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Long-Term Debt (Tables)
3 Months Ended
Mar. 31, 2018
Long-Term Debt [Abstract]  
Schedule of long-term debt instruments
  As of 
March 31, 2018
  As of 
December 31, 2017
 
  (unaudited)    
(In thousands) Principal  Discount and Deferred Financing Costs, net  Balance  Principal  Discount and Deferred Financing Costs, net  Balance 
Note payable $2,525  $-  $2,525  $2,525  $-  $2,525 
Credit Facility  200,000   (12,544)  187,456   170,625   (7,214)  163,411 
Total long-term debt  202,525   (12,544)  189,981   173,150   (7,214)  165,936 
Less current portion  (1,500)  -   (1,500)  (1,750)  -   (1,750)
Total long-term debt, non-current $201,025  $(12,544) $188,481  $171,400  $(7,214) $164,186