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Segment and Geographic Information - Schedule of Financial and Other Information by Business Unit (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales | $ 434,811 | $ 456,648 | $ 425,967 | $ 405,189 | $ 391,389 | $ 404,354 | $ 384,693 | $ 397,352 | $ 1,722,615 | $ 1,577,788 | $ 1,603,154
Energy and related sales, net |  |  |  |  |  |  |  |  | 3,153 | 7,000 | 9,344
Total revenue |  |  |  |  |  |  |  |  | 1,725,768 | 1,584,788 | 1,612,498
Cost of products sold |  |  |  |  |  |  |  |  | 1,507,108 | 1,371,139 | 1,406,305
Gross profit | 54,406 | 66,039 | 40,840 | 57,375 | 52,609 | 59,192 | 40,878 | 60,970 | 218,660 | 213,649 | 206,193
SG&A |  |  |  |  |  |  |  |  | 133,867 | 121,590 | 124,871
Gains on dispositions of plant, equipment and timberlands, net |  |  |  |  |  |  |  |  | (1,726) | (9,815) | (3,950)
Total operating income (loss) |  |  |  |  |  |  |  |  | 86,519 | 101,874 | 85,272
Non-operating expense |  |  |  |  |  |  |  |  | (17,318) | (22,933) | (34,427)
Income (loss) before income taxes |  |  |  |  |  |  |  |  | 69,201 | 78,941 | 50,845
Supplementary Data |  |  |  |  |  |  |  |  |  |  |
Plant, equipment and timberlands, net | 723,340 |  |  |  | 621,186 |  |  |  | 723,340 | 621,186 | 602,000
Depreciation, depletion and amortization |  |  |  |  |  |  |  |  | 68,196 | 69,500 | 69,313
Capital expenditures |  |  |  |  |  |  |  |  | 103,000 | 58,800 | 64,500
Composite Fibers [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 566,400 | 436,700 | 476,000
Energy and related sales, net |  |  |  |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  |  |  | 566,400 | 436,700 | 476,000
Cost of products sold |  |  |  |  |  |  |  |  | 456,500 | 362,600 | 395,700
Gross profit |  |  |  |  |  |  |  |  | 109,800 | 74,200 | 80,300
SG&A |  |  |  |  |  |  |  |  | 47,400 | 38,100 | 39,500
Gains on dispositions of plant, equipment and timberlands, net |  |  |  |  |  |  |  |  |  |  |
Total operating income (loss) |  |  |  |  |  |  |  |  | 62,400 | 36,100 | 40,800
Non-operating expense |  |  |  |  |  |  |  |  |  |  |
Income (loss) before income taxes |  |  |  |  |  |  |  |  | 62,400 | 36,100 | 40,800
Supplementary Data |  |  |  |  |  |  |  |  |  |  |
Plant, equipment and timberlands, net | 300,000 |  |  |  | 200,100 |  |  |  | 300,000 | 200,100 | 176,200
Depreciation, depletion and amortization |  |  |  |  |  |  |  |  | 24,800 | 23,500 | 24,800
Capital expenditures |  |  |  |  |  |  |  |  | 56,900 | 31,400 | 22,500
Advanced Airlaid Materials [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 268,400 | 246,300 | 252,000
Energy and related sales, net |  |  |  |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  |  |  | 268,400 | 246,300 | 252,000
Cost of products sold |  |  |  |  |  |  |  |  | 238,000 | 218,700 | 227,700
Gross profit |  |  |  |  |  |  |  |  | 30,400 | 27,600 | 24,300
SG&A |  |  |  |  |  |  |  |  | 8,900 | 9,600 | 10,900
Gains on dispositions of plant, equipment and timberlands, net |  |  |  |  |  |  |  |  |  |  |
Total operating income (loss) |  |  |  |  |  |  |  |  | 21,500 | 18,000 | 13,400
Non-operating expense |  |  |  |  |  |  |  |  |  |  |
Income (loss) before income taxes |  |  |  |  |  |  |  |  | 21,500 | 18,000 | 13,400
Supplementary Data |  |  |  |  |  |  |  |  |  |  |
Plant, equipment and timberlands, net | 175,100 |  |  |  | 172,900 |  |  |  | 175,100 | 172,900 | 175,600
Depreciation, depletion and amortization |  |  |  |  |  |  |  |  | 8,900 | 8,700 | 8,500
Capital expenditures |  |  |  |  |  |  |  |  | 6,700 | 3,900 | 10,600
Specialty Papers [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 887,900 | 894,800 | 875,100
Energy and related sales, net |  |  |  |  |  |  |  |  | 3,200 | 7,000 | 9,300
Total revenue |  |  |  |  |  |  |  |  | 891,000 | 901,800 | 884,400
Cost of products sold |  |  |  |  |  |  |  |  | 799,300 | 779,500 | 775,700
Gross profit |  |  |  |  |  |  |  |  | 91,700 | 122,300 | 108,700
SG&A |  |  |  |  |  |  |  |  | 52,000 | 55,000 | 51,400
Gains on dispositions of plant, equipment and timberlands, net |  |  |  |  |  |  |  |  |  |  |
Total operating income (loss) |  |  |  |  |  |  |  |  | 39,700 | 67,300 | 57,300
Non-operating expense |  |  |  |  |  |  |  |  |  |  |
Income (loss) before income taxes |  |  |  |  |  |  |  |  | 39,700 | 67,300 | 57,300
Supplementary Data |  |  |  |  |  |  |  |  |  |  |
Plant, equipment and timberlands, net | 242,600 |  |  |  | 247,900 |  |  |  | 242,600 | 247,900 | 250,200
Depreciation, depletion and amortization |  |  |  |  |  |  |  |  | 33,200 | 37,400 | 36,000
Capital expenditures |  |  |  |  |  |  |  |  | 34,300 | 23,100 | 31,400
Other and Unallocated [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |
Energy and related sales, net |  |  |  |  |  |  |  |  |  |  |
Total revenue |  |  |  |  |  |  |  |  |  |  |
Cost of products sold |  |  |  |  |  |  |  |  | 13,300 | 10,300 | 7,200
Gross profit |  |  |  |  |  |  |  |  | (13,300) | (10,400) | (7,200)
SG&A |  |  |  |  |  |  |  |  | 25,500 | 18,900 | 23,000
Gains on dispositions of plant, equipment and timberlands, net |  |  |  |  |  |  |  |  | (1,700) | (9,800) | (4,000)
Total operating income (loss) |  |  |  |  |  |  |  |  | (37,100) | (19,500) | (26,200)
Non-operating expense |  |  |  |  |  |  |  |  | (17,300) | (22,900) | (34,400)
Income (loss) before income taxes |  |  |  |  |  |  |  |  | (54,400) | (42,400) | (60,700)
Supplementary Data |  |  |  |  |  |  |  |  |  |  |
Plant, equipment and timberlands, net | 5,600 |  |  |  | 300 |  |  |  | 5,600 | 300 |
Depreciation, depletion and amortization |  |  |  |  |  |  |  |  | 1,300 |  |
Capital expenditures |  |  |  |  |  |  |  |  | $ 5,100 | $ 300 |

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