Statement [Line Items] | Period [Axis] |
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2016-01-01 - 2016-12-31 |
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Notes Tables | |
Schedule of Net Funded Status [Table Text Block] | | | | | | | | | | | | | | | | | | | | | CHANGE IN BENEFIT OBLIGATION: | | | | | | | | | | | | | | | | | Benefit obligation at beginning of year | | $ | 722 | | | $ | 1,085 | | | $ | 1,539 | | | $ | 1,378 | | | | | 0 | | | | 0 | | | | 37 | | | | 38 | | | | | 26 | | | | 36 | | | | 62 | | | | 57 | | Plan participants' contributions | | | 0 | | | | 0 | | | | 215 | | | | 203 | | | | | 3 | | | | (46 | ) | | | (30 | ) | | | 120 | | | | | (38 | ) | | | (16 | ) | | | (268 | ) | | | (257 | ) | Settlement of plan obligation | | | 0 | | | | (337 | ) | | | 0 | | | | 0 | | Benefit obligation at end of year | | $ | 713 | | | $ | 722 | | | $ | 1,555 | | | $ | 1,539 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fair value of plan assets at beginning of year | | $ | 839 | | | $ | 1,208 | | | $ | 0 | | | $ | 0 | | Actual return on plan assets | | | 45 | | | | (16 | ) | | | 0 | | | | 0 | | | | | 0 | | | | 0 | | | | 53 | | | | 54 | | Plan participants' contributions | | | 0 | | | | 0 | | | | 215 | | | | 203 | | | | | (38 | ) | | | (16 | ) | | | (268 | ) | | | (257 | ) | Settlement of plan obligation | | | 0 | | | | (337 | ) | | | 0 | | | | 0 | | Fair value of plan assets at end of year | | $ | 846 | | | $ | 839 | | | $ | 0 | | | $ | 0 | | | | | | | | | | | | | | | | | | | Funded status at end of year | | $ | 133 | | | $ | 117 | | | $ | (1,555 | ) | | $ | (1,539 | ) | |
Schedule of Amounts Recognized in Balance Sheet [Table Text Block] | | | | | | | | | | | | | | | | | | | | | | | $ | 133 | | | $ | 117 | | | | | | | | | | Accrued interest and other liabilities | | | | | | | | | | $ | 1,555 | | | $ | 1,539 | | |
Schedule of Amounts Recognized in Other Comprehensive Income (Loss) [Table Text Block] | | | | | | | | | | | | | | | | | | | | | | | $ | 0 | | | $ | 0 | | | $ | (340 | ) | | $ | (371 | ) | | | | 161 | | | | 186 | | | | 101 | | | | 131 | | | | $ | 161 | | | $ | 186 | | | $ | (239 | ) | | $ | (240 | ) | |
Schedule of Defined Benefit Plans Disclosures [Table Text Block] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | $ | 0 | | | $ | 0 | | | $ | 0 | | | $ | 37 | | | $ | 38 | | | $ | 34 | | | | | 26 | | | | 36 | | | | 73 | | | | 62 | | | | 57 | | | | 57 | | Expected return on plan assets | | | (26 | ) | | | (45 | ) | | | (88 | ) | | | 0 | | | | 0 | | | | 0 | | Amortization of prior service cost | | | 0 | | | | 0 | | | | 0 | | | | (31 | ) | | | (31 | ) | | | (31 | ) | Recognized net actuarial loss | | | 9 | | | | 11 | | | | 19 | | | | 0 | | | | 0 | | | | 0 | | | | | 0 | | | | 87 | | | | 196 | | | | 0 | | | | 0 | | | | 0 | | Total net periodic benefit cost | | $ | 9 | | | $ | 89 | | | $ | 200 | | | $ | 68 | | | $ | 64 | | | $ | 60 | | |
Schedule of Assumptions Used [Table Text Block] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 4.30 | % | | | 3.75 | % | | | 4.50 | % | | | 4.25 | % | | | 4.00 | % | | | 4.00 | % | Expected return on plan assets | | | 5.00 | % | | | 5.31 | % | | | 5.31 | % | | | N/A | | | | N/A | | | | N/A | | Rate of compensation increase | | | N/A | | | | N/A | | | | N/A | | | | N/A | | | | N/A | | | | N/A | | | | | | | | | | | | | | | | | | | | | | | | | 4.05 | % | | | 4.30 | % | | | 4.25 | % | | | 4.25 | % | Rate of compensation increase | | | N/A | | | | N/A | | | | N/A | | | | N/A | | |
Schedule of Expected Benefit Payments [Table Text Block] | | | | | | | | | | $ | 222 | | | $ | 99 | | | | | 15 | | | | 103 | | | | | 39 | | | | 108 | | | | | 12 | | | | 114 | | | | | 12 | | | | 114 | | 2022-2026 | | | 220 | | | | 563 | | |
Schedule of Allocation of Plan Assets [Table Text Block] | | | | | | | | Mutual funds invested principally in: | | | | | | | | | Cash and cash equivalents | | | 2 | % | | | 2 | % | | | | 38 | % | | | 38 | % | | | | 44 | % | | | 46 | % | | | | 16 | % | | | 14 | % | | | | 100 | % | | | 100 | % | |
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table Text Block] | | | | | | | | | | | | | $ | 578 | | | $ | 606 | | | $ | 412 | | | | | 0 | | | | 0 | | | | 153 | | | | $ | 578 | | | $ | 606 | | | $ | 565 | | |
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Outstanding, December 31, 2015 | | | 62,212 | | | $ | 20.10 | | | | | 35,427 | | | $ | 20.42 | | | | | (30,846 | ) | | $ | 19.90 | | | | | (3,431 | ) | | $ | 20.41 | | Outstanding, December 31, 2016 | | | 63,362 | | | $ | 20.35 | | |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] | | | | | | | | 39 | % | Expected option lives (years) | | | 8 | | | | | 2.85 | % | | | | 4.33 | % | |
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Outstanding, beginning of year | | | 248,486 | | | $ | 18.59 | | | | 316,157 | | | $ | 19.05 | | | | 358,176 | | | $ | 19.03 | | | | | 0 | | | | | | | | 0 | | | | | | | | 39,027 | | | $ | 20.45 | | | | | (35,880 | ) | | $ | 18.86 | | | | (29,557 | ) | | $ | 17.56 | | | | (50,415 | ) | | $ | 17.57 | | | | | (10,569 | ) | | $ | 18.03 | | | | (20,211 | ) | | $ | 19.76 | | | | (16,424 | ) | | $ | 20.03 | | | | | 0 | | | | | | | | (17,903 | ) | | $ | 27.00 | | | | (14,207 | ) | | $ | 26.59 | | | | | 202,037 | | | $ | 18.58 | | | | 248,486 | | | $ | 18.59 | | | | 316,157 | | | $ | 19.05 | | Options exercisable at year-end | | | 202,037 | | | $ | 18.58 | | | | 248,486 | | | $ | 18.59 | | | | 316,157 | | | $ | 19.05 | | Weighted-average fair value of options granted | | | | | | | N/A | | | | | | | | N/A | | | | | | | $ | 5.50 | | Weighted-average fair value of options forfeited | | | | | | $ | 4.04 | | | | | | | $ | 4.86 | | | | | | | $ | 4.89 | | |