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Note 18 - Financial Instruments (Tables)
12 Months Ended
Dec. 31, 2012
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]
 
 
2012
 
 
 
 
 
 
 
 
 
Balance sheet
 
Fair
 
Derivative designated as hedging instrument
 
location
 
Value
 
 
 
 
 
 
 
 
 
Other assets
       
Interest rate swaps
 
(non-current)
  $ 358  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
 
 
Carrying value at
   
Fair value measurements
 
 
 
December 31, 2012
   
Level 1
   
Level 2
   
Level 3
 
 
 
 
   
 
   
 
   
 
 
 
 
 
   
 
 
 
   
 
 
Interest rate swap asset
  $ 358     $ -     $ 358     $ -  
Contingent consideration liability
    13,000       -       -       13,000  
Change In Fair Value Of Contingent Consideration Liability [Table Text Block]
Balance, December 31, 2011
 
$
 12,844 
 
Amounts recognized on acquisitions
 
 
 1,944 
 
Fair value adjustments (note 4)
 
 
 3,645 
 
Resolved and settled in cash
 
 
 (5,492)
 
Other
 
 
 59 
 
Balance, December 31, 2012
 
$
 13,000 
 
 
 
 
 
 
Less: current portion
 
$
 351 
 
Non-current portion
 
$
 12,649 
 
Fair Value, by Balance Sheet Grouping [Table Text Block]
 
2012
 
2011
 
 
Carrying
 
Fair
 
Carrying
 
Fair
 
 
amount
 
value
 
amount
 
value
 
 
 
 
   
 
   
 
   
 
 
Other receivables
  $ 6,328     $ 6,328     $ 6,684     $ 6,684  
Long-term debt
    337,205       347,319       316,415       332,918  
Convertible debentures
    77,000       86,048       77,000       83,930