INCOME TAXES - Schedule of Components of Income Tax Expense (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
Provision or benefit for income taxes                      
Currently payable                 $ 3,054 $ 3,527 $ 3,680
Deferred benefit                 1,543 209 124
Total provision $ 1,290 $ 1,273 $ 1,152 $ 882 $ 1,106 $ 957 $ 825 $ 848 $ 4,597 $ 3,736 $ 3,804