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Repurchase Agreements Disclosure of Repurchase Agreements (Notes) | 6 Months Ended
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Jun. 30, 2018
Disclosure of 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:
| June 30, 2018 |  | December 31, 2017
| (Dollars in thousands)
Sources of collateral |
U.S. government agency securities | $ | 14,149 |  |  | $ | 16,867 |
Agency mortgage-backed securities | 57,546 |  |  | 51,273 |
Agency collateralized mortgage obligations | 70,540 |  |  | 94,539 |
Total customer repurchase agreements (1) | $ | 142,235 |  |  | $ | 162,679 |
(1) All customer repurchase agreements have an overnight and continuous maturity date. For further information regarding the Company's repurchase agreements see Note 9 - Balance Sheet Offsetting.

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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 -URI http://asc.fasb.org/topic&trid=2197590 + Details
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