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Parent Company Only Financial Statements Condensed statements of cash flows (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Condensed Financial Statements, Captions [Line Items] |  |  |
Net income | $ 47,943 | $ 36,600 | $ 26,684
Depreciation, amortization and accretion, net | 10,842 | 7,881 | 8,134
Increase in other assets | (4,680) | (4,266) | 668
Increase (decrease) in other liabilities | 3,282 | (7,846) | 666
Net cash provided by operating activities | 62,828 | 42,175 | 46,154
Cash Acquired from Acquisition | 0 | 56,389 | 0
Net cash used in investing activities | (32,072) | (10,961) | (55,962)
Repayment of short-term debt | 0 | 0 | (4,000)
Repayments of Long-term Debt | (7,724) | (10,313) | (3,750)
Proceeds from issuance of common stock | 655 | 36,645 | 4,399
Payments for Repurchase of Common Stock | (1,293) | (138) | (797)
Direct expenses related to capital transactions | 0 | (2,309) | (216)
Dividends paid on common stock | (11,863) | (8,792) | (7,228)
Net cash provided by (used in) financing activities | (87,076) | 21,307 | (77,215)
Increase (decrease) in cash | (56,320) | 52,521 | (87,023)
Cash and cash equivalents at beginning of period | 141,400 | 88,879 | 175,902
Cash and cash equivalents at end of period | 85,080 | 141,400 | 88,879
Parent Company [Member] |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |
Net income | 47,943 | 36,600 | 26,684
Depreciation, amortization and accretion, net | 125 | 90 | 82
Dividends from subsidiaries | 38,688 | 21,694 | 18,925
Equity in undistributed earnings of subsidiaries | (12,479) | (18,885) | (9,570)
Increase in other assets | (39,042) | (1,645) | (19,348)
Increase (decrease) in other liabilities | (17,104) | 79 | 733
Net cash provided by operating activities | 18,131 | 37,933 | 17,506
Payments to Acquire Additional Interest in Subsidiaries | (343) | (13,430) | 0
Cash Acquired from Acquisition | 310 | (29,321) | 0
Net cash used in investing activities | (33) | (42,751) | 0
Repayment of short-term debt | 0 | 0 | (4,000)
Repayments of Long-term Debt | (10,310) | (10,313) | (3,750)
Proceeds from issuance of common stock | 589 | 36,645 | 4,399
Payments for Repurchase of Common Stock | (1,293) | (138) | (797)
Direct expenses related to capital transactions | 0 | (2,309) | (216)
Dividends paid on common stock | (11,863) | (8,792) | (7,228)
Net cash provided by (used in) financing activities | (22,877) | 15,093 | (11,592)
Increase (decrease) in cash | (4,779) | 10,275 | 5,914
Cash and cash equivalents at beginning of period | 18,571 | 8,296 | 2,382
Cash and cash equivalents at end of period | $ 13,792 | $ 18,571 | $ 8,296

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