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Condensed Parent Only Financial Information Condensed Statements of Cash Flows (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Net Cash Provided by (Used in) Operating Activities |  |  |  |  |  |  |  |  |  |  |
Net income | $ 3,968,000 | $ 2,665,000 | $ 3,723,000 | $ 4,553,000 | $ 4,083,000 | $ 4,381,000 | $ 3,858,000 | $ 4,192,000 | $ 14,909,000 | $ 16,514,000 | $ 14,139,000
Equity in undistributed earnings of consolidated subsidiaries |  |  |  |  |  |  |  |  | (790,000) | (481,000) | (774,000)
Share-based compensation |  |  |  |  |  |  |  |  | 994,000 | 1,063,000 | 887,000
Excess tax benefit from share-based compensation |  |  |  |  |  |  |  |  | (142,000) | 0 | 0
Increase in other liabilities |  |  |  |  |  |  |  |  | 1,367,000 | 1,002,000 | 1,806,000
Other, net |  |  |  |  |  |  |  |  | (3,861,000) | (1,033,000) | (5,448,000)
Net cash provided by operating activities |  |  |  |  |  |  |  |  | 26,162,000 | 23,220,000 | 11,874,000
Net Cash Provided by (Used in) Investing Activities |  |  |  |  |  |  |  |  |  |  |
Net cash used in investing activities |  |  |  |  |  |  |  |  | (44,308,000) | (149,585,000) | (332,749,000)
Net Cash Provided by (Used in) Financing Activities |  |  |  |  |  |  |  |  |  |  |
Net (decrease) increase in short-term borrowed funds |  |  |  |  |  |  |  |  | (1,500,000) | 1,500,000 | 1,000,000
Proceeds from issuance of long-term debt, net of issuance costs |  |  |  |  |  |  |  |  | 0 | 0 | 14,469,000
Repayment of long-term debt |  |  |  |  |  |  |  |  | 0 | 0 | (4,000,000)
Proceeds from issuance of common stock |  |  |  |  |  |  |  |  | 0 | 0 | 16,557,000
Proceeds from exercise of stock options |  |  |  |  |  |  |  |  | 0 | 300,000 | 936,000
Purchase of treasury stock |  |  |  |  |  |  |  |  | (467,000) | (946,000) | (1,795,000)
Excess tax benefit from share-based compensation |  |  |  |  |  |  |  |  | 0 | 267,000 | 584,000
Cash dividends paid |  |  |  |  |  |  |  |  | (4,176,000) | (3,816,000) | (3,396,000)
Net cash (used in) provided by financing activities |  |  |  |  |  |  |  |  | (17,901,000) | 136,692,000 | 342,826,000
Net (decrease) increase in cash and cash equivalents |  |  |  |  |  |  |  |  | (36,047,000) | 10,327,000 | 21,951,000
Cash and cash equivalents at the beginning of the period |  |  |  | 113,564,000 |  |  |  | 103,237,000 | 113,564,000 | 103,237,000 | 81,286,000
Cash and cash equivalents at the end of the period | 77,517,000 |  |  |  | 113,564,000 |  |  |  | 77,517,000 | 113,564,000 | 103,237,000
Parent company |  |  |  |  |  |  |  |  |  |  |
Net Cash Provided by (Used in) Operating Activities |  |  |  |  |  |  |  |  |  |  |
Net income |  |  |  |  |  |  |  |  | 14,909,000 | 16,514,000 | 14,139,000
Equity in undistributed earnings of consolidated subsidiaries |  |  |  |  |  |  |  |  | (18,719,000) | (20,185,000) | (17,185,000)
Share-based compensation |  |  |  |  |  |  |  |  | 994,000 | 448,000 | 416,000
Excess tax benefit from share-based compensation |  |  |  |  |  |  |  |  | (83,000) | 0 | 0
Increase in other liabilities |  |  |  |  |  |  |  |  | 1,198,000 | 2,390,000 | 1,002,000
Other, net |  |  |  |  |  |  |  |  | (3,162,000) | (481,000) | (1,147,000)
Net cash provided by operating activities |  |  |  |  |  |  |  |  | (4,863,000) | (1,314,000) | (2,775,000)
Net Cash Provided by (Used in) Investing Activities |  |  |  |  |  |  |  |  |  |  |
Dividends received from subsidiaries |  |  |  |  |  |  |  |  | 13,534,000 | 7,034,000 | 8,000,000
Capital contributions to subsidiaries |  |  |  |  |  |  |  |  | (3,500,000) | (3,000,000) | (32,980,000)
Net cash used in investing activities |  |  |  |  |  |  |  |  | 10,034,000 | 4,034,000 | (24,980,000)
Net Cash Provided by (Used in) Financing Activities |  |  |  |  |  |  |  |  |  |  |
Net (decrease) increase in short-term borrowed funds |  |  |  |  |  |  |  |  | (1,500,000) | 1,500,000 | 1,000,000
Proceeds from issuance of long-term debt, net of issuance costs |  |  |  |  |  |  |  |  | 0 | 0 | 14,469,000
Repayment of long-term debt |  |  |  |  |  |  |  |  | 0 | 0 | (4,000,000)
Proceeds from issuance of common stock |  |  |  |  |  |  |  |  | 0 | 0 | 16,560,000
Proceeds from exercise of stock options |  |  |  |  |  |  |  |  | 0 | 300,000 | 936,000
Purchase of treasury stock |  |  |  |  |  |  |  |  | (467,000) | (946,000) | (1,795,000)
Excess tax benefit from share-based compensation |  |  |  |  |  |  |  |  | 0 | 162,000 | 305,000
Cash dividends paid |  |  |  |  |  |  |  |  | (4,176,000) | (3,816,000) | (3,396,000)
Net cash (used in) provided by financing activities |  |  |  |  |  |  |  |  | (6,143,000) | (2,800,000) | 24,079,000
Net (decrease) increase in cash and cash equivalents |  |  |  |  |  |  |  |  | (972,000) | (80,000) | (3,676,000)
Cash and cash equivalents at the beginning of the period |  |  |  | $ 1,099,000 |  |  |  | $ 1,179,000 | 1,099,000 | 1,179,000 | 4,855,000
Cash and cash equivalents at the end of the period | $ 127,000 |  |  |  | $ 1,099,000 |  |  |  | $ 127,000 | $ 1,099,000 | $ 1,179,000

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- Definition The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3255-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 + Details
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