Investments (Private Label Mortgage Backed Securities) (Details) (USD $) In Thousands, unless otherwise specified					9 Months Ended
	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2014 Private-Label Mortgage-Backed Securities [Member]	Dec. 31, 2013 Private-Label Mortgage-Backed Securities [Member]	Sep. 30, 2014 Lowest Credit Rating Assigned: Standard & Poor's, BBB+ Rating [Member] RALI2004-QS4 A7 [Member]	Sep. 30, 2014 Lowest Credit Rating Assigned: Standard & Poor's, CCC Rating [Member] MALT2004-6 7A1 [Member]	Sep. 30, 2014 Lowest Credit Rating Assigned: Standard & Poor's, CC Rating [Member] RALI2005-QS2 A1 [Member]	Sep. 30, 2014 Lowest Credit Rating Assigned: Standard & Poor's, D Rating [Member] RALI2006-QS4 A2 [Member]	Sep. 30, 2014 Lowest Credit Rating Assigned: Standard & Poor's, D Rating [Member] GSR 2006-5F 2A1 [Member]	Sep. 30, 2014 Lowest Credit Rating Assigned: Standard & Poor's, D Rating [Member] RALI2006-QS8 A1 [Member]
Schedule of Available-for-sale Securities [Line Items]
Origination Date					Mar. 01, 2004	Jun. 01, 2004	Feb. 01, 2005	Apr. 01, 2006	May 01, 2006	Jul. 28, 2006
Amortized Cost	$ 174,584	$ 160,415	$ 1,750	$ 1,984	$ 105	$ 417	$ 289	$ 562	$ 87	$ 290
Investment securities available for sale, at fair value	176,111	159,674	1,803	1,969	108	426	302	573	93	301
Gross Unrealized Gain (Loss)			53		3	9	13	11	6	11
Collateral Type					ALT A	ALT A	ALT A	ALT A	Prime	ALT A
Lowest Credit Rating Assigned to Private Label Mortgage Backed Securities					BBB+	CCC	CC	D	D	D
Credit Support %					12.31%	14.00%	5.85%
Cumulative OTTI Charges			$ 535				$ 10	$ 293	$ 15	$ 217