CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Statement of Other Comprehensive Income [Abstract]
NET INCOME	$ 11,753	$ 25,390	$ 23,336	$ 34,574
OTHER COMPREHENSIVE INCOME (LOSS), NET OF INCOME TAXES:
Other Comprehensive Income (Loss), Unrealized Holding Gain (Loss) on Securities Arising During Period, before Tax	(8,476)	(81)	(8,854)	(136)
Income tax benefit (expense) related to AFS unrealized holding gains (losses)	3,043	29	3,179	49
Reclassification for net (gains) losses on AFS securities realized in earnings	1	0	(116)	0
Income tax benefit (expense) related to net gains (losses) on AFS securities realized in losses	0	0	42	0
Amortization of unrealized gain on tax exempt securities transferred from available-for-sale to held-to-maturity	0	3	0	5
Other comprehensive income (loss)	(5,432)	(49)	(5,749)	(82)
COMPREHENSIVE INCOME	$ 6,321	$ 25,341	$ 17,587	$ 34,492