Investments - Schedule of Unrealized Loss on Investments (Details) $ in Thousands		Sep. 30, 2015 USD ($) security	Dec. 31, 2014 USD ($) security
Less Than Twelve Months
Number of securities | security	[1]	235	142
Gross unrealized losses		$ 2,513	$ 921
Fair value		$ 121,668	$ 88,143
Twelve Months or More
Number of securities | security	[1]	38	49
Gross unrealized losses		$ 426	$ 772
Fair value		$ 29,254	$ 52,517
U.S. Government and Agency Securities
Less Than Twelve Months
Number of securities | security	[1]	13	32
Gross unrealized losses		$ 28	$ 285
Fair value		$ 22,250	$ 36,081
Twelve Months or More
Number of securities | security	[1]	20	20
Gross unrealized losses		$ 130	$ 305
Fair value		$ 11,186	$ 16,947
States, Municipalities and Political Subdivisions
Less Than Twelve Months
Number of securities | security	[1]	34	24
Gross unrealized losses		$ 458	$ 100
Fair value		$ 36,940	$ 22,272
Twelve Months or More
Number of securities | security	[1]	5	11
Gross unrealized losses		$ 11	$ 117
Fair value		$ 6,447	$ 14,310
Public Utilities
Less Than Twelve Months
Number of securities | security	[1]	4	1
Gross unrealized losses		$ 1	$ 1
Fair value		$ 364	$ 1,274
Twelve Months or More
Number of securities | security	[1]	2	1
Gross unrealized losses		$ 18	$ 38
Fair value		$ 2,302	$ 1,014
Corporate Securities
Less Than Twelve Months
Number of securities | security	[1]	61	23
Gross unrealized losses		$ 841	$ 271
Fair value		$ 48,978	$ 23,738
Twelve Months or More
Number of securities | security	[1]	8	16
Gross unrealized losses		$ 207	$ 309
Fair value		$ 9,123	$ 20,215
Redeemable Preferred Stocks
Less Than Twelve Months
Number of securities | security	[1]	5	4
Gross unrealized losses		$ 41	$ 10
Fair value		$ 566	$ 408
Twelve Months or More
Number of securities | security	[1]	0	0
Gross unrealized losses		$ 0	$ 0
Fair value		$ 0	$ 0
Fixed Maturities
Less Than Twelve Months
Number of securities | security	[1]	117	84
Gross unrealized losses		$ 1,369	$ 667
Fair value		$ 109,098	$ 83,773
Twelve Months or More
Number of securities | security	[1]	35	48
Gross unrealized losses		$ 366	$ 769
Fair value		$ 29,058	$ 52,486
Public Utilities
Less Than Twelve Months
Number of securities | security	[1]	7
Gross unrealized losses		$ 27
Fair value		$ 683
Twelve Months or More
Number of securities | security	[1]	0
Gross unrealized losses		$ 0
Fair value		$ 0
Common Stock
Less Than Twelve Months
Number of securities | security	[1]	97	54
Gross unrealized losses		$ 1,090	$ 247
Fair value		$ 10,723	$ 3,992
Twelve Months or More
Number of securities | security	[1]	3	1
Gross unrealized losses		$ 60	$ 3
Fair value		$ 196	$ 31
Non-Redeemable Preferred Stocks
Less Than Twelve Months
Number of securities | security	[1]	14	4
Gross unrealized losses		$ 27	$ 7
Fair value		$ 1,164	$ 378
Twelve Months or More
Number of securities | security	[1]	0	0
Gross unrealized losses		$ 0	$ 0
Fair value		$ 0	$ 0
Equity Securities
Less Than Twelve Months
Number of securities | security	[1]	118	58
Gross unrealized losses		$ 1,144	$ 254
Fair value		$ 12,570	$ 4,370
Twelve Months or More
Number of securities | security	[1]	3	1
Gross unrealized losses		$ 60	$ 3
Fair value		$ 196	$ 31

[1] This amount represents the actual number of discrete securities, not the number of shares of those securities. The numbers are not presented in thousands.