CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Net income	$ 13,005	$ 11,540	$ 37,287	$ 37,013
Other comprehensive income, net of tax:
Change in unrealized appreciation of available-for-sale securities, net of tax	2,458	3,634	3,505	9,091
Reclassification adjustment for losses/(gains) included in net income, net of tax	1	(11)	(170)	(856)
Other comprehensive income	2,459	3,623	3,335	8,235
Comprehensive income	$ 15,464	$ 15,163	$ 40,622	$ 45,248