Investments - Available-for-sale Securities in Unrealized Loss Positions (Details) $ in Thousands	Dec. 31, 2015 USD ($) security	Dec. 31, 2014 USD ($) security
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, number of issues | security	248	108
Greater than 12 months, number of issues | security	22	19
Number of Issues | security	270	127
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Less than 12 months, fair value	$ 60,349	$ 31,794
Greater than 12 months, fair value	6,551	7,632
Fair Value	66,900	39,426
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Less than 12 months, unrealized losses	(781)	(172)
Greater than 12 months, unrealized losses	(139)	(110)
Unrealized losses	$ (920)	$ (282)
U.S. Government obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, number of issues | security	7	0
Greater than 12 months, number of issues | security	2	3
Number of Issues | security	9	3
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Less than 12 months, fair value	$ 2,580	$ 0
Greater than 12 months, fair value	679	1,319
Fair Value	3,259	1,319
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Less than 12 months, unrealized losses	(7)	0
Greater than 12 months, unrealized losses	(6)	(16)
Unrealized losses	$ (13)	$ (16)
State and local government [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, number of issues | security	8	4
Greater than 12 months, number of issues | security	0	3
Number of Issues | security	8	7
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Less than 12 months, fair value	$ 2,688	$ 552
Greater than 12 months, fair value	0	825
Fair Value	2,688	1,377
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Less than 12 months, unrealized losses	(6)	(1)
Greater than 12 months, unrealized losses	0	(3)
Unrealized losses	$ (6)	$ (4)
Corporate debt [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, number of issues | security	80	61
Greater than 12 months, number of issues | security	12	3
Number of Issues | security	92	64
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Less than 12 months, fair value	$ 21,760	$ 18,835
Greater than 12 months, fair value	3,618	489
Fair Value	25,378	19,324
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Less than 12 months, unrealized losses	(438)	(98)
Greater than 12 months, unrealized losses	(45)	(8)
Unrealized losses	$ (483)	$ (106)
Commercial mortgage and asset-backed [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, number of issues | security	67	23
Greater than 12 months, number of issues | security	5	10
Number of Issues | security	72	33
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Less than 12 months, fair value	$ 32,539	$ 12,060
Greater than 12 months, fair value	2,175	4,999
Fair Value	34,714	17,059
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Less than 12 months, unrealized losses	(258)	(34)
Greater than 12 months, unrealized losses	(53)	(83)
Unrealized losses	$ (311)	$ (117)
Fixed maturity securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, number of issues | security	162	88
Greater than 12 months, number of issues | security	19	19
Number of Issues | security	181	107
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Less than 12 months, fair value	$ 59,567	$ 31,447
Greater than 12 months, fair value	6,472	7,632
Fair Value	66,039	39,079
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Less than 12 months, unrealized losses	(709)	(133)
Greater than 12 months, unrealized losses	(104)	(110)
Unrealized losses	$ (813)	$ (243)
Common Stock [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, number of issues | security	86	20
Greater than 12 months, number of issues | security	3	0
Number of Issues | security	89	20
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Abstract]
Less than 12 months, fair value	$ 782	$ 347
Greater than 12 months, fair value	79	0
Fair Value	861	347
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract]
Less than 12 months, unrealized losses	(72)	(39)
Greater than 12 months, unrealized losses	(35)	0
Unrealized losses	$ (107)	$ (39)