GOODWILL AND CORE DEPOSIT INTANGIBLES (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017	Jun. 30, 2018
Goodwill
Beginning of period			$ 85,291	$ 85,291	$ 85,291
End of the period	$ 85,291		85,291		85,291
Core Deposit Intangibles
Beginning of period			8,503	9,975	9,975
Less amortization			(622)	(760)	(1,472)
End of period	7,881		7,881		8,503
Amortization of intangible assets			622	760	1,472
Expected future amortization expense
Total	7,881		8,503	$ 9,975	$ 9,975	$ 7,881
Core deposit intangibles
Core Deposit Intangibles
Less amortization	(306)	$ (380)
End of period	7,881		7,881
Amortization of intangible assets	306	$ 380
Expected future amortization expense
2018						573
2019						1,080
2020						993
2021						905
2022						818
Thereafter						3,512
Total	$ 7,881		$ 7,881			$ 7,881
Core deposit intangibles | Minimum
Core Deposit Intangibles
Intangible asset useful life			6 years
Core deposit intangibles | Maximum
Core Deposit Intangibles
Intangible asset useful life			19 years