LOANS (Details 1) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Loans by class categorized by internally assigned risk grades
Total loans	$ 3,175,776	$ 3,098,253
Pass
Loans by class categorized by internally assigned risk grades
Total loans	3,099,900	3,012,960
Special Mention
Loans by class categorized by internally assigned risk grades
Total loans	33,448	42,610
Substandard
Loans by class categorized by internally assigned risk grades
Total loans	42,428	42,683
Doubtful
Loans by class categorized by internally assigned risk grades
Total loans	0	0
Commercial real estate | Mortgage loans
Loans by class categorized by internally assigned risk grades
Total loans	1,327,947	1,293,906
Commercial real estate | Mortgage loans | Owner occupied
Loans by class categorized by internally assigned risk grades
Total loans	483,652	472,649
Commercial real estate | Mortgage loans | Owner occupied | Pass
Loans by class categorized by internally assigned risk grades
Total loans	464,708	451,264
Commercial real estate | Mortgage loans | Owner occupied | Special Mention
Loans by class categorized by internally assigned risk grades
Total loans	835	1,796
Commercial real estate | Mortgage loans | Owner occupied | Substandard
Loans by class categorized by internally assigned risk grades
Total loans	18,109	19,589
Commercial real estate | Mortgage loans | Owner occupied | Doubtful
Loans by class categorized by internally assigned risk grades
Total loans	0	0
Commercial real estate | Mortgage loans | Non-owner occupied
Loans by class categorized by internally assigned risk grades
Total loans	844,295	821,257
Commercial real estate | Mortgage loans | Non-owner occupied | Pass
Loans by class categorized by internally assigned risk grades
Total loans	841,338	808,612
Commercial real estate | Mortgage loans | Non-owner occupied | Special Mention
Loans by class categorized by internally assigned risk grades
Total loans	0	8,056
Commercial real estate | Mortgage loans | Non-owner occupied | Substandard
Loans by class categorized by internally assigned risk grades
Total loans	2,957	4,589
Commercial real estate | Mortgage loans | Non-owner occupied | Doubtful
Loans by class categorized by internally assigned risk grades
Total loans	0	0
Multi-Family | Mortgage loans
Loans by class categorized by internally assigned risk grades
Total loans	570,670	595,280
Multi-Family | Mortgage loans | Pass
Loans by class categorized by internally assigned risk grades
Total loans	570,670	595,280
Multi-Family | Mortgage loans | Special Mention
Loans by class categorized by internally assigned risk grades
Total loans	0	0
Multi-Family | Mortgage loans | Substandard
Loans by class categorized by internally assigned risk grades
Total loans	0	0
Multi-Family | Mortgage loans | Doubtful
Loans by class categorized by internally assigned risk grades
Total loans	0	0
Residential real estate | Mortgage loans
Loans by class categorized by internally assigned risk grades
Total loans	510,303	464,264
Residential real estate | Mortgage loans | Residential mortgage
Loans by class categorized by internally assigned risk grades
Total loans	441,934	398,173
Residential real estate | Mortgage loans | Residential mortgage | Pass
Loans by class categorized by internally assigned risk grades
Total loans	432,515	393,029
Residential real estate | Mortgage loans | Residential mortgage | Special Mention
Loans by class categorized by internally assigned risk grades
Total loans	8,558	4,854
Residential real estate | Mortgage loans | Residential mortgage | Substandard
Loans by class categorized by internally assigned risk grades
Total loans	861	290
Residential real estate | Mortgage loans | Residential mortgage | Doubtful
Loans by class categorized by internally assigned risk grades
Total loans	0	0
Residential real estate | Mortgage loans | Home equity
Loans by class categorized by internally assigned risk grades
Total loans	68,369	66,091
Residential real estate | Mortgage loans | Home equity | Pass
Loans by class categorized by internally assigned risk grades
Total loans	66,433	64,601
Residential real estate | Mortgage loans | Home equity | Special Mention
Loans by class categorized by internally assigned risk grades
Total loans	1,235	698
Residential real estate | Mortgage loans | Home equity | Substandard
Loans by class categorized by internally assigned risk grades
Total loans	701	792
Residential real estate | Mortgage loans | Home equity | Doubtful
Loans by class categorized by internally assigned risk grades
Total loans	0	0
Commercial and Industrial
Loans by class categorized by internally assigned risk grades
Total loans	629,906	616,003
Commercial and Industrial | Secured
Loans by class categorized by internally assigned risk grades
Total loans	119,453	112,313
Commercial and Industrial | Secured | Pass
Loans by class categorized by internally assigned risk grades
Total loans	95,758	86,116
Commercial and Industrial | Secured | Special Mention
Loans by class categorized by internally assigned risk grades
Total loans	10,386	12,637
Commercial and Industrial | Secured | Substandard
Loans by class categorized by internally assigned risk grades
Total loans	13,309	13,560
Commercial and Industrial | Secured | Doubtful
Loans by class categorized by internally assigned risk grades
Total loans	0	0
Commercial and Industrial | Unsecured
Loans by class categorized by internally assigned risk grades
Total loans	510,453	503,690
Commercial and Industrial | Unsecured | Pass
Loans by class categorized by internally assigned risk grades
Total loans	491,851	485,598
Commercial and Industrial | Unsecured | Special Mention
Loans by class categorized by internally assigned risk grades
Total loans	12,422	14,553
Commercial and Industrial | Unsecured | Substandard
Loans by class categorized by internally assigned risk grades
Total loans	6,180	3,539
Commercial and Industrial | Unsecured | Doubtful
Loans by class categorized by internally assigned risk grades
Total loans	0	0
Real estate construction and land loans
Loans by class categorized by internally assigned risk grades
Total loans	116,899	107,759
Real estate construction and land loans | Pass
Loans by class categorized by internally assigned risk grades
Total loans	116,588	107,440
Real estate construction and land loans | Special Mention
Loans by class categorized by internally assigned risk grades
Total loans	0	0
Real estate construction and land loans | Substandard
Loans by class categorized by internally assigned risk grades
Total loans	311	319
Real estate construction and land loans | Doubtful
Loans by class categorized by internally assigned risk grades
Total loans	0	0
Installment/consumer loans
Loans by class categorized by internally assigned risk grades
Total loans	20,051	21,041
Installment/consumer loans | Pass
Loans by class categorized by internally assigned risk grades
Total loans	20,039	21,020
Installment/consumer loans | Special Mention
Loans by class categorized by internally assigned risk grades
Total loans	12	16
Installment/consumer loans | Substandard
Loans by class categorized by internally assigned risk grades
Total loans	0	5
Installment/consumer loans | Doubtful
Loans by class categorized by internally assigned risk grades
Total loans	$ 0	$ 0