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Vessels, Net (Tables)
 6 Months Ended
Jun. 30, 2019
VESSELS, NET [Abstract]  
Vessels, Net

Vessels

Cost

 

Accumulated
Depreciation

 

Net Book
Value

 

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 

Additions

5,832 

(26,149)

(20,317)

Disposals

(5,696)

81 

(5,615)

Vessel impairment losses

(24,993)

17,648 

(7,345)

 

 

 

 

Balance June 30, 2019

$1,335,374 

$(325,401)

$1,009,973