Derivative Instruments and Fair Value Measurements - Schedule of Fair Value Measurements (Details) - USD ($)	Sep. 30, 2018	Dec. 31, 2017
Liabilities
Non-current restricted cash	$ 10,907,592	$ 74,917
Recurring
Assets
Cash and cash equivalents	91,644,657	56,325,961
Short-term investment		4,500,000
Recurring \| Level 1
Assets
Cash and cash equivalents	91,644,657	56,325,961
Short-term investment		0
Recurring \| Level 2
Assets
Cash and cash equivalents	0	0
Short-term investment		4,500,000
Recurring \| Norwegian Bond Debt Facility
Liabilities
Debt instrument	194,702,844	193,950,329
Recurring \| Norwegian Bond Debt Facility \| Level 1
Liabilities
Debt instrument	0	0
Recurring \| Norwegian Bond Debt Facility \| Level 2
Liabilities
Debt instrument	206,100,000	200,990,000
Recurring \| New First Lien Facility
Liabilities
Debt instrument	58,871,447	63,758,185
Recurring \| New First Lien Facility \| Level 1
Liabilities
Debt instrument	0	0
Recurring \| New First Lien Facility \| Level 2
Liabilities
Debt instrument	60,000,000	65,000,000
Recurring \| Ultraco Debt Facility
Liabilities
Debt instrument	68,700,906	59,975,162
Recurring \| Ultraco Debt Facility \| Level 1
Liabilities
Debt instrument	0	0
Recurring \| Ultraco Debt Facility \| Level 2
Liabilities
Debt instrument	$ 69,800,000	$ 61,200,000

Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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Amount of cash and cash equivalents restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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