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Income Taxes (Details 2) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Deferred tax assets: |  |
Bad debts | $ 1,859 | $ 1,885
Deferred loan fees | 49 | 32
Deferred compensation | 322 | 332
Unrealized depreciation on securities available-for-sale, net | 743 | 0
Net operating loss | 1,373 | 290
Tax credits | 147 | 99
Nonaccrual loan interest income | 62 | 71
Share based compensation | 185 | 133
REO writedowns | 195 | 25
Unqualified deferred compensation plan | 54 | 51
Other-than-temporary impairment | 52 | 57
Accrued vacation | 56 | 59
Impairment on land | 48 | 48
Other | 78 | 15
Total deferred tax assets | 5,223 | 3,097
Deferred tax liabilities: |  |
Depreciation | (550) | (641)
Prepaids | (254) | (237)
Mortgage servicing rights | (68) | (26)
Deferred stock dividends | (76) | (65)
Unrealized appreciation on securities available-for-sale, net | 0 | (188)
Purchase accounting | (118) | (100)
Other | (191) | (209)
Total deferred tax liabilities | (1,257) | (1,466)
Valuation allowance | (87) | (80)
Net deferred tax asset | $ 3,879 | $ 1,551

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