Business Acquisitions (Details) (USD $)			7 Months Ended		7 Months Ended		7 Months Ended
	Jan. 31, 2012 Elian S.A.S. [Member]	Sep. 04, 2012 E.C.M. Plastics Inc. [Member]	Aug. 31, 2012 Customer Related Intangibles [Member] Elian S.A.S. [Member]	Jan. 31, 2012 Customer Related Intangibles [Member] Elian S.A.S. [Member]	Aug. 31, 2012 Developed Technology [Member] Elian S.A.S. [Member]	Jan. 31, 2012 Developed Technology [Member] Elian S.A.S. [Member]	Aug. 31, 2012 Trademarks and Tradenames [Member] Elian S.A.S. [Member]	Jan. 31, 2012 Trademarks and Tradenames [Member] Elian S.A.S. [Member]
Business Acquisitions
Purchase consideration	$ 66,545,000	$ 36,400,000
Repayment of debt of acquired entity included in purchase consideration	4,300,000
Cash and cash equivalents	1,624,000
Accounts receivable	6,897,000
Inventories	3,427,000
Prepaid expenses and other current assets	434,000
Property, plant and equipment	5,111,000
Intangible assets	27,779,000			18,300,000		8,600,000		900,000
Other long-term assets	20,000
Total assets acquired	45,292,000
Accounts payable	4,907,000
Other accrued liabilities	3,106,000
Deferred income taxes	10,598,000
Pension plans	711,000
Other long-term liabilities	143,000
Total liabilities assumed	19,465,000
Net identifiable assets acquired	25,827,000
Goodwill	40,718,000
Finite-lived intangible asset, useful life			9 years		10 years		5 years
Gross contractual amount of acquired receivables	$ 7,300,000