Schedule V - Valuation and Qualifying Accounts Schedule V - Valuation and Qualifying Accounts (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Allowance for Possible Loss on Mortgage Loans [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginnning of period	$ 4,571		$ 3,926		$ 4,997
Charged to cost and expense	650	[1]	645	[1]	0	[1]
Reduction	(4,571)		0		(1,071)
Transfers	0		0		0
Balance at end of period	650		4,571		3,926
Allowance for Loan and Lease Losses, Real Estate [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginnning of period	1,758		2,124		2,012
Charged to cost and expense	55	[1]	278	[1]	178	[1]
Reduction	0		(644)		(66)
Transfers	0		0		0
Balance at end of period	$ 1,813		$ 1,758		$ 2,124

[1] These amounts were recorded to realized (gains) losses on investments.