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Other Expenses (Revenues), Net
 12 Months Ended
Dec. 31, 2015
Other Expenses (Revenues), Net [Abstract]  
OTHER EXPENSES (REVENUES), NET

10.         OTHER EXPENSES (REVENUES), NET

 

Other expenses (revenues), net, consisted of the following:

 

  Year Ended December 31, 
  2015  2014  2013 
License option fee(1) $0  $0  ($250,000)
Royalty income  0   0   3,000 
Interest income  (19,169)  (15,552)  (12,493)
Interest expense  80,235   57,827   66,689 
Debt issuance amortization  3,343   2,876   2,894 
Other (gains) losses  (5,635)  3,902   (34,902)
   Other expenses (revenues), net $58,774  $49,053  ($224,812)

  

(1) During the second quarter of 2013, we received a $250,000 exclusion option fee from a prospective partner for the development and marketing of Mast OutÒ. This payment was recorded as deferred revenue upon receipt. During the third quarter of 2013, this prospective partner decided not to execute a license after its final due diligence. Accordingly, the deferred revenue was recognized during the third quarter of 2013. At the same time, $47,604 in capitalized expenses pertaining to the development of Mast OutÒ were written off.