Condensed 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	$ 13,411	$ 6,124	$ 26,650	$ 15,988
Net unrealized investment gains (losses):
Unrealized gains (losses), net of tax provisions of $0.1 million for the three and nine months ended September 30, 2012 and net of tax benefits of $0.1 million for the three and nine months ended September 30, 2011	79	(184)	229	(79)
Reclassification adjustments for (gains) losses included in net income, net of no tax benefit for the three and nine months ended September 30, 2012 and $0 and $0.1 million for the three and nine months ended September 30, 2011, respectively	(11)	(2)	(53)	(102)
Net unrealized investment gains (losses)	68	(186)	176	(181)
Currency translation adjustments, net of tax provisions of $0.2 million and $0 for the three and nine months ended September 30, 2012, respectively, and $0.2 million and $0 for the three and nine months ended September 30, 2011, respectively	1,105	(590)	(458)	(869)
Other	67	(157)	100	(173)
Other comprehensive income	$ 14,651	$ 5,191	$ 26,468	$ 14,765