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INCOME TAXES: (Details 2) - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | ---
Deferred tax assets: |  |
Other than temporary impairment | $ 5,411 | $ 5,417
Net unrealized losses on retirement plans | 12,007 | 16,068
Loan loss provisions | 7,755 | 7,232
Deferred compensation | 6,257 | 6,637
Compensated absences | 917 | 894
Post-retirement benefits | 2,026 | 2,014
Deferred loss on acquisition | 1,177 | 1,377
Other | 2,887 | 2,185
GROSS DEFERRED ASSETS | 38,437 | 41,824
Deferred tax liabilities: |  |
Net unrealized gains on securities available-for-sale | (5,234) | (5,831)
Depreciation | (2,632) | (2,423)
Mortgage servicing rights | (539) | (561)
Pensions | (424) | (2,182)
Intangibles | (2,283) | (1,652)
Other | (2,863) | (2,173)
GROSS DEFERRED LIABILITIES | (13,975) | (14,822)
NET DEFERRED TAX ASSETS (LIABILITIES) | $ 24,462 | $ 27,002

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