Investments - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Investment Holdings [Line Items]
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities	$ 0
Fair Value of Limited Partnership Interest	4,910,000
Kayne Senior Credit Fund II, L.P. [Member]
Investment Holdings [Line Items]
Fair Value of Limited Partnership Interest	1,005,000
Payments to Acquire Other Investments	995,000
United Capital Funding Corp. [Member]
Investment Holdings [Line Items]
Payments to Acquire Other Investments	950,000
Other Long-term Investments [Member]
Investment Holdings [Line Items]
Other Long-term Investments	$ 5,210,000	$ 3,010,000