Fair Value Measurement - Assets and Liabilities Measured on Recurring Basis (Details) - Level 2	Jun. 30, 2015 USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Current derivative assets, Gross Amounts Recognized	$ 355,555
Current derivative assets, Gross Amounts Offset in the Consolidated Balance Sheet	(355,555)
Current derivative assets, Net Amounts Presented in the Consolidated Balance Sheets	0
Current derivative liabilities, Gross Amounts Recognized	(465,529)
Current derivative liabilities, Gross Amounts Offset in the Consolidated Balance Sheet	355,555
Current derivative liabilities, Net Amounts Presented in the Consolidated Balance Sheets	(109,974)
Total, Gross Amounts Recognized	(109,974)
Total, Gross Amounts Offset in the Consolidated Balance Sheet	0
Total, Net Amounts Presented in the Consolidated Balance Sheets	$ (109,974)