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Condensed Parent Only Financial Information Condensed Statements of Cash Flows (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Net Cash Provided by (Used in) Operating Activities |  |  |  |  |  |  |  |  |  |  |
Net income | $ 4,037,000 | $ 2,584,000 | $ 1,886,000 | $ 3,397,000 | $ 3,968,000 | $ 2,665,000 | $ 3,723,000 | $ 4,553,000 | $ 11,905,000 | $ 14,909,000 | $ 16,514,000
Equity in undistributed earnings of consolidated subsidiaries |  |  |  |  |  |  |  |  | (354,000) | (790,000) | (481,000)
Share-based compensation |  |  |  |  |  |  |  |  | 1,078,000 | 994,000 | 1,063,000
Excess tax benefit from share-based compensation |  |  |  |  |  |  |  |  | (66,000) | (142,000) | 0
Net (decrease) increase in other liabilities |  |  |  |  |  |  |  |  | 1,907,000 | 1,367,000 | 1,002,000
Other, net |  |  |  |  |  |  |  |  | (2,857,000) | (3,861,000) | (1,033,000)
Net cash provided by operating activities |  |  |  |  |  |  |  |  | 22,408,000 | 26,162,000 | 23,220,000
Net Cash Provided by (Used in) Investing Activities |  |  |  |  |  |  |  |  |  |  |
Net cash used in investing activities |  |  |  |  |  |  |  |  | (46,353,000) | (44,308,000) | (149,585,000)
Net Cash Provided by (Used in) Financing Activities |  |  |  |  |  |  |  |  |  |  |
Net (decrease) increase in short-term borrowed funds |  |  |  |  |  |  |  |  | (1,000,000) | (1,500,000) | 1,500,000
Proceeds from issuance of subordinated notes payable |  |  |  |  |  |  |  |  | 9,090,000 | 0 | 0
Repayment of subordinated notes payable |  |  |  |  |  |  |  |  | (7,875,000) | 0 | 0
Proceeds from exercise of stock options |  |  |  |  |  |  |  |  | 0 | 0 | 300,000
Purchase of treasury stock |  |  |  |  |  |  |  |  | (323,000) | (467,000) | (946,000)
Excess tax benefit from share-based compensation |  |  |  |  |  |  |  |  | 0 | 0 | 267,000
Cash dividends paid |  |  |  |  |  |  |  |  | (4,538,000) | (4,176,000) | (3,816,000)
Net cash (used in) provided by financing activities |  |  |  |  |  |  |  |  | (1,033,000) | (17,901,000) | 136,692,000
Net (decrease) increase in cash and cash equivalents |  |  |  |  |  |  |  |  | (24,978,000) | (36,047,000) | 10,327,000
Cash and cash equivalents at the beginning of the period |  |  |  | 77,517,000 |  |  |  | 113,564,000 | 77,517,000 | 113,564,000 |
Cash and cash equivalents at the end of the period | 52,539,000 |  |  |  | 77,517,000 |  |  |  | 52,539,000 | 77,517,000 | 113,564,000
Parent company |  |  |  |  |  |  |  |  |  |  |
Net Cash Provided by (Used in) Operating Activities |  |  |  |  |  |  |  |  |  |  |
Net income |  |  |  |  |  |  |  |  | 11,905,000 | 14,909,000 | 16,514,000
Equity in undistributed earnings of consolidated subsidiaries |  |  |  |  |  |  |  |  | (15,086,000) | (18,719,000) | (20,185,000)
Share-based compensation |  |  |  |  |  |  |  |  | 1,078,000 | 994,000 | 448,000
Excess tax benefit from share-based compensation |  |  |  |  |  |  |  |  | (37,000) | (83,000) | 0
Net (decrease) increase in other liabilities |  |  |  |  |  |  |  |  | (4,170,000) | 1,198,000 | 2,390,000
Other, net |  |  |  |  |  |  |  |  | (2,233,000) | (3,162,000) | (481,000)
Net cash provided by operating activities |  |  |  |  |  |  |  |  | (8,543,000) | (4,863,000) | (1,314,000)
Net Cash Provided by (Used in) Investing Activities |  |  |  |  |  |  |  |  |  |  |
Dividends received from subsidiaries |  |  |  |  |  |  |  |  | 14,534,000 | 13,534,000 | 7,034,000
Capital contributions to subsidiaries |  |  |  |  |  |  |  |  | 0 | (3,500,000) | (3,000,000)
Net cash used in investing activities |  |  |  |  |  |  |  |  | 14,534,000 | 10,034,000 | 4,034,000
Net Cash Provided by (Used in) Financing Activities |  |  |  |  |  |  |  |  |  |  |
Net (decrease) increase in short-term borrowed funds |  |  |  |  |  |  |  |  | (1,000,000) | (1,500,000) | 1,500,000
Proceeds from issuance of subordinated notes payable |  |  |  |  |  |  |  |  | 9,090,000 | 0 | 0
Repayment of subordinated notes payable |  |  |  |  |  |  |  |  | (7,875,000) | 0 | 0
Proceeds from exercise of stock options |  |  |  |  |  |  |  |  | 0 | 0 | 300,000
Purchase of treasury stock |  |  |  |  |  |  |  |  | (323,000) | (467,000) | (946,000)
Excess tax benefit from share-based compensation |  |  |  |  |  |  |  |  | 0 | 0 | 162,000
Cash dividends paid |  |  |  |  |  |  |  |  | (4,538,000) | (4,176,000) | (3,816,000)
Net cash (used in) provided by financing activities |  |  |  |  |  |  |  |  | (4,646,000) | (6,143,000) | (2,800,000)
Net (decrease) increase in cash and cash equivalents |  |  |  |  |  |  |  |  | 1,345,000 | (972,000) | (80,000)
Cash and cash equivalents at the beginning of the period |  |  |  | $ 127,000 |  |  |  | $ 1,099,000 | 127,000 | 1,099,000 |
Cash and cash equivalents at the end of the period | $ 1,472,000 |  |  |  | $ 127,000 |  |  |  | $ 1,472,000 | $ 127,000 | $ 1,099,000

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