Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2011

Valuation and Qualifying Accounts [Abstract]

Valuation and Qualifying Accounts

15. Valuation and Qualifying Accounts

For the years ended December 31, 2011, 2010 and 2009 (dollars in thousands):

	Balance at Beginning of Period		Reserves Assumed in Acquisition		Additions Charged to Earnings			Charges to Reserve, Net (1)			Balance at End of Year
Year ended December 31, 2011
Allowance for doubtful accounts	$	723	$	171	$	(7	)	$	(98	)	$	789
Reserves for inventory		4,059		657		1,092			(1,091	)		4,717
Valuation of deferred tax assets		271,393		–		(271,393	)		–			–
Year ended December 31, 2010
Allowance for doubtful accounts	$	1,016		–	$	(124	)	$	(169	)	$	723
Allowance for doubtful notes		965		–		–			(965	)		-
Reserves for inventory		3,937		–		1,056			(934	)		4,059
Valuation of deferred tax assets		289,529		–		(18,136	)		–			271,393
Year ended December 31, 2009
Allowance for doubtful accounts	$	1,020		–	$	227		$	(231	)	$	1,016
Allowance for doubtful notes		965		–		-			–			965
Reserves for inventory		4,908		–		548			(1,519	)		3,937
Valuation of deferred tax assets		292,372		–		(2,843	)		–			289,529

(1) Deductions from the allowance for doubtful accounts equal accounts receivable written off, less recoveries, against the allowance. Deductions from the reserves for inventory excess and obsolete items equal inventory written off against the reserve as items were disposed of. Deductions to the valuation of deferred tax assets relate to the reversals due to changes in management's judgments regarding the future realization of the underlying deferred tax assets.