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INCOME TAXES - Components of Net Deferred Tax Asset (Detail) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Deferred tax assets:    
Allowance for loan losses $ 4,685 $ 4,725
Deferred compensation 551 545
Retirement plans and salary continuation 1,980 1,942
Share-based compensation 684 583
Off-balance sheet reserves 284 313
Nonaccrual loan interest 474 370
Net unrealized losses on securities available for sale 50 600
Goodwill 85 92
Bonus accrual 132 236
Low-income housing credit carryforward 2,120 1,983
Alternative minimum tax credit carryforward 4,048 4,048
Net operating loss carryforward 2,054 2,520
Other 335 479
Total deferred tax assets 17,482 18,436
Deferred tax liabilities:    
Depreciation 740 771
Mortgage servicing rights 778 777
Purchase accounting adjustments 427 435
Other 194 195
Total deferred tax liabilities 2,139 2,178
Net deferred tax asset $ 15,343 $ 16,258