Condensed Consolidated Balance Sheets - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 60,715,204	$ 67,209,753
Accounts receivable, net of a reserve of $1,758,463 and $2,073,616, respectively	18,975,479	19,785,582
Prepaid expenses	3,941,090	4,635,879
Inventories	13,137,786	16,137,785
Vessels held for sale	0	8,458,444
Other current assets	3,242,311	2,246,740
Total current assets	100,011,870	118,474,183
Noncurrent assets:
Vessels and vessel improvements, at cost, net of accumulated depreciation of $133,015,330 and $124,907,998, respectively	695,343,213	682,944,936
Advance for vessel purchase	0	2,040,000
Operating lease right-of-use assets	25,433,893
Other fixed assets, net of accumulated depreciation of $610,970 and $547,452, respectively	655,648	692,803
Restricted cash	19,283,145	10,953,885
Deferred drydock costs, net	13,219,645	12,186,356
Deferred financing costs - Super Senior Facility	285,342	285,342
Other assets	28,772,636	18,631,655
Total noncurrent assets	782,993,522	727,734,977
Total assets	883,005,392	846,209,160
Current liabilities:
Accounts payable	13,694,404	14,161,169
Accrued interest	6,990,987	1,735,631
Other accrued liabilities	9,109,295	10,064,017
Fair value of derivatives	0	929,313
Current portion of operating lease liabilities	13,775,046
Unearned charter hire revenue	5,173,582	6,926,839
Current portion of long-term debt	28,194,684	29,176,230
Total current liabilities	76,937,998	62,993,199
Noncurrent liabilities:
Total debt	312,720,811	301,583,347
Operating lease liabilities	13,142,943
Other liabilities	0	208,651
Fair value below contract value of time charters acquired	0	1,818,114
Total noncurrent liabilities	325,863,754	303,610,112
Total liabilities	402,801,752	366,603,311
Commitments and contingencies
Stockholders' equity:
Preferred stock, $.01 par value, 25,000,000 shares authorized, none issued as of March 31, 2019 and December 31, 2018	0	0
Common stock, $.01 par value, 700,000,000 shares authorized, 71,348,411 and 71,055,400 shares issued and outstanding as of March 31, 2019 and December 31, 2018, respectively	713,484	710,555
Additional paid-in capital	894,837,912	894,272,533
Accumulated deficit	(415,347,756)	(415,377,239)
Total stockholders' equity	480,203,640	479,605,849
Total liabilities and stockholders' equity	883,005,392	846,209,160
Norwegian Bond Debt Facility
Noncurrent liabilities:
Total debt	182,817,726	182,469,155
New First Lien Facility
Noncurrent liabilities:
Total debt	0	48,189,307
Ultraco Debt Facility
Noncurrent liabilities:
Total debt	0	70,924,885
New Ultraco Debt Facility
Noncurrent liabilities:
Total debt	$ 129,903,085	$ 0