BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Dec. 31, 2011

Inventories

Inventories included on the consolidated balance sheets consist of:

	December 31,
(in thousands of U.S. dollars)	2011		2010
Raw materials	$	28,075	$	27,035
Work in progress		13,045		14,952
Inventories	$	41,120	$	41,987

Summary of Costs and Ranges of Useful Lives of Major Classes of Property, Plant and Equipment and Total Accumulated Depreciation Related to Property, Plant and Equipment, Net

The following table summarizes the cost and ranges of useful lives of the major classes of property, plant and equipment and the total accumulated depreciation related to the Property, plant and equipment, net included on the consolidated balance sheets:

		December 31,
	Useful Lives	2011			2010
	(in years)	(in thousands of U.S. dollars)
Land, at cost	N/A	$	7,167		$	7,195
Buildings, at cost	10 – 30		37,511			37,657
Machinery and equipment, at cost	3 – 20		217,764			225,762
Office furniture and equipment, at cost	3 – 10		236,994			221,804
Leasehold improvements, at cost	5 – 10		28,563			28,174
			527,999			520,592
Less accumulated depreciation			(379,094	)		(345,025	)
Property, plant and equipment, net		$	148,905		$	175,567

Accumulated Other Comprehensive Income

Accumulated other comprehensive income included the following:

	December 31,
(in thousands of U.S. dollars)	2011			2010
Unrealized changes in fair value of cash flow hedges	$	(2,863	)	$	(2,787	)
Unrealized changes in fair value of available for sale securities		—			117
Foreign currency translation		5,638			5,969
Accumulated other comprehensive income, net of tax of $1,768 and $1,764 as of December 31, 2011 and 2010, respectively	$	2,775		$	3,299