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Other Current Liabilities (Tables)
 12 Months Ended
Dec. 31, 2019
Other Current Liabilities [Abstract]  
Schedule of Other Current Liabilities

Other current liabilities consists of (in thousands):

 

 

 

 

 

 

 

 

 

December 31,

 

    

2019

    

2018

Operating lease liability

 

 

652

 

 

—

Due to affiliate

 

$

 5

 

$

164

Accrued professional fees

 

 

1,419

 

 

1,206

Pension and other post-retirement liabilities

 

 

77

 

 

69

Income taxes payable

 

 

673

 

 

—

Accrued liabilities

 

 

57

 

 

56

 

 

$

2,883

 

$

1,495