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Quarterly Financial Information (Schedule of Quarterly Financial Information (Unaudited)) (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract]
Net revenues	$ 8,037,488	$ 7,885,048	$ 8,909,741	$ 8,686,774	$ 9,329,412	$ 9,729,047	$ 9,750,168	$ 8,093,244	$ 33,519,051	$ 36,901,871	$ 32,027,462
Operating income (loss)	162,679	270,884	673,931	4,116	946,138	989,038	1,215,609	408,051	1,111,610	3,558,836	(3,801,338)
Net income (loss) attributable to common shareholders	$ 151,059	$ 126,613	$ 407,398	$ 46,281	$ 668,913	$ 745,920	$ 722,570	$ 286,320	$ 731,351	$ 2,423,723	$ (2,104,614)
Earnings per share attributable to common shareholders
Basic (in USD per share)	$ 0.01	$ 0.01	$ 0.02	$ 0.00	$ 0.04	$ 0.04	$ 0.04	$ 0.02	$ 0.04	$ 0.14	$ (0.11)
Diluted (in USD per share)	$ 0.01	$ 0.01	$ 0.02	$ 0.00	$ 0.04	$ 0.04	$ 0.04	$ 0.02	$ 0.04	$ 0.14	$ (0.11)

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.