CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) [Abstract]
Net income	$ 7,227	$ 3,281	$ 27,204	$ 8,161
Change in net unrealized (losses) gains on investments available for sale	(1,883)	2,658	359	331
Comprehensive income before tax	5,344	5,939	27,563	8,492
Income tax benefit (expense) related to items of other comprehensive income	615	(1,000)	(229)	(125)
Comprehensive income	$ 5,959	$ 4,939	$ 27,334	$ 8,367