FAIR VALUE - Summary of Carrying Value and Fair Value of Company's Financial Instruments (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014		Dec. 31, 2013
Held to maturity securities	$ 176,724		$ 0
Loans, net	1,373,511		1,284,139
Quoted Prices in Active Markets for Identical Assets Level 1 [Member]
Held to maturity securities	0	[1]
Loans, net	0		0
Deposit liabilities	0		0
Borrowings	0		0
Subordinated debt	0		0
Significant Other Observable Inputs Level 2 [Member]
Held to maturity securities	175,183	[1]
Loans, net	0		0
Deposit liabilities	0		0
Borrowings	52,845		53,856
Subordinated debt	42,888		42,888
Significant Unobservable Inputs Level 3 [Member]
Held to maturity securities	0	[1]
Loans, net	1,378,912		1,272,893
Deposit liabilities	1,808,904		1,807,183
Borrowings	0		0
Subordinated debt	0		0
Carrying Amount [Member]
Held to maturity securities	176,724	[1]
Loans, net	1,361,820		1,266,816
Deposit liabilities	1,808,550		1,806,045
Borrowings	50,000		50,000
Subordinated debt	$ 53,610		$ 53,610

[1] See Note D for further detail of fair value of individual investment categories.