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Securities (Tables) | 6 Months Ended
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Jun. 30, 2016
Investments debt and equity securities [Abstract] |
Available-for-sale Securities [Table Text Block] |
|  |  | 1 year | 1 to 5 | 5 to 10 | After 10 | Fair |  | Gross Unrealized |  | Amortized
(Dollars in thousands) |  | or less | years | years | years | Value |  | Gains | Losses |  | Cost
June 30, 2016 |  |  |  |  |  |  |  |  |  |  |  |
Agency obligations (a) | $ | 3,113 | 23,136 | 16,390 | — | 42,639 |  | 943 | — |  | $ | 41,696
Agency RMBS (a) |  | — | 1,265 | 20,223 | 81,391 | 102,879 |  | 2,132 | — |  |  | 100,747
State and political subdivisions |  | — | 2,004 | 11,440 | 58,040 | 71,484 |  | 3,759 | — |  |  | 67,725
| Total available-for-sale | $ | 3,113 | 26,405 | 48,053 | 139,431 | 217,002 |  | 6,834 | — |  | $ | 210,168
December 31, 2015 |  |  |  |  |  |  |  |  |  |  |
Agency obligations (a) | $ | 5,000 | 25,852 | 19,463 | 9,770 | 60,085 |  | 384 | 518 |  | $ | 60,219
Agency RMBS (a) |  | — | 1,623 | 13,511 | 95,820 | 110,954 |  | 968 | 780 |  |  | 110,766
State and political subdivisions |  | — | 497 | 12,094 | 58,057 | 70,648 |  | 3,022 | 7 |  |  | 67,633
| Total available-for-sale | $ | 5,000 | 27,972 | 45,068 | 163,647 | 241,687 |  | 4,374 | 1,305 |  | $ | 238,618
(a) Includes securities issued by U.S. government agencies or government sponsored entities.
Available-for-sale Securities, Continuous Unrealized Loss Position [Table Text Block] |
|  |  |  | Less than 12 Months |  |  | 12 Months or Longer |  |  | Total
|  |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized
(Dollars in thousands) |  | Value |  |  | Losses |  |  | Value |  |  | Losses |  |  | Value |  |  | Losses
December 31, 2015: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Agency obligations | $ | 8,157 |  |  | 2 |  |  | 24,444 |  |  | 516 |  | $ | 32,601 |  |  | 518
Agency RMBS |  | 42,345 |  |  | 367 |  |  | 18,184 |  |  | 413 |  |  | 60,529 |  |  | 780
State and political subdivisions |  | 267 |  |  | 1 |  |  | 969 |  |  | 6 |  |  | 1,236 |  |  | 7
|  | Total | $ | 50,769 |  |  | 370 |  |  | 43,597 |  |  | 935 |  | $ | 94,366 |  |  | 1,305
Schedule of Realized Gain (Loss) [Table Text Block] |
Realized Gains and Losses
The following table presents the gross realized gains and losses on sales of securities. |  |
|  |  |  |  | Quarter ended June 30, |  |  | Six Months Ended June 30,
(Dollars in thousands) |  |  | 2016 |  |  | 2015 |  |  | 2016 |  |  | 2015
Gross realized gains |  | $ | — |  |  | — |  |  | — |  | $ | 3
| Realized gains, net |  | $ | — |  |  | — |  |  | — |  | $ | 3

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- Definition Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62557-112803 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27337-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27198-111563 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62586-112803 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27357-111563 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 + Details
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