XML 75 R52.htm IDEA: XBRL DOCUMENT v3.20.1
Vessels, Net - Summary of Vessels, Net (Detail) - USD ($)
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Property, Plant and Equipment [Abstract]      
Vessel cost, Balance $ 1,105,413,815 $ 1,090,135,869  
Vessel cost, Acquisitions (transfer from Advances for Vessels under Construction and Acquisitions)   169,331,460  
Vessel cost, Vessels held for sale   (64,188,000)  
Vessel cost, Impairment loss (3,250,000) (60,018,802)  
Vessel cost, Disposals (14,561,832) (29,846,712)  
Vessel cost, Balance 1,087,601,983 1,105,413,815 $ 1,090,135,869
Accumulated Depreciation, Balance (220,665,124) (228,073,963)  
Accumulated Depreciation, Impairment loss 2,256,084 48,666,981  
Accumulated Depreciation, Disposals (3,653,193)    
Accumulated Depreciation, Depreciation for the year (37,693,733) (41,258,142)  
Accumulated Depreciation, Balance (252,449,580) (220,665,124) (228,073,963)
Net Book Value, Balance 884,748,691 862,061,906  
Net Book Value, Acquisitions (transfer from Advances for Vessels under Construction and Acquisitions)   169,331,460  
Net Book Value, Vessels held for sale   (64,188,000)  
Net Book Value, Impairment loss (993,916) (11,351,821) (6,461,273)
Net Book Value, Disposals (10,908,639) (29,846,712)  
Net Book Value, Depreciation for the year (37,693,733) (41,258,142) (38,921,672)
Net Book Value, Balance $ 835,152,403 $ 884,748,691 $ 862,061,906