DEPOSITS (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Balance [Abstract]
NOW accounts	$ 1,655,425	$ 1,472,985
Money market accounts	1,670,035	1,642,803
Savings accounts	526,576	493,386
Time deposits less than $100	896,700	1,017,925
Time deposits $100 or greater	353,791	417,065
Total interest bearing deposits	5,102,527	5,044,164
Non-interest bearing deposits	970,051	891,401
Total deposits	6,072,578	5,935,565
Interest Expense [Abstract]
NOW accounts	2,310	1,990
Money market accounts	4,460	5,699
Savings accounts	546	573
Time deposits less than $100	10,954	13,529
Time deposits $100 or greater	4,109	5,031
Total interest bearing deposits	22,379	26,822
Total deposits	22,379	26,822	40,534
Maturities of time deposits [Abstract]
2014	831,412
2015	193,950
2016	112,071
2017	72,819
2018	40,068
Thereafter	171
Total	$ 1,250,491