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8. Income Taxes (Details 2) - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | ---
Deferred tax assets: |  |
Allowance for loan losses | $ 3,513 | $ 4,134
Accrued retirement expense | 1,574 | 1,529
Other real estate | 33 | 206
Federal credit carryforward | 0 | 342
State credit carryforward | 0 | 327
Restricted stock | 417 | 243
Accrued bonuses | 238 | 224
Interest income on nonaccrual loans | 88 | 56
Other than temporary impairment | 374 | 186
Other | 16 | 152
Total gross deferred tax assets | 6,253 | 7,399
Deferred tax liabilities: |  |
Deferred loan fees | 588 | 433
Accumulated depreciation | 172 | 728
Prepaid expenses | 59 | 101
Other | 70 | 100
Unrealized gain on available for sale securities | 3,308 | 3,479
Total gross deferred tax liabilities | 4,197 | 4,841
Net deferred tax asset | $ 2,056 | $ 2,558

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