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Condensed Financial Information of Parent Company (Schedule of Condensed Balance Sheets) (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | --- | --- | ---
Assets |  |  |  |
Cash and due from banks | $ 15,042 | $ 17,422 |  |
Securities available-for-sale, at fair value | 441,534 | 470,523 |  |
Loans, net | 711,362 | 676,026 |  |
Premises and equipment, net | 22,031 | 21,586 |  |
Other assets | 97,032 | 90,369 |  |
Total assets | 1,695,176 | 1,657,209 | $ 1,504,839 |
Liabilities and Shareholders' Equity |  |  |  |
Accounts and drafts payable | 694,360 | 661,888 |  |
Other liabilities | 49,042 | 38,145 |  |
Total liabilities | 1,465,328 | 1,432,121 |  |
Total shareholders' equity | 229,848 | 225,088 | $ 208,035 | $ 207,378
Total liabilities and shareholders' equity | 1,695,176 | 1,657,209 |  |
Parent [Member] |  |  |  |
Assets |  |  |  |
Cash and due from banks | 35,735 | 56,462 |  |
Short-term investments | 35,201 | 48,324 |  |
Securities available-for-sale, at fair value | 441,534 | 470,523 |  |
Loans, net | 20,188 | 12,239 |  |
Investments in subsidiaries | 130,231 | 113,681 |  |
Premises and equipment, net | 21,358 | 20,927 |  |
Other assets | 278,151 | 199,865 |  |
Total assets | 962,398 | 922,021 |  |
Liabilities and Shareholders' Equity |  |  |  |
Accounts and drafts payable | 693,026 | 661,342 |  |
Other liabilities | 39,362 | 35,533 |  |
Total liabilities | 732,388 | 696,875 |  |
Total shareholders' equity | 230,010 | 225,146 |  |
Total liabilities and shareholders' equity | $ 962,398 | $ 922,021 |  |

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