | ) | | (1,954 | ) | Prior service cost | | 0 |
| | 124 |
| | 0 |
| Amortization of prior service cost | | 413 |
| | 423 |
| | 423 |
| Amortization of gain | | (1,824 | ) | | (2,709 | ) | | (2,964 | ) | Settlement charges | | 0 |
| | (6,174 | ) | | 0 |
| Total recognized in accumulated other comprehensive income | | 3,647 |
| | (25,514 | ) | | (4,495 | ) | Total recognized in net periodic benefit cost and accumulated other comprehensive income | | $ | 2,510 |
| | $ | (20,018 | ) | | $ | (4,976 | ) | | | | | | | | Amount expected to be recognized in net periodic pension expense in the coming year | | | | | Amortization of loss | | $ | 1,780 |
| | $ | 1,926 |
| | $ | 3,248 |
| Amortization of prior service credit | | (413 | ) | | (413 | ) | | (423 | ) |
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| Schedule of Assumptions Used [Table Text Block] |
| | | | | | | | Weighted-average assumptions to determine | | | | | | | December 31, | | | 2014 | | 2013 | Benefit obligations | | | | | Discount rate | | 3.76 | % | | 4.62 | % | Rate of compensation increase | | 3.50 | % | | 3.50 | % | | | | | | Net periodic benefit cost | | | | | Discount rate | | 4.62 | % | | 3.73 | % | Expected return on plan assets | | 7.50 | % | | 7.50 | % | Rate of compensation increase | | 3.50 | % | | 3.50 | % |
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| Schedule of Changes in Fair Value of Plan Assets [Table Text Block] |
The fair value of the plan assets as of December 31, 2014 by asset category is shown in the table that follows: | | | | | | | | | | | | | | | | | | | | Fair Value Measurements | (Dollars in thousands) | | Total | | Quoted Prices in Active Markets for Identical Assets (Level 1) | | Significant Observable Inputs (Level 2) | | Significant Unobservable Inputs (Level 3) | Asset Category | | | | | | | | | Cash | | $ | 172 |
| | $ | 172 |
| | $ | 0 |
| | $ | 0 |
| Fixed income mutual funds | | 49,938 |
| | 49,938 |
| | 0 |
| | 0 |
| Equity mutual funds | | 83,216 |
| | 83,216 |
| | 0 |
| | 0 |
| Total | | $ | 133,326 |
| | $ | 133,326 |
| | $ | 0 |
| | $ | 0 |
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The fair value of the plan assets as of December 31, 2013 by asset category is shown below. | | | | | | | | | | | | | | | | | | | | Fair Value Measurements | (Dollars in thousands) | | Total | | Quoted Prices in Active Markets for Identical Assets (Level 1) | | Significant Observable Inputs (Level 2) | | Significant Unobservable Inputs (Level 3) | Asset Category | | | | | | | | | Cash | | $ | 126 |
| | $ | 126 |
| | $ | 0 |
| | $ | 0 |
| Fixed income mutual funds | | 50,277 |
| | 50,277 |
| | 0 |
| | 0 |
| Equity mutual funds | | 81,244 |
| | 81,244 |
| | 0 |
| | 0 |
| Total | | $ | 131,647 |
| | $ | 131,647 |
| | $ | 0 |
| | $ | 0 |
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| Schedule of Expected Benefit Payments [Table Text Block] |
The following benefit payments, which reflect expected future service, as appropriate, are expected to be paid: | | | | | | (Dollars in thousands) | | Retirement Benefits | 2015 | | $ | 4,436 |
| 2016 | | 5,946 |
| 2017 | | 4,433 |
| 2018 | | 5,089 |
| 2019 | | 4,442 |
| Thereafter | | 26,926 |
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