Condensed Consolidated Balance Sheets - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 69,229,926	$ 53,583,898
Restricted cash - current	2,917,885	5,471,470
Accounts receivable, net of a reserve of $2,760,679 and $2,472,345, respectively	18,155,336	19,982,871
Prepaid expenses	4,019,234	4,631,416
Inventories	15,360,834	15,824,278
Derivative asset and other current assets	14,753,326	1,039,430
Total current assets	124,436,541	100,533,363
Noncurrent assets:
Vessel and vessel improvements, at cost, net of accumulated depreciation	858,807,828	835,959,084
Operating lease right-of-use assets	17,185,019	20,410,037
Other fixed assets, net of accumulated depreciation	690,558	740,654
Restricted cash - noncurrent	74,917	74,917
Deferred drydock costs, net	20,772,193	17,495,270
Deferred financing costs - Super Senior Facility	0	166,111
Advance for scrubbers and ballast water systems and other assets	4,500,971	26,707,700
Total noncurrent assets	902,031,486	901,553,773
Total assets	1,026,468,027	1,002,087,136
Current liabilities:
Accounts payable	10,239,878	13,483,397
Accrued interest	7,797,292	5,321,089
Other accrued liabilities	17,346,898	28,996,836
Fair value of derivative instruments - current	3,314,556	756,229
Current portion of operating lease liabilities	13,346,261	13,255,978
Unearned charter hire revenue	3,232,360	4,692,259
Current portion of long-term debt	37,194,297	35,709,394
Total current liabilities	92,471,542	102,215,182
Noncurrent liabilities:
Total debt	451,620,224	410,067,224
Fair value of derivative instruments - non current		0
Operating lease liabilities	4,821,044	8,301,793
Total noncurrent liabilities	456,618,276	418,369,017
Total liabilities	549,089,818	520,584,199
Commitments and contingencies
Stockholders' equity:
Preferred stock	0	0
Common stock	719,399	715,022
Additional paid-in capital	917,532,791	917,862,269
Accumulated deficit	(440,602,113)	(437,074,354)
Accumulated other comprehensive loss	(271,868)	0
Total stockholders' equity	477,378,209	481,502,937
Total liabilities and stockholders' equity	1,026,468,027	1,002,087,136
Fair value of derivative instruments - noncurrent | Designated as Hedging Instrument
Noncurrent liabilities:
Fair value of derivative instruments - non current	177,008	0
Norwegian Bond Debt Facility
Noncurrent liabilities:
Total debt	176,221,096	175,867,310
New First Lien Facility
Noncurrent liabilities:
Total debt	2,355,465	0
New Ultraco Debt Facility
Noncurrent liabilities:
Total debt	134,313,009	141,396,770
New Ultraco Debt Facility Revolver Loan
Noncurrent liabilities:
Total debt	45,000,000	0
Convertible Bond Debt
Noncurrent liabilities:
Total debt	$ 93,730,654	$ 92,803,144