SHAREHOLDERS' EQUITY (Tables)

12 Months Ended

Dec. 31, 2011

SHAREHOLDERS' EQUITY

Components of accumulated other comprehensive income (loss), net of related tax effects

	2011			2010
Cumulative translation adjustment from electing US dollar as principal reporting currency	$	(16,206	)	$	(16,206	)
Unrealized net gain on available-for-sale securities		16,350			48,151
Unrealized loss on derivative contracts		(4,404	)		—
Unrealized loss on pension liability		(5,219	)		(4,420	)
Tax effect of unrealized loss on derivative contracts		1,491			—
Tax effect of unrealized loss on pension liability		882			865
	$	(7,106	)	$	28,390

Schedule of reconciliation for weighted average number of common shares in calculation of basic and diluted income per share

	2011		2010		2009
Weighted average number of common shares outstanding — basic		169,352,896		162,342,686		155,942,151
Add: Dilutive impact of employee stock options		—		1,192,530		1,256,103
Dilutive impact of warrants		—		2,263,902		1,392,752
Dilutive impact of shares related to RSU plan		—		43,141		29,882
Weighted average number of common shares outstanding — diluted		169,352,896		165,842,259		158,620,888