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Condensed Financial Statements of Parent Company (Details 2) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Cash flows from operating activities: |  |  |  |  |  |  |  |  |  |  |
Net income | $ 1,222 | $ 1,450 | $ 1,431 | $ 1,642 | $ 1,556 | $ 1,554 | $ 1,337 | $ 1,248 | $ 5,743 | $ 5,695 | $ 5,094
Adjustments to reconcile net income to net cash from operating activities: |  |  |  |  |  |  |  |  |  |  |
Amortization |  |  |  |  |  |  |  |  | 1,497 | 1,493 | 1,636
Net gain on sale of securities |  |  |  |  |  |  |  |  | (261) | (311) | (137)
Changes in other assets |  |  |  |  |  |  |  |  | (503) | (380) | 289
Changes in other liabilities |  |  |  |  |  |  |  |  | (571) | 985 | (667)
Cash flows from investing activities: |  |  |  |  |  |  |  |  |  |  |
Sale of securities |  |  |  |  |  |  |  |  | 25,876 | 24,766 | 8,790
Purchases of securities |  |  |  |  |  |  |  |  | (70,902) | (41,770) | (40,687)
Cash flows from financing activities: |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock |  |  |  |  |  |  |  |  | 206 | 132 | 130
Repurchase of common stock |  |  |  |  |  |  |  |  | (371) | (203) | (192)
Cash dividends paid |  |  |  |  |  |  |  |  | (2,170) | (1,945) | (1,780)
Net change in cash |  |  |  |  |  |  |  |  | (5,463) | (3,829) | 1,445
Beginning cash and cash equivalents |  |  |  | 16,650 |  |  |  | 20,479 | 16,650 | 20,479 | 19,034
Ending cash and cash equivalents | 11,187 |  |  |  | 16,650 |  |  |  | 11,187 | 16,650 | 20,479
Parent Company [Member] |  |  |  |  |  |  |  |  |  |  |
Cash flows from operating activities: |  |  |  |  |  |  |  |  |  |  |
Net income |  |  |  |  |  |  |  |  | 5,743 | 5,695 | 5,094
Adjustments to reconcile net income to net cash from operating activities: |  |  |  |  |  |  |  |  |  |  |
Equity in undistributed net income of subsidiary |  |  |  |  |  |  |  |  | (2,231) | (2,992) | (2,742)
Amortization |  |  |  |  |  |  |  |  | 11 | 3 | 2
Net expense of restricted stock units |  |  |  |  |  |  |  |  | 103 | 48 | 11
Net gain on sale of securities |  |  |  |  |  |  |  |  | 0 | (26) | (1)
Changes in other assets |  |  |  |  |  |  |  |  | 71 | (125) | (1)
Changes in other liabilities |  |  |  |  |  |  |  |  | 4 | (35) | 36
Net cash from operating activities |  |  |  |  |  |  |  |  | 3,701 | 2,568 | 2,399
Cash flows from investing activities: |  |  |  |  |  |  |  |  |  |  |
Sale of securities |  |  |  |  |  |  |  |  |  | 1,184 | 70
Purchases of securities |  |  |  |  |  |  |  |  | (1,029) | (1,565) | (125)
Net cash from investing activities |  |  |  |  |  |  |  |  | (1,029) | (381) | (55)
Cash flows from financing activities: |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock |  |  |  |  |  |  |  |  | 206 | 132 | 130
Repurchase of common stock |  |  |  |  |  |  |  |  | (371) | (203) | (192)
Cash dividends paid |  |  |  |  |  |  |  |  | (2,170) | (1,945) | (1,780)
Net cash from financing activities |  |  |  |  |  |  |  |  | (2,335) | (2,016) | (1,842)
Net change in cash |  |  |  |  |  |  |  |  | 337 | 171 | 502
Beginning cash and cash equivalents |  |  |  | $ 808 |  |  |  | $ 637 | 808 | 637 | 135
Ending cash and cash equivalents | $ 1,145 |  |  |  | $ 808 |  |  |  | $ 1,145 | $ 808 | $ 637

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