Note 19 - Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2015

Disclosure Text Block Supplement [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

	Carrying value at		Fair value measurements
	December 31, 2015		Level 1		Level 2		Level 3
Contingent consideration liability	$	29,119	$	-	$	-	$	29,119

Schedule of Business Acquisitions by Acquisition, Contingent Consideration [Table Text Block]

Balance, December 31, 2014	$	21,041
Amounts recognized on acquisitions		14,566
Fair value adjustments (note 5)		383
Resolved and settled in cash		(6,083	)
Other		(788	)
Balance, December 31, 2015	$	29,119
Less: current portion	$	1,552
Non-current portion	$	27,567

Fair Value, by Balance Sheet Grouping [Table Text Block]

	2015				2014
		Carrying amount		Fair value		Carrying amount		Fair value
Other receivables	$	3,922	$	3,922	$	10,039	$	10,039
Marketable securities		4,175		4,175		-		-
Long-term debt		260,947		260,947		493,348		513,128