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CONDENSED FINANCIAL STATEMENTS OF PARENT COMPANY - Cash Flows (Details) - 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 | $ 7,620 | $ 8,970 | $ 8,535 | $ 7,812 | $ 6,609 | $ 8,617 | $ 6,556 | $ 4,211 | $ 32,937 | $ 25,993 | $ 14,933
Adjustments to reconcile net income to net cash (used) provided by operating activities: |  |  |  |  |  |  |  |  |  |  |
Net cash provided by operating activities |  |  |  |  |  |  |  |  | 37,722 | 40,132 | 16,791
Cash flows from investing activities: |  |  |  |  |  |  |  |  |  |  |
Acquisitions, net of cash paid |  |  |  |  |  |  |  |  | 0 | 39,537 | 0
Net cash used in investing activities |  |  |  |  |  |  |  |  | (43,964) | (159,006) | (181,886)
Cash flows from financing activities: |  |  |  |  |  |  |  |  |  |  |
Net cash provided by financing activities |  |  |  |  |  |  |  |  | 14,311 | 201,120 | 163,814
Net change in cash and cash equivalents |  |  |  |  |  |  |  |  | 8,069 | 82,246 | (1,281)
Cash and cash equivalents at beginning of year |  |  |  | 90,685 |  |  |  | 8,439 | 90,685 | 8,439 | 9,720
Cash and cash equivalents at end of year | 98,754 |  |  |  | 90,685 |  |  |  | 98,754 | 90,685 | 8,439
Parent Company |  |  |  |  |  |  |  |  |  |  |
Cash flows from operating activities: |  |  |  |  |  |  |  |  |  |  |
Net income |  |  |  |  |  |  |  |  | 32,937 | 25,993 | 14,933
Adjustments to reconcile net income to net cash (used) provided by operating activities: |  |  |  |  |  |  |  |  |  |  |
Equity in undistributed income of subsidiaries |  |  |  |  |  |  |  |  | (13,333) | (15,687) | (10,380)
Other, net |  |  |  |  |  |  |  |  | (1,457) | (1,364) | 1,336
Net cash provided by operating activities |  |  |  |  |  |  |  |  | 18,147 | 8,942 | 5,889
Cash flows from investing activities: |  |  |  |  |  |  |  |  |  |  |
Acquisitions, net of cash paid |  |  |  |  |  |  |  |  | 0 | 1,939 | 0
Purchase of securities |  |  |  |  |  |  |  |  | (7) | 0 | 0
Other, net |  |  |  |  |  |  |  |  | 0 | 0 | (1)
Net cash used in investing activities |  |  |  |  |  |  |  |  | (7) | 1,939 | (1)
Cash flows from financing activities: |  |  |  |  |  |  |  |  |  |  |
Net proceeds from common stock |  |  |  |  |  |  |  |  | 951 | 1,052 | 1,570
Net proceeds from reissuance of treasury stock |  |  |  |  |  |  |  |  | 686 | 686 | (497)
Common stock cash dividends paid |  |  |  |  |  |  |  |  | (12,184) | (11,505) | (6,577)
Other, net |  |  |  |  |  |  |  |  | 0 | (16) | 0
Net cash provided by financing activities |  |  |  |  |  |  |  |  | (10,547) | (9,783) | (5,504)
Net change in cash and cash equivalents |  |  |  |  |  |  |  |  | 7,593 | 1,098 | 384
Cash and cash equivalents at beginning of year |  |  |  | $ 2,400 |  |  |  | $ 1,302 | 2,400 | 1,302 | 918
Cash and cash equivalents at end of year | $ 9,993 |  |  |  | $ 2,400 |  |  |  | $ 9,993 | $ 2,400 | $ 1,302

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