BUSINESS COMBINATIONS - fair value of the assets purchased, including goodwill, and liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Mar. 11, 2016	Dec. 31, 2015
Assets:
Goodwill	$ 55,196		$ 25,211
Other assets		$ 417,000
Floridian Financial Group [Member]
Assets:
Cash		28,243
Investment securities		66,912
Loans, net		268,249
Fixed assets		7,801
Core deposit intangibles		3,375
Goodwill		29,985
Other assets		12,879
Total assets acquired		417,444
Liabilities:
Deposits		337,341
Other liabilities		2,492
Total liabilities assumed		$ 339,833