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Bank Indebtedness and Long-Term Debt (Tables)
9 Months Ended
Sep. 30, 2017
Short-term Debt [Abstract]  
Schedule Of Line Of Credit Facilities And Long Term Debt [Table Text Block]
September 30, 2017December 31, 2016
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Bank indebtedness:
Global Credit Facility(1)256,444199,281
Bulgarian credit facility(2)2,5642,213
259,008201,494
Long-term debt:
Senior Secured Second Lien Notes, net of unamortized debt issuance costs
of $8,217 (December 31, 2016 - $8,835)(3)222,781222,163
Capital lease obligations6,1847,454
Other1,8411,470
230,806231,087
Less: current portion2,0452,079
228,761229,008