Income Taxes (Details Textual) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Sep. 30, 2015
Operating Loss Carryforwards [Line Items]
Effective tax rate			36.80%
Impairment charge of net capitalized costs	$ 21,200,000	$ 801,166,000	$ 0	$ 21,229,000
Valuation allowance against net deferred tax assets					$ 154,300,000
Increase in valuation allowance		(145,777,000)	0	$ 8,885,000
Net capitalized costs less related deferred income taxes exceeded the full-cost ceiling			$ 0
Internal Revenue Service (IRS) [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards		212,500,000
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards		$ 4,800,000