Notes to Consolidated Financial Statements

For the years ended December 31, 2014 and 2013

21. Finance costs

  2014  2013 
Interest on long-term debt $67,614  $66,273 
Unwinding of discount on provisions 20,671  16,391 
Other charges 6,531  6,286 
Loss on redemption of Series C debentures [note 16] 12,135  — 
Foreign exchange gains (34,731) (27,378)
Interest on short-term debt 4,902  549 
Total $77,122  $62,121 

No borrowing costs were determined to be eligible for capitalization during the year.