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Vessels, Net (Tables)
 12 Months Ended
Dec. 31, 2018
VESSELS, NET [Abstract]  
Vessels, Net

Vessels

Cost

 

Accumulated
Depreciation

 

Net Book
Value

 

Balance December 31, 2016

$      1,354,298 

$       (317,092)

$      1,037,206 

Additions

158,241 

(56,210)

102,031 

Disposals

(26,233)

18,688 

(7,545)

Vessel impairment losses

(66,228)

33,551 

(32,677)

 

 

 

 

Balance December 31, 2017

$      1,420,078 

$       (321,063)

$      1,099,015 

Additions

115,902 

(54,585)

61,317 

Disposals

(76,264)

— 

(76,264)

Vessel impairment losses

(99,485)

58,667 

(40,818)

 

 

 

 

Balance December 31, 2018

$      1,360,231 

$       (316,981)

$      1,043,250