Investment in Eldorado Rollforward (Details) (USD $)	7 Months Ended	12 Months Ended
	Sep. 18, 2014	Feb. 28, 2015	Feb. 28, 2014
Equity Method Investment Rollforward [Roll Forward]
Equity in (reversal of) other comprehensive income of unconsolidated investee		$ (27,058)	$ 301,876
Eldorado
Equity Method Investment Rollforward [Roll Forward]
Balance, beginning of period	25,496,573	25,496,573	22,988,441
Equity in net income (loss) of Eldorado	(107,587)		3,110,862
Distributions received from Eldorado	(1,350,000)	(269,000)	(904,606)
Equity in (reversal of) other comprehensive income of unconsolidated investee	(301,876)		301,876
Conversion into ERI shares	(23,737,110)		0
Balance, end of period	$ 0	$ 0	$ 25,496,573