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Condensed Financial Information of Parent Company (Schedule of Condensed Balance Sheets) (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
--- | --- | --- | --- | ---
Assets |  |  |  |
Cash and due from banks | $ 11,283 | $ 18,794 |  |
Securities available-for-sale, at fair value | 317,767 | 341,935 |  |
Loans, net | 640,498 | 675,376 |  |
Premises and equipment, net | 13,231 | 10,735 |  |
Other assets | 21,363 | 24,474 |  |
Total assets | 1,326,020 | 1,287,387 | 1,319,301 |
Liabilities and Shareholders' Equity |  |  |  |
Accounts and drafts payable | 543,953 | 522,761 |  |
Other liabilities | 9,144 | 26,903 |  |
Total liabilities | 1,135,593 | 1,113,372 |  |
Total shareholders equity | 190,427 | 174,015 | 160,548 | 142,094
Total liabilities and shareholders' equity | 1,326,020 | 1,287,387 |  |
Parent [Member] |  |  |  |
Assets |  |  |  |
Cash and due from banks | 24,519 | 22,709 |  |
Short-term investments | 63,063 | 38,705 |  |
Securities available-for-sale, at fair value | 317,767 | 316,771 |  |
Loans, net | 125,316 | 156,935 |  |
Investments in subsidiary | 76,500 | 67,385 |  |
Premises and equipment, net | 12,276 | 10,436 |  |
Other assets | 120,438 | 106,247 |  |
Total assets | 739,879 | 719,188 |  |
Liabilities and Shareholders' Equity |  |  |  |
Accounts and drafts payable | 543,953 | 522,761 |  |
Other liabilities | 5,521 | 22,214 |  |
Total liabilities | 549,474 | 544,975 |  |
Total shareholders equity | 190,405 | 174,213 |  |
Total liabilities and shareholders' equity | $ 739,879 | $ 719,188 |  |

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