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Acquisitions - Additional Information (Detail) $ in Thousands |  |  | 8 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Oct. 01, 2014 USD ($) | Apr. 30, 2013 USD ($) | Dec. 31, 2013 USD ($) | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($) Employees t
Business Acquisition [Line Items] |  |  |  |  |  |
Revenue |  |  |  | $ 1,666,748 | $ 1,810,342 | $ 1,725,768
Payment made for acquisition, net of cash acquired |  |  |  | $ 224 | 8,015 | 210,911
Revenue |  |  |  |  |  | 1,779,434
Remaining useful life of intangible assets |  |  |  | 17 years |  |
Goodwill |  |  |  | $ 76,056 | 84,137 |
Intangible assets |  |  |  | 87,596 |  |
Identifiable intangible assets |  |  |  | 9,800 |  |
Operating income |  |  |  | $ 96,372 | 106,780 | 86,519
Acquisition related costs |  |  |  |  |  | 3,200
Fair value write up of acquired inventory |  |  |  |  |  | 1,100
Integration related costs |  |  |  |  |  | 2,000
Minimum [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Useful life of property plant and equipment |  |  |  | 5 years |  |
Maximum [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Useful life of property plant and equipment |  |  |  | 30 years |  |
Dresden Papier GmbH [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Date of acquisition |  |  |  | Apr. 30, 2013 |  |
Revenue |  |  | $ 101,800 |  |  |
Payment made for acquisition, net of cash acquired |  | $ 211,000 |  |  |  |
Revenue |  |  |  |  |  | $ 158,600
Number of employees | Employees |  |  |  |  |  | 146
Manufacturing capacity | t |  |  |  |  |  | 72,800
Goodwill |  |  |  | $ 74,900 |  |
Intangible assets |  |  |  | $ 87,600 |  |
Operating income |  |  | $ 18,300 |  |  |
Spezialpapierfabrik Oberschmitten GmbH [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Date of acquisition |  |  |  | Oct. 01, 2014 |  |
Payment made for acquisition | $ 8,000 |  |  |  |  |
Revenue |  |  |  |  | $ 33,000 |

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- Definition Date when the acquirer obtains control of the acquiree, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=34752592&loc=d3e845-128460 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Acquisition Date -URI http://asc.fasb.org/extlink&oid=6919109 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=34752592&loc=d3e848-128460 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56956515&loc=d3e1392-128463 + Details
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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=34752592&loc=d3e1043-128460 + Details
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