LOANS (Details 2) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Loans by class categorized by internally assigned risk grades
Total loans	$ 2,407,522	$ 1,335,961	$ 1,011,525
Pass
Loans by class categorized by internally assigned risk grades
Total loans	2,380,596	1,305,616
Special Mention
Loans by class categorized by internally assigned risk grades
Total loans	7,733	12,607
Substandard
Loans by class categorized by internally assigned risk grades
Total loans	$ 19,193	$ 17,738
Doubtful
Loans by class categorized by internally assigned risk grades
Total loans
Commercial real estate: Owner occupied
Loans by class categorized by internally assigned risk grades
Total loans	$ 471,321	$ 256,608
Commercial real estate: Owner occupied | Pass
Loans by class categorized by internally assigned risk grades
Total loans	465,967	243,512
Commercial real estate: Owner occupied | Special Mention
Loans by class categorized by internally assigned risk grades
Total loans	3,239	7,133
Commercial real estate: Owner occupied | Substandard
Loans by class categorized by internally assigned risk grades
Total loans	$ 2,115	$ 5,963
Commercial real estate: Owner occupied | Doubtful
Loans by class categorized by internally assigned risk grades
Total loans
Commercial real estate: Non-owner occupied
Loans by class categorized by internally assigned risk grades
Total loans	$ 582,078	$ 338,789
Commercial real estate: Non-owner occupied | Pass
Loans by class categorized by internally assigned risk grades
Total loans	573,049	334,790
Commercial real estate: Non-owner occupied | Special Mention
Loans by class categorized by internally assigned risk grades
Total loans	542	171
Commercial real estate: Non-owner occupied | Substandard
Loans by class categorized by internally assigned risk grades
Total loans	$ 8,487	$ 3,828
Commercial real estate: Non-owner occupied | Doubtful
Loans by class categorized by internally assigned risk grades
Total loans
Multi-family
Loans by class categorized by internally assigned risk grades
Total loans	$ 350,793	$ 218,985	107,488
Multi-family | Pass
Loans by class categorized by internally assigned risk grades
Total loans	$ 350,785	217,855
Multi-family | Special Mention
Loans by class categorized by internally assigned risk grades
Total loans		202
Multi-family | Substandard
Loans by class categorized by internally assigned risk grades
Total loans	$ 8	$ 928
Multi-family | Doubtful
Loans by class categorized by internally assigned risk grades
Total loans
Residential real estate: Residential
Loans by class categorized by internally assigned risk grades
Total loans	$ 324,489	$ 90,018
Residential real estate: Residential | Pass
Loans by class categorized by internally assigned risk grades
Total loans	323,557	$ 88,405
Residential real estate: Residential | Special Mention
Loans by class categorized by internally assigned risk grades
Total loans	87
Residential real estate: Residential | Substandard
Loans by class categorized by internally assigned risk grades
Total loans	$ 845	$ 1,613
Residential real estate: Residential | Doubtful
Loans by class categorized by internally assigned risk grades
Total loans
Residential real estate: Home equity
Loans by class categorized by internally assigned risk grades
Total loans	$ 68,326	$ 66,138
Residential real estate: Home equity | Pass
Loans by class categorized by internally assigned risk grades
Total loans	66,910	64,994
Residential real estate: Home equity | Special Mention
Loans by class categorized by internally assigned risk grades
Total loans	523	212
Residential real estate: Home equity | Substandard
Loans by class categorized by internally assigned risk grades
Total loans	$ 893	$ 932
Residential real estate: Home equity | Doubtful
Loans by class categorized by internally assigned risk grades
Total loans
Commercial: Secured
Loans by class categorized by internally assigned risk grades
Total loans	$ 123,737	$ 93,967
Commercial: Secured | Pass
Loans by class categorized by internally assigned risk grades
Total loans	121,037	91,007
Commercial: Secured | Special Mention
Loans by class categorized by internally assigned risk grades
Total loans	151	621
Commercial: Secured | Substandard
Loans by class categorized by internally assigned risk grades
Total loans	$ 2,549	$ 2,339
Commercial: Secured | Doubtful
Loans by class categorized by internally assigned risk grades
Total loans
Commercial: Unsecured
Loans by class categorized by internally assigned risk grades
Total loans	$ 378,029	$ 197,776
Commercial: Unsecured | Pass
Loans by class categorized by internally assigned risk grades
Total loans	370,642	191,942
Commercial: Unsecured | Special Mention
Loans by class categorized by internally assigned risk grades
Total loans	3,191	4,168
Commercial: Unsecured | Substandard
Loans by class categorized by internally assigned risk grades
Total loans	$ 4,196	$ 1,666
Commercial: Unsecured | Doubtful
Loans by class categorized by internally assigned risk grades
Total loans
Real estate construction and land loans
Loans by class categorized by internally assigned risk grades
Total loans	$ 91,153	$ 63,556	46,981
Real estate construction and land loans | Pass
Loans by class categorized by internally assigned risk grades
Total loans	$ 91,153	$ 63,190
Real estate construction and land loans | Special Mention
Loans by class categorized by internally assigned risk grades
Total loans
Real estate construction and land loans | Substandard
Loans by class categorized by internally assigned risk grades
Total loans		$ 366
Real estate construction and land loans | Doubtful
Loans by class categorized by internally assigned risk grades
Total loans
Installment/consumer loans
Loans by class categorized by internally assigned risk grades
Total loans	$ 17,596	$ 10,124	$ 9,287
Installment/consumer loans | Pass
Loans by class categorized by internally assigned risk grades
Total loans	$ 17,496	9,921
Installment/consumer loans | Special Mention
Loans by class categorized by internally assigned risk grades
Total loans		100
Installment/consumer loans | Substandard
Loans by class categorized by internally assigned risk grades
Total loans	$ 100	$ 103
Installment/consumer loans | Doubtful
Loans by class categorized by internally assigned risk grades
Total loans