Reinsurance Ceded Premiums Earned by type (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Ceded Premiums Earned by type [Line Items]
Ceded Premiums Written	$ (1,088)	$ (3,468)	$ (141,731)	$ (122,357)
Increase (Decrease) in Ceded Unearned Premiums	(34,653)	(27,849)	41,974	34,532
Ceded Premiums Earned	(35,741)	(31,317)	(99,757)	(87,825)
Excess of Loss Product Line [Member]
Ceded Premiums Earned by type [Line Items]
Ceded Premiums Written	4,642	1,190	(126,632)	(109,893)
Equipment and Identity Theft Product Line [Member]
Ceded Premiums Earned by type [Line Items]
Ceded Premiums Written	(1,221)	(707)	(3,138)	(1,862)
Flood Product Line [Member]
Ceded Premiums Earned by type [Line Items]
Ceded Premiums Written	$ (4,509)	$ (3,951)	$ (11,961)	$ (10,602)