Investments - Securities in Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Fair Value	$ 24,959	$ 2,464
Less than 12 months, Unrealized Loss	(188)	(35)
12 months or more, Fair Value	28,035	53,124
12 months or more, Unrealized Loss	(1,448)	(1,386)
Total, Fair Value	52,994	55,588
Total, Unrealized Loss	(1,636)	(1,421)
Residential mortgage backed securities issued by U.S.Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Fair Value	22,504	0
Less than 12 months, Unrealized Loss	(143)	0
12 months or more, Fair Value	25,854	50,697
12 months or more, Unrealized Loss	(847)	(940)
Total, Fair Value	48,358	50,697
Total, Unrealized Loss	(990)	(940)
Residential collateralized mortgage obligations issued by non-agency [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Fair Value	0	0
Less than 12 months, Unrealized Loss	0	0
12 months or more, Fair Value	716	776
12 months or more, Unrealized Loss	(16)	(13)
Total, Fair Value	716	776
Total, Unrealized Loss	(16)	(13)
Asset-backed security [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Fair Value	0	0
Less than 12 months, Unrealized Loss	0	0
12 months or more, Fair Value	1,465	1,651
12 months or more, Unrealized Loss	(585)	(433)
Total, Fair Value	1,465	1,651
Total, Unrealized Loss	(585)	(433)
Mutual funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, Fair Value	2,455	2,464
Less than 12 months, Unrealized Loss	(45)	(35)
12 months or more, Fair Value	0	0
12 months or more, Unrealized Loss	0	0
Total, Fair Value	2,455	2,464
Total, Unrealized Loss	$ (45)	$ (35)