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Income Taxes (Details Narrative) (USD $)	3 Months Ended
Income Taxes (Details Narrative) (USD $)	Mar. 31, 2013	Mar. 31, 2012
Income Tax Disclosure [Abstract]
Deferred tax liabilities exceeding deferred tax assets	$ 256,000	$ 963,000
Deferred tax benefit in statement of operations	169,000	109,000
Deferred tax benefit to comprehensive income	526,000	529,000
Net unrealized losses on marketable securities	$ 1,410,000	$ 1,418,000