XML 96 R82.htm IDEA: XBRL DOCUMENT v3.8.0.1
INCOME TAXES - Provision for income tax expense (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
INCOME TAXES                      
Current federal income tax                 $ 13,364 $ 11,269 $ 12,353
Current state income tax                 157 140 102
Deferred income tax                 2,932 601 (1,664)
Total income tax expense $ 6,313 $ 3,927 $ 3,181 $ 3,032 $ 3,322 $ 3,032 $ 2,845 $ 2,811 $ 16,453 $ 12,010 $ 10,791