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Condensed Financial Statements of Parent Company (Details 2) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Cash flows from operating activities: |  |  |  |  |  |  |  |  |  |  |
Net income | $ 1,828 | $ 2,014 | $ 1,833 | $ 1,658 | $ 1,367 | $ 1,720 | $ 1,635 | $ 1,446 | $ 7,333 | $ 6,168 | $ 6,090
Adjustments to reconcile net income to net cash from operating activities: |  |  |  |  |  |  |  |  |  |  |
Amortization |  |  |  |  |  |  |  |  | 893 | 1,061 | 1,531
Net gain on sale of securities |  |  |  |  |  |  |  |  | (34) | 280 | (312)
Change in market value of equity securities |  |  |  |  |  |  |  |  | (71) |  |
Changes in other assets |  |  |  |  |  |  |  |  | (875) | 417 | (1,952)
Changes in other liabilities |  |  |  |  |  |  |  |  | 573 | (783) | 1,804
Net cash from operating activities |  |  |  |  |  |  |  |  | 9,955 | 8,090 | 10,927
Cash flows from investing activities: |  |  |  |  |  |  |  |  |  |  |
Sales of securities |  |  |  |  |  |  |  |  | 2,725 | 57,628 | 15,317
Purchases of securities |  |  |  |  |  |  |  |  | (31,450) | (56,123) | (69,526)
Net cash used in investing activities |  |  |  |  |  |  |  |  | (43,855) | (18,302) | (41,477)
Cash flows from financing activities: |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock |  |  |  |  |  |  |  |  | 77 | 98 | 85
Repurchase of common stock |  |  |  |  |  |  |  |  | (523) | (203) | (794)
Cash dividends paid |  |  |  |  |  |  |  |  | (2,580) | (2,324) | (2,231)
Net cash from financing activities |  |  |  |  |  |  |  |  | 16,753 | 32,240 | 34,172
Net change in cash |  |  |  |  |  |  |  |  | (17,147) | 22,028 | 3,622
Parent Company [Member] |  |  |  |  |  |  |  |  |  |  |
Cash flows from operating activities: |  |  |  |  |  |  |  |  |  |  |
Net income |  |  |  |  |  |  |  |  | 7,333 | 6,168 | 6,090
Adjustments to reconcile net income to net cash from operating activities: |  |  |  |  |  |  |  |  |  |  |
Equity in undistributed net income of subsidiary |  |  |  |  |  |  |  |  | (4,451) | (3,120) | (2,971)
Amortization |  |  |  |  |  |  |  |  | 18 | 19 | 20
Compensation expense on employee and director stock purchases, stock options, and restricted stock units |  |  |  |  |  |  |  |  | 331 | 304 | 367
Net gain on sale of securities |  |  |  |  |  |  |  |  | (9) | (1) |
Change in market value of equity securities |  |  |  |  |  |  |  |  | (184) |  |
Changes in other assets |  |  |  |  |  |  |  |  | 66 | (37) | (68)
Changes in other liabilities |  |  |  |  |  |  |  |  | (19) | (39) | (1)
Net cash from operating activities |  |  |  |  |  |  |  |  | 3,085 | 3,294 | 3,437
Cash flows from investing activities: |  |  |  |  |  |  |  |  |  |  |
Sales of securities |  |  |  |  |  |  |  |  | 91 | 334 |
Purchases of securities |  |  |  |  |  |  |  |  |  | (466) | (1,126)
Net cash used in investing activities |  |  |  |  |  |  |  |  | 91 | (132) | (1,126)
Cash flows from financing activities: |  |  |  |  |  |  |  |  |  |  |
Issuance of common stock |  |  |  |  |  |  |  |  | 77 | 98 | 85
Repurchase of common stock |  |  |  |  |  |  |  |  | (523) | (203) | (794)
Cash dividends paid |  |  |  |  |  |  |  |  | (2,579) | (2,324) | (2,231)
Net cash from financing activities |  |  |  |  |  |  |  |  | (3,025) | (2,429) | (2,940)
Net change in cash |  |  |  |  |  |  |  |  | 151 | 733 | (629)
Beginning cash |  |  |  | $ 1,249 |  |  |  | $ 516 | 1,249 | 516 | 1,145
Ending cash | $ 1,400 |  |  |  | $ 1,249 |  |  |  | $ 1,400 | $ 1,249 | $ 516

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