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Repurchase Agreements Repurchase Agreements (Tables) | 6 Months Ended
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Jun. 30, 2017
Repurchase Agreements [Abstract] |
Schedule of Underlying Assets of Repurchase Agreements when Amount of Repurchase Agreements Exceeds 10 Percent of Assets [Table Text Block] |
| June 30, 2017
| Remaining Contractual Maturity of the Agreements
| Overnight and Continuous |  | Total
| (Dollars in thousands)
Sources of collateral |
U.S. government agency securities | $ | 19,326 |  |  | $ | 19,326 |
Agency mortgage-backed securities | 63,364 |  |  | 63,364 |
Agency collateralized mortgage obligations | 76,681 |  |  | 76,681 |
Total borrowings | $ | 159,371 |  |  | $ | 159,371 |
| December 31, 2016
| Remaining Contractual Maturity of the Agreements
| Overnight and Continuous |  | Total
| (Dollars in thousands)
Sources of Collateral |
U.S. government agency securities | $ | 20,233 |  |  | $ | 20,233 |
Agency mortgage-backed securities | 79,079 |  |  | 79,079 |
Agency collateralized mortgage obligations | 77,601 |  |  | 77,601 |
Total borrowings | $ | 176,913 |  |  | $ | 176,913 |

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- Definition Repurchase Agreements [Abstract] + References No definition available. + Details
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- Definition The entire disclosure for repurchase agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(m)(1)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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