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Repurchase Agreements Disclosure of Repurchase Agreements (Notes) | 3 Months Ended
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Mar. 31, 2017
Repurchase Agreements [Abstract] |
Repurchase Agreements, Resale Agreements, Securities Borrowed, and Securities Loaned Disclosure [Text Block] | REPURCHASE AGREEMENTS The Company can raise additional liquidity by entering into repurchase agreements at its discretion. These repurchases are accounted for as a secured borrowing transaction for accounting purposes. Payments on such borrowings are interest only until the scheduled repurchase date. In a repurchase agreement the Company is subject to the risk that the purchaser may default at maturity and not return the securities underlying the agreements. In order to minimize this potential risk, the Company enters into repurchase agreements that stipulate that the securities underlying the agreement are not delivered to the customer and instead are held in segregated safekeeping accounts by the Company's safekeeping agents. The table below sets forth information regarding the Company’s repurchase agreements allocated by source of collateral at the dates indicated:
| March 31, 2017
| Remaining Contractual Maturity of the Agreements
| Overnight and Continuous |  | Up to 30 Days |  | 30-90 Days |  | Greater than 90 Days |  | Total
| (Dollars in thousands)
Sources of collateral |
U.S. government agency securities | $ | 16,762 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 16,762 |
Agency mortgage-backed securities | 56,837 |  |  | — |  |  | — |  |  | — |  |  | 56,837 |
Agency collateralized mortgage obligations | 72,173 |  |  | — |  |  | — |  |  | — |  |  | 72,173 |
Total borrowings | $ | 145,772 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 145,772 |
| December 31, 2016
| Remaining Contractual Maturity of the Agreements
| Overnight and Continuous |  | Up to 30 Days |  | 30-90 Days |  | Greater than 90 Days |  | 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 |
Certain counterparties monitor collateral, and may request additional collateral to be posted from time to time. For further information regarding the Company's repurchase agreements see Note 9 - Balance Sheet Offsetting.

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- Definition Repurchase Agreements [Abstract] + References No definition available. + Details
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- Definition The entire disclosure for repurchase agreements (also known as repos), resale agreements (also known as reverse repurchase agreements or reverse repos), securities borrowed transactions, and securities loaned transactions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 50 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=64858031&loc=SL6224234-111729 Reference 2: 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)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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