Insurance Operations - Beginning and Ending Balances and Changes in DPAC, Net of DRCC (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Insurance [Abstract]
DPAC, beginning of period	$ 54,211	$ 55,391	$ 54,099	$ 54,431
Capitalized Costs	29,993	30,241	56,775	58,933
Amortization of DPAC	(26,055)	(26,599)	(52,725)	(54,331)
DPAC, end of period	58,149	59,033	58,149	59,033
DRCC, beginning of period	38,318	38,014	38,200	37,149
Ceding Commissions Written	10,439	26,222	32,319	48,534
Earned Ceding Commissions	(18,685)	(22,444)	(40,447)	(43,891)
DRCC, end of period	30,072	41,792	30,072	41,792
DPAC (DRCC), net, beginning of period	15,893	17,377	15,899	17,282
Capitalized Costs, net	19,554	4,019	24,456	10,399
Amortization of DPAC (DRCC), net	(7,370)	(4,155)	(12,278)	(10,440)
DPAC (DRCC), net, end of period	$ 28,077	$ 17,241	$ 28,077	$ 17,241