Fair Value (Details) (Recurring [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Fixed maturities: [Abstract]
US government obligations	$ 113,389	$ 70,742
Residential mortgage-backed securities	13,252	25,040
Commercial mortgage-backed securities	28,565	11,828
State and municipal obligations	115,250	194,865
Corporate securities	134,635	118,945
Options embedded in convertible securities	2,580	1,651
Foreign government obligations	23,879	22,598
Total fixed maturities	431,550	445,669
Equity Securities [Abstract]
Financial institutions	18,850	12,394
Industrial & miscellaneous	126,978	95,188
Total equity securities	145,828	107,582
Short term	4,891	4,201
Cash equivalents	52,002	64,450
Total fair value	634,271	621,902
Level 1 [Member]
Fixed maturities: [Abstract]
US government obligations	113,389	70,742
Residential mortgage-backed securities	0	0
Commercial mortgage-backed securities	0	0
State and municipal obligations	0	0
Corporate securities	0	0
Options embedded in convertible securities	0	0
Foreign government obligations	0	0
Total fixed maturities	113,389	70,742
Equity Securities [Abstract]
Financial institutions	18,850	12,394
Industrial & miscellaneous	126,978	95,188
Total equity securities	145,828	107,582
Short term	4,891	4,201
Cash equivalents	0	0
Total fair value	264,108	182,525
Level 2 [Member]
Fixed maturities: [Abstract]
US government obligations	0	0
Residential mortgage-backed securities	13,252	25,040
Commercial mortgage-backed securities	28,565	11,828
State and municipal obligations	115,250	194,865
Corporate securities	134,635	107,263
Options embedded in convertible securities	2,580	1,651
Foreign government obligations	23,879	22,598
Total fixed maturities	318,161	363,245
Equity Securities [Abstract]
Financial institutions	0	0
Industrial & miscellaneous	0	0
Total equity securities	0	0
Short term	0	0
Cash equivalents	52,002	64,450
Total fair value	370,163	427,695
Level 3 [Member]
Fixed maturities: [Abstract]
US government obligations	0	0
Residential mortgage-backed securities	0	0
Commercial mortgage-backed securities	0	0
State and municipal obligations	0	0
Corporate securities	0	11,682
Options embedded in convertible securities	0	0
Foreign government obligations	0	0
Total fixed maturities	0	11,682
Equity Securities [Abstract]
Financial institutions	0	0
Industrial & miscellaneous	0	0
Total equity securities	0	0
Short term	0	0
Cash equivalents	0	0
Total fair value	$ 0	$ 11,682