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Restructuring and Business Realignment Charges (Details Textual) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended					3 Months Ended		9 Months Ended
	Sep. 30, 2012 Pst Segment [Member]	Sep. 30, 2012 Pst Segment [Member]	Sep. 30, 2012 Other Liabilities [Member]	Dec. 31, 2011 Other Liabilities [Member]	Sep. 30, 2012 Facility Closing [Member]	Dec. 31, 2011 Facility Closing [Member]	Sep. 30, 2012 Selling, General and Administrative Expenses [Member]	Sep. 30, 2011 Selling, General and Administrative Expenses [Member]	Sep. 30, 2012 Selling, General and Administrative Expenses [Member]	Sep. 30, 2011 Selling, General and Administrative Expenses [Member]
Restructuring and Related Cost, Incurred Cost							$ 90	$ 0	$ 160	$ 0
Restructuring Reserve			411	467	756	1,920
Business Realignment Charges	$ 0	$ 1,646					$ 0		$ 729

- Definition

Discloses the amount charged against the accrued restructuring reserves, or earnings if not previously accrued, during the period for the specified type of restructuring cost.

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