CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Statement of Comprehensive Income [Abstract]
NET INCOME	$ 10,570	$ 11,582
OTHER COMPREHENSIVE INCOME (LOSS), NET OF INCOME TAXES:
Unrealized holding gain (loss) on AFS securities arising during the period	2,437	(378)
Income tax benefit (expense) related to AFS unrealized holding gains (losses)	(877)	136
Reclassification for net (gains) losses on AFS securities realized in earnings	34	(117)
Income tax benefit (expense) related to AFS realized gains (losses)	(12)	42
Amortization of unrealized gain on tax exempt securities transferred from AFS to HTM	0	0
Other comprehensive income (loss)	1,582	(317)
COMPREHENSIVE INCOME	$ 12,152	$ 11,265