Deferred Policy Acquisition Costs (Details 1) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011 As Adjusted [Member]	Dec. 31, 2010 As Adjusted [Member]
Schedule of the activity in the deferred policy acquisition costs
Balance, beginning of year	$ 16,578	$ 15,137	$ 15,997
Policy acquisition costs deferred	40,961	36,064	28,223
Amortization expense during the year	(39,120)	(34,623)	(29,083)
Balance, end of year	$ 18,419	$ 16,578	$ 15,137