Statutory Accounting Practices (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Statutory Accounting Practices [Line Items]
Net realized investment gains (losses)	$ 503,000	$ 100,000
NSIC [Member]
Statutory Accounting Practices [Line Items]
Statutory Accounting Practices, Statutory Net Income Amount	1,488,000	1,051,000
Tier One Risk Based Capital	13,872,000	12,924,000
Net realized investment gains (losses)	313,000	455,000
Asset Valuation Reserve	820,000	832,000
NSFC [Member]
Statutory Accounting Practices [Line Items]
Statutory Accounting Practices, Statutory Net Income Amount	2,988,000	6,590,000
Tier One Risk Based Capital	34,446,000	32,314,000
Net realized investment gains (losses)	166,000	(477,000)
Investment in Omega One	7,189	6,364
Omega [Member]
Statutory Accounting Practices [Line Items]
Statutory Accounting Practices, Statutory Net Income Amount	771,000	830,000
Tier One Risk Based Capital	10,689,000	9,864,000
Net realized investment gains (losses)	$ 24,000	$ 120,000