Statutory Accounting Practices (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Statutory Accounting Practices [Line Items]
Net realized investment gains	$ 4,439	$ 2,790
NSIC [Member]
Statutory Accounting Practices [Line Items]
Statutory net income amount	1,427	1,425
Statutory risk-based adjusted capital	12,383	11,092
Net realized investment gains	111	1,722
Asset Valuation Reserve	806	748
NSFC [Member]
Statutory Accounting Practices [Line Items]
Statutory net income amount	2,389	874
Statutory risk-based adjusted capital	26,317	24,089
Net realized capital gains after eliminations	939	842
Intercompany gain on real estate		2,417
Intercompany gain on real estate, net of tax		1,595
Investment in Omega One	5,473	4,459
Omega [Member]
Statutory Accounting Practices [Line Items]
Statutory net income amount	890	1,157
Statutory risk-based adjusted capital	8,975	7,961
Net realized investment gains	$ 81	$ 241