Debt - Schedule of Maturities of Principal Amounts of Debt Obligations (Details)	Mar. 31, 2019 USD ($)
Debt Instrument [Line Items]
Nine months ending December 31, 2019	$ 23,146,013
2020	32,649,394
2021	34,134,297
2022	198,134,297
2023	26,134,297
Thereafter	35,241,702
Long-term debt	349,440,000
Norwegian Bond Debt Facility
Debt Instrument [Line Items]
Nine months ending December 31, 2019	8,000,000
2020	8,000,000
2021	8,000,000
2022	172,000,000
2023	0
Thereafter	0
Long-term debt	196,000,000
New Ultraco Debt Facility
Debt Instrument [Line Items]
Nine months ending December 31, 2019	15,146,013
2020	24,649,394
2021	26,134,297
2022	26,134,297
2023	26,134,297
Thereafter	35,241,702
Long-term debt	$ 153,440,000

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 3
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