CONDENSED FINANCIAL STATEMENTS OF PARENT COMPANY - Income Statement (Details) - USD ($)
$ in Thousands
 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
Condensed Statements of income                      
Expenses - operating                 $ 83,973 $ 69,566 $ 55,287
Income tax (benefit) - continuing operations                 4,378 2,886 248
Income before income taxes and undistributed earnings - discontinued operations                 6,346 353 (920)
Income tax - discontinued operations                 2,411 140 (344)
Net Income (loss) from discontinued operations                 3,935 213 (576)
Net Income $ 2,307 $ 2,310 $ 6,499 $ 1,796 $ 1,402 $ 1,406 $ 1,905 $ 2,103 12,912 6,816 2,079
Preferred dividends                 1,128 575 332
Net Income available to common shareholders                 11,784 6,241 1,747
Parent Company                      
Condensed Statements of income                      
Income - dividends from bank subsidiary                 9,241 7,744 7,471
Expenses - operating                 11,307 8,988 7,331
Income (loss) before income taxes and undistributed earnings - continuing operations                 (2,066) (1,244) 140
Income tax (benefit) - continuing operations                 (2,072) (1,597) (992)
Income after tax from continuing operations                 6 353 1,132
Income before income taxes and undistributed earnings - discontinued operations                 6,926 0 0
Income tax - discontinued operations                 2,629 0 0
Net Income (loss) from discontinued operations                 4,297 0 0
Equity in undistributed income earnings of subsidiaries                 8,609 6,463 947
Net Income                 12,912 6,816 2,079
Preferred dividends                 1,128 575 332
Net Income available to common shareholders                 $ 11,784 $ 6,241 $ 1,747