Description of Business and Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2012

Accounting Policies [Abstract]

Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]

Activity in our allowance for doubtful accounts was comprised of the following for the periods indicated:

	Year ended December 31,
	2012			2011			2010
	(In thousands)
Beginning balance	$	1,015		$	701		$	566
Additions		782			601			139
Deductions		(41	)		(287	)		(4	)
Ending balance	$	1,756		$	1,015		$	701

Schedule Of Depreciation [Table Text Block]

Depreciation of property, plant and equipment is recognized on a straight-line basis over the following estimated useful lives:

Class of assets	Useful life
Buildings and improvements	5 to 40 years
Machinery, equipment, and furniture and fixtures	3 to 10 years
Leasehold improvements	Shorter of asset life or term of lease

Schedule Of Non-Dilutive Instruments and Dilutive Common Stock Equivalents [Table Text Block]

The following table presents instruments which were not dilutive and were excluded from the computation of diluted EPS in each period, as well as the weighted average dilutive common stock equivalent shares which were included in the computation of diluted EPS:

	2012		2011		2010
	(In thousands)
Non-dilutive instruments		64		115		1,299
Dilutive common stock equivalents		319		244		108