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INCOME TAXES (Tables) | 12 Months Ended
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Dec. 31, 2016
Income Tax Disclosure [Abstract] |
Schedule of Components of Provision for Income Tax Expense | The components of the Company’s provision for income taxes for the years ended December 31, 2016, 2015, and 2014 were, as follows:
(In thousands) |  | 2016 |  | 2015 |  | 2014
Current: |  |  |  |  |  |  |  |  |
Federal tax expense |  | $ | 6,758 |  |  | $ | 4,696 |  |  | $ | 294 |
State tax expense |  | 1,101 |  |  | (1,631 | ) |  | 305 |
Total current expense |  | 7,859 |  |  | 3,065 |  |  | 599 |
Deferred: |  |  |  |  |  |  |  |  |
Federal tax expense |  | 9,438 |  |  | 2,023 |  |  | 8,685 |
State tax expense |  | 1,591 |  |  | (24 | ) |  | 2,509 |
Total deferred tax expense |  | 11,029 |  |  | 1,999 |  |  | 11,194 |
Change in valuation allowance |  | (104 | ) |  | — |  |  | (30 | )
Total income tax expense |  | $ | 18,784 |  |  | $ | 5,064 |  |  | $ | 11,763 |
Schedule of Reconciliation of the Statutory Federal Income Tax Rate to Effective Tax Rate | The following is a reconciliation of the statutory federal income tax rate to the Company’s effective tax rate for the years ended December 31, 2016, 2015, and 2014:
|  | 2016 |  | 2015 |  | 2014
(In thousands, except rates) |  | Amount |  | Rate |  | Amount |  | Rate |  | Amount |  | Rate
Statutory tax rate |  | $ | 27,108 |  |  | 35.0 | % |  | $ | 19,104 |  |  | 35.0 | % |  | $ | 15,928 |  |  | 35.0 | %
Increase (decrease) resulting from: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
State taxes, net of federal tax benefit |  | 1,675 |  |  | 2.2 |  |  | (974 | ) |  | (1.8 | ) |  | 1,810 |  |  | 4.0 |
Tax exempt income - investments, net |  | (3,849 | ) |  | (5.0 | ) |  | (3,463 | ) |  | (6.3 | ) |  | (2,796 | ) |  | (6.1 | )
Bank-owned life insurance |  | (1,364 | ) |  | (1.8 | ) |  | (1,284 | ) |  | (2.4 | ) |  | (1,070 | ) |  | (2.4 | )
Disallowed merger costs |  | 542 |  |  | 0.7 |  |  | 422 |  |  | 0.8 |  |  | 206 |  |  | 0.5 |
Non-deductible goodwill on disposal operations sale |  | — |  |  | — |  |  | 313 |  |  | 0.6 |  |  | — |  |  | — |
Tax credits, net of basis reduction |  | (6,225 | ) |  | (8.0 | ) |  | (8,308 | ) |  | (15.2 | ) |  | (1,658 | ) |  | (3.6 | )
Change in valuation allowance |  | 125 |  |  | 0.2 |  |  | — |  |  | — |  |  | — |  |  | — |
Other, net |  | 772 |  |  | 1.0 |  |  | (746 | ) |  | (1.4 | ) |  | (657 | ) |  | (1.5 | )
Effective tax rate |  | $ | 18,784 |  |  | 24.3 | % |  | $ | 5,064 |  |  | 9.3 | % |  | $ | 11,763 |  |  | 25.9 | %
Schedule of Components of Deferred Tax Assets and Liabilities | As of December 31, 2016 and 2015, significant components of the Company’s deferred tax asset and liabilities were, as follows:
(In thousands) |  | 2016 |  | 2015
Deferred tax assets: |  |  |  |  |  |
Allowance for loan losses |  | $ | 17,747 |  |  | $ | 16,303 |
Tax credit carryforwards |  | 4,100 |  |  | 7,295 |
Unrealized capital loss on tax credit investments |  | 6,999 |  |  | 2,892 |
Net unrealized loss on swaps, securities available for sale, and pension in OCI |  | — |  |  | 2,371 |
Employee benefit plans |  | 7,813 |  |  | 8,776 |
Purchase accounting adjustments |  | 23,520 |  |  | 10,755 |
Net operating loss and capital loss carryforwards |  | 2,643 |  |  | 3,317 |
Other |  | 4,997 |  |  | 2,527 |
Deferred tax assets, net before valuation allowances |  | 67,819 |  |  | 54,236 |
Valuation allowance |  | (125 | ) |  | (229 | )
Deferred tax assets, net of valuation allowances |  | $ | 67,694 |  |  | $ | 54,007 |
Deferred tax liabilities: |  |  |  |  |  |
Net unrealized gain on swaps, securities available for sale, and pension in OCI |  | $ | (5,884 | ) |  | $ | — |
Premises and equipment |  | (2,519 | ) |  | (2,577 | )
Loan servicing rights |  | (4,546 | ) |  | — |
Intangible amortization |  | (11,543 | ) |  | (8,904 | )
Other |  | (2,074 | ) |  | — |
Deferred tax liabilities |  | $ | (26,566 | ) |  | $ | (11,481 | )
Deferred tax assets, net |  | $ | 41,128 |  |  | $ | 42,526 |
Schedule of Components of the Valuation Allowance on Deferred Tax Asset | The components of the Company’s valuation allowance on its deferred tax asset, net as of December 31, 2016 and 2015 were, as follows:
(in thousands) |  | 2016 |  | 2015
State tax basis difference, net of Federal tax benefit (of 35%) |  | $ | (125 | ) |  | $ | (229 | )
Valuation allowances |  | $ | (125 | ) |  | $ | (229 | )
Schedule of Changes in Unrecognized Tax Benefits | The following table presents changes in unrecognized tax benefits for the years ended December 31, 2016, 2015, and 2014:
(In thousands) |  | 2016 |  | 2015 |  | 2014
Unrecognized tax benefits at January 1 |  | $ | 307 |  |  | $ | 553 |  |  | $ | 477 |
Increase in gross amounts of tax positions related to prior years |  | 270 |  |  | — |  |  | 55 |
Increase in gross amounts of tax positions related to current year |  | — |  |  | — |  |  | 93 |
Decrease due to lapse in statute of limitations |  | (117 | ) |  | (246 | ) |  | (72 | )
Unrecognized tax benefits at December 31 |  | $ | 460 |  |  | $ | 307 |  |  | $ | 553 |

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