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Acquisitions - Purchase Price Allocation (Details) (USD $) |  |  | 3 Months Ended |  | 4 Months Ended |  | 4 Months Ended |
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Jun. 30, 2012 | Dec. 31, 2011 | Jun. 30, 2012 Business Acquisition, Arminak & Associates [Member] | Feb. 23, 2012 Business Acquisition, Arminak & Associates [Member] | Feb. 23, 2012 Business Acquisition, Arminak & Associates [Member] Trademarks and Trade Names [Member] | Jun. 30, 2012 Business Acquisition, Arminak & Associates [Member] Customer Relationships [Member] | Feb. 23, 2012 Business Acquisition, Arminak & Associates [Member] Customer Relationships [Member] | Jun. 30, 2012 Business Acquisition, Arminak & Associates [Member] Technology and Other [Member] | Feb. 23, 2012 Business Acquisition, Arminak & Associates [Member] Technology and Other [Member]
Consideration |  |  |  |  |  |  |  |  |  |
Cash paid plus initial estimate of working capital adjustment |  |  |  | $ 58,860,000 |  |  |  |  |  |
Contingent consideration |  |  |  | 8,490,000 | [1] |  |  |  |  |
Total consideration |  |  |  | 67,350,000 |  |  |  |  |  |
Recognized amounts of identifiable assets acquired and liabilities assumed |  |  |  |  |  |  |  |  |  |
Receivables |  |  |  | 8,990,000 | [2] |  |  |  |  |
Inventories |  |  |  | 4,390,000 | [2] |  |  |  |  |
Intangible assets other than goodwill |  |  |  | 48,400,000 | [2],[3] |  |  |  |  |
Other assets |  |  |  | 2,450,000 | [2] |  |  |  |  |
Accounts payable and accrued liabilities |  |  |  | 4,240,000 | [2] |  |  |  |  |
Long-term liabilities |  |  |  | 1,610,000 | [2] |  |  |  |  |
Total identifiable net assets |  |  |  | 58,380,000 | [2] |  |  |  |  |
Redeemable noncontrolling interest |  |  |  | (25,630,000) | [2] |  |  |  |  |
Goodwill | 249,670,000 | 215,360,000 |  | 34,600,000 | [2],[4] |  |  |  |  |
Recognized amounts of identifiable assets acquired and liabilities assumed, less noncontrolling interest |  |  |  | 67,350,000 | [2] |  |  |  |  |
Contingent Consideration Arrangements |  |  |  |  |  |  |  |  |  |
Contingent consideration low value |  |  | 5,400,000 | 8,000,000 |  |  |  |  |  |
Contingent consideration high value |  |  | 6,400,000 | 9,000,000 |  |  |  |  |  |
Contingent consideration paid |  |  | 2,600,000 |  |  |  |  |  |  |
Acquired Intangible Assets Other than Goodwill |  |  |  |  |  |  |  |  |  |
Acquired Finite-lived Intangible Asset, Amount |  |  |  |  |  |  |  | 33,000,000 |  | 7,500,000
Acquired Indefinite-lived Intangible Asset, Amount |  |  |  |  |  | $ 7,900,000 |  |  |  |
Finite-Lived Intangible Assets, Useful Life |  |  |  |  |  |  | 10 years |  | 8 years |
[1] | The contingent consideration represented the Company's best estimate, based on its review, at the time of purchase, of the underlying potential obligations estimated at a range of $8 million to $9 million, of certain Seller tax-related liabilities for which the Company has indemnified the Sellers as part of the purchase agreement.
[2] | These amounts represent a preliminary allocation of the purchase price subject to finalization of post-closing procedures, which may result in further adjustments to the values presented above.
[3] | Consists of $33.0 million of customer relationships with an estimated 10 year useful life, $7.9 million of trademarks/trade names with an indefinite useful life and $7.5 million of technology and other intangible assets with an estimated 8 year useful life.
[4] | All of the preliminary goodwill was assigned to the Company's Packaging reportable segment and is expected to be deductible for tax purposes.

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