SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS

12 Months Ended

Dec. 31, 2011

SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS

SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS

SCHEDULE II — VALUATION AND QUALIFYING ACCOUNTS
(All dollar amounts expressed in thousands of U.S. dollars)

	Balance at Beginning of Year		Charged to Costs and Expenses			Charged to Other Accounts			Deductions			Balance at End of Year
Year ended December 31, 2011
Allowance for doubtful accounts	$	6,692	$	1,467		$	4,669		$	(500	)	$	12,328
Allowance for inventory obsolescence	$	28,065	$	4,051		$	2,730		$	(12,027	)	$	22,819
Deferred tax asset valuation allowance	$	186,399	$	(35,062	)	$	41,517		$	(64,112	)	$	128,742
Year ended December 31, 2010
Allowance for doubtful accounts	$	2,437	$	531		$	7,138		$	(3,414	)	$	6,692
Allowance for inventory obsolescence	$	8,560	$	6,356		$	18,821		$	(5,672	)	$	28,065
Deferred tax asset valuation allowance	$	153,955	$	22,075		$	10,369		$	—		$	186,399
Year ended December 31, 2009
Allowance for doubtful accounts	$	1,179	$	1,304		$	—		$	(46	)	$	2,437
Allowance for inventory obsolescence	$	10,343	$	7,370		$	—		$	(9,153	)	$	8,560
Deferred tax asset valuation allowance	$	157,137	$	8,440		$	(11,622	)	$	—		$	153,955

        In the year ended December 31, 2011, the decline in the allowance for inventory obsolescence primarily reflected the write off of obsolete inventory against the allowance.