SCHEDULE I -SUMMARY OF INVESTMENTS-OTHER THAN INVESTMENTS IN RELATED PARTIES (Details) - USD ($) $ in Thousands		Dec. 31, 2015	Dec. 31, 2014
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Cost		$ 442,578	$ 455,385
Amount at which shown in the balance sheet		2,969
Money markets fund classified with cash and cash equivalent and excluded from other investments in related party		69,517
Total Investments [Member]
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Cost		555,468
Fair value		615,351
Amount at which shown in the balance sheet	[1]	615,351
Limited Partnership [Member]
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Cost		30,449
Fair value		30,449
Amount at which shown in the balance sheet	[1]	30,449
Bonds [Member] | Total Fixed Maturities [Member]
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Cost		442,578
Fair value		437,184
Amount at which shown in the balance sheet	[1]	437,184
Bonds [Member] | U.S Government Obligations [Member]
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Cost		103,448
Fair value		103,245
Amount at which shown in the balance sheet	[1]	103,245
Bonds [Member] | Mortgage-backed Securities [Member]
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Cost		35,645
Fair value		35,371
Amount at which shown in the balance sheet	[1]	35,371
Bonds [Member] | State and Municipal Obligations [Member]
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Cost		109,932
Fair value		110,578
Amount at which shown in the balance sheet	[1]	110,578
Bonds [Member] | Foreign Government Obligations [Member]
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Cost		25,416
Fair value		23,965
Amount at which shown in the balance sheet	[1]	23,965
Bonds [Member] | Corporate Securities [Member]
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Cost		168,137
Fair value		164,025
Amount at which shown in the balance sheet	[1]	164,025
Common Stocks [Member] | Total Equity Securities [Member]
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Cost		80,221
Fair value		145,498
Amount at which shown in the balance sheet	[1]	145,498
Common Stocks [Member] | Industrial, Miscellaneous, and All Others [Member]
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Cost		80,221
Fair value		145,498
Amount at which shown in the balance sheet	[1]	145,498
Short-term [Member] | Total Short-term and Other [Member]
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Cost		2,220
Fair value		2,220
Amount at which shown in the balance sheet	[1]	2,220
Short-term [Member] | Certificates of Deposit [Member]
Summary of Investments, Other than Investments in Related Parties, Reportable Data [Line Items]
Cost		2,220
Fair value		2,220
Amount at which shown in the balance sheet	[1]	$ 2,220

[1] Investments presented above do not include $69,517 of money market funds classified with cash and cash equivalents in the balance sheet.