Magnera (MAGN) 10-Q 6 Nov 18 2018 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2018	Oct. 29, 2018
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q3
Trading Symbol	GLT
Entity Registrant Name	GLATFELTER P H CO
Entity Central Index Key	41,719
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		43,782,109

Condensed Consolidated Statemen

Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Income Statement [Abstract]
Net sales	$ 209,855	$ 210,120	$ 636,806	$ 591,035
Type of Revenue [Extensible List]	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember
Costs of products sold	$ 179,983	$ 172,745	$ 537,073	$ 485,783
Type of Cost, Good or Service [Extensible List]	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember
Gross profit (loss)	$ 29,872	$ 37,375	$ 99,733	$ 105,252
Selling, general and administrative expenses	25,799	27,083	81,915	81,530
Gains on dispositions of plant, equipment and timberlands, net	(249)	(93)	(1,939)	(168)
Operating income (loss)	4,322	10,385	19,757	23,890
Non-operating income (expense)
Interest expense	(3,965)	(3,324)	(11,237)	(10,025)
Interest income	147	51	227	209
Other, net	2,253	(387)	1,131	(558)
Total non-operating expense	(1,565)	(3,660)	(9,879)	(10,374)
Income (loss) before income taxes	2,757	6,725	9,878	13,516
Income tax provision	3,462	1,680	7,037	4,429
Income (loss) from continuing operations	(705)	5,045	2,841	9,087
Discontinued operations:
Income (loss) before income taxes	(114,656)	9,661	(128,714)	14,422
Income tax provision (benefit)	(19,530)	2,601	(28,361)	5,515
Income (loss) from discontinued operations	(95,126)	7,060	(100,353)	8,907
Net income (loss)	$ (95,831)	$ 12,105	$ (97,512)	$ 17,994
Basic earnings (loss) per share
Income (loss) from continuing operations	$ (0.02)	$ 0.12	$ 0.06	$ 0.21
Income (loss) from discontinued operations	(2.17)	0.16	(2.29)	0.20
Basic earnings (loss) per share	(2.19)	0.28	(2.23)	0.41
Diluted earnings (loss) per share
Income (loss) from continuing operations	(0.02)	0.11	0.06	0.21
Income (loss) from discontinued operations	(2.17)	0.16	(2.29)	0.20
Diluted earnings (loss) per share	(2.19)	0.27	(2.23)	0.41
Cash dividends declared per common share	$ 0.13	$ 0.13	$ 0.39	$ 0.39
Weighted average shares outstanding
Basic	43,792	43,617	43,754	43,601
Diluted	43,792	44,182	43,754	44,410

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ (95,831)	$ 12,105	$ (97,512)	$ 17,994
Foreign currency translation adjustments	(3,217)	16,559	(23,693)	50,128
Net change in:
Deferred gains (losses) on cash flow hedges, net of taxes of $(582), $111, $(1,718) and $2,031, respectively	1,616	(1,514)	4,363	(6,111)
Unrecognized retirement obligations, net of taxes of $(1,004), $(1,340), $(2,946) and $(4,018), respectively	21,572	2,285	27,668	6,838
Other comprehensive income	19,971	17,330	8,338	50,855
Comprehensive income (loss)	$ (75,860)	$ 29,435	$ (89,174)	$ 68,849

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Statement Of Income And Comprehensive Income [Abstract]
Taxes on deferred gains (losses) on cash flow hedges	$ (582)	$ 111	$ (1,718)	$ 2,031
Taxes on unrecognized retirement obligations	$ (1,932)	$ (1,340)	$ (3,874)	$ (4,018)

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Assets
Cash and cash equivalents	$ 234,070	$ 116,219
Accounts receivable, net	117,584	110,586
Inventories	170,986	136,201
Prepaid expenses and other current assets	30,245	32,013
Current assets held for sale	188,322	189,952
Total current assets	741,207	584,971
Plant, equipment and timberlands, net	497,568	515,183
Goodwill	79,882	82,744
Intangible assets, net	53,444	58,859
Other assets	106,943	81,127
Noncurrent assets held for sale	271,731	407,911
Total assets	1,750,775	1,730,795
Liabilities and Shareholders' Equity
Current portion of long-term debt	10,904	11,298
Accounts payable	103,432	113,212
Dividends payable	5,696	5,678
Environmental liabilities	26,000	28,500
Other current liabilities	74,203	75,668
Current liabilities held for sale	110,163	112,820
Total current liabilities	330,398	347,176
Long-term debt	635,406	470,098
Deferred income taxes	56,599	83,571
Other long-term liabilities	80,946	79,649
Long-term liabilities held for sale	40,480	41,373
Total liabilities	1,143,829	1,021,867
Commitments and contingencies
Shareholders’ equity
Common stock	544	544
Capital in excess of par value	64,329	62,594
Retained earnings	856,118	948,411
Accumulated other comprehensive loss	(154,635)	(140,675)
Shareholders' equity before treasury stock	766,356	870,874
Less cost of common stock in treasury	(159,410)	(161,946)
Total shareholders’ equity	606,946	708,928
Total liabilities and shareholders’ equity	$ 1,750,775	$ 1,730,795

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Operating activities
Net income (loss)	$ (97,512)	$ 17,994
(Income) loss from discontinued operations, net of tax benefits	100,353	(8,907)
Adjustments to reconcile to net cash provided by continuing operations:
Depreciation, depletion and amortization	34,731	30,276
Amortization of debt issue costs and original issue discount	870	868
Deferred income tax benefit	(5,466)	(1,233)
Gains on dispositions of plant, equipment and timberlands, net	(1,939)	(168)
Share-based compensation	4,594	4,331
Change in operating assets and liabilities
Accounts receivable	(10,421)	(16,125)
Inventories	(40,314)	(4,051)
Prepaid and other current assets	(2,935)	(3,280)
Accounts payable	(2,019)	6,099
Accruals and other current liabilities	3,768	(2,756)
Other	78	(2,547)
Net cash (used) provided by operating activities from continuing operations	(16,212)	20,501
Investing activities
Expenditures for purchases of plant, equipment and timberlands	(32,155)	(57,978)
Proceeds from disposals of plant, equipment and timberlands, net	2,073	209
Other	(68)	(100)
Net cash used by investing activities from continuing operations	(30,150)	(57,869)
Financing activities
Net borrowings under revolving credit facility	174,761	96,534
Repayment of term loans	(8,373)	(6,947)
Payments of dividends	(17,064)	(16,805)
Payments related to share-based compensation awards and other	(1,008)	(128)
Net cash provided by financing activities from continuing operations	148,316	72,654
Effect of exchange rate changes on cash	(3,931)	5,448
Net increase in cash and cash equivalents	98,023	40,734
Change in cash and cash equivalents from discontinued operations	19,828	(11,891)
Cash and cash equivalents at the beginning of period	116,219	55,444
Cash and cash equivalents at the end of period	234,070	84,287
Cash paid for:
Interest, net of amounts capitalized	7,213	6,521
Income taxes, net	$ 11,001	$ 7,567

Organization

Organization	9 Months Ended
	Sep. 30, 2018
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Organization	1. ORGANIZATION P. H. Glatfelter Company and subsidiaries is a leading global supplier of high-quality, innovative and customizable solutions found in tea and single-serve coffee filtration, personal hygiene and packaging products as well as home improvement and industrial applications. We are headquartered in York, PA, and operate facilities in the United States, Canada, Germany, France, the United Kingdom and the Philippines. We have sales and distribution offices in the U.S., Europe, Russia and China and our products are marketed worldwide, either directly to customers or through brokers and agents. The terms “we,” “us,” “our,” “the Company,” or “Glatfelter,” refer to P. H. Glatfelter Company and subsidiaries unless the context indicates otherwise.

Accounting Policies

Accounting Policies	9 Months Ended
	Sep. 30, 2018
Accounting Policies [Abstract]
Accounting Policies	2. ACCOUNTING POLICIES Basis of Presentation The unaudited condensed consolidated financial statements (“financial statements”) include the accounts of Glatfelter and its wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated. We prepared these financial statements in accordance with accounting principles generally accepted in the United States of America (“generally accepted accounting principles” or “GAAP”) and pursuant to the rules and regulations of the Securities and Exchange Commission pertaining to interim financial statements. In our opinion, the financial statements reflect all normal, recurring adjustments needed to present fairly our results for the interim periods. When preparing these financial statements, we have assumed that you have read the audited consolidated financial statements included in our 2017 Annual Report on Form 10-K. Discontinued Operations The results of operations for our Specialty Papers Business Unit have been classified as discontinued operations for all periods presented in the condensed consolidated statements of income. In addition, the related assets and liabilities of this business unit have been classified as held for sale in the condensed consolidated balance sheets for all periods presented. Reclassification As a result of adopting the provisions of Accounting Standards Update (“ASU”) No. 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Cost we reclassified certain amounts of periodic benefit expense for previously reported periods from Cost of products sold and Selling, general and administrative expense to Non-operating Expense. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingencies as of the balance sheet date and the reported amounts of revenues and expenses during the reporting period. Management believes the estimates and assumptions used in the preparation of these financial statements are reasonable, based upon currently available facts and known circumstances, but recognizes that actual results may differ from those estimates and assumptions. Revenue Recognition We adopted ASU No. 2014-09, Revenue from Contracts with Customers in the first quarter of 2018. This ASU clarifies the principles for recognizing revenue and establishes expanded disclosure requirements; however, the adoption of ASU No. 2014-09 had no impact on the timing or amount of revenue recognized for any period presented. Refer to Note 4 for additional information about the disaggregation of our net sales. Our revenue is earned primarily from the manufacture and sale of engineered materials (“product sales”). Revenue is earned pursuant to contracts, supply agreements and other arrangements with a wide variety of customers. Our performance obligation is to produce a specified product according to technical specifications and, in substantially all instances, to deliver the product. Revenue from product sales is earned at a point in time. We recognize revenue on product sales when we have satisfied our performance obligation and control of the product has passed to the customer thereby entitling us to payment. With respect to substantially all arrangements for product sales, this is deemed to occur when title transfers in accordance with specified shipping terms. The prices are fixed at the time the sales arrangement is entered into and payment terms are customary for similar arrangements in our industry. Many of our agreements include customary provisions for volume rebates, discounts and similar incentives. In addition, we are obligated for products that fail to meet agreed upon specification. Provisions for such items are estimated and recorded as sales deductions in the period in which the related revenue is recognized. Recently Issued Accounting Pronouncements In February 2018, the FASB issued ASU No. 2018-02, “Reclassification of Certain Tax Effects From Accumulated Other Comprehensive Income. (“ASU No. 2018-02” ).” In December 2017, Tax Cuts and Jobs Act (“TCJA”) was passed into law and, among other provisions, reduced the statutory federal tax rate from 35% to 21%. The change in the tax rate impacted the carrying value of deferred tax assets and liabilities. ASU No. 2018-02 allows a reclassification from accumulated other comprehensive income (“AOCI”) to retained earnings for stranded tax effects resulting from the TCJA. We elected to adopt ASU No. 2018-02 in the first quarter of 2018, and we reclassified $22.3 million of net deferred tax benefits from AOCI to Retained earnings. In February 2016, the FASB issued ASU No. 2016-02, “ Leases (Topic 842) In August 2017, the FASB issued ASU No. 2017-12, "Derivatives and Hedging (Topic 815), Targeted Improvements to Accounting for Hedging Activities" In June 2016, the FASB issued ASU No. 2016-13 “ Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments”

Acquisition

Acquisition	9 Months Ended
	Sep. 30, 2018
Business Combinations [Abstract]
Acquisition	3. ACQUISITION On October 1, 2018, we completed our acquisition of Georgia-Pacific’s European nonwovens business (the “GP Business”) for $186 million including a working capital adjustment and subject to customary post-closing purchase price adjustments. The acquisition consisted of Georgia-Pacific’s operations located in Steinfurt, Germany, along with sales offices located in France and Italy. The Steinfurt facility produces high-quality airlaid products for the table-top, wipes, hygiene, food pad, and other nonwoven materials markets, competing in the marketplace with nonwoven technologies and substrates, as well as other materials focused primarily on consumer based end-use applications. The facility is a state-of-the-art, 32,000-metric-ton-capacity manufacturing facility that employs approximately 220 people. Steinfurt’s results will be reported prospectively from the acquisition date as part of our Advanced Airlaid Materials business unit. In 2017, the GP Business had net sales of $99 million. We financed the transaction through a combination of cash on hand and borrowings under our revolving credit facility. We have not provided the additional disclosure requirements required under ASC No. 805 “ Business Combinations

Revenue

Revenue	9 Months Ended
	Sep. 30, 2018
Disaggregation Of Revenue [Abstract]
Revenue	4. REVENUE The following tables set forth disaggregated information pertaining to our net sales: Three months ended September 30 Nine months ended September 30 In thousands 2018 2017 2018 2017 Composite Fibers Food & beverage $ 68,534 $ 66,539 $ 209,117 $ 194,575 Wallcovering 26,135 28,365 82,056 76,993 Technical specialties 20,615 21,309 63,182 56,692 Composite laminates 10,544 10,558 28,902 28,652 Metallized 13,348 15,578 40,450 43,678 139,176 142,349 423,707 400,590 Advanced Airlaid Materials Feminine hygiene 46,054 46,623 141,464 133,550 Specialty wipes 11,104 8,899 29,366 21,941 Adult incontinence 5,036 3,761 14,658 10,625 Home care 4,009 3,715 11,911 9,642 Other 4,476 4,773 15,700 14,687 70,679 67,771 213,099 190,445 TOTAL $ 209,855 $ 210,120 $ 636,806 $ 591,035 Three months ended September 30 Nine months ended September 30 In thousands 2018 2017 2018 2017 Composite Fibers Europe, Middle East and Africa $ 87,870 $ 91,944 $ 274,442 $ 259,532 Americas 30,205 26,198 83,245 76,734 Asia Pacific 21,101 24,207 66,020 64,324 139,176 142,349 423,707 400,590 Advanced Airlaid Materials Europe, Middle East and Africa 35,283 36,025 107,416 98,158 Americas 34,899 31,297 104,027 91,229 Asia Pacific 497 449 1,656 1,058 70,679 67,771 213,099 190,445 TOTAL $ 209,855 $ 210,120 $ 636,806 $ 591,035

Discontinued Operations

Discontinued Operations	9 Months Ended
	Sep. 30, 2018
Discontinued Operations And Disposal Groups [Abstract]
Discontinued Operations	5. DISCONTINUED OPERATIONS On October 31, 2018, we completed the previously announced sale of our Specialty Papers Business Unit on a cash free and debt free basis to Pixelle Specialty Solutions LLC, an affiliate of Lindsay Goldberg (the “Purchaser”) for $360 million. Cash proceeds from the sale were approximately $323 million in cash reflecting estimated purchase price adjustments as of the closing date and the assumption by the Purchaser of approximately $38 million in retiree healthcare liabilities. In addition, the Purchaser assumed approximately $220 million of pension liabilities relating to Specialty Papers’ employees and will receive approximately $270 million of related assets from the Company’s existing pension plan. In connection with the sale of Specialty Papers, we entered into a Transition Services Agreement with Purchaser pursuant to which we agreed to provide various back-office and information technology support until the business is fully separated from us. The following table sets forth a summary of discontinued operations included in the condensed consolidated statements of income: Three months ended September 30 Nine months ended September 30 In thousands 2018 2017 2018 2017 Net sales $ 201,288 $ 203,206 $ 590,757 $ 600,346 Energy and related sales, net 844 1,236 3,217 3,346 Total revenues 202,132 204,442 593,974 603,692 Costs of products sold 181,628 188,076 572,820 569,840 Gross profit 20,504 16,366 21,154 33,852 Selling, general and administrative expenses 6,058 5,997 18,566 17,971 (Gains) losses on dispositions of plant, equipment and timberlands, net 3 70 (440 ) 118 Operating income 14,443 10,299 3,028 15,763 Non-operating income (expense) Interest expense (2,281 ) (1,221 ) (6,017 ) (3,005 ) Other, net (1,174 ) 583 (81 ) 1,664 Impairment charge (125,644 ) — (125,644 ) — Income (loss) before income taxes (114,656 ) 9,661 (128,714 ) 14,422 Income tax provision (benefit) (19,530 ) 2,601 (28,361 ) 5,515 Income (loss) from discontinued operations $ (95,126 ) $ 7,060 $ (100,353 ) $ 8,907 The amounts presented above are derived from the segment reporting for Specialty Papers adjusted to include certain retirement benefit costs and to exclude corporate shared services costs which are required to remain in continuing operations. Interest expense was allocated to discontinued operations based on borrowings under the revolving credit facility required to be repaid with proceeds from the sale of Specialty Papers. The amounts set forth above include the recognition of a $1.8 million, pre-tax, pension curtailment charge related to the transfer and discontinuance of future service of Specialty Papers’ employees. We also recognized an impairment charge representing an estimate of the amount by which the carrying value of Specialty Papers’ net assets exceeded their fair value based on the estimated net proceeds to be received from the sale. The following table sets forth the carrying amounts of Specialty Papers’ major asset and liabilities, which were classified as held for sale in the condensed consolidated balance sheets: September 30 December 31 In thousands 2018 2017 Assets Accounts receivable, net $ 73,608 $ 63,567 Inventories 105,311 115,858 Prepaid expenses and other current assets 9,403 10,527 Current assets held for sale $ 188,322 $ 189,952 Plant, equipment and timberlands, net 210,891 350,560 Other assets 60,840 57,351 Noncurrent assets held for sale $ 271,731 $ 407,911 Liabilities Accounts payable $ 76,257 $ 77,266 Other current liabilities 33,906 35,554 Current liabilities held for sale $ 110,163 $ 112,820 Long-term liabilities held for sale $ 40,480 $ 41,373 The following table sets forth a summary of cash flows from discontinued operations which is included in the condensed consolidated statements of cash flows: Nine months ended September 30 In thousands 2018 2017 Net cash provided by operating activities $ 33,721 $ 32,295 Net cash used in investing activities (14,018 ) (44,186 ) Net cash provided by financing activities 125 $ — Change in cash and cash equivalents from discontinued operations $ 19,828 $ (11,891 )

Gains on Dispositions of Plant,

Gains on Dispositions of Plant, Equipment and Timberlands	9 Months Ended
	Sep. 30, 2018
Property Plant And Equipment [Abstract]
Gains on Dispositions of Plant, Equipment and Timberlands	6. GAINS ON DISPOSITION OF PLANT, EQUIPMENT AND TIMBERLANDS During the first nine months of 2018 and 2017 we completed the following sales of timberlands and other assets: Dollars in thousands Acres Proceeds Gain (loss) 2018 Timberlands 1,103 $ 2,046 $ 1,929 Other n/a 27 10 Total $ 2,073 $ 1,939 2017 Timberlands 332 $ 209 $ 188 Other n/a - (20 ) Total $ 209 $ 168

Earnings Per Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2018
Earnings Per Share [Abstract]
Earnings Per Share	7. EARNINGS PER SHARE The following table sets forth the details of basic and diluted earnings per share (“EPS”) from continuing operations: Three months ended September 30 In thousands, except per share 2018 2017 Income (loss) from continuing operations $ (705 ) $ 5,045 Weighted average common shares outstanding used in basic EPS 43,792 43,617 Effect of dilutive SOSARs, PSAs and RSUs — 565 Weighted average common shares outstanding and common share equivalents used in diluted EPS 43,792 44,182 Earnings (loss) per share from continuing operations Basic $ (0.02 ) $ 0.12 Diluted (0.02 ) 0.11 Nine months ended September 30 In thousands, except per share 2018 2017 Income from continuing operations $ 2,841 $ 9,087 Weighted average common shares outstanding used in basic EPS 43,754 43,601 Effect of dilutive SOSARs, PSAs and RSUs — 809 Weighted average common shares outstanding and common share equivalents used in diluted EPS 43,754 44,410 Earnings per share from continuing operations Basic $ 0.06 $ 0.21 Diluted 0.06 0.21 The denominator used to compute per share amounts of loss from discontinued operations is the same as the denominator used for per share amount of income from continuing operations. The numerator used to compute per share income or loss from discontinued operations is summarized below: 2018 2017 In thousands Three months ended September 30 Income (loss) $ (95,126 ) $ 7,060 Nine months ended September 30 Income (loss) $ (100,353 ) $ 8,907 The following table sets forth potential common shares outstanding that were not included in the computation of diluted EPS for the periods indicated, because their effect would be anti-dilutive: September 30 In thousands 2018 2017 Three months ended 2,393 967 Nine months ended 2,393 593

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income	9 Months Ended
	Sep. 30, 2018
Equity [Abstract]
Accumulated Other Comprehensive Income	8 . ACCUMULATED OTHER COMPREHENSIVE INCOME The following table sets forth details of the changes in accumulated other comprehensive income (losses) for the three months and nine months ended September 30, 2018 and 2017. In thousands Currency translation adjustments Unrealized gain (loss) on cash flow hedges Change in pensions Change in other postretirement defined benefit plans Total Balance at July 1, 2018 $ (62,315 ) $ (1,345 ) $ (115,167 ) $ 4,221 $ (174,606 ) Other comprehensive income (loss) before reclassifications (net of tax) (3,217 ) 627 12,981 4,699 15,090 Amounts reclassified from accumulated other comprehensive income (net of tax) — 989 4,053 (161 ) 4,881 Net current period other comprehensive income (loss) (3,217 ) 1,616 17,034 4,538 19,971 Balance at September 30, 2018 $ (65,532 ) $ 271 $ (98,133 ) $ 8,759 $ (154,635 ) Balance at July 1, 2017 $ (66,879 ) $ (3,097 ) $ (105,824 ) $ 4,719 $ (171,081 ) Other comprehensive income (loss) before reclassifications (net of tax) 16,559 (1,533 ) — — 15,026 Amounts reclassified from accumulated other comprehensive income (net of tax) — 19 2,424 (139 ) 2,304 Net current period other comprehensive income (loss) 16,559 (1,514 ) 2,424 (139 ) 17,330 Balance at September 30, 2017 $ (50,320 ) $ (4,611 ) $ (103,400 ) $ 4,580 $ (153,751 ) In thousands Currency translation adjustments Unrealized gain (loss) on cash flow hedges Change in pensions Change in other postretirement defined benefit plans Total Balance at January 1, 2018 $ (41,839 ) $ (4,092 ) $ (98,295 ) $ 3,551 $ (140,675 ) Amount reclassified for adoption of ASU No. 2018-02 (23,297 ) 999 (22,298 ) Balance as adjusted at January 1, 2018 (41,839 ) (4,092 ) (121,592 ) 4,550 (162,973 ) Other comprehensive income (loss) before reclassifications (net of tax) (23,693 ) 778 12,981 4,699 (5,235 ) Amounts reclassified from accumulated other comprehensive income (net of tax) — 3,585 10,478 (490 ) 13,573 Net current period other comprehensive income (loss) (23,693 ) 4,363 23,459 4,209 8,338 Balance at September 30, 2018 $ (65,532 ) $ 271 $ (98,133 ) $ 8,759 $ (154,635 ) Balance at January 1, 2017 $ (100,448 ) $ 1,500 $ (110,656 ) $ 4,998 $ (204,606 ) Other comprehensive income (loss) before reclassifications (net of tax) 50,128 (4,868 ) — 1 45,261 Amounts reclassified from accumulated other comprehensive income (net of tax) — (1,243 ) 7,256 (419 ) 5,594 Net current period other comprehensive income (loss) 50,128 (6,111 ) 7,256 (418 ) 50,855 Balance at September 30, 2017 $ (50,320 ) $ (4,611 ) $ (103,400 ) $ 4,580 $ (153,751 ) Reclassifications out of accumulated other comprehensive income and into the condensed consolidated statements of income were as follows: Three months ended September 30 Nine months ended September 30 In thousands 2018 2017 2018 2017 Description Line Item in Statements of Income Cash flow hedges (Note 13) (Gains) losses on cash flow hedges $ 1,344 $ 29 $ 4,939 $ (1,687 ) Costs of products sold Tax expense (benefit) (355 ) (10 ) (1,354 ) 444 Income tax provision Net of tax 989 19 3,585 (1,243 ) Retirement plan obligations (Note 8) Amortization of deferred benefit pension plans Prior service costs 5 7 16 17 Other, net Actuarial losses 2,060 1,777 6,179 5,332 Other, net Discontinued operations amortization of deferred benefit pension plans 2,171 2,002 6,515 5,982 Curtailment recognition 1,805 — 1,805 — Discontinued operations 6,041 3,786 14,515 11,331 Tax benefit (1,988 ) (1,362 ) (4,037 ) (4,075 ) Income tax provision Net of tax 4,053 2,424 10,478 7,256 Amortization of deferred benefit other plans Prior service costs — — — — Other, net Actuarial gains (16 ) (4 ) (49 ) (10 ) Other, net Discontinued operations amortization of deferred benefit other plans (201 ) (135 ) (604 ) (409 ) (217 ) (139 ) (653 ) (419 ) Tax expense 56 — 163 — Income tax provision Net of tax (161 ) (139 ) (490 ) (419 ) Total reclassifications, net of tax $ 4,881 $ 2,304 $ 13,573 $ 5,594

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2018
Income Tax Disclosure [Abstract]
Income Taxes	9. INCOME TAXES On December 22, 2017, the Tax Cuts and Jobs Act of 2017 (“TCJA”) was signed into U.S. law. Among other things, the TCJA reduces the U.S. federal corporate tax rate from 35% to 21% beginning in 2018 and requires companies to pay a one-time transition tax on previously unremitted earnings of non-U.S. subsidiaries that were previously tax deferred. ASC Topic 740, Accounting for Income Taxes, requires companies to recognize the effect of tax law changes in the period of enactment even though the effective date for most provisions is for tax years beginning after December 31, 2017. Given the significance of the legislation, the U.S. Securities and Exchange Commission (the "SEC") staff issued Staff Accounting Bulletin No. 118 (“SAB 118”), which allows registrants to record provisional amounts during a one year “measurement period” similar to that used when accounting for business combinations. However, the measurement period is deemed to have ended earlier when the registrant has obtained, prepared, and analyzed the information necessary to finalize its accounting. During the measurement period, impacts of the law are expected to be recorded at the time a reasonable estimate for all or a portion of the effects can be made, and provisional amounts can be recognized and adjusted as information becomes available, prepared, or analyzed. Our accounting for certain elements of the TCJA was incomplete as of December 31, 2017 and remains incomplete as of September 30, 2018. The TCJA includes a one-time mandatory repatriation transition tax on the net accumulated earnings and profits of a U.S. taxpayer’s foreign subsidiaries. We filed our 2017 U.S. federal income tax return during the third quarter and reported the mandatory repatriation transition tax on the net earnings and profits of our foreign subsidiaries. As a result, we recorded an increase of $0.4 million to the provisional amount of repatriation transition tax previously recorded. However, uncertainties remain regarding proposed regulations issued by the Internal Revenue Service in August 2018, and pending legislation and interpretive guidance from state taxing authorities that could materially impact those provisional estimates. During early 2018, the Internal Revenue Service issued additional guidance affecting the computation of our 2017 federal income tax liability. The ultimate impact of the TCJA may differ from current estimates, and such differences could be material, due to changes in interpretations or assumptions. While the TCJA provides for a territorial tax system, beginning in 2018, it includes the global intangible low-taxed income (“GILTI”) provision. We elected to account for GILTI tax in the period in which it is incurred. The GILTI provisions require entities to include in its U.S. income tax return foreign subsidiary earnings in excess of an allowable return on the foreign subsidiary’s tangible assets. For the nine months ended September 30, 2018, our effective tax rate increased by approximately 11% as a result of the GILTI provisions due to our utilization of U.S. federal tax loss carryforward, which restricts our ability to recognize the associated foreign tax credits and a deduction of up to 50% of the GILTI income. Since we are using U.S. federal tax loss carryforwards, there is no impact to cash taxes related to the GILTI provisions. Income taxes are recognized for the amount of taxes payable or refundable for the current year and deferred tax liabilities and assets for the future tax consequences of events that have been recognized in our consolidated financial statements or tax returns. The effects of income taxes are measured based on enacted tax laws and rates. In the third quarter of 2018, we recorded a valuation allowance of $5.7 million against our net deferred tax assets primarily due to uncertainty regarding the ability to utilize federal net operating losses and credit carryforwards. In assessing the need for a valuation allowance, management considers all available positive and negative evidence in its analysis. Based on this analysis, we recorded a valuation allowance for the portion of deferred tax assets where the weight of the evidence indicated it is more likely than not that the deferred tax assets will not be realized. As of September 30, 2018 and December 31, 2017, we had $28.7 million and $26.9 million, respectively, of gross unrecognized tax benefits. As of September 30, 2018, if such benefits were to be recognized, approximately $18.6 million would be recorded as a component of income tax expense, thereby affecting our effective tax rate. We, or one of our subsidiaries, file income tax returns with the United States Internal Revenue Service, as well as various state and foreign authorities. The following table summarizes, by major jurisdiction, tax years that remain subject to examination: Open Tax Years Jurisdiction Examinations not yet initiated Examination in progress United States Federal 2015 - 2017 N/A State 2013 - 2017 2014 Canada (1) 2010-2013 2014 - 2017 Germany (1) 2016 - 2017 2011 - 2015 France N/A 2012; 2015-2017 United Kingdom 2016 - 2017 N/A Philippines 2015, 2017 2016 (1) includes provincial or similar local jurisdictions, as applicable The amount of income taxes we pay is subject to ongoing audits by federal, state and foreign tax authorities, which often result in proposed assessments. Management performs a comprehensive review of its global tax positions on a quarterly basis and accrues amounts for uncertain tax positions. Based on these reviews and the result of discussions and resolutions of matters with certain tax authorities and the closure of tax years subject to tax audit, reserves are adjusted as necessary. However, future results may include favorable or unfavorable adjustments to our estimated tax liabilities in the period the assessments are determined or resolved or as such statutes are closed. Due to potential for resolution of federal, state and foreign examinations, and the lapse of various statutes of limitation, it is reasonably possible our gross unrecognized tax benefits balance may decrease within the next twelve months by a range of zero to $6.9 million. Substantially all of this range relates to tax positions taken in Germany and the U.S. We recognize interest and penalties related to uncertain tax positions as income tax expense. The following table summarizes information related to interest and penalties on uncertain tax positions: Nine months ended September 30 In millions 2018 2017 Interest expense (income) $ 0.3 $ 0.3 Penalties — — September 30 December 31 2018 2017 Accrued interest payable $ 1.1 $ 0.8

Stock-Based Compensation

Stock-Based Compensation	9 Months Ended
	Sep. 30, 2018
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Stock-Based Compensation	10. STOCK-BASED The P. H. Glatfelter Amended and Restated Long Term Incentive Plan (the “LTIP”) provides for the issuance of Glatfelter common stock to eligible participants in the form of restricted stock units, restricted stock awards, non-qualified stock options, performance shares, incentive stock options and performance units. Pursuant to terms of the LTIP, we have issued to eligible participants restricted stock units, performance share awards and stock only stock appreciation rights. Restricted Stock Units (“RSU”) and Performance Share Awards (“PSAs”) Awards of RSUs and PSAs are made under our LTIP. The RSUs vest on the passage of time, generally on a graded scale over a three, four, and five-year period, or in certain instances the RSUs were issued with five year cliff vesting. PSAs are issued to members of management and vesting is based on achievement of cumulative financial performance targets covering a two year period followed by an additional one-year service period. In addition, beginning in 2018, PSA awards include a modifier based on our three-year total shareholder return (“TSR”) relative to the TSR of the S&P SmallCap 600 Index. The performance measures include a minimum, target and maximum performance level providing the grantees an opportunity to receive more or less shares than targeted depending on actual financial performance. In addition, the number of shares earned may be further increased or decreased based on our TSR relative to the S&P SmallCap 600 Index. For RSUs, the grant date fair value of the awards, which is equal to the closing price per common share on the date of the award, is used to determine the amount of expense to be recognized over the applicable service period. For PSAs, the grant date fair value is estimated using a lattice model. The significant inputs include the stock price, volatility, dividend yield, and risk free rate of return. Settlement of RSUs and PSAs will be made in shares of our common stock currently held in treasury. The following table summarizes RSU and PSA activity during periods indicated: Units 2018 2017 Balance at January 1, 929,386 679,038 Granted 398,005 370,458 Forfeited (73,673 ) (93,045 ) Shares delivered (151,371 ) (26,352 ) Balance at September 30, 1,102,347 930,099 The amount granted in 2018 and 2017 includes 184,121 and 163,274, respectively, of PSAs exclusive of reinvested dividends. The following table sets forth aggregate RSU and PSA compensation expense included in continuing operations for the periods indicated: September 30 In thousands 2018 2017 Three months ended $ 1,146 $ 1,494 Nine months ended 4,283 3,293 Stock Only Stock Appreciation Rights (“SOSARs”) Under terms of the SOSAR, a recipient receives the right to a payment in the form of shares of common stock equal to the difference, if any, in the fair market value of one share of common stock at the time of exercising the SOSAR and the exercise price. The SOSARs vest ratably over a three year period and have a term of ten years. No SOSARs were awarded during the first nine months of 2018 or 2017. The following table sets forth information related to outstanding SOSARS for the nine months ended September 30: 2018 2017 SOSARS Shares Wtd Avg Exercise Price Shares Wtd Avg Exercise Price Outstanding at January 1, 2,561,846 $ 17.87 2,736,616 $ 17.64 Granted — — — — Exercised (158,545 ) 13.31 (33,050 ) 14.65 Canceled / forfeited (51,285 ) 22.35 (17,630 ) 18.46 Outstanding at September 30, 2,352,016 $ 18.08 2,685,936 $ 17.67 The following table sets forth SOSAR compensation expense included in continuing operations for the periods indicated: September 30 In thousands 2018 2017 Three months ended $ 67 $ 233 Nine months ended 311 1,038

Retirement Plans and Other Post

Retirement Plans and Other Post-Retirement Benefits	9 Months Ended
	Sep. 30, 2018
Compensation And Retirement Disclosure [Abstract]
Retirement Plans and Other Post-Retirement Benefits	11. RETIREMENT PLANS AND OTHER POST-RETIREMENT BENEFITS The following tables provide information with respect to the net periodic costs of our pension and post-retirement medical benefit plans included in continuing operations. Three months ended September 30 In thousands 2018 2017 Pension Benefits Service cost $ 595 $ 487 Interest cost 3,241 3,413 Expected return on plan assets (5,531 ) (5,514 ) Amortization of prior service cost 5 7 Amortization of unrecognized loss 2,060 1,777 Total net periodic benefit cost $ 370 $ 170 Other Benefits Service cost $ 16 $ 16 Interest cost 80 91 Amortization of actuarial gain (16 ) (4 ) Total net periodicbenefit cost $ 80 $ 103 Nine months ended September 30 In thousands 2018 2017 Pension Benefits Service cost $ 1,784 $ 1,462 Interest cost 9,723 10,240 Expected return on plan assets (16,592 ) (16,542 ) Amortization of prior service cost 16 17 Amortization of unrecognized loss 6,179 5,332 Total net periodic benefit cost $ 1,110 $ 509 Other Benefits Service cost $ 46 $ 49 Interest cost 239 275 Amortization of actuarial gain (49 ) (10 ) Total net periodic benefit cost $ 236 $ 314 In the first quarter of 2018, we adopted the provisions of ASU No. 2017-07 which requires entities to present the service cost component of net periodic benefit costs in operating profit along with other employee compensation costs. All other components of net periodic benefit costs are to be presented below the determination of operating income in “Other, net”.

Inventories

Inventories	9 Months Ended
	Sep. 30, 2018
Inventory Disclosure [Abstract]
Inventories	12. INVENTORIES Inventories, net of reserves, were as follows: September 30 December 31 In thousands 2018 2017 Raw materials $ 45,595 $ 39,797 In-process and finished 90,113 65,277 Supplies 35,278 31,127 Total $ 170,986 $ 136,201

Capitalized Interest

Capitalized Interest	9 Months Ended
	Sep. 30, 2018
Interest Expense [Abstract]
Capitalized Interest	13. CAPITALIZED INTEREST The following table sets forth details of interest incurred, capitalized and expensed included in continuing operations: Three months ended September 30 Nine months ended September 30 In thousands 2018 2017 2018 2017 Interest cost incurred $ 3,965 $ 3,856 $ 11,633 $ 11,219 Interest capitalized - 532 396 1,194 Interest expense $ 3,965 $ 3,324 $ 11,237 $ 10,025 Capitalized interest relates to spending for the Airlaid capacity expansion project in 2017 and 2018.

Long-Term Debt

Long-Term Debt	9 Months Ended
	Sep. 30, 2018
Debt Disclosure [Abstract]
Long-Term Debt	14. LONG-TERM DEBT Long-term debt is summarized as follows: September 30 December 31 In thousands 2018 2017 Revolving credit facility, due Mar. 2020 $ 345,962 $ 171,200 5.375% Notes, due Oct. 2020 250,000 250,000 2.40% Term Loan, due Jun. 2022 6,201 7,710 2.05% Term Loan, due Mar. 2023 27,802 33,607 1.30% Term Loan, due Jun. 2023 7,855 9,423 1.55% Term Loan, due Sep. 2025 9,928 11,390 Total long-term debt 647,748 483,330 Less current portion (10,904 ) (11,298 ) Unamortized deferred issuance costs (1,438 ) (1,934 ) Long-term debt, net of current portion $ 635,406 $ 470,098 On March 12, 2015, we amended our revolving credit agreement with a consortium of banks (the “Revolving Credit Facility”) which increased the amount available for borrowing to $400 million, extended the maturity of the facility to March 12, 2020, and instituted a revised interest rate pricing grid. On February 1, 2017 and September 7, 2018, the Revolving Credit Facility was further amended to, among other, (a) increase the maximum leverage ratio financial covenant to 4.0x and (b) change the definition of earnings before interest, taxes, depreciation and amortization (“EBITDA”) for purposes of calculating covenant compliance. For all US dollar denominated borrowings under the Revolving Credit Facility, the borrowing rate is, at our option, either, (a) the bank’s base rate which is equal to the greater of i) the prime rate; ii) the federal funds rate plus 50 basis points; or iii) the daily Euro-rate plus 100 basis points plus an applicable spread over either i), ii) or iii) ranging from 12.5 basis points to 100 basis points based on the Company’s leverage ratio and its corporate credit ratings determined by Standard & Poor’s Rating Services and Moody’s Investor Service, Inc. (the “Corporate Credit Rating”); or (b) the daily Euro-rate plus an applicable margin ranging from 112.5 basis points to 200 basis points based on the Company’s leverage ratio and the Corporate Credit Rating. For non-US dollar denominated borrowings, interest is based on (b) above. The Revolving Credit Facility contains a number of customary covenants for financings of this type that, among other things, restrict our ability to dispose of or create liens on assets, incur additional indebtedness, repay other indebtedness, limits certain intercompany financing arrangements, make acquisitions and engage in mergers or consolidations. We are also required to comply with specified financial tests and ratios including: i) maximum net debt to EBITDA ratio (the “leverage ratio”); and ii) a consolidated EBITDA to interest expense ratio. The most restrictive of our covenants is a maximum leverage ratio of 4.0x. As of September 30, 2018, the leverage ratio, as calculated in accordance with the definition in our amended credit agreement, was 2.9x. A breach of these requirements would give rise to certain remedies under the Revolving Credit Facility, among which are the termination of the agreement and accelerated repayment of the outstanding borrowings plus accrued and unpaid interest under the credit facility. On October 3, 2012, we completed a private placement offering of $250.0 million aggregate principal amount of 5.375% Senior Notes due 2020 (the “5.375% Notes”). The 5.375% Notes, which are publically registered, are fully and unconditionally guaranteed, jointly and severally, by PHG Tea Leaves, Inc., Mollanvick, Inc., Glatfelter Composite Fibers N. A., Inc., Glatfelter Advanced Materials N.A., LLC., and Glatfelter Holdings, LLC (the “Guarantors”). Interest on the 5.375% Notes is payable semiannually in arrears on April 15 and October 15. The 5.375% Notes are redeemable, in whole or in part, at any time on or after October 15, 2016 at the redemption prices specified in the applicable Indenture. These Notes and the guarantees of the notes are senior obligations of the Company and the Guarantors, respectively, rank equally in right of payment with future senior indebtedness of the Company and the Guarantors and will mature on October 15, 2020. The 5.375% Notes contain various covenants customary to indebtedness of this nature including limitations on i) the amount of indebtedness that may be incurred; ii) certain restricted payments including common stock dividends; iii) distributions from certain subsidiaries; iv) sales of assets; v) transactions amongst subsidiaries; and vi) incurrence of liens on assets. In addition, the 5.375% Notes contain cross default provisions that could result in all such notes becoming due and payable in the event of a failure to repay debt outstanding under the Revolving Credit Facility at maturity or a default under the Revolving Credit Facility that accelerates the debt outstanding thereunder. As of September 30, 2018, we met all of the requirements of our debt covenants. Glatfelter Gernsbach GmbH & Co. KG (“Gernsbach”), a wholly-owned subsidiary of ours, entered into a series of borrowing agreements with IKB Deutsche Industriebank AG, Düsseldorf (“IKB”) as summarized below: Amounts in thousands Original Principal Interest Rate Maturity Borrowing date Apr. 11, 2013 € 42,700 2.05 % Mar. 2023 Sep. 4, 2014 10,000 2.40 % Jun. 2022 Oct. 10, 2015 2,608 1.55 % Sep. 2025 Apr. 26, 2016 10,000 1.30 % Jun. 2023 May 4, 2016 7,195 1.55 % Sep. 2025 Each of the borrowings require quarterly repayments of principal and interest and provide for representations, warranties and covenants customary for financings of these types. The financial covenants contained in each of the IKB loans, which relate to the minimum ratio of consolidated EBITDA to consolidated interest expense and the maximum ratio of consolidated total net debt to consolidated adjusted EBITDA, are calculated by reference to our Revolving Credit Facility. P. H. Glatfelter Company guarantees all debt obligations of its subsidiaries. All such obligations are recorded in these condensed consolidated financial statements. Letters of credit issued to us by certain financial institutions totaled $5.2 million as of September 30, 2018 and December 31, 2017. The letters of credit, which reduce amounts available under our revolving credit facility, primarily provide financial assurances for the benefit of certain state workers compensation insurance agencies in conjunction with our self-insurance program. We bear the credit risk on this amount to the extent that we do not comply with the provisions of certain agreements. No amounts are outstanding under the letters of credit.

Fair Value of Financial Instrum

Fair Value of Financial Instruments	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	15. FAIR VALUE OF FINANCIAL INSTRUMENTS The amounts reported on the condensed consolidated balance sheets for cash and cash equivalents, accounts receivable and accounts payable approximate fair value. The following table sets forth carrying value and fair value of long-term debt: September 30, 2018 December 31, 2017 In thousands Carrying Value Fair Value Carrying Value Fair Value Variable rate debt $ 345,962 $ 345,962 $ 171,200 $ 171,200 Fixed-rate bonds 250,000 250,633 250,000 253,823 2.40% Term loan 6,201 6,332 7,710 7,889 2.05% Term loan 27,802 28,206 33,607 34,122 1.30% Term Loan 7,855 7,825 9,423 9,370 1.55% Term loan 9,928 9,874 11,390 11,320 Total $ 647,748 $ 648,832 $ 483,330 $ 487,724 As of September 30, 2018, and December 31, 2017, we had $250.0 million of 5.375% fixed rate bonds. These bonds are publicly registered, but thinly traded. The values set forth above are based on observable inputs and other relevant market data (Level 2). The fair value of financial derivatives is set forth below in Note 16.

Financial Derivatives and Hedgi

Financial Derivatives and Hedging Activities	9 Months Ended
	Sep. 30, 2018
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Financial Derivatives and Hedging Activities	16. FINANCIAL DERIVATIVES AND HEDGING ACTIVITIES As part of our overall risk management practices, we enter into financial derivatives primarily designed to either i) hedge foreign currency risks associated with forecasted transactions (“cash flow hedges”); or ii) mitigate the impact that changes in currency exchange rates have on intercompany financing transactions and foreign currency denominated receivables and payables (“foreign currency hedges”). Derivatives Designated as Hedging Instruments - Cash Flow Hedges We use currency forward contracts as cash flow hedges to manage our exposure to fluctuations in the currency exchange rates on certain forecasted production costs or capital expenditures expected to be incurred. Currency forward contracts involve fixing the exchange for delivery of a specified amount of foreign currency on a specified date. As of September 30, 2018, the maturity of currency forward contracts ranged from one month to 18 months. We designate certain currency forward contracts as cash flow hedges of forecasted raw material purchases, certain production costs or capital expenditures with exposure to changes in foreign currency exchange rates. The effective portion of changes in the fair value of derivatives designated and that qualify as cash flow hedges of foreign exchange risk is deferred as a component of accumulated other comprehensive income in the accompanying condensed consolidated balance sheets. With respect to hedges of forecasted raw material purchases or production costs, the amount deferred is subsequently reclassified into costs of products sold in the period that inventory produced using the hedged transaction affects earnings. For hedged capital expenditures, deferred gains or losses are reclassified and included in the historical cost of the capital asset and subsequently affect earnings as depreciation is recognized. The ineffective portion of the change in fair value of the derivative is recognized directly to earnings and reflected in the accompanying condensed consolidated statements of income as non-operating income (expense) under the caption “Other, net.” We had the following outstanding derivatives that were used to hedge foreign exchange risks associated with forecasted transactions and designated as hedging instruments: In thousands September 30 2018 December 31 2017 Derivative Sell/Buy - sell notional Philippine Peso / British Pound — 19,047 Euro / British Pound 16,130 13,586 Euro / U.S. Dollar — 1,048 U.S. Dollar / Euro 414 946 Canadian Dollar / U.S. Dollar 168 — Sell/Buy - buy notional Euro / Philippine Peso 1,147,101 890,096 British Pound / Philippine Peso 1,026,551 797,496 U.S. Dollar / Euro — 4,253 Euro / U.S. Dollar 74,569 60,519 U.S. Dollar / Canadian Dollar 31,394 32,265 British Pound / Euro — 335 Derivatives Not Designated as Hedging Instruments - Foreign Currency Hedges We also entered into forward foreign exchange contracts to mitigate the impact changes in currency exchange rates have on balance sheet monetary assets and liabilities. None of these contracts are designated as hedges for financial accounting purposes and, accordingly, changes in value of the foreign exchange forward contracts and in the offsetting underlying on-balance-sheet transactions are reflected in the accompanying condensed consolidated statements of income under the caption “Other, net.” The following sets forth derivatives used to mitigate the impact changes in currency exchange rates have on balance sheet monetary assets and liabilities: In thousands September 30 2018 December 31 2017 Derivative Sell/Buy - sell notional U.S. Dollar / British Pound 22,500 17,500 British Pound / Euro 1,000 1,000 Canadian / U.S. dollar 2,500 - Sell/Buy - buy notional Euro / U.S. Dollar 11,000 4,500 British Pound / Euro 10,000 13,000 These contracts have maturities of one month from the date originally entered into. Fair Value Measurements The following table summarizes the fair values of derivative instruments for the period indicated and the line items in the accompanying condensed consolidated balance sheets where the instruments are recorded: In thousands September 30 2018 December 31 2017 September 30 2018 December 31 2017 Prepaid Expenses and Other Other Balance sheet caption Current Assets Current Liabilities Designated as hedging: Forward foreign currency exchange contracts $ 1,489 $ 1,066 $ 522 $ 4,787 Not designated as hedging: Forward foreign currency exchange contracts $ 203 $ 151 $ 309 $ 43 The amounts set forth in the table above represent the net asset or liability giving effect to rights of offset with each counterparty. The effect of netting the amounts presented above did not have a material effect on our consolidated financial position. The following table summarizes the amount of income or (loss) from derivative instruments recognized in our results of operations for the periods indicated and the line items in the accompanying condensed consolidated statements of income where the results are recorded: Three months ended September 30 Nine months ended September 30 In thousands 2018 2017 2018 2017 Designated as hedging: Forward foreign currency exchange contracts: Effective portion – cost of products sold $ (1,344 ) $ (29 ) $ (4,939 ) $ 1,687 Ineffective portion – other – net 207 40 (5 ) 126 Not designated as hedging: Forward foreign currency exchange contracts: Other – net $ (477 ) $ 328 $ (1,078 ) $ 719 The impact of activity not designated as hedging was substantially all offset by the remeasurement of the underlying on-balance-sheet item. The fair value hierarchy consists of three broad levels, which gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1) and the lowest priority to unobservable inputs (Level 3). The fair values of the foreign exchange forward contracts are considered to be Level 2. Foreign currency forward contracts are valued using foreign currency forward and interest rate curves. The fair value of each contract is determined by comparing the contract rate to the forward rate and discounting to present value. Contracts in a gain position are recorded in the condensed consolidated balance sheets under the caption “Prepaid expenses and other current assets” and the value of contracts in a loss position is recorded under the caption “Other current liabilities.” A rollforward of fair value amounts recorded as a component of accumulated other comprehensive income (loss) is as follows: In thousands 2018 2017 Balance at January 1, $ (5,640 ) $ 1,882 Deferred (losses) gains on cash flow hedges 1,142 (6,455 ) Reclassified to earnings 4,939 (1,687 ) Balance at September 30, $ 441 $ (6,260 ) We expect substantially all of the amounts recorded as a component of accumulated other comprehensive income will be recorded as a component of the capital asset or realized in results of operations within the next 12 to 18 months and the amount ultimately recognized will vary depending on actual market rates. Credit risk related to derivative activity arises in the event the counterparty fails to meet its obligations to us. This exposure is generally limited to the amounts, if any, by which the counterparty’s obligations exceed our obligation to them. Our policy is to enter into contracts only with financial institutions which meet certain minimum credit ratings.

Commitments, Contingencies and

Commitments, Contingencies and Legal Proceedings	9 Months Ended
	Sep. 30, 2018
Commitments And Contingencies Disclosure [Abstract]
Commitments, Contingencies and Legal Proceedings	17. COMMITMENTS, CONTINGENCIES AND LEGAL PROCEEDINGS Fox River - Neenah, Wisconsin Background. We have significant uncertainties associated with environmental claims arising out of the presence of polychlorinated biphenyls (“PCBs”) in sediments in the lower Fox River, on which our former Neenah facility was located, and in the Bay of Green Bay Wisconsin (collectively, the “Site”). Since the early 1990s, the United States, the State of Wisconsin and two Indian tribes (collectively, the “Governments”) have pursued a cleanup of a 39-mile stretch of river from Little Lake Butte des Morts into Green Bay and natural resource damages (“NRDs”). The Site has been subject to certain studies, demonstration projects and interim cleanups. The permanent cleanup, known as a “remedial action” under the Comprehensive Environmental Response, Compensation and Liability Act (“CERCLA”), consists of sediment dredging, installation of engineered caps and placement of sand covers in various areas in the bed of the river. The United States originally notified several entities that they were potentially responsible parties (“PRPs”); however, after giving effect to settlements reached with the Governments, the remaining PRPs exposed to continuing obligations to implement the remainder of the cleanup consist of us, Georgia Pacific Consumer Products, L.P. (“Georgia Pacific”) and NCR Corporation (“NCR”). The United States Environmental Protection Agency (“EPA”) has divided the Site into five “operable units”, including the most upstream portion of the Site on which our facility was located (“OU1”) and four downstream reaches of the river and bay (“OU2-5”). We and WTM I Company (“WTM I”), one of the PRPs, implemented the remedial action in OU1 under a consent decree with the Governments; Menasha Corporation made a financial contribution to that work. That project began in 2004 and the work is complete, other than on-going monitoring and maintenance. For OU2-5, work has proceeded primarily under a Unilateral Administrative Order (“UAO”) issued in November 2007 by the EPA to us and seven other respondents. The majority of that work to date has been funded or conducted by parties other than us. Prior to the UAO, we contributed to a project in that area. Since the issuance of the UAO we have conducted about $13.4 million of cleanup work under the UAO in 2015 and 2016. The cleanup is expected to continue through 2019. However, as discussed below, under a consent decree between the United States, Wisconsin, NCR and Appvion, we are not responsible for any additional cleanup at the Site. Litigation and Settlement . In 2008, in an allocation action, NCR and Appvion sued us and many other defendants in an effort to allocate among the liable parties the costs of cleaning up this Site and compensating the Governments for their costs and the natural resource trustees for NRDs. This case has been called the “Whiting litigation.” After several summary judgment rulings and a trial, the trial court entered judgment in the Whiting Litigation allocating to NCR 100% of the costs of (a) the OU2-5 cleanup, (b) NRDs, (c) past and future costs incurred by the Governments in OU2-5, and (d) past and future costs incurred by any of the other parties net of an appropriate equitable adjustment for insurance recoveries. On appeal, the United States Court of Appeals for the Seventh Circuit affirmed the district court’s ruling, holding that if knowledge and fault were the only equitable factors governing allocation of costs and NRDs at the Site, NCR would owe 100% of all costs and damages in OU2-5, but would not have a share of costs in OU1 -- which is upstream of the outfall of the facilities for which NCR is responsible -- solely as an “arranger for disposal” of PCB-containing waste paper by recycling it at our mill. However, the court of appeals vacated the judgment and remanded the case for the district court’s further consideration of whether any other equitable factors might cause the district court to alter its allocation to something less than 100% to NCR. In 2010, in an enforcement action, the Governments sued us and other defendants for (a) an injunction to require implementation of the cleanup ordered by the 2007 UAO, (b) recovery of the Governments’ past and future costs of response, (c) recovery of NRDs, and (d) recovery of a declaration of liability for the Site. After appeals, the Governments did not obtain an injunction and they withdrew their claims for NRDs. The Governments obtained a declaration of our liability to comply with the 2007 UAO. The Governments’ costs claims remained pending. On January 17, 2017, the United States filed a consent decree with the federal district court among the United States, Wisconsin, NCR, and Appvion (the “NCR/Appvion consent decree”) under which NCR would agree to complete the remaining cleanup and both NCR and Appvion would agree not to seek to recover from us or anyone else any amounts they have spent or will spend, and we and others would be barred from seeking claims against NCR or Appvion. On March 29, 2017, the United States moved for entry of a somewhat revised version of the NCR/Appvion consent decree, which the federal district court entered on August 23, 2017. Under the consent decree, if it were to withstand appeal, we would only face exposure to: (i) government past oversight costs, (ii) government future oversight costs, (iii) long term monitoring and maintenance, and (iv) depending on the reason, a further remedy if necessary in the event the currently ordered remedy fails, over 30 or more years, to achieve its objectives. As the result of earlier settlements, Georgia Pacific is only jointly liable with us to the Governments for monitoring and maintenance costs incurred in the most downstream three miles of the river (“OU4b”) and the bay of Green Bay (“OU5”). In addition, we and Georgia Pacific had claims against each other to reallocate the costs that we have each incurred or will incur. We have settled those claims. Under this settlement, Georgia Pacific has agreed to implement the monitoring and maintenance in OU4b and OU5 and we would be responsible for monitoring and maintenance of all other upstream Operable Units. We paid Georgia Pacific $9.5 million in August 2017. The NCR/Appvion consent decree and our settlement with Georgia Pacific resulted in all claims among the responsible parties being barred, waived, or withdrawn. Accordingly, on October 10, 2017, the federal district court approved a stipulation dismissing all remaining claims in the Whiting litigation. Therefore, unless certain limited circumstances occur permitting reassertion of claims, we are not subject to claims for reallocation of costs or damages incurred by any of the other parties and we cannot seek contribution or reallocation from them. On October 20, 2017, we appealed the district court’s approval of the NCR/Appvion consent decree. We contend that the court did not do what was required to properly conclude that the NCR/Appvion consent decree was substantially fair to us. We contend that the consent decree was unfair to us because the costs we have already incurred and the costs that we would have to incur were the NCR/Appvion consent decree to remain in effect would exceed our fair share of costs for this site. If we prevail on appeal, the circumstances that caused us to prevail would lead us to anticipate that, while all costs would again be subject to reallocation, that reallocation would be in our favor. Cost estimates. The proposed NCR/Appvion consent decree, as revised, states that all parties combined have spent more than $1 billion through March 2017 towards remedial actions and NRDs, of which we have contributed approximately $75 million. In addition, work to complete the remaining site remedy under the UAO was anticipated to cost approximately $200 million at the beginning of the 2017 remediation season. We believe NCR to have completed a full season of work in 2017 and to working during the 2018 season. So long as the NCR/Appvion consent decree remains in effect, we are not exposed to reallocation of any of those amounts, and no other party will be exposed to reallocation of any of the amounts that we have incurred or may incur in the future. So long as the NCR/Appvion consent decree remains in effect, we (and not NCR) would remain responsible for the Governments’ unreimbursed past costs. Many parties have entered into settlements with the Governments over time, including us, that have called for payments of cash or in-kind provision of natural resource restoration projects. Certain amounts were allocated to the United States and the State to reimburse their costs, and other amounts were allocated to the Natural Resource Damages Assessment and Restoration (“NRDAR”) Fund to pay for natural resource damages assessment, if any, and restoration projects. The Governments may not recover costs from us that anyone has reimbursed previously. As of September 2018, the United States claims to have incurred about $38.5 million in unreimbursed recoverable costs including prejudgment interest, an amount that we dispute. As of June 30, 2018, the State had no unreimbursed recoverable costs, and now claims to have had on hand approximately $0.5 million of unspent settlement money, a claim that we also dispute. Further, the NRDAR Fund had received what the Governments claim to have been approximately $105 million in settlement payments, of which more than $60 million remained unspent as of 2015. On February 5, 2018, the district court decided that the Governments’ recovery of costs would be reduced by the funds held by the State at the end of 2015 and by any amount by which the Governments had applied settlement payments to natural resource damages in excess of the actual amount of natural resource damages. The Governments moved for reconsideration. On July 13, 2018, the district court denied that motion, holding that the United States’ right to recover should be reduced by (a) the amount by which the $105 million of settlement payments accounted as a recovery of NRDs exceeded the actual NRDs and (b) the amounts held as a balance by the State that the State has not subsequently spent. Both of those would be the subject of a trial. The Governments have requested permission to appeal that determination, a motion that we oppose and the district court has not yet decided. We contend that the natural resource restoration projects already constructed fully compensate the public for any natural resource damages, and therefore that the entire unspent balance as of June 2015 in the NRDAR Fund remains as an offset, an amount likely to exceed all of the Governments’ past and future costs of response. No date has yet been set for trial of the issue. If at trial the actual amount of NRDs were determined to be more than the Governments have collected in settlements, we might be exposed to that shortfall. So long as the NCR/Appvion consent decree remains in effect, we would also remain subject to our remaining obligations under the OU1 consent decree, which now consist of long term monitoring and maintenance that we expect earlier contributions to the OU1 escrow account to fund these costs. Furthermore, we, along with Georgia Pacific, but not NCR, would be responsible for long term monitoring and maintenance required pursuant to the Lower Fox River 100% Remedial Design Report dated December 2009 – Long Term Monitoring Plan (the “Plan”). The Plan requires long term monitoring of each of OU2 through OU5 over a period of at least 30 years. The monitoring activities consist of, among others, testing fish tissue, sampling water quality and sediment, and inspections of the engineered caps. Each operable unit is required to be monitored; however, because of our settlement with Georgia Pacific, our obligations are in OU1-OU4a. In the first quarter of 2018, we entered into a fixed-price, 30-year agreement with a third party for the performance of all of our monitoring and maintenance obligations in OU1 through OU4a with limited exceptions, such as, for extraordinary amounts of cap maintenance or replacement. Our obligation under this agreement is included in our total reserve for the Site. The portion of this agreement that pertains to OU1 will be paid out of the previously funded OU1 escrow account. We and WTM I executed documents for the withdrawal of WTM I from the entity we jointly formed for the performance of the OU1 work and for the release of all claims between us related to the Site, which were approved by the court overseeing WTM I’s bankruptcy in May 2018. As a result of this action, we assumed WTM I’s portion of the OU1 escrow account totaling approximately $4.7 million, which is included under the caption “Other assets” on the condensed consolidated balance sheet at June 30, 2018 and have increased our reserve for Fox River by an equal amount for potential liabilities associated with the river that we believe may ultimately be satisfied with funds from the escrow account. Reserves for the Site. Our reserve for all remaining claims against us relating to PCB contamination is set forth below: Nine months ended September 30 In thousands 2018 2017 Balance at January 1, $ 43,144 $ 52,788 Payments (3,014 ) (9,581 ) Assumption of WTM I escrow 4,746 - Accretion 115 - Balance at September 30, $ 44,991 $ 43,207 The payments set forth above primarily represent cash paid under the recently-entered long-term monitoring and maintenance agreement. Of our total reserve for the Fox River, $26.0 million is recorded in the accompanying September 30, 2018 condensed consolidated balance sheet under the caption “Environmental liabilities” and the remaining $19.0 million is recorded under the caption “Other long term liabilities.” Range of Reasonably Possible Outcomes . Based on our analysis of all available information, including but not limited to decisions of the courts, official documents such as records of decision, discussions with legal counsel, cost estimates for future monitoring and maintenance and other post-remediation costs to be performed at the Site, we believe it is reasonably possible that our costs associated with the Fox River matter could exceed the aggregate amounts accrued by amounts ranging from insignificant to approximately $30 million. We believe the likelihood of an outcome in the upper end of the monetary range is less than other possible outcomes within the range and the possibility of an outcome in excess of the upper end of the monetary range is remote. Summary . Our current assessment is we will be able to manage this environmental matter without a long-term, material adverse impact on the Company. This matter could, however, at any particular time or for any particular year or years, have a material adverse effect on our consolidated financial position, liquidity and/or results of operations or could result in a default under our debt covenants. Moreover, there can be no assurance our reserves will be adequate to provide for future obligations related to this matter, or our share of costs and/or damages will not exceed our available resources, or those obligations will not have a material adverse effect on our consolidated financial position, liquidity or results of operations and might result in a default under our loan covenants.

Segment Information

Segment Information	9 Months Ended
	Sep. 30, 2018
Segment Reporting [Abstract]
Segment Information	18. SEGMENT INFORMATION The following tables set forth financial and other information by business unit for the period indicated: Three months ended September 30 Advanced Airlaid Other and Dollars in millions Composite Fibers Materials Unallocated Total 2018 2017 2018 2017 2018 2017 2018 2017 Net sales $ 139.2 $ 142.3 $ 70.7 $ 67.8 $ — $ — $ 209.9 $ 210.1 Cost of products sold 116.8 115.0 62.3 57.2 0.9 0.5 180.0 172.7 Gross profit (loss) 22.4 27.3 8.4 10.6 (0.9 ) (0.5 ) 29.9 37.4 SG&A 10.5 10.9 2.9 2.4 12.4 13.8 25.8 27.1 (Gains) losses on dispositions of plant, equipment and timberlands, net — — — — (0.2 ) (0.1 ) (0.2 ) (0.1 ) Total operating income (loss) 11.9 16.4 5.5 8.2 (13.1 ) (14.2 ) 4.3 10.4 Non-operating expense — — — — (1.6 ) (3.7 ) (1.6 ) (3.7 ) Income (loss) before income taxes $ 11.9 $ 16.4 $ 5.5 $ 8.2 $ (14.7 ) $ (17.9 ) $ 2.8 $ 6.7 Supplementary Data Net tons sold (thousands) 37.4 39.7 24.0 23.8 — — 61.5 63.5 Depreciation, depletion and amortization $ 7.1 $ 7.1 $ 3.4 $ 2.5 $ 1.0 $ 0.6 $ 11.5 $ 10.2 Capital expenditures 3.0 3.8 1.9 12.6 1.3 4.6 6.2 21.0 Nine months ended September 30 Advanced Airlaid Other and Dollars in millions Composite Fibers Materials Unallocated Total 2018 2017 2018 2017 2018 2017 2018 2017 Net sales $ 423.7 $ 400.6 $ 213.1 $ 190.4 $ — $ — $ 636.8 $ 591.0 Cost of products sold 349.5 322.2 184.7 160.7 2.9 2.9 537.1 485.8 Gross profit (loss) 74.2 78.4 28.4 29.7 (2.9 ) (2.9 ) 99.7 105.3 SG&A 34.0 32.9 8.1 6.9 39.8 41.7 81.9 81.5 (Gains) losses on dispositions of plant, equipment and timberlands, net — — — — (1.9 ) (0.2 ) (1.9 ) (0.2 ) Total operating income (loss) 40.2 45.5 20.3 22.8 (40.8 ) (44.4 ) 19.8 23.9 Non-operating expense — — — — (9.9 ) (10.4 ) (9.9 ) (10.4 ) Income (loss) before income taxes $ 40.2 $ 45.5 $ 20.3 $ 22.8 $ (50.7 ) $ (54.8 ) $ 9.9 $ 13.5 Supplementary Data Net tons sold (thousands) 110.4 112.9 72.4 69.5 — — 182.8 182.4 Depreciation, depletion and amortization $ 21.7 $ 20.9 $ 9.7 $ 7.1 $ 3.3 $ 2.3 $ 34.7 $ 30.3 Capital expenditures 10.9 10.6 17.6 36.1 3.7 11.3 32.2 58.0 The sum of individual amounts set forth above may not agree to the condensed consolidated financial statements included herein due to rounding. Business Units Results of individual business units are presented based on our management accounting practices and management structure. There is no comprehensive, authoritative body of guidance for management accounting equivalent to accounting principles generally accepted in the United States of America; therefore, the financial results of individual business units are not necessarily comparable with similar information for any other company. The management accounting process uses assumptions and allocations to measure performance of the business units. Methodologies are refined from time to time as management accounting practices are enhanced and businesses change. The costs incurred by support areas not directly aligned with the business unit are allocated primarily based on an estimated utilization of support area services or are included in “Other and Unallocated” in the table set forth above. Management evaluates results of operations of the business units before certain corporate level costs and the effects of certain gains or losses not considered to be related to the core business operations. Management believes that this is a more meaningful representation of the operating performance of its core businesses, the profitability of business units and the extent of cash flow generated from these core operations. Such amounts are presented under the caption “Other and Unallocated.” In the evaluation of business unit results, management does not use any measures of total assets. This presentation is aligned with the management and operating structure of our company. It is also on this basis that the Company’s performance is evaluated internally and by the Company’s Board of Directors. Specialty Papers’ results of operations are reported as discontinued operations. In addition, corporate shared services costs previously included in Specialty Papers’ results are required to be included in income from continuing operations and are reported as “other and unallocated”.

Condensed Consolidating Financi

Condensed Consolidating Financial Statements	9 Months Ended
	Sep. 30, 2018
Condensed Financial Information Of Parent Company Only Disclosure [Abstract]
Condensed Consolidating Financial Statements	19. CONDENSED CONSOLIDATING FINANCIAL STATEMENTS Our 5.375% Notes issued by P. H. Glatfelter Company (the “Parent”) are fully and unconditionally guaranteed, on a joint and several basis, by certain of our 100%-owned domestic subsidiaries, PHG Tea Leaves, Inc., Mollanvick, Inc., Glatfelter Composite Fibers N. A., Inc., Glatfelter Advance Materials N.A., Inc., and Glatfelter Holdings, LLC. The guarantees are subject to certain customary release provisions including i) the designation of such subsidiary as an unrestricted or excluded subsidiary; (ii) in connection with any sale or disposition of the capital stock of the subsidiary guarantor; or (iii) upon our exercise of our legal defeasance option or our covenant defeasance option, all of which are more fully described in the Indenture dated as of October 3, 2012 and the First Supplemental Indenture dated as of October 27, 2015, among us, the Guarantors and US Bank National Association, as Trustee, relating to the 5.375% Notes. The following presents our condensed consolidating statements of income, including comprehensive income, for the three months and nine months ended September 30, 2018 and 2017, our condensed consolidating balance sheets as of September 30, 2018 and December 31, 2017, and our condensed consolidating cash flows for the nine months ended September 30, 2018 and 2017. Condensed Consolidating Statement of Income for the three months ended September 30, 2018 In thousands Parent Company Guarantors Non Guarantors Adjustments/ Eliminations Consolidated Net sales $ - $ 35,285 $ 203,910 $ (29,340 ) $ 209,855 Costs of products sold 945 32,727 175,651 (29,340 ) 179,983 Gross profit (loss) (945 ) 2,558 28,259 — 29,872 Selling, general and administrative expenses 10,557 43 15,199 — 25,799 Gain on dispositions of plant equipment and timberlands, net — (249 ) — — (249 ) Operating income (loss) (11,502 ) 2,764 13,060 — 4,322 Other non-operating income (expense) Interest expense (4,439 ) (629 ) (446 ) 1,549 (3,965 ) Interest income 134 1,528 34 (1,549 ) 147 Equity in earnings of subsidiaries 13,217 10,783 — (24,000 ) — Other, net 341 1,077 835 — 2,253 Total other non-operating income (expense) 9,253 12,759 423 (24,000 ) (1,565 ) Income (loss) from continuing operations before income taxes (2,249 ) 15,523 13,483 (24,000 ) 2,757 Income tax provision (benefit) (1,544 ) 2,349 2,657 — 3,462 Income (loss) from continuing operations (705 ) 13,174 10,826 (24,000 ) (705 ) Discontinued operations: Income (loss) from discontinued operations before income taxes (114,656 ) — — — (114,656 ) Income tax provision (benefit) (19,530 ) — — — (19,530 ) Income (loss) from discontinued operations (95,126 ) — — — (95,126 ) Net income (loss) (95,831 ) 13,174 10,826 (24,000 ) (95,831 ) Other comprehensive income (loss) 19,971 (1,767 ) (3,187 ) 4,954 19,971 Comprehensive income (loss) $ (75,860 ) $ 11,407 $ 7,639 $ (19,046 ) $ (75,860 ) Condensed Consolidating Statement of Income for the nine months ended September 30, 2018 In thousands Parent Company Guarantors Non Guarantors Adjustments/ Eliminations Consolidated Net sales $ - $ 87,617 $ 628,624 $ (79,435 ) $ 636,806 Costs of products sold 4,254 82,089 530,165 (79,435 ) 537,073 Gross profit (loss) (4,254 ) 5,528 98,459 — 99,733 Selling, general and administrative expenses 35,457 1,716 44,742 — 81,915 (Gain) loss on dispositions of plant equipment and timberlands, net (17 ) (1,929 ) 7 — (1,939 ) Operating income (loss) (39,694 ) 5,741 53,710 — 19,757 Other non-operating income (expense) Interest expense (12,773 ) (1,670 ) (1,320 ) 4,526 (11,237 ) Interest income 413 4,219 121 (4,526 ) 227 Equity in earnings of subsidiaries 49,421 45,745 — (95,166 ) Other, net (1,634 ) (1,657 ) 4,422 — 1,131 Total other non-operating income (expense) 35,427 46,637 3,223 (95,166 ) (9,879 ) Income (loss) before income taxes (4,267 ) 52,378 56,933 (95,166 ) 9,878 Income tax provision (benefit) (7,108 ) 3,022 11,123 — 7,037 Income (loss) from continuing operations 2,841 49,356 45,810 (95,166 ) 2,841 Discontinued operations: Income (loss) from discontinued operations before income taxes (128,714 ) — — — (128,714 ) Income tax provision (benefit) (28,361 ) — — — (28,361 ) Income (loss) from discontinued operations (100,353 ) — — — (100,353 ) Net income (loss) (97,512 ) 49,356 45,810 (95,166 ) (97,512 ) Other comprehensive income (loss) 8,338 (19,318 ) (19,301 ) 38,619 8,338 Comprehensive income (loss) $ (89,174 ) $ 30,038 $ 26,509 $ (56,547 ) $ (89,174 ) Condensed Consolidating Statement of Income for the three months ended September 30, 2017 In thousands Parent Company Guarantors Non Guarantors Adjustments/ Eliminations Consolidated Net sales $ - $ 20,588 $ 211,331 $ (21,799 ) $ 210,120 Costs of products sold 1,596 19,525 173,423 (21,799 ) 172,745 Gross profit (1,596 ) 1,063 37,908 — 37,375 Selling, general and administrative Expenses 12,414 536 14,133 — 27,083 (Gain) loss on dispositions of plant equipment and timberlands, net 1 (114 ) 20 — (93 ) Operating income (loss) (14,011 ) 641 23,755 — 10,385 Other non-operating income (expense) Interest expense (4,018 ) (300 ) (436 ) 1,430 (3,324 ) Interest income 160 1,316 5 (1,430 ) 51 Equity in earnings of subsidiaries 17,880 18,096 — (35,976 ) — Other, net 589 (1,920 ) 944 — (387 ) Total other non-operating income (expense) 14,611 17,192 513 (35,976 ) (3,660 ) Income (loss) from continuing operations before income taxes 600 17,833 24,268 (35,976 ) 6,725 Income tax provision (benefit) (4,445 ) (47 ) 6,172 — 1,680 Income (loss) from continuing operations 5,045 17,880 18,096 (35,976 ) 5,045 Discontinued operations: Income from discontinued operations before income taxes 9,661 — — — 9,661 Income tax provision 2,601 — — — 2,601 Income from discontinued operations 7,060 — — — 7,060 Net income 12,105 17,880 18,096 (35,976 ) 12,105 Other comprehensive income 17,330 14,812 14,959 (29,771 ) 17,330 Comprehensive income $ 29,435 $ 32,692 $ 33,055 $ (65,747 ) $ 29,435 Condensed Consolidating Statement of Income for the nine months ended September 30, 2017 In thousands Parent Company Guarantors Non Guarantors Adjustments/ Eliminations Consolidated Net sales $ - $ 63,173 $ 591,926 $ (64,064 ) $ 591,035 Costs of products sold 1,223 60,158 488,466 (64,064 ) 485,783 Gross profit (1,223 ) 3,015 103,460 — 105,252 Selling, general and administrative Expenses 37,022 846 43,662 — 81,530 (Gain) loss on dispositions of plant equipment and timberlands, net — (188 ) 20 — (168 ) Operating income (loss) (38,245 ) 2,357 59,778 — 23,890 Other non-operating income (expense) Interest expense (12,078 ) (619 ) (1,377 ) 4,049 (10,025 ) Interest income 451 3,714 93 (4,049 ) 209 Equity in earnings of subsidiaries 50,298 51,197 — (101,495 ) — Other, net 1,873 (6,445 ) 4,014 — (558 ) Total other non-operating income (expense) 40,544 47,847 2,730 (101,495 ) (10,374 ) Income before income taxes 2,299 50,204 62,508 (101,495 ) 13,516 Income tax provision (benefit) (6,788 ) (94 ) 11,311 — 4,429 Income (loss) from continuing operations 9,087 50,298 51,197 (101,495 ) 9,087 Discontinued operations: Income from discontinued operations before income taxes 14,422 — — — 14,422 Income tax provision 5,515 — — — 5,515 Income from discontinued operations 8,907 — — — 8,907 Net income 17,994 50,298 51,197 (101,495 ) 17,994 Other comprehensive income 50,855 43,878 43,344 (87,222 ) 50,855 Comprehensive income $ 68,849 $ 94,176 $ 94,541 $ (188,717 ) $ 68,849 Condensed Consolidating Balance Sheet as of September 30, 2018 In thousands Parent Company Guarantors Non Guarantors Adjustments/ Eliminations Consolidated Assets Cash and cash equivalents $ 1,735 $ 3,682 $ 228,653 $ — $ 234,070 Other current assets 87,635 273,697 301,068 (343,585 ) 318,815 Current assets held for sale 188,322 — — — 188,322 Plant, equipment and timberlands, net 24,618 86,722 386,228 — 497,568 Investments in subsidiaries 848,832 659,978 — (1,508,810 ) — Other assets 99,394 — 140,875 — 240,269 Noncurrent assets held for sale 271,731 — — — 271,731 Total assets $ 1,522,267 $ 1,024,079 $ 1,056,824 $ (1,852,395 ) $ 1,750,775 Liabilities and Shareholders' Equity Current liabilities $ 312,663 $ 97,154 $ 154,003 $ (343,585 ) $ 220,235 Current liabilities held for sale 110,163 — — — 110,163 Long-term debt 406,962 68,000 160,444 — 635,406 Deferred income taxes (14,346 ) 18,293 52,652 — 56,599 Other long-term liabilities 59,399 654 20,893 — 80,946 Long-term liabilities held for sale 40,480 — — — 40,480 Total liabilities 915,321 184,101 387,992 (343,585 ) 1,143,829 Shareholders’ equity 606,946 839,978 668,832 (1,508,810 ) 606,946 Total liabilities and shareholders’ equity $ 1,522,267 $ 1,024,079 $ 1,056,824 $ (1,852,395 ) $ 1,750,775 Condensed Consolidating Balance Sheet as of December 31, 2017 In thousands Parent Company Guarantors Non Guarantors Adjustments/ Eliminations Consolidated Assets Cash and cash equivalents $ 1,292 $ 720 $ 114,207 $ - $ 116,219 Other current assets 59,341 217,822 279,626 (277,989 ) 278,800 Current assets held for sale 189,952 — — — $ 189,952 Plant, equipment and timberlands, net 24,671 80,992 409,520 — 515,183 Investments in subsidiaries 829,895 653,128 — (1,483,023 ) — Other assets 82,201 — 140,529 — 222,730 Noncurrent assets held for sale 407,911 — — — 407,911 Total assets $ 1,595,263 $ 952,662 $ 943,882 $ (1,761,012 ) $ 1,730,795 Liabilities and Shareholders' Equity Current liabilities $ 289,967 $ 54,640 $ 167,738 $ (277,989 ) $ 234,356 Current liabilities held for sale 112,820 — — — 112,820 Long-term debt 368,496 51,000 50,602 — 470,098 Deferred income taxes 14,081 16,814 52,676 — 83,571 Other long-term liabilities 59,598 313 19,738 — 79,649 Long-term liabilities held for sale 41,373 — — — 41,373 Total liabilities 886,335 122,767 290,754 (277,989 ) 1,021,867 Shareholders’ equity 708,928 829,895 653,128 (1,483,023 ) 708,928 Total liabilities and shareholders’ equity $ 1,595,263 $ 952,662 $ 943,882 $ (1,761,012 ) $ 1,730,795 Condensed Consolidating Statement of Cash Flows for the nine months ended September 30, 2018 In thousands Parent Company Guarantors Non Guarantors Adjustments/ Eliminations Consolidated Net cash provided (used) by Operating activities $ (40,899 ) $ 3,350 $ 41,337 $ (20,000 ) $ (16,212 ) Investing activities Expenditures for purchases of plant, equipment and timberlands (3,655 ) (13,834 ) (14,666 ) — (32,155 ) Proceeds from disposals of plant, equipment and timberlands, net 17 2,046 10 — 2,073 Advances of intercompany loans — (5,285 ) — 5,285 — Intercompany capital contributed — (315 ) — 315 — Intercompany capital returned — 20,000 — (20,000 ) — Other (68 ) — — — (68 ) Total investing activities (3,706 ) 2,612 (14,656 ) (14,400 ) (30,150 ) Financing activities Net borrowings of long-term debt 38,007 17,000 111,381 — 166,388 Payment of dividends to shareholders (17,064 ) — — — (17,064 ) Borrowings of intercompany loans 5,285 — — (5,285 ) — Intercompany capital received — — 315 (315 ) — Intercompany capital returned — — (20,000 ) 20,000 — Payment of intercompany dividend — (20,000 ) — 20,000 — Payments related to share-based compensation awards and other (1,008 ) — — — (1,008 ) Total financing activities 25,220 (3,000 ) 91,696 34,400 148,316 Effect of exchange rate on cash — — (3,931 ) — (3,931 ) Net increase (decrease) in cash (19,385 ) 2,962 114,446 — 98,023 Change in cash from discontinued operations 19,828 — — — 19,828 Cash at the beginning of period 1,292 720 114,207 — 116,219 Cash at the end of period $ 1,735 $ 3,682 $ 228,653 $ 0 $ 234,070 Condensed Consolidating Statement of Cash Flows for the nine months ended September 30, 2017 In thousands Parent Company Guarantors Non Guarantors Adjustments/ Eliminations Consolidated Net cash provided (used) by Operating activities $ (49,361 ) $ (3,241 ) $ 73,103 $ - $ 20,501 Investing activities Expenditures for purchases of plant, equipment and timberlands (11,221 ) (32,847 ) (13,910 ) — (57,978 ) Proceeds from disposals of plant, equipment and timberlands, net — 209 — — 209 Repayments from intercompany loans — 12,000 — (12,000 ) — Advances of intercompany loans — (13,500 ) — 13,500 — Intercompany capital contributed (2,000 ) (400 ) — 2,400 — Intercompany capital returned — — — — — Other (100 ) — — — (100 ) Total investing activities (13,321 ) (34,538 ) (13,910 ) 3,900 (57,869 ) Financing activities Net borrowings (repayments) of long-term debt 73,298 35,000 (18,711 ) — 89,587 Payment of dividends to shareholders (16,805 ) — — — (16,805 ) Repayments of intercompany loans — — (12,000 ) 12,000 — Borrowings of intercompany loans 13,500 — — (13,500 ) — Intercompany capital received — 2,000 400 (2,400 ) — Payments related to share-based compensation awards and other (128 ) — — — (128 ) Total financing activities 69,865 37,000 (30,311 ) (3,900 ) 72,654 Effect of exchange rate on cash — — 5,448 — 5,448 Net increase (decrease) in cash 7,183 (779 ) 34,330 — 40,734 Change in cash from discontinued operations (11,891 ) — — — (11,891 ) Cash at the beginning of period 5,082 1,461 48,901 — 55,444 Cash at the end of period $ 374 $ 682 $ 83,231 $ 0 $ 84,287

Accounting Policies (Policies)

Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2018
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The unaudited condensed consolidated financial statements (“financial statements”) include the accounts of Glatfelter and its wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated. We prepared these financial statements in accordance with accounting principles generally accepted in the United States of America (“generally accepted accounting principles” or “GAAP”) and pursuant to the rules and regulations of the Securities and Exchange Commission pertaining to interim financial statements. In our opinion, the financial statements reflect all normal, recurring adjustments needed to present fairly our results for the interim periods. When preparing these financial statements, we have assumed that you have read the audited consolidated financial statements included in our 2017 Annual Report on Form 10-K.
Discontinued Operations	Discontinued Operations The results of operations for our Specialty Papers Business Unit have been classified as discontinued operations for all periods presented in the condensed consolidated statements of income. In addition, the related assets and liabilities of this business unit have been classified as held for sale in the condensed consolidated balance sheets for all periods presented.
Reclassification	Reclassification As a result of adopting the provisions of Accounting Standards Update (“ASU”) No. 2017-07, Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Cost we reclassified certain amounts of periodic benefit expense for previously reported periods from Cost of products sold and Selling, general and administrative expense to Non-operating Expense.
Accounting Estimates	Accounting Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingencies as of the balance sheet date and the reported amounts of revenues and expenses during the reporting period. Management believes the estimates and assumptions used in the preparation of these financial statements are reasonable, based upon currently available facts and known circumstances, but recognizes that actual results may differ from those estimates and assumptions.
Revenue Recognition	Revenue Recognition We adopted ASU No. 2014-09, Revenue from Contracts with Customers in the first quarter of 2018. This ASU clarifies the principles for recognizing revenue and establishes expanded disclosure requirements; however, the adoption of ASU No. 2014-09 had no impact on the timing or amount of revenue recognized for any period presented. Refer to Note 4 for additional information about the disaggregation of our net sales. Our revenue is earned primarily from the manufacture and sale of engineered materials (“product sales”). Revenue is earned pursuant to contracts, supply agreements and other arrangements with a wide variety of customers. Our performance obligation is to produce a specified product according to technical specifications and, in substantially all instances, to deliver the product. Revenue from product sales is earned at a point in time. We recognize revenue on product sales when we have satisfied our performance obligation and control of the product has passed to the customer thereby entitling us to payment. With respect to substantially all arrangements for product sales, this is deemed to occur when title transfers in accordance with specified shipping terms. The prices are fixed at the time the sales arrangement is entered into and payment terms are customary for similar arrangements in our industry. Many of our agreements include customary provisions for volume rebates, discounts and similar incentives. In addition, we are obligated for products that fail to meet agreed upon specification. Provisions for such items are estimated and recorded as sales deductions in the period in which the related revenue is recognized.
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements In February 2018, the FASB issued ASU No. 2018-02, “Reclassification of Certain Tax Effects From Accumulated Other Comprehensive Income. (“ASU No. 2018-02” ).” In December 2017, Tax Cuts and Jobs Act (“TCJA”) was passed into law and, among other provisions, reduced the statutory federal tax rate from 35% to 21%. The change in the tax rate impacted the carrying value of deferred tax assets and liabilities. ASU No. 2018-02 allows a reclassification from accumulated other comprehensive income (“AOCI”) to retained earnings for stranded tax effects resulting from the TCJA. We elected to adopt ASU No. 2018-02 in the first quarter of 2018, and we reclassified $22.3 million of net deferred tax benefits from AOCI to Retained earnings. In February 2016, the FASB issued ASU No. 2016-02, “ Leases (Topic 842) In August 2017, the FASB issued ASU No. 2017-12, "Derivatives and Hedging (Topic 815), Targeted Improvements to Accounting for Hedging Activities" In June 2016, the FASB issued ASU No. 2016-13 “ Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments”

Revenue (Tables)

Revenue (Tables)	9 Months Ended
	Sep. 30, 2018
Disaggregation Of Revenue [Abstract]
Summary of Disaggregated Information Pertaining to Net Sales	The following tables set forth disaggregated information pertaining to our net sales: Three months ended September 30 Nine months ended September 30 In thousands 2018 2017 2018 2017 Composite Fibers Food & beverage $ 68,534 $ 66,539 $ 209,117 $ 194,575 Wallcovering 26,135 28,365 82,056 76,993 Technical specialties 20,615 21,309 63,182 56,692 Composite laminates 10,544 10,558 28,902 28,652 Metallized 13,348 15,578 40,450 43,678 139,176 142,349 423,707 400,590 Advanced Airlaid Materials Feminine hygiene 46,054 46,623 141,464 133,550 Specialty wipes 11,104 8,899 29,366 21,941 Adult incontinence 5,036 3,761 14,658 10,625 Home care 4,009 3,715 11,911 9,642 Other 4,476 4,773 15,700 14,687 70,679 67,771 213,099 190,445 TOTAL $ 209,855 $ 210,120 $ 636,806 $ 591,035 Three months ended September 30 Nine months ended September 30 In thousands 2018 2017 2018 2017 Composite Fibers Europe, Middle East and Africa $ 87,870 $ 91,944 $ 274,442 $ 259,532 Americas 30,205 26,198 83,245 76,734 Asia Pacific 21,101 24,207 66,020 64,324 139,176 142,349 423,707 400,590 Advanced Airlaid Materials Europe, Middle East and Africa 35,283 36,025 107,416 98,158 Americas 34,899 31,297 104,027 91,229 Asia Pacific 497 449 1,656 1,058 70,679 67,771 213,099 190,445 TOTAL $ 209,855 $ 210,120 $ 636,806 $ 591,035

Discontinued Operations (Tables

Discontinued Operations (Tables)	9 Months Ended
	Sep. 30, 2018
Discontinued Operations And Disposal Groups [Abstract]
Summary of Discontinued Operations Included in Condensed Consolidated Statements of Income	The following table sets forth a summary of discontinued operations included in the condensed consolidated statements of income: Three months ended September 30 Nine months ended September 30 In thousands 2018 2017 2018 2017 Net sales $ 201,288 $ 203,206 $ 590,757 $ 600,346 Energy and related sales, net 844 1,236 3,217 3,346 Total revenues 202,132 204,442 593,974 603,692 Costs of products sold 181,628 188,076 572,820 569,840 Gross profit 20,504 16,366 21,154 33,852 Selling, general and administrative expenses 6,058 5,997 18,566 17,971 (Gains) losses on dispositions of plant, equipment and timberlands, net 3 70 (440 ) 118 Operating income 14,443 10,299 3,028 15,763 Non-operating income (expense) Interest expense (2,281 ) (1,221 ) (6,017 ) (3,005 ) Other, net (1,174 ) 583 (81 ) 1,664 Impairment charge (125,644 ) — (125,644 ) — Income (loss) before income taxes (114,656 ) 9,661 (128,714 ) 14,422 Income tax provision (benefit) (19,530 ) 2,601 (28,361 ) 5,515 Income (loss) from discontinued operations $ (95,126 ) $ 7,060 $ (100,353 ) $ 8,907
Summary of Carrying Amounts of Major Asset and Liabilities Classified as Held for Sale in Condensed Consolidated Balance Sheets	The following table sets forth the carrying amounts of Specialty Papers’ major asset and liabilities, which were classified as held for sale in the condensed consolidated balance sheets: September 30 December 31 In thousands 2018 2017 Assets Accounts receivable, net $ 73,608 $ 63,567 Inventories 105,311 115,858 Prepaid expenses and other current assets 9,403 10,527 Current assets held for sale $ 188,322 $ 189,952 Plant, equipment and timberlands, net 210,891 350,560 Other assets 60,840 57,351 Noncurrent assets held for sale $ 271,731 $ 407,911 Liabilities Accounts payable $ 76,257 $ 77,266 Other current liabilities 33,906 35,554 Current liabilities held for sale $ 110,163 $ 112,820 Long-term liabilities held for sale $ 40,480 $ 41,373
Summary of Cash Flows from Discontinued Operations Included in Condensed Consolidated Statements of Cash Flows	The following table sets forth a summary of cash flows from discontinued operations which is included in the condensed consolidated statements of cash flows: Nine months ended September 30 In thousands 2018 2017 Net cash provided by operating activities $ 33,721 $ 32,295 Net cash used in investing activities (14,018 ) (44,186 ) Net cash provided by financing activities 125 $ — Change in cash and cash equivalents from discontinued operations $ 19,828 $ (11,891 )

Gains on Dispositions of Plan_2

Gains on Dispositions of Plant, Equipment and Timberlands (Tables)	9 Months Ended
	Sep. 30, 2018
Property Plant And Equipment [Abstract]
Summary for Sale of Timberlands and Other Assets	During the first nine months of 2018 and 2017 we completed the following sales of timberlands and other assets: Dollars in thousands Acres Proceeds Gain (loss) 2018 Timberlands 1,103 $ 2,046 $ 1,929 Other n/a 27 10 Total $ 2,073 $ 1,939 2017 Timberlands 332 $ 209 $ 188 Other n/a - (20 ) Total $ 209 $ 168

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2018
Earnings Per Share [Abstract]
Details of Basic and Diluted Earnings Per Share (EPS) from Continuing Operations	The following table sets forth the details of basic and diluted earnings per share (“EPS”) from continuing operations: Three months ended September 30 In thousands, except per share 2018 2017 Income (loss) from continuing operations $ (705 ) $ 5,045 Weighted average common shares outstanding used in basic EPS 43,792 43,617 Effect of dilutive SOSARs, PSAs and RSUs — 565 Weighted average common shares outstanding and common share equivalents used in diluted EPS 43,792 44,182 Earnings (loss) per share from continuing operations Basic $ (0.02 ) $ 0.12 Diluted (0.02 ) 0.11 Nine months ended September 30 In thousands, except per share 2018 2017 Income from continuing operations $ 2,841 $ 9,087 Weighted average common shares outstanding used in basic EPS 43,754 43,601 Effect of dilutive SOSARs, PSAs and RSUs — 809 Weighted average common shares outstanding and common share equivalents used in diluted EPS 43,754 44,410 Earnings per share from continuing operations Basic $ 0.06 $ 0.21 Diluted 0.06 0.21
Summary of Numerator Used to Compute Per Share Income Or Loss From Discontinued Operations	The numerator used to compute per share income or loss from discontinued operations is summarized below: 2018 2017 In thousands Three months ended September 30 Income (loss) $ (95,126 ) $ 7,060 Nine months ended September 30 Income (loss) $ (100,353 ) $ 8,907
Number of Potential Common Shares that have been Excluded from Computation of Diluted Earnings Per Share for Indicated Period Due to Their Anti-Dilutive Nature	The following table sets forth potential common shares outstanding that were not included in the computation of diluted EPS for the periods indicated, because their effect would be anti-dilutive: September 30 In thousands 2018 2017 Three months ended 2,393 967 Nine months ended 2,393 593

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Tables)	9 Months Ended
	Sep. 30, 2018
Equity [Abstract]
Schedule of Changes in Accumulated Other Comprehensive Income (Losses)	The following table sets forth details of the changes in accumulated other comprehensive income (losses) for the three months and nine months ended September 30, 2018 and 2017. In thousands Currency translation adjustments Unrealized gain (loss) on cash flow hedges Change in pensions Change in other postretirement defined benefit plans Total Balance at July 1, 2018 $ (62,315 ) $ (1,345 ) $ (115,167 ) $ 4,221 $ (174,606 ) Other comprehensive income (loss) before reclassifications (net of tax) (3,217 ) 627 12,981 4,699 15,090 Amounts reclassified from accumulated other comprehensive income (net of tax) — 989 4,053 (161 ) 4,881 Net current period other comprehensive income (loss) (3,217 ) 1,616 17,034 4,538 19,971 Balance at September 30, 2018 $ (65,532 ) $ 271 $ (98,133 ) $ 8,759 $ (154,635 ) Balance at July 1, 2017 $ (66,879 ) $ (3,097 ) $ (105,824 ) $ 4,719 $ (171,081 ) Other comprehensive income (loss) before reclassifications (net of tax) 16,559 (1,533 ) — — 15,026 Amounts reclassified from accumulated other comprehensive income (net of tax) — 19 2,424 (139 ) 2,304 Net current period other comprehensive income (loss) 16,559 (1,514 ) 2,424 (139 ) 17,330 Balance at September 30, 2017 $ (50,320 ) $ (4,611 ) $ (103,400 ) $ 4,580 $ (153,751 ) In thousands Currency translation adjustments Unrealized gain (loss) on cash flow hedges Change in pensions Change in other postretirement defined benefit plans Total Balance at January 1, 2018 $ (41,839 ) $ (4,092 ) $ (98,295 ) $ 3,551 $ (140,675 ) Amount reclassified for adoption of ASU No. 2018-02 (23,297 ) 999 (22,298 ) Balance as adjusted at January 1, 2018 (41,839 ) (4,092 ) (121,592 ) 4,550 (162,973 ) Other comprehensive income (loss) before reclassifications (net of tax) (23,693 ) 778 12,981 4,699 (5,235 ) Amounts reclassified from accumulated other comprehensive income (net of tax) — 3,585 10,478 (490 ) 13,573 Net current period other comprehensive income (loss) (23,693 ) 4,363 23,459 4,209 8,338 Balance at September 30, 2018 $ (65,532 ) $ 271 $ (98,133 ) $ 8,759 $ (154,635 ) Balance at January 1, 2017 $ (100,448 ) $ 1,500 $ (110,656 ) $ 4,998 $ (204,606 ) Other comprehensive income (loss) before reclassifications (net of tax) 50,128 (4,868 ) — 1 45,261 Amounts reclassified from accumulated other comprehensive income (net of tax) — (1,243 ) 7,256 (419 ) 5,594 Net current period other comprehensive income (loss) 50,128 (6,111 ) 7,256 (418 ) 50,855 Balance at September 30, 2017 $ (50,320 ) $ (4,611 ) $ (103,400 ) $ 4,580 $ (153,751 )
Schedule of Amounts Reclassified from Accumulated Other Comprehensive Income and Into the Condensed Consolidated Statements of Income	Reclassifications out of accumulated other comprehensive income and into the condensed consolidated statements of income were as follows: Three months ended September 30 Nine months ended September 30 In thousands 2018 2017 2018 2017 Description Line Item in Statements of Income Cash flow hedges (Note 13) (Gains) losses on cash flow hedges $ 1,344 $ 29 $ 4,939 $ (1,687 ) Costs of products sold Tax expense (benefit) (355 ) (10 ) (1,354 ) 444 Income tax provision Net of tax 989 19 3,585 (1,243 ) Retirement plan obligations (Note 8) Amortization of deferred benefit pension plans Prior service costs 5 7 16 17 Other, net Actuarial losses 2,060 1,777 6,179 5,332 Other, net Discontinued operations amortization of deferred benefit pension plans 2,171 2,002 6,515 5,982 Curtailment recognition 1,805 — 1,805 — Discontinued operations 6,041 3,786 14,515 11,331 Tax benefit (1,988 ) (1,362 ) (4,037 ) (4,075 ) Income tax provision Net of tax 4,053 2,424 10,478 7,256 Amortization of deferred benefit other plans Prior service costs — — — — Other, net Actuarial gains (16 ) (4 ) (49 ) (10 ) Other, net Discontinued operations amortization of deferred benefit other plans (201 ) (135 ) (604 ) (409 ) (217 ) (139 ) (653 ) (419 ) Tax expense 56 — 163 — Income tax provision Net of tax (161 ) (139 ) (490 ) (419 ) Total reclassifications, net of tax $ 4,881 $ 2,304 $ 13,573 $ 5,594

Income Taxes (Tables)

Income Taxes (Tables)	9 Months Ended
	Sep. 30, 2018
Income Tax Disclosure [Abstract]
Summary of Tax Years that Remain Subject to Examination by Major Jurisdiction	The following table summarizes, by major jurisdiction, tax years that remain subject to examination: Open Tax Years Jurisdiction Examinations not yet initiated Examination in progress United States Federal 2015 - 2017 N/A State 2013 - 2017 2014 Canada (1) 2010-2013 2014 - 2017 Germany (1) 2016 - 2017 2011 - 2015 France N/A 2012; 2015-2017 United Kingdom 2016 - 2017 N/A Philippines 2015, 2017 2016 (1) includes provincial or similar local jurisdictions, as applicable
Summary of Information Related to Interest and Penalties on Uncertain Tax Positions	The following table summarizes information related to interest and penalties on uncertain tax positions: Nine months ended September 30 In millions 2018 2017 Interest expense (income) $ 0.3 $ 0.3 Penalties — — September 30 December 31 2018 2017 Accrued interest payable $ 1.1 $ 0.8

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2018
Restricted Stock Units (RSU) and Performance Share Awards (PSAs) [Member]
Summary of Share Based Compensation Activity	The following table summarizes RSU and PSA activity during periods indicated: Units 2018 2017 Balance at January 1, 929,386 679,038 Granted 398,005 370,458 Forfeited (73,673 ) (93,045 ) Shares delivered (151,371 ) (26,352 ) Balance at September 30, 1,102,347 930,099
Compensation Expense for Stock Option Activity Included in Continuing Operations	The following table sets forth aggregate RSU and PSA compensation expense included in continuing operations for the periods indicated: September 30 In thousands 2018 2017 Three months ended $ 1,146 $ 1,494 Nine months ended 4,283 3,293
Stock Only Stock Appreciation Rights (SOSARs) [Member]
Summary of Share Based Compensation Activity	The following table sets forth information related to outstanding SOSARS for the nine months ended September 30: 2018 2017 SOSARS Shares Wtd Avg Exercise Price Shares Wtd Avg Exercise Price Outstanding at January 1, 2,561,846 $ 17.87 2,736,616 $ 17.64 Granted — — — — Exercised (158,545 ) 13.31 (33,050 ) 14.65 Canceled / forfeited (51,285 ) 22.35 (17,630 ) 18.46 Outstanding at September 30, 2,352,016 $ 18.08 2,685,936 $ 17.67
Compensation Expense for Stock Option Activity Included in Continuing Operations	The following table sets forth SOSAR compensation expense included in continuing operations for the periods indicated: September 30 In thousands 2018 2017 Three months ended $ 67 $ 233 Nine months ended 311 1,038

Retirement Plans and Other Po_2

Retirement Plans and Other Post-Retirement Benefits (Tables)	9 Months Ended
	Sep. 30, 2018
Compensation And Retirement Disclosure [Abstract]
Schedule of Net Periodic Costs of Pension and Post Retirement Medical Benefit Plans Included in Continuing Operations	The following tables provide information with respect to the net periodic costs of our pension and post-retirement medical benefit plans included in continuing operations. Three months ended September 30 In thousands 2018 2017 Pension Benefits Service cost $ 595 $ 487 Interest cost 3,241 3,413 Expected return on plan assets (5,531 ) (5,514 ) Amortization of prior service cost 5 7 Amortization of unrecognized loss 2,060 1,777 Total net periodic benefit cost $ 370 $ 170 Other Benefits Service cost $ 16 $ 16 Interest cost 80 91 Amortization of actuarial gain (16 ) (4 ) Total net periodicbenefit cost $ 80 $ 103 Nine months ended September 30 In thousands 2018 2017 Pension Benefits Service cost $ 1,784 $ 1,462 Interest cost 9,723 10,240 Expected return on plan assets (16,592 ) (16,542 ) Amortization of prior service cost 16 17 Amortization of unrecognized loss 6,179 5,332 Total net periodic benefit cost $ 1,110 $ 509 Other Benefits Service cost $ 46 $ 49 Interest cost 239 275 Amortization of actuarial gain (49 ) (10 ) Total net periodic benefit cost $ 236 $ 314

Inventories (Tables)

Inventories (Tables)	9 Months Ended
	Sep. 30, 2018
Inventory Disclosure [Abstract]
Inventories, Net of Reserves	Inventories, net of reserves, were as follows: September 30 December 31 In thousands 2018 2017 Raw materials $ 45,595 $ 39,797 In-process and finished 90,113 65,277 Supplies 35,278 31,127 Total $ 170,986 $ 136,201

Capitalized Interest (Tables)

Capitalized Interest (Tables)	9 Months Ended
	Sep. 30, 2018
Interest Expense [Abstract]
Summary of Interest Incurred, Capitalized and Expensed Included in Continuing Operations	The following table sets forth details of interest incurred, capitalized and expensed included in continuing operations: Three months ended September 30 Nine months ended September 30 In thousands 2018 2017 2018 2017 Interest cost incurred $ 3,965 $ 3,856 $ 11,633 $ 11,219 Interest capitalized - 532 396 1,194 Interest expense $ 3,965 $ 3,324 $ 11,237 $ 10,025

Long-Term Debt (Tables)

Long-Term Debt (Tables)	9 Months Ended
	Sep. 30, 2018
Debt Disclosure [Abstract]
Summary of Long-Term Debt	Long-term debt is summarized as follows: September 30 December 31 In thousands 2018 2017 Revolving credit facility, due Mar. 2020 $ 345,962 $ 171,200 5.375% Notes, due Oct. 2020 250,000 250,000 2.40% Term Loan, due Jun. 2022 6,201 7,710 2.05% Term Loan, due Mar. 2023 27,802 33,607 1.30% Term Loan, due Jun. 2023 7,855 9,423 1.55% Term Loan, due Sep. 2025 9,928 11,390 Total long-term debt 647,748 483,330 Less current portion (10,904 ) (11,298 ) Unamortized deferred issuance costs (1,438 ) (1,934 ) Long-term debt, net of current portion $ 635,406 $ 470,098
Summary of Debts Borrowed by Subsidiary	Glatfelter Gernsbach GmbH & Co. KG (“Gernsbach”), a wholly-owned subsidiary of ours, entered into a series of borrowing agreements with IKB Deutsche Industriebank AG, Düsseldorf (“IKB”) as summarized below: Amounts in thousands Original Principal Interest Rate Maturity Borrowing date Apr. 11, 2013 € 42,700 2.05 % Mar. 2023 Sep. 4, 2014 10,000 2.40 % Jun. 2022 Oct. 10, 2015 2,608 1.55 % Sep. 2025 Apr. 26, 2016 10,000 1.30 % Jun. 2023 May 4, 2016 7,195 1.55 % Sep. 2025

Fair Value of Financial Instr_2

Fair Value of Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2018
Fair Value Disclosures [Abstract]
Carrying Value and Fair Value of Long-Term Debt	The following table sets forth carrying value and fair value of long-term debt: September 30, 2018 December 31, 2017 In thousands Carrying Value Fair Value Carrying Value Fair Value Variable rate debt $ 345,962 $ 345,962 $ 171,200 $ 171,200 Fixed-rate bonds 250,000 250,633 250,000 253,823 2.40% Term loan 6,201 6,332 7,710 7,889 2.05% Term loan 27,802 28,206 33,607 34,122 1.30% Term Loan 7,855 7,825 9,423 9,370 1.55% Term loan 9,928 9,874 11,390 11,320 Total $ 647,748 $ 648,832 $ 483,330 $ 487,724

Financial Derivatives and Hed_2

Financial Derivatives and Hedging Activities (Tables)	9 Months Ended
	Sep. 30, 2018
Fair Values of Derivative Instruments	Fair Value Measurements The following table summarizes the fair values of derivative instruments for the period indicated and the line items in the accompanying condensed consolidated balance sheets where the instruments are recorded: In thousands September 30 2018 December 31 2017 September 30 2018 December 31 2017 Prepaid Expenses and Other Other Balance sheet caption Current Assets Current Liabilities Designated as hedging: Forward foreign currency exchange contracts $ 1,489 $ 1,066 $ 522 $ 4,787 Not designated as hedging: Forward foreign currency exchange contracts $ 203 $ 151 $ 309 $ 43
Income or (Loss) from Derivative Instruments Recognized in Results of Operations	The following table summarizes the amount of income or (loss) from derivative instruments recognized in our results of operations for the periods indicated and the line items in the accompanying condensed consolidated statements of income where the results are recorded: Three months ended September 30 Nine months ended September 30 In thousands 2018 2017 2018 2017 Designated as hedging: Forward foreign currency exchange contracts: Effective portion – cost of products sold $ (1,344 ) $ (29 ) $ (4,939 ) $ 1,687 Ineffective portion – other – net 207 40 (5 ) 126 Not designated as hedging: Forward foreign currency exchange contracts: Other – net $ (477 ) $ 328 $ (1,078 ) $ 719
Fair Value Amounts Recorded as Component of Accumulated Other Comprehensive Income (Loss)	A rollforward of fair value amounts recorded as a component of accumulated other comprehensive income (loss) is as follows: In thousands 2018 2017 Balance at January 1, $ (5,640 ) $ 1,882 Deferred (losses) gains on cash flow hedges 1,142 (6,455 ) Reclassified to earnings 4,939 (1,687 ) Balance at September 30, $ 441 $ (6,260 )
Designated as Hedging [Member]
Outstanding Derivatives Used to Hedge Foreign Exchange Risks	We had the following outstanding derivatives that were used to hedge foreign exchange risks associated with forecasted transactions and designated as hedging instruments: In thousands September 30 2018 December 31 2017 Derivative Sell/Buy - sell notional Philippine Peso / British Pound — 19,047 Euro / British Pound 16,130 13,586 Euro / U.S. Dollar — 1,048 U.S. Dollar / Euro 414 946 Canadian Dollar / U.S. Dollar 168 — Sell/Buy - buy notional Euro / Philippine Peso 1,147,101 890,096 British Pound / Philippine Peso 1,026,551 797,496 U.S. Dollar / Euro — 4,253 Euro / U.S. Dollar 74,569 60,519 U.S. Dollar / Canadian Dollar 31,394 32,265 British Pound / Euro — 335
Not Designated as Hedging [Member]
Outstanding Derivatives Used to Hedge Foreign Exchange Risks	The following sets forth derivatives used to mitigate the impact changes in currency exchange rates have on balance sheet monetary assets and liabilities: In thousands September 30 2018 December 31 2017 Derivative Sell/Buy - sell notional U.S. Dollar / British Pound 22,500 17,500 British Pound / Euro 1,000 1,000 Canadian / U.S. dollar 2,500 - Sell/Buy - buy notional Euro / U.S. Dollar 11,000 4,500 British Pound / Euro 10,000 13,000

Commitments, Contingencies an_2

Commitments, Contingencies and Legal Proceedings (Tables)	9 Months Ended
	Sep. 30, 2018
Commitments And Contingencies Disclosure [Abstract]
Schedule of Reserves	Reserves for the Site. Our reserve for all remaining claims against us relating to PCB contamination is set forth below: Nine months ended September 30 In thousands 2018 2017 Balance at January 1, $ 43,144 $ 52,788 Payments (3,014 ) (9,581 ) Assumption of WTM I escrow 4,746 - Accretion 115 - Balance at September 30, $ 44,991 $ 43,207

Segment Information (Tables)

Segment Information (Tables)	9 Months Ended
	Sep. 30, 2018
Segment Reporting [Abstract]
Schedule of Financial and Other Information by Business Unit	The following tables set forth financial and other information by business unit for the period indicated: Three months ended September 30 Advanced Airlaid Other and Dollars in millions Composite Fibers Materials Unallocated Total 2018 2017 2018 2017 2018 2017 2018 2017 Net sales $ 139.2 $ 142.3 $ 70.7 $ 67.8 $ — $ — $ 209.9 $ 210.1 Cost of products sold 116.8 115.0 62.3 57.2 0.9 0.5 180.0 172.7 Gross profit (loss) 22.4 27.3 8.4 10.6 (0.9 ) (0.5 ) 29.9 37.4 SG&A 10.5 10.9 2.9 2.4 12.4 13.8 25.8 27.1 (Gains) losses on dispositions of plant, equipment and timberlands, net — — — — (0.2 ) (0.1 ) (0.2 ) (0.1 ) Total operating income (loss) 11.9 16.4 5.5 8.2 (13.1 ) (14.2 ) 4.3 10.4 Non-operating expense — — — — (1.6 ) (3.7 ) (1.6 ) (3.7 ) Income (loss) before income taxes $ 11.9 $ 16.4 $ 5.5 $ 8.2 $ (14.7 ) $ (17.9 ) $ 2.8 $ 6.7 Supplementary Data Net tons sold (thousands) 37.4 39.7 24.0 23.8 — — 61.5 63.5 Depreciation, depletion and amortization $ 7.1 $ 7.1 $ 3.4 $ 2.5 $ 1.0 $ 0.6 $ 11.5 $ 10.2 Capital expenditures 3.0 3.8 1.9 12.6 1.3 4.6 6.2 21.0 Nine months ended September 30 Advanced Airlaid Other and Dollars in millions Composite Fibers Materials Unallocated Total 2018 2017 2018 2017 2018 2017 2018 2017 Net sales $ 423.7 $ 400.6 $ 213.1 $ 190.4 $ — $ — $ 636.8 $ 591.0 Cost of products sold 349.5 322.2 184.7 160.7 2.9 2.9 537.1 485.8 Gross profit (loss) 74.2 78.4 28.4 29.7 (2.9 ) (2.9 ) 99.7 105.3 SG&A 34.0 32.9 8.1 6.9 39.8 41.7 81.9 81.5 (Gains) losses on dispositions of plant, equipment and timberlands, net — — — — (1.9 ) (0.2 ) (1.9 ) (0.2 ) Total operating income (loss) 40.2 45.5 20.3 22.8 (40.8 ) (44.4 ) 19.8 23.9 Non-operating expense — — — — (9.9 ) (10.4 ) (9.9 ) (10.4 ) Income (loss) before income taxes $ 40.2 $ 45.5 $ 20.3 $ 22.8 $ (50.7 ) $ (54.8 ) $ 9.9 $ 13.5 Supplementary Data Net tons sold (thousands) 110.4 112.9 72.4 69.5 — — 182.8 182.4 Depreciation, depletion and amortization $ 21.7 $ 20.9 $ 9.7 $ 7.1 $ 3.3 $ 2.3 $ 34.7 $ 30.3 Capital expenditures 10.9 10.6 17.6 36.1 3.7 11.3 32.2 58.0

Condensed Consolidating Finan_2

Condensed Consolidating Financial Statements (Tables)	9 Months Ended
	Sep. 30, 2018
Condensed Financial Information Of Parent Company Only Disclosure [Abstract]
Condensed Consolidating Statement of Income	Condensed Consolidating Statement of Income for the three months ended September 30, 2018 In thousands Parent Company Guarantors Non Guarantors Adjustments/ Eliminations Consolidated Net sales $ - $ 35,285 $ 203,910 $ (29,340 ) $ 209,855 Costs of products sold 945 32,727 175,651 (29,340 ) 179,983 Gross profit (loss) (945 ) 2,558 28,259 — 29,872 Selling, general and administrative expenses 10,557 43 15,199 — 25,799 Gain on dispositions of plant equipment and timberlands, net — (249 ) — — (249 ) Operating income (loss) (11,502 ) 2,764 13,060 — 4,322 Other non-operating income (expense) Interest expense (4,439 ) (629 ) (446 ) 1,549 (3,965 ) Interest income 134 1,528 34 (1,549 ) 147 Equity in earnings of subsidiaries 13,217 10,783 — (24,000 ) — Other, net 341 1,077 835 — 2,253 Total other non-operating income (expense) 9,253 12,759 423 (24,000 ) (1,565 ) Income (loss) from continuing operations before income taxes (2,249 ) 15,523 13,483 (24,000 ) 2,757 Income tax provision (benefit) (1,544 ) 2,349 2,657 — 3,462 Income (loss) from continuing operations (705 ) 13,174 10,826 (24,000 ) (705 ) Discontinued operations: Income (loss) from discontinued operations before income taxes (114,656 ) — — — (114,656 ) Income tax provision (benefit) (19,530 ) — — — (19,530 ) Income (loss) from discontinued operations (95,126 ) — — — (95,126 ) Net income (loss) (95,831 ) 13,174 10,826 (24,000 ) (95,831 ) Other comprehensive income (loss) 19,971 (1,767 ) (3,187 ) 4,954 19,971 Comprehensive income (loss) $ (75,860 ) $ 11,407 $ 7,639 $ (19,046 ) $ (75,860 ) Condensed Consolidating Statement of Income for the nine months ended September 30, 2018 In thousands Parent Company Guarantors Non Guarantors Adjustments/ Eliminations Consolidated Net sales $ - $ 87,617 $ 628,624 $ (79,435 ) $ 636,806 Costs of products sold 4,254 82,089 530,165 (79,435 ) 537,073 Gross profit (loss) (4,254 ) 5,528 98,459 — 99,733 Selling, general and administrative expenses 35,457 1,716 44,742 — 81,915 (Gain) loss on dispositions of plant equipment and timberlands, net (17 ) (1,929 ) 7 — (1,939 ) Operating income (loss) (39,694 ) 5,741 53,710 — 19,757 Other non-operating income (expense) Interest expense (12,773 ) (1,670 ) (1,320 ) 4,526 (11,237 ) Interest income 413 4,219 121 (4,526 ) 227 Equity in earnings of subsidiaries 49,421 45,745 — (95,166 ) Other, net (1,634 ) (1,657 ) 4,422 — 1,131 Total other non-operating income (expense) 35,427 46,637 3,223 (95,166 ) (9,879 ) Income (loss) before income taxes (4,267 ) 52,378 56,933 (95,166 ) 9,878 Income tax provision (benefit) (7,108 ) 3,022 11,123 — 7,037 Income (loss) from continuing operations 2,841 49,356 45,810 (95,166 ) 2,841 Discontinued operations: Income (loss) from discontinued operations before income taxes (128,714 ) — — — (128,714 ) Income tax provision (benefit) (28,361 ) — — — (28,361 ) Income (loss) from discontinued operations (100,353 ) — — — (100,353 ) Net income (loss) (97,512 ) 49,356 45,810 (95,166 ) (97,512 ) Other comprehensive income (loss) 8,338 (19,318 ) (19,301 ) 38,619 8,338 Comprehensive income (loss) $ (89,174 ) $ 30,038 $ 26,509 $ (56,547 ) $ (89,174 ) Condensed Consolidating Statement of Income for the three months ended September 30, 2017 In thousands Parent Company Guarantors Non Guarantors Adjustments/ Eliminations Consolidated Net sales $ - $ 20,588 $ 211,331 $ (21,799 ) $ 210,120 Costs of products sold 1,596 19,525 173,423 (21,799 ) 172,745 Gross profit (1,596 ) 1,063 37,908 — 37,375 Selling, general and administrative Expenses 12,414 536 14,133 — 27,083 (Gain) loss on dispositions of plant equipment and timberlands, net 1 (114 ) 20 — (93 ) Operating income (loss) (14,011 ) 641 23,755 — 10,385 Other non-operating income (expense) Interest expense (4,018 ) (300 ) (436 ) 1,430 (3,324 ) Interest income 160 1,316 5 (1,430 ) 51 Equity in earnings of subsidiaries 17,880 18,096 — (35,976 ) — Other, net 589 (1,920 ) 944 — (387 ) Total other non-operating income (expense) 14,611 17,192 513 (35,976 ) (3,660 ) Income (loss) from continuing operations before income taxes 600 17,833 24,268 (35,976 ) 6,725 Income tax provision (benefit) (4,445 ) (47 ) 6,172 — 1,680 Income (loss) from continuing operations 5,045 17,880 18,096 (35,976 ) 5,045 Discontinued operations: Income from discontinued operations before income taxes 9,661 — — — 9,661 Income tax provision 2,601 — — — 2,601 Income from discontinued operations 7,060 — — — 7,060 Net income 12,105 17,880 18,096 (35,976 ) 12,105 Other comprehensive income 17,330 14,812 14,959 (29,771 ) 17,330 Comprehensive income $ 29,435 $ 32,692 $ 33,055 $ (65,747 ) $ 29,435 Condensed Consolidating Statement of Income for the nine months ended September 30, 2017 In thousands Parent Company Guarantors Non Guarantors Adjustments/ Eliminations Consolidated Net sales $ - $ 63,173 $ 591,926 $ (64,064 ) $ 591,035 Costs of products sold 1,223 60,158 488,466 (64,064 ) 485,783 Gross profit (1,223 ) 3,015 103,460 — 105,252 Selling, general and administrative Expenses 37,022 846 43,662 — 81,530 (Gain) loss on dispositions of plant equipment and timberlands, net — (188 ) 20 — (168 ) Operating income (loss) (38,245 ) 2,357 59,778 — 23,890 Other non-operating income (expense) Interest expense (12,078 ) (619 ) (1,377 ) 4,049 (10,025 ) Interest income 451 3,714 93 (4,049 ) 209 Equity in earnings of subsidiaries 50,298 51,197 — (101,495 ) — Other, net 1,873 (6,445 ) 4,014 — (558 ) Total other non-operating income (expense) 40,544 47,847 2,730 (101,495 ) (10,374 ) Income before income taxes 2,299 50,204 62,508 (101,495 ) 13,516 Income tax provision (benefit) (6,788 ) (94 ) 11,311 — 4,429 Income (loss) from continuing operations 9,087 50,298 51,197 (101,495 ) 9,087 Discontinued operations: Income from discontinued operations before income taxes 14,422 — — — 14,422 Income tax provision 5,515 — — — 5,515 Income from discontinued operations 8,907 — — — 8,907 Net income 17,994 50,298 51,197 (101,495 ) 17,994 Other comprehensive income 50,855 43,878 43,344 (87,222 ) 50,855 Comprehensive income $ 68,849 $ 94,176 $ 94,541 $ (188,717 ) $ 68,849
Condensed Consolidating Balance Sheet	Condensed Consolidating Balance Sheet as of September 30, 2018 In thousands Parent Company Guarantors Non Guarantors Adjustments/ Eliminations Consolidated Assets Cash and cash equivalents $ 1,735 $ 3,682 $ 228,653 $ — $ 234,070 Other current assets 87,635 273,697 301,068 (343,585 ) 318,815 Current assets held for sale 188,322 — — — 188,322 Plant, equipment and timberlands, net 24,618 86,722 386,228 — 497,568 Investments in subsidiaries 848,832 659,978 — (1,508,810 ) — Other assets 99,394 — 140,875 — 240,269 Noncurrent assets held for sale 271,731 — — — 271,731 Total assets $ 1,522,267 $ 1,024,079 $ 1,056,824 $ (1,852,395 ) $ 1,750,775 Liabilities and Shareholders' Equity Current liabilities $ 312,663 $ 97,154 $ 154,003 $ (343,585 ) $ 220,235 Current liabilities held for sale 110,163 — — — 110,163 Long-term debt 406,962 68,000 160,444 — 635,406 Deferred income taxes (14,346 ) 18,293 52,652 — 56,599 Other long-term liabilities 59,399 654 20,893 — 80,946 Long-term liabilities held for sale 40,480 — — — 40,480 Total liabilities 915,321 184,101 387,992 (343,585 ) 1,143,829 Shareholders’ equity 606,946 839,978 668,832 (1,508,810 ) 606,946 Total liabilities and shareholders’ equity $ 1,522,267 $ 1,024,079 $ 1,056,824 $ (1,852,395 ) $ 1,750,775 Condensed Consolidating Balance Sheet as of December 31, 2017 In thousands Parent Company Guarantors Non Guarantors Adjustments/ Eliminations Consolidated Assets Cash and cash equivalents $ 1,292 $ 720 $ 114,207 $ - $ 116,219 Other current assets 59,341 217,822 279,626 (277,989 ) 278,800 Current assets held for sale 189,952 — — — $ 189,952 Plant, equipment and timberlands, net 24,671 80,992 409,520 — 515,183 Investments in subsidiaries 829,895 653,128 — (1,483,023 ) — Other assets 82,201 — 140,529 — 222,730 Noncurrent assets held for sale 407,911 — — — 407,911 Total assets $ 1,595,263 $ 952,662 $ 943,882 $ (1,761,012 ) $ 1,730,795 Liabilities and Shareholders' Equity Current liabilities $ 289,967 $ 54,640 $ 167,738 $ (277,989 ) $ 234,356 Current liabilities held for sale 112,820 — — — 112,820 Long-term debt 368,496 51,000 50,602 — 470,098 Deferred income taxes 14,081 16,814 52,676 — 83,571 Other long-term liabilities 59,598 313 19,738 — 79,649 Long-term liabilities held for sale 41,373 — — — 41,373 Total liabilities 886,335 122,767 290,754 (277,989 ) 1,021,867 Shareholders’ equity 708,928 829,895 653,128 (1,483,023 ) 708,928 Total liabilities and shareholders’ equity $ 1,595,263 $ 952,662 $ 943,882 $ (1,761,012 ) $ 1,730,795
Condensed Consolidating Statement of Cash Flows	Condensed Consolidating Statement of Cash Flows for the nine months ended September 30, 2018 In thousands Parent Company Guarantors Non Guarantors Adjustments/ Eliminations Consolidated Net cash provided (used) by Operating activities $ (40,899 ) $ 3,350 $ 41,337 $ (20,000 ) $ (16,212 ) Investing activities Expenditures for purchases of plant, equipment and timberlands (3,655 ) (13,834 ) (14,666 ) — (32,155 ) Proceeds from disposals of plant, equipment and timberlands, net 17 2,046 10 — 2,073 Advances of intercompany loans — (5,285 ) — 5,285 — Intercompany capital contributed — (315 ) — 315 — Intercompany capital returned — 20,000 — (20,000 ) — Other (68 ) — — — (68 ) Total investing activities (3,706 ) 2,612 (14,656 ) (14,400 ) (30,150 ) Financing activities Net borrowings of long-term debt 38,007 17,000 111,381 — 166,388 Payment of dividends to shareholders (17,064 ) — — — (17,064 ) Borrowings of intercompany loans 5,285 — — (5,285 ) — Intercompany capital received — — 315 (315 ) — Intercompany capital returned — — (20,000 ) 20,000 — Payment of intercompany dividend — (20,000 ) — 20,000 — Payments related to share-based compensation awards and other (1,008 ) — — — (1,008 ) Total financing activities 25,220 (3,000 ) 91,696 34,400 148,316 Effect of exchange rate on cash — — (3,931 ) — (3,931 ) Net increase (decrease) in cash (19,385 ) 2,962 114,446 — 98,023 Change in cash from discontinued operations 19,828 — — — 19,828 Cash at the beginning of period 1,292 720 114,207 — 116,219 Cash at the end of period $ 1,735 $ 3,682 $ 228,653 $ 0 $ 234,070 Condensed Consolidating Statement of Cash Flows for the nine months ended September 30, 2017 In thousands Parent Company Guarantors Non Guarantors Adjustments/ Eliminations Consolidated Net cash provided (used) by Operating activities $ (49,361 ) $ (3,241 ) $ 73,103 $ - $ 20,501 Investing activities Expenditures for purchases of plant, equipment and timberlands (11,221 ) (32,847 ) (13,910 ) — (57,978 ) Proceeds from disposals of plant, equipment and timberlands, net — 209 — — 209 Repayments from intercompany loans — 12,000 — (12,000 ) — Advances of intercompany loans — (13,500 ) — 13,500 — Intercompany capital contributed (2,000 ) (400 ) — 2,400 — Intercompany capital returned — — — — — Other (100 ) — — — (100 ) Total investing activities (13,321 ) (34,538 ) (13,910 ) 3,900 (57,869 ) Financing activities Net borrowings (repayments) of long-term debt 73,298 35,000 (18,711 ) — 89,587 Payment of dividends to shareholders (16,805 ) — — — (16,805 ) Repayments of intercompany loans — — (12,000 ) 12,000 — Borrowings of intercompany loans 13,500 — — (13,500 ) — Intercompany capital received — 2,000 400 (2,400 ) — Payments related to share-based compensation awards and other (128 ) — — — (128 ) Total financing activities 69,865 37,000 (30,311 ) (3,900 ) 72,654 Effect of exchange rate on cash — — 5,448 — 5,448 Net increase (decrease) in cash 7,183 (779 ) 34,330 — 40,734 Change in cash from discontinued operations (11,891 ) — — — (11,891 ) Cash at the beginning of period 5,082 1,461 48,901 — 55,444 Cash at the end of period $ 374 $ 682 $ 83,231 $ 0 $ 84,287

Accounting Policies - Additiona

Accounting Policies - Additional Information (Detail) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Federal income tax rate	21.00%	35.00%
Reclassification of net deferred tax benefits from AOCI to retained earnings		$ 22,298
Accounting Standards Update 2018-02 [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Federal income tax rate	21.00%	35.00%
Reclassification of net deferred tax benefits from AOCI to retained earnings	$ 22,300

Acquisition - Additional Inform

Acquisition - Additional Information (Details) - G P Business [Member] $ in Millions	Oct. 01, 2018USD ($)Employeet	Dec. 31, 2017USD ($)
Business Acquisition [Line Items]
Annual sales of acquiree		$ 99
Subsequent Event [Member]
Business Acquisition [Line Items]
Business acquisition purchase price	$ 186
Business acquisition, date of completion	Oct. 1, 2018
Annual production capacity | t	32,000
Number of employees at manufacturing facility | Employee	220

Revenue - Summary of Disaggrega

Revenue - Summary of Disaggregated Information Pertaining to Net Sales (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Disaggregation Of Revenue [Line Items]
Net sales	$ 209,855	$ 210,120	$ 636,806	$ 591,035
Product [Member]
Disaggregation Of Revenue [Line Items]
Net sales	209,855	210,120	636,806	591,035
Composite Fibers [Member]
Disaggregation Of Revenue [Line Items]
Net sales	139,176	142,349	423,707	400,590
Composite Fibers [Member] | Europe, Middle East and Africa [Member]
Disaggregation Of Revenue [Line Items]
Net sales	87,870	91,944	274,442	259,532
Composite Fibers [Member] | Asia Pacific [Member]
Disaggregation Of Revenue [Line Items]
Net sales	21,101	24,207	66,020	64,324
Composite Fibers [Member] | Americas [Member]
Disaggregation Of Revenue [Line Items]
Net sales	30,205	26,198	83,245	76,734
Composite Fibers [Member] | Food & Beverage [Member]
Disaggregation Of Revenue [Line Items]
Net sales	68,534	66,539	209,117	194,575
Composite Fibers [Member] | Wallcovering [Member]
Disaggregation Of Revenue [Line Items]
Net sales	26,135	28,365	82,056	76,993
Composite Fibers [Member] | Technical Specialties [Member]
Disaggregation Of Revenue [Line Items]
Net sales	20,615	21,309	63,182	56,692
Composite Fibers [Member] | Composite Laminates [Member]
Disaggregation Of Revenue [Line Items]
Net sales	10,544	10,558	28,902	28,652
Composite Fibers [Member] | Metallized [Member]
Disaggregation Of Revenue [Line Items]
Net sales	13,348	15,578	40,450	43,678
Advanced Airlaid Materials [Member]
Disaggregation Of Revenue [Line Items]
Net sales	70,679	67,771	213,099	190,445
Advanced Airlaid Materials [Member] | Europe, Middle East and Africa [Member]
Disaggregation Of Revenue [Line Items]
Net sales	35,283	36,025	107,416	98,158
Advanced Airlaid Materials [Member] | Asia Pacific [Member]
Disaggregation Of Revenue [Line Items]
Net sales	497	449	1,656	1,058
Advanced Airlaid Materials [Member] | Americas [Member]
Disaggregation Of Revenue [Line Items]
Net sales	34,899	31,297	104,027	91,229
Advanced Airlaid Materials [Member] | Feminine Hygiene [Member]
Disaggregation Of Revenue [Line Items]
Net sales	46,054	46,623	141,464	133,550
Advanced Airlaid Materials [Member] | Specialty Wipes [Member]
Disaggregation Of Revenue [Line Items]
Net sales	11,104	8,899	29,366	21,941
Advanced Airlaid Materials [Member] | Adult Incontinence [Member]
Disaggregation Of Revenue [Line Items]
Net sales	5,036	3,761	14,658	10,625
Advanced Airlaid Materials [Member] | Home Care [Member]
Disaggregation Of Revenue [Line Items]
Net sales	4,009	3,715	11,911	9,642
Advanced Airlaid Materials [Member] | Other [Member]
Disaggregation Of Revenue [Line Items]
Net sales	$ 4,476	$ 4,773	$ 15,700	$ 14,687

Discontinued Operations - Addit

Discontinued Operations - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	Oct. 31, 2018	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Income (loss)		$ (95,126)	$ 7,060	$ (100,353)	$ 8,907
Pension Benefits [Member] | Curtailment Recognition [Member] | Reclassifications Out of Accumulated Other Comprehensive Income [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Income (loss)		1,805		1,805
Specialty Papers [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Selling price of business unit	$ 360,000
Cash proceeds from divestiture of business	323,000
Retiree healthcare liabilities	38,000
Pension liabilities assumed	220,000
Related assets transferred from existing pension plan	$ 270,000
Income (loss)		$ (95,126)	$ 7,060	$ (100,353)	$ 8,907

Discontinued Operations - Summa

Discontinued Operations - Summary of Discontinued Operations included in Condensed Consolidated Statements of Income (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Non-operating income (expense)
Income (loss) before income taxes	$ (114,656)	$ 9,661	$ (128,714)	$ 14,422
Income tax provision (benefit)	(19,530)	2,601	(28,361)	5,515
Income (loss) from discontinued operations	(95,126)	7,060	(100,353)	8,907
Specialty Papers [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Total revenues	202,132	204,442	593,974	603,692
Costs of products sold	181,628	188,076	572,820	569,840
Gross profit	20,504	16,366	21,154	33,852
Selling, general and administrative expenses	6,058	5,997	18,566	17,971
(Gains) losses on dispositions of plant, equipment and timberlands, net	3	70	(440)	118
Operating income	14,443	10,299	3,028	15,763
Non-operating income (expense)
Interest expense	(2,281)	(1,221)	(6,017)	(3,005)
Other, net	(1,174)	583	(81)	1,664
Impairment charge	(125,644)		(125,644)
Income (loss) before income taxes	(114,656)	9,661	(128,714)	14,422
Income tax provision (benefit)	(19,530)	2,601	(28,361)	5,515
Income (loss) from discontinued operations	(95,126)	7,060	(100,353)	8,907
Specialty Papers [Member] | Product [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Total revenues	201,288	203,206	590,757	600,346
Specialty Papers [Member] | Energy and Related Sales Net [Member]
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Total revenues	$ 844	$ 1,236	$ 3,217	$ 3,346

Discontinued Operations - Sum_2

Discontinued Operations - Summary of Carrying Amounts of Major Asset and Liabilities Classified as Held for Sale in Condensed Consolidated Balance Sheets (Detail) - Specialty Papers [Member] - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Assets
Accounts receivable, net	$ 73,608	$ 63,567
Inventories	105,311	115,858
Prepaid expenses and other current assets	9,403	10,527
Current assets held for sale	188,322	189,952
Plant, equipment and timberlands, net	210,891	350,560
Other assets	60,840	57,351
Noncurrent assets held for sale	271,731	407,911
Liabilities
Accounts payable	76,257	77,266
Other current liabilities	33,906	35,554
Current liabilities held for sale	110,163	112,820
Long-term liabilities held for sale	$ 40,480	$ 41,373

Discontinued Operations - Sum_3

Discontinued Operations - Summary of Cash Flows from Discontinued Operations Included in Condensed Consolidated Statements of Cash Flows (Detail) - Specialty Papers [Member] - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Net cash provided by operating activities	$ 33,721	$ 32,295
Net cash used in investing activities	(14,018)	(44,186)
Net cash provided by financing activities	125
Change in cash and cash equivalents from discontinued operations	$ 19,828	$ (11,891)

Gains on Dispositions of Plan_3

Gains on Dispositions of Plant, Equipment and Timberlands (Summary for Sale of Timberlands and Other Assets) (Detail) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018USD ($)a	Sep. 30, 2017USD ($)a	Sep. 30, 2018USD ($)a	Sep. 30, 2017USD ($)a
Property, Plant and Equipment [Line Items]
Proceeds			$ 2,073	$ 209
Gain (loss)	$ 249	$ 93	$ 1,939	$ 168
Timberlands [Member]
Property, Plant and Equipment [Line Items]
Acres | a	1,103	332	1,103	332
Proceeds			$ 2,046	$ 209
Gain (loss)			1,929	188
Other [Member]
Property, Plant and Equipment [Line Items]
Proceeds			27
Gain (loss)			$ 10	$ (20)

Earnings Per Share - Details of

Earnings Per Share - Details of Basic and Diluted Earnings Per Share (EPS) from Continuing Operations (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Earnings Per Share [Abstract]
Income (loss) from continuing operations	$ (705)	$ 5,045	$ 2,841	$ 9,087
Weighted average common shares outstanding used in basic EPS	43,792	43,617	43,754	43,601
Effect of dilutive SOSARs, PSAs and RSUs		565		809
Weighted average common shares outstanding and common share equivalents used in diluted EPS	43,792	44,182	43,754	44,410
Earnings (loss) per share from continuing operations
Basic	$ (0.02)	$ 0.12	$ 0.06	$ 0.21
Diluted	$ (0.02)	$ 0.11	$ 0.06	$ 0.21

Earnings Per Share - Summary of

Earnings Per Share - Summary of Numerator Used to Compute Per Share Income Or Loss From Discontinued Operations (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Income Loss From Discontinued Operations Net Of Tax [Abstract]
Income (loss)	$ (95,126)	$ 7,060	$ (100,353)	$ 8,907

Earnings Per Share - Number of

Earnings Per Share - Number of Potential Common Shares that have been Excluded from Computation of Diluted Earnings Per Share for Indicated Period Due to Their Anti-Dilutive Nature (Detail) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Earnings Per Share [Abstract]
Potential common shares	2,393	967	2,393	593

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income - Schedule of Changes in Accumulated Other Comprehensive Income (Losses) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	$ (174,606)	$ (171,081)	$ (140,675)	$ (204,606)
Amount reclassified for adoption of ASU No. 2018-02			(22,298)
Balance as adjusted at January 1, 2018			(162,973)
Other comprehensive income (loss) before reclassifications (net of tax)	15,090	15,026	(5,235)	45,261
Amounts reclassified from accumulated other comprehensive income (net of tax)	4,881	2,304	13,573	5,594
Net current period other comprehensive income (loss)	19,971	17,330	8,338	50,855
Ending Balance	(154,635)	(153,751)	(154,635)	(153,751)
Currency Translation Adjustments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(62,315)	(66,879)	(41,839)	(100,448)
Balance as adjusted at January 1, 2018			(41,839)
Other comprehensive income (loss) before reclassifications (net of tax)	(3,217)	16,559	(23,693)	50,128
Net current period other comprehensive income (loss)	(3,217)	16,559	(23,693)	50,128
Ending Balance	(65,532)	(50,320)	(65,532)	(50,320)
Unrealized Gain (Loss) on Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(1,345)	(3,097)	(4,092)	1,500
Balance as adjusted at January 1, 2018			(4,092)
Other comprehensive income (loss) before reclassifications (net of tax)	627	(1,533)	778	(4,868)
Amounts reclassified from accumulated other comprehensive income (net of tax)	989	19	3,585	(1,243)
Net current period other comprehensive income (loss)	1,616	(1,514)	4,363	(6,111)
Ending Balance	271	(4,611)	271	(4,611)
Change in Pensions [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(115,167)	(105,824)	(98,295)	(110,656)
Amount reclassified for adoption of ASU No. 2018-02			(23,297)
Balance as adjusted at January 1, 2018			(121,592)
Other comprehensive income (loss) before reclassifications (net of tax)	12,981		12,981
Amounts reclassified from accumulated other comprehensive income (net of tax)	4,053	2,424	10,478	7,256
Net current period other comprehensive income (loss)	17,034	2,424	23,459	7,256
Ending Balance	(98,133)	(103,400)	(98,133)	(103,400)
Change in Other Postretirement Defined Benefit Plans [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	4,221	4,719	3,551	4,998
Amount reclassified for adoption of ASU No. 2018-02			999
Balance as adjusted at January 1, 2018			4,550
Other comprehensive income (loss) before reclassifications (net of tax)	4,699		4,699	1
Amounts reclassified from accumulated other comprehensive income (net of tax)	(161)	(139)	(490)	(419)
Net current period other comprehensive income (loss)	4,538	(139)	4,209	(418)
Ending Balance	$ 8,759	$ 4,580	$ 8,759	$ 4,580

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive Income - Schedule of Amounts Reclassified from Accumulated Other Comprehensive Income and Into the Condensed Consolidated Statements of Income (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Defined Benefit Plan Disclosure [Line Items]
Costs of products sold	$ (179,983)	$ (172,745)	$ (537,073)	$ (485,783)
Other, net	(2,253)	387	(1,131)	558
Income tax provision (benefit)	3,462	1,680	7,037	4,429
Net income (loss)	(95,831)	12,105	(97,512)	17,994
Income (loss)	(95,126)	7,060	(100,353)	8,907
Reclassifications Out of Accumulated Other Comprehensive Income [Member]
Defined Benefit Plan Disclosure [Line Items]
Net income (loss)	4,881	2,304	13,573	5,594
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Other, net	6,041	3,786	14,515	11,331
Income tax provision (benefit)	(1,988)	(1,362)	(4,037)	(4,075)
Net income (loss)	4,053	2,424	10,478	7,256
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Pension Benefits [Member] | Prior Service Costs [Member]
Defined Benefit Plan Disclosure [Line Items]
Other, net	5	7	16	17
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Pension Benefits [Member] | Actuarial Losses [Member]
Defined Benefit Plan Disclosure [Line Items]
Other, net	2,060	1,777	6,179	5,332
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Pension Benefits [Member] | Discontinued Operations Amortization of Deferred Benefit Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Income (loss)	2,171	2,002	6,515	5,982
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Pension Benefits [Member] | Curtailment Recognition [Member]
Defined Benefit Plan Disclosure [Line Items]
Income (loss)	1,805		1,805
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Other Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Other, net	(217)	(139)	(653)	(419)
Income tax provision (benefit)	56		163
Net income (loss)	(161)	(139)	(490)	(419)
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Other Pension Plan | Discontinued Operations Amortization of Deferred Benefit Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Income (loss)	(201)	(135)	(604)	(409)
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Other Pension Plan | Actuarial Gains [Member]
Defined Benefit Plan Disclosure [Line Items]
Other, net	(16)	(4)	(49)	(10)
Reclassifications Out of Accumulated Other Comprehensive Income [Member] | Cash Flow Hedges [Member] | Accumulated Net (Gain) Loss from Cash Flow Hedges Attributable to Parent [Member]
Defined Benefit Plan Disclosure [Line Items]
Costs of products sold	1,344	29	4,939	(1,687)
Income tax provision (benefit)	(355)	(10)	(1,354)	444
Net income (loss)	$ 989	$ 19	$ 3,585	$ (1,243)

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
Income Tax Contingency [Line Items]
Federal income tax rate	21.00%	35.00%
Increase in provisional amount of repatriation transition tax	$ 0.4
Increase in effective tax rate due to GILTI provisions	11.00%
Valuation allowance	$ 5.7
Gross unrecognized tax benefits	28.7	$ 26.9
Unrecognized tax benefits that would impact effective tax rate	$ 18.6
Maximum [Member]
Income Tax Contingency [Line Items]
Percentage of deduction in GILTI Income	50.00%
Gross unrecognized tax benefits balance may decrease within the next twelve months	$ 6.9
Minimum [Member]
Income Tax Contingency [Line Items]
Gross unrecognized tax benefits balance may decrease within the next twelve months	$ 0

Income Taxes - Summary of Tax Y

Income Taxes - Summary of Tax Years that Remain Subject to Examination by Major Jurisdiction (Detail)	9 Months Ended
	Sep. 30, 2018
United States - State [Member] | United States [Member]
Income Tax Examination [Line Items]
Examination in progress	2,014
Foreign Tax Authority [Member] | France [Member]
Income Tax Examination [Line Items]
Examination in progress	2,012
Foreign Tax Authority [Member] | Philippines [Member]
Income Tax Examination [Line Items]
Examination in progress	2,016
Minimum [Member] | United States - Federal [Member] | United States [Member]
Income Tax Examination [Line Items]
Examinations not yet initiated	2,015
Minimum [Member] | United States - State [Member] | United States [Member]
Income Tax Examination [Line Items]
Examinations not yet initiated	2,013
Minimum [Member] | Foreign Tax Authority [Member] | Canada [Member]
Income Tax Examination [Line Items]
Examinations not yet initiated	2,010
Examination in progress	2,014
Minimum [Member] | Foreign Tax Authority [Member] | Germany [Member]
Income Tax Examination [Line Items]
Examinations not yet initiated	2,016
Examination in progress	2,011
Minimum [Member] | Foreign Tax Authority [Member] | France [Member]
Income Tax Examination [Line Items]
Examination in progress	2,015
Minimum [Member] | Foreign Tax Authority [Member] | United Kingdom [Member]
Income Tax Examination [Line Items]
Examinations not yet initiated	2,016
Minimum [Member] | Foreign Tax Authority [Member] | Philippines [Member]
Income Tax Examination [Line Items]
Examinations not yet initiated	2,015
Maximum [Member] | United States - Federal [Member] | United States [Member]
Income Tax Examination [Line Items]
Examinations not yet initiated	2,017
Maximum [Member] | United States - State [Member] | United States [Member]
Income Tax Examination [Line Items]
Examinations not yet initiated	2,017
Maximum [Member] | Foreign Tax Authority [Member] | Canada [Member]
Income Tax Examination [Line Items]
Examinations not yet initiated	2,013
Examination in progress	2,017
Maximum [Member] | Foreign Tax Authority [Member] | Germany [Member]
Income Tax Examination [Line Items]
Examinations not yet initiated	2,017
Examination in progress	2,015
Maximum [Member] | Foreign Tax Authority [Member] | France [Member]
Income Tax Examination [Line Items]
Examination in progress	2,017
Maximum [Member] | Foreign Tax Authority [Member] | United Kingdom [Member]
Income Tax Examination [Line Items]
Examinations not yet initiated	2,017
Maximum [Member] | Foreign Tax Authority [Member] | Philippines [Member]
Income Tax Examination [Line Items]
Examinations not yet initiated	2,017

Income Taxes - Summary of Infor

Income Taxes - Summary of Information Related to Interest and Penalties on Uncertain Tax Positions (Detail) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Interest expense (income)	$ 0.3	$ 0.3
Accrued interest payable	$ 1.1		$ 0.8

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Detail) - shares	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Restricted Stock Units (RSU) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
The vesting graded scale	The RSUs vest on the passage of time, generally on a graded scale over a three, four, and five-year period, or in certain instances the RSUs were issued with five year cliff vesting.
Performance Share Awards (PSAs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cumulative performance targets	2 years
Additional service period	1 year
Grants under performance share awards	184,121	163,274
Stock Only Stock Appreciation Rights (SOSARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of stock	3 years
Vesting term	10 years
Share-based payment award, shares issued in period	0	0

Stock-Based Compensation - Summ

Stock-Based Compensation - Summary of RSU and PSA Activity (Detail) - Restricted Stock Units (RSU) and Performance Share Awards (PSAs) [Member] - shares	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Beginning Balance	929,386	679,038
Granted	398,005	370,458
Forfeited	(73,673)	(93,045)
Shares delivered	(151,371)	(26,352)
Ending Balance	1,102,347	930,099

Stock-Based Compensation - Comp

Stock-Based Compensation - Compensation Expense for Periods Included in Continuing Operations (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Restricted Stock Units (RSU) and Performance Share Awards (PSAs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	$ 1,146	$ 1,494	$ 4,283	$ 3,293
Stock Only Stock Appreciation Rights (SOSARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	$ 67	$ 233	$ 311	$ 1,038

Stock-Based Compensation - Sche

Stock-Based Compensation - Schedule of Information Related to Outstanding SOSARS (Detail) - Stock Only Stock Appreciation Rights (SOSARs) [Member] - $ / shares	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Beginning Balance, Outstanding	2,561,846	2,736,616
Exercised	(158,545)	(33,050)
Canceled / forfeited	(51,285)	(17,630)
Ending Balance, Outstanding	2,352,016	2,685,936
Beginning Balance, Weighted Average Exercise Price, Outstanding	$ 17.87	$ 17.64
Weighted Average Exercise Price, Exercised	13.31	14.65
Weighted Average Exercise Price, Canceled / forfeited	22.35	18.46
Ending Balance, Weighted Average Exercise Price, Outstanding	$ 18.08	$ 17.67

Retirement Plans and Other Po_3

Retirement Plans and Other Post-Retirement Benefits - Schedule of Net Periodic Costs of Pension and Post Retirement Medical Benefit Plans Included in Continuing Operations (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 595	$ 487	$ 1,784	$ 1,462
Interest cost	3,241	3,413	9,723	10,240
Expected return on plan assets	(5,531)	(5,514)	(16,592)	(16,542)
Amortization of prior service cost/(credit)	5	7	16	17
Amortization of unrecognized/actuarial loss (gain)	2,060	1,777	6,179	5,332
Total net periodic benefit cost	370	170	1,110	509
Other Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	16	16	46	49
Interest cost	80	91	239	275
Amortization of unrecognized/actuarial loss (gain)	(16)	(4)	(49)	(10)
Total net periodic benefit cost	$ 80	$ 103	$ 236	$ 314

Inventories - Inventories, Net

Inventories - Inventories, Net of Reserves (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Inventory Disclosure [Abstract]
Raw materials	$ 45,595	$ 39,797
In-process and finished	90,113	65,277
Supplies	35,278	31,127
Total	$ 170,986	$ 136,201

Capitalized Interest - Summary

Capitalized Interest - Summary of Interest Incurred, Capitalized and Expensed Included in Continuing Operations (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Interest Expense [Abstract]
Interest cost incurred	$ 3,965	$ 3,856	$ 11,633	$ 11,219
Interest capitalized		532	396	1,194
Interest expense	$ 3,965	$ 3,324	$ 11,237	$ 10,025

Long-Term Debt - Summary of Lon

Long-Term Debt - Summary of Long-Term Debt (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Total long-term debt	$ 647,748	$ 483,330
Less current portion	(10,904)	(11,298)
Unamortized deferred issuance costs	(1,438)	(1,934)
Long-term debt, net of current portion	635,406	470,098
Revolving Credit Facility, Due Mar. 2020 [Member]
Debt Instrument [Line Items]
Total long-term debt	345,962	171,200
5.375% Notes, Due Oct. 2020 [Member]
Debt Instrument [Line Items]
Total long-term debt	250,000	250,000
Long-term debt, net of current portion	250,000	250,000
2.40% Term Loan, Due Jun. 2022 [Member]
Debt Instrument [Line Items]
Total long-term debt	6,201	7,710
2.05% Term Loan, Due Mar. 2023 [Member]
Debt Instrument [Line Items]
Total long-term debt	27,802	33,607
1.30% Term Loan, Due Jun. 2023 [Member]
Debt Instrument [Line Items]
Total long-term debt	7,855	9,423
1.55% Term Loan, Due Sep. 2025 [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 9,928	$ 11,390

Long-Term Debt - Summary of L_2

Long-Term Debt - Summary of Long-Term Debt (Parenthetical) (Detail)	9 Months Ended
	Sep. 30, 2018	Dec. 31, 2017
5.375% Notes, Due Oct. 2020 [Member]
Debt Instrument [Line Items]
Long-term debt, maturity date	Oct. 31, 2020
Interest rate on debt	5.375%	5.375%
2.40% Term Loan, Due Jun. 2022 [Member]
Debt Instrument [Line Items]
Long-term debt, maturity date	Jun. 30, 2022
Interest rate on debt	2.40%	2.40%
2.05% Term Loan, Due Mar. 2023 [Member]
Debt Instrument [Line Items]
Long-term debt, maturity date	Mar. 31, 2023
Interest rate on debt	2.05%	2.05%
1.30% Term Loan, Due Jun. 2023 [Member]
Debt Instrument [Line Items]
Long-term debt, maturity date	Jun. 30, 2023
Interest rate on debt	1.30%	1.30%
1.55% Term Loan, Due Sep. 2025 [Member]
Debt Instrument [Line Items]
Long-term debt, maturity date	Sep. 30, 2025
Interest rate on debt	1.55%	1.55%
Revolving Credit Facility, Due Mar. 2020 [Member]
Debt Instrument [Line Items]
Long-term debt, maturity date	Mar. 31, 2020

Long-Term Debt - Additional Inf

Long-Term Debt - Additional Information (Detail)	Sep. 07, 2018	Feb. 01, 2017	Sep. 30, 2018USD ($)	Dec. 31, 2017USD ($)	Mar. 12, 2015USD ($)	Oct. 03, 2012USD ($)
Debt Instrument [Line Items]
Debt instrument covenant compliance leverage ratio, threshold			4
Debt instrument covenant compliance leverage ratio, actual			2.9
5.375% Notes [Member]
Debt Instrument [Line Items]
Long-term debt, maturity date			Oct. 15, 2020
Aggregate principal amount						$ 250,000,000
Interest rate on debt			5.375%			5.375%
Frequency of interest payable			Semiannually
Debt instrument redemption			The 5.375% Notes are redeemable, in whole or in part, at any time on or after October 15, 2016 at the redemption prices specified in the applicable Indenture.
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity					$ 400,000,000
Long-term debt, maturity date			Mar. 12, 2020
Debt instrument covenant compliance leverage ratio, threshold	4	4
Federal fund rate spread			1.00%
Revolving Credit Facility [Member] | Minimum [Member]
Debt Instrument [Line Items]
Federal fund rate spread			0.125%
Revolving Credit Facility [Member] | Maximum [Member]
Debt Instrument [Line Items]
Federal fund rate spread			1.00%
Revolving Credit Facility [Member] | Federal Funds Rate [Member]
Debt Instrument [Line Items]
Federal fund rate spread			0.50%
Revolving Credit Facility [Member] | Daily Euro Rate [Member] | Minimum [Member]
Debt Instrument [Line Items]
Federal fund rate spread			1.125%
Revolving Credit Facility [Member] | Daily Euro Rate [Member] | Maximum [Member]
Debt Instrument [Line Items]
Federal fund rate spread			2.00%
Letters of Credit [Member]
Debt Instrument [Line Items]
Letters of credit issued			$ 5,200,000	$ 5,200,000
Letters of credit outstanding			$ 0

Long-Term Debt - Summary of Deb

Long-Term Debt - Summary of Debts Borrowed by Subsidiary (Detail) - IKB Deutsche Industriebank AG Borrowing Agreements [Member] - Glatfelter Gernsbach GmbH and Co KG [Member] - IKB Deutsche Industriebank AG Member - EUR (€) € in Thousands	May 04, 2016	Apr. 26, 2016	Oct. 10, 2015	Sep. 04, 2014	Apr. 11, 2013
Debt Instrument [Line Items]
Original Principal	€ 7,195	€ 10,000	€ 2,608	€ 10,000	€ 42,700
Interest Rate	1.55%	1.30%	1.55%	2.40%	2.05%
Maturity	Sep. 30, 2025	Jun. 30, 2023	Sep. 30, 2025	Jun. 30, 2022	Mar. 31, 2023

Fair Value of Financial Instr_3

Fair Value of Financial Instruments - Carrying Value and Fair Value of Long-Term Debt (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying Value	$ 647,748	$ 483,330
Fair Value	648,832	487,724
Revolving Credit Facility Due Mar. 2020 And Nov. 2016 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying Value	345,962	171,200
Fair Value	345,962	171,200
5.375% Notes, Due Oct. 2020 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying Value	250,000	250,000
Fair Value	250,633	253,823
2.40% Term Loan, Due Jun. 2022 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying Value	6,201	7,710
Fair Value	6,332	7,889
2.05% Term Loan, Due Mar. 2023 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying Value	27,802	33,607
Fair Value	28,206	34,122
1.30% Term Loan, Due Jun. 2023 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying Value	7,855	9,423
Fair Value	7,825	9,370
1.55% Term Loan, Due Sep. 2025 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Carrying Value	9,928	11,390
Fair Value	$ 9,874	$ 11,320

Fair Value of Financial Instr_4

Fair Value of Financial Instruments - Carrying Value and Fair Value of Long-Term Debt (Parenthetical) (Detail)	Sep. 30, 2018	Dec. 31, 2017
2.40% Term Loan, Due Jun. 2022 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Percent on aggregate principal amount of outstanding	2.40%	2.40%
2.05% Term Loan, Due Mar. 2023 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Percent on aggregate principal amount of outstanding	2.05%	2.05%
1.30% Term Loan, Due Jun. 2023 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Percent on aggregate principal amount of outstanding	1.30%	1.30%
1.55% Term Loan, Due Sep. 2025 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Percent on aggregate principal amount of outstanding	1.55%	1.55%

Fair Value of Financial Instr_5

Fair Value of Financial Instruments - Additional Information (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Amount of fixed rate debt	$ 635,406	$ 470,098
5.375% Notes, Due Oct. 2020 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Amount of fixed rate debt	$ 250,000	$ 250,000
Interest rate on debt	5.375%	5.375%

Financial Derivatives and Hed_3

Financial Derivatives and Hedging Activities - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2018
Maximum [Member] | Fair Value, Measurements [Member]
Derivative [Line Items]
Accumulated other comprehensive income realization period	18 months
Minimum [Member] | Fair Value, Measurements [Member]
Derivative [Line Items]
Accumulated other comprehensive income realization period	12 months
Designated as Hedging [Member] | Cash Flow Hedges [Member] | Maximum [Member]
Derivative [Line Items]
Maturities of foreign currency derivative contracts	18 months
Designated as Hedging [Member] | Cash Flow Hedges [Member] | Minimum [Member]
Derivative [Line Items]
Maturities of foreign currency derivative contracts	1 month
Not Designated as Hedging [Member]
Derivative [Line Items]
Maturities of foreign currency derivative contracts	1 month

Financial Derivatives and Hed_4

Financial Derivatives and Hedging Activities - Outstanding Derivatives Used to Hedge Foreign Exchange Risks (Detail)	Sep. 30, 2018USD ($)	Sep. 30, 2018EUR (€)	Sep. 30, 2018PHP (₱)	Sep. 30, 2018CAD ($)	Sep. 30, 2018GBP (£)	Dec. 31, 2017USD ($)	Dec. 31, 2017EUR (€)	Dec. 31, 2017PHP (₱)	Dec. 31, 2017CAD ($)	Dec. 31, 2017GBP (£)
Cash Flow Hedges [Member] | Philippine Peso / British Pound [Member] | Designated as Hedging [Member] | Sell Notional [Member]
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative notional amount | ₱								₱ 19,047,000
Cash Flow Hedges [Member] | Euro / British Pound [Member] | Designated as Hedging [Member] | Sell Notional [Member]
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative notional amount | €		€ 16,130,000					€ 13,586,000
Cash Flow Hedges [Member] | Euro / U.S. Dollar [Member] | Designated as Hedging [Member] | Sell Notional [Member]
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative notional amount | €							1,048,000
Cash Flow Hedges [Member] | Euro / U.S. Dollar [Member] | Designated as Hedging [Member] | Buy Notional [Member]
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative notional amount | $	$ 74,569,000					$ 60,519,000
Cash Flow Hedges [Member] | Euro / Philippine Peso [Member] | Designated as Hedging [Member] | Buy Notional [Member]
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative notional amount | ₱			₱ 1,147,101,000					890,096,000
Cash Flow Hedges [Member] | British Pound / Philippine Peso [Member] | Designated as Hedging [Member] | Buy Notional [Member]
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative notional amount | ₱			₱ 1,026,551,000					₱ 797,496,000
Cash Flow Hedges [Member] | Canadian Dollar / U.S. Dollar | Designated as Hedging [Member] | Sell Notional [Member]
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative notional amount | $	168,000
Cash Flow Hedges [Member] | U.S. Dollar / Canadian Dollar [Member] | Designated as Hedging [Member] | Buy Notional [Member]
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative notional amount | $				$ 31,394,000					$ 32,265,000
Cash Flow Hedges [Member] | U.S Dollar / Euro [Member] | Designated as Hedging [Member] | Sell Notional [Member]
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative notional amount | €		414,000					946,000
Cash Flow Hedges [Member] | U.S Dollar / Euro [Member] | Designated as Hedging [Member] | Buy Notional [Member]
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative notional amount | €							4,253,000
Cash Flow Hedges [Member] | British Pound / Euro [Member] | Designated as Hedging [Member] | Buy Notional [Member]
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative notional amount | €							335,000
Foreign Currency Hedges [Member] | Euro / U.S. Dollar [Member] | Not Designated as Hedging [Member] | Buy Notional [Member]
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative notional amount | $	11,000,000					4,500,000
Foreign Currency Hedges [Member] | Canadian Dollar / U.S. Dollar | Not Designated as Hedging [Member] | Sell Notional [Member]
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative notional amount | $				$ 2,500,000
Foreign Currency Hedges [Member] | British Pound / Euro [Member] | Not Designated as Hedging [Member] | Sell Notional [Member]
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative notional amount | £					£ 1,000,000					£ 1,000,000
Foreign Currency Hedges [Member] | British Pound / Euro [Member] | Not Designated as Hedging [Member] | Buy Notional [Member]
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative notional amount | €		€ 10,000,000					€ 13,000,000
Foreign Currency Hedges [Member] | U.S. Dollar / British Pound [Member] | Not Designated as Hedging [Member] | Sell Notional [Member]
Derivative Instruments And Hedging Activities Disclosures [Line Items]
Derivative notional amount | $	$ 22,500,000					$ 17,500,000

Financial Derivatives and Hed_5

Financial Derivatives and Hedging Activities - Fair Values of Derivative Instruments (Detail) - Forward Foreign Currency Exchange Contracts [Member] - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Designated as Hedging [Member] | Prepaid Expenses and Other Current Assets [Member]
Derivatives Fair Value [Line Items]
Derivative asset, fair value	$ 1,489	$ 1,066
Designated as Hedging [Member] | Other Current Liabilities [Member]
Derivatives Fair Value [Line Items]
Derivative liability, fair value	522	4,787
Not Designated as Hedging [Member] | Prepaid Expenses and Other Current Assets [Member]
Derivatives Fair Value [Line Items]
Derivative asset, fair value	203	151
Not Designated as Hedging [Member] | Other Current Liabilities [Member]
Derivatives Fair Value [Line Items]
Derivative liability, fair value	$ 309	$ 43

Financial Derivatives and Hed_6

Financial Derivatives and Hedging Activities - Income or (Loss) from Derivative Instruments Recognized in Results of Operations (Detail) - Forward Foreign Currency Exchange Contracts [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Costs of Products Sold [Member] | Designated as Hedging [Member]
Derivative Instruments Gain Loss [Line Items]
Effective portion of derivative instruments, gain (loss)	$ (1,344)	$ (29)	$ (4,939)	$ 1,687
Other - Net [Member] | Designated as Hedging [Member]
Derivative Instruments Gain Loss [Line Items]
Ineffective portion of derivative instruments, gain (loss)	207	40	(5)	126
Other - Net [Member] | Not Designated as Hedging [Member]
Derivative Instruments Gain Loss [Line Items]
Derivative instruments, gain (loss)	$ (477)	$ 328	$ (1,078)	$ 719

Financial Derivatives and Hed_7

Financial Derivatives and Hedging Activities - Fair Value Amounts Recorded as Component of Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Balance at January 1,	$ (5,640)	$ 1,882
Deferred (losses) gains on cash flow hedges	1,142	(6,455)
Reclassified to earnings	4,939	(1,687)
Balance at September 30,	$ 441	$ (6,260)

Commitments, Contingencies an_3

Commitments, Contingencies and Legal Proceedings - Additional Information (Detail)	9 Months Ended	12 Months Ended
	Sep. 30, 2018USD ($)Operable_Unit	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Jul. 13, 2018USD ($)	Jun. 30, 2018USD ($)	Dec. 31, 2017USD ($)
Commitments Contingencies And Litigation [Line Items]
Number of operable units | Operable_Unit	5
Term of agreement wih third party for monitoring and maintenance in OU1-OU4a	30 years
Assumption of escrow	$ 4,746,000
Reserve for Environmental liabilities, current portion	26,000,000					$ 28,500,000
Other Long-Term Liabilities [Member]
Commitments Contingencies And Litigation [Line Items]
Reserve for Environmental liabilities, remaining portion	19,000,000
NCR/Appvion Consent Decree [Member]
Commitments Contingencies And Litigation [Line Items]
Contribution payment towards remedial action and natural resource damages	75,000,000
Anticipated cost to complete work for remaining site remedy	200,000,000
Expected payments for governments unreimbursed past costs which are under dispute	38,500,000
Unreimbursed recoverable cost					$ 0
Unspent settlement money					$ 500,000
NADAR [Member]
Commitments Contingencies And Litigation [Line Items]
Expected payments for governments unreimbursed past costs which are under dispute	105,000,000			$ 105,000,000
Unspent settlement money	60,000,000
Georgia Pacific [Member]
Commitments Contingencies And Litigation [Line Items]
Settlement payable amount	$ 9,500,000
Payment due date	2017-08
Maximum [Member]
Commitments Contingencies And Litigation [Line Items]
NCR costs and damages percentage	100.00%
Maximum [Member] | NCR/Appvion Consent Decree [Member]
Commitments Contingencies And Litigation [Line Items]
Estimated cost related to Fox River matter	$ 30,000,000
Minimum [Member] | December 2009 - Long Term Monitoring Plan [Member]
Commitments Contingencies And Litigation [Line Items]
Period over which cash expenditure to be incurred for monitoring activities	30 years
Minimum [Member] | GLT, GP and NCR [Member] | NCR/Appvion Consent Decree [Member]
Commitments Contingencies And Litigation [Line Items]
Contribution payment towards remedial action and natural resource damages	$ 1,000,000,000
OU2-5 [Member]
Commitments Contingencies And Litigation [Line Items]
Estimated future cost of cleanup work		$ 13,400,000	$ 13,400,000
Expected cleanup work continuation year	through 2,019
NCR costs and damages percentage	100.00%
OU2-5 [Member] | Whiting Litigation [Member]
Commitments Contingencies And Litigation [Line Items]
NCR costs and damages percentage	100.00%

Commitments, Contingencies an_4

Commitments, Contingencies and Legal Proceedings - Schedule of Reserves (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Environmental Remediation Obligations [Abstract]
Beginning balance	$ 43,144	$ 52,788
Payments	(3,014)	(9,581)
Assumption of WTM I escrow	4,746
Accretion	115
Ending balance	$ 44,991	$ 43,207

Segment Information - Schedule

Segment Information - Schedule of Financial and Other Information by Business Unit (Detail) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018USD ($)T	Sep. 30, 2017USD ($)T	Sep. 30, 2018USD ($)T	Sep. 30, 2017USD ($)T
Segment Reporting Information [Line Items]
Net sales	$ 209,855	$ 210,120	$ 636,806	$ 591,035
Type of Revenue [Extensible List]	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember
Cost of products sold	$ 179,983	$ 172,745	$ 537,073	$ 485,783
Type of Cost, Good or Service [Extensible List]	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember
Gross profit (loss)	$ 29,872	$ 37,375	$ 99,733	$ 105,252
SG&A	25,799	27,083	81,915	81,530
(Gains) losses on dispositions of plant, equipment and timberlands, net	(249)	(93)	(1,939)	(168)
Operating income (loss)	4,322	10,385	19,757	23,890
Non-operating expense	(1,565)	(3,660)	(9,879)	(10,374)
Income (loss) before income taxes	$ 2,757	$ 6,725	$ 9,878	$ 13,516
Supplementary Data
Net tons sold | T	61,500	63,500	182,800	182,400
Depreciation, depletion and amortization	$ 11,500	$ 10,200	$ 34,731	$ 30,276
Capital expenditures	6,200	21,000	32,200	58,000
Composite Fibers [Member]
Segment Reporting Information [Line Items]
Net sales	$ 139,176	$ 142,349	$ 423,707	$ 400,590
Type of Revenue [Extensible List]	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember
Cost of products sold	$ 116,800	$ 115,000	$ 349,500	$ 322,200
Type of Cost, Good or Service [Extensible List]	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember
Gross profit (loss)	$ 22,400	$ 27,300	$ 74,200	$ 78,400
SG&A	10,500	10,900	34,000	32,900
Operating income (loss)	11,900	16,400	40,200	45,500
Income (loss) before income taxes	$ 11,900	$ 16,400	$ 40,200	$ 45,500
Supplementary Data
Net tons sold | T	37,400	39,700	110,400	112,900
Depreciation, depletion and amortization	$ 7,100	$ 7,100	$ 21,700	$ 20,900
Capital expenditures	3,000	3,800	10,900	10,600
Advanced Airlaid Materials [Member]
Segment Reporting Information [Line Items]
Net sales	$ 70,679	$ 67,771	$ 213,099	$ 190,445
Type of Revenue [Extensible List]	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember
Cost of products sold	$ 62,300	$ 57,200	$ 184,700	$ 160,700
Type of Cost, Good or Service [Extensible List]	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember
Gross profit (loss)	$ 8,400	$ 10,600	$ 28,400	$ 29,700
SG&A	2,900	2,400	8,100	6,900
Operating income (loss)	5,500	8,200	20,300	22,800
Income (loss) before income taxes	$ 5,500	$ 8,200	$ 20,300	$ 22,800
Supplementary Data
Net tons sold | T	24,000	23,800	72,400	69,500
Depreciation, depletion and amortization	$ 3,400	$ 2,500	$ 9,700	$ 7,100
Capital expenditures	$ 1,900	$ 12,600	$ 17,600	$ 36,100
Other and Unallocated [Member]
Segment Reporting Information [Line Items]
Type of Revenue [Extensible List]	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember
Cost of products sold	$ 900	$ 500	$ 2,900	$ 2,900
Type of Cost, Good or Service [Extensible List]	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember
Gross profit (loss)	$ (900)	$ (500)	$ (2,900)	$ (2,900)
SG&A	12,400	13,800	39,800	41,700
(Gains) losses on dispositions of plant, equipment and timberlands, net	(200)	(100)	(1,900)	(200)
Operating income (loss)	(13,100)	(14,200)	(40,800)	(44,400)
Non-operating expense	(1,600)	(3,700)	(9,900)	(10,400)
Income (loss) before income taxes	(14,700)	(17,900)	(50,700)	(54,800)
Supplementary Data
Depreciation, depletion and amortization	1,000	600	3,300	2,300
Capital expenditures	$ 1,300	$ 4,600	$ 3,700	$ 11,300

Condensed Consolidating Finan_3

Condensed Consolidating Financial Statements - Additional Information (Detail)	Sep. 30, 2018	Oct. 03, 2012
PHG Tea Leaves, Inc. [Member]
Schedule of Equity Method Investments [Line Items]
Percentage owned in domestic subsidiaries	100.00%
Mollanvick, Inc. [Member]
Schedule of Equity Method Investments [Line Items]
Percentage owned in domestic subsidiaries	100.00%
Glatfelter Holdings, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Percentage owned in domestic subsidiaries	100.00%
Glatfelter Composite Fibers N. A., Inc. [Member]
Schedule of Equity Method Investments [Line Items]
Percentage owned in domestic subsidiaries	100.00%
Glatfelter Advanced Materials N.A., Inc. [Member]
Schedule of Equity Method Investments [Line Items]
Percentage owned in domestic subsidiaries	100.00%
5.375% Notes [Member]
Schedule of Equity Method Investments [Line Items]
Percent on aggregate principal amount of outstanding	5.375%	5.375%

Condensed Consolidating Finan_4

Condensed Consolidating Financial Statements - Condensed Consolidating Statement of Income (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Condensed Income Statements, Captions [Line Items]
Net sales	$ 209,855	$ 210,120	$ 636,806	$ 591,035
Type of Revenue [Extensible List]	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember
Costs of products sold	$ 179,983	$ 172,745	$ 537,073	$ 485,783
Type of Cost, Good or Service [Extensible List]	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember
Gross profit (loss)	$ 29,872	$ 37,375	$ 99,733	$ 105,252
Selling, general and administrative expenses	25,799	27,083	81,915	81,530
(Gains) losses on dispositions of plant, equipment and timberlands, net	(249)	(93)	(1,939)	(168)
Operating income (loss)	4,322	10,385	19,757	23,890
Other non-operating income (expense)
Interest expense	(3,965)	(3,324)	(11,237)	(10,025)
Interest income	147	51	227	209
Other, net	2,253	(387)	1,131	(558)
Total non-operating expense	(1,565)	(3,660)	(9,879)	(10,374)
Income (loss) before income taxes	2,757	6,725	9,878	13,516
Income tax provision (benefit)	3,462	1,680	7,037	4,429
Income (loss) from continuing operations	(705)	5,045	2,841	9,087
Discontinued operations:
Income (loss) before income taxes	(114,656)	9,661	(128,714)	14,422
Income tax provision (benefit)	(19,530)	2,601	(28,361)	5,515
Income (loss) from discontinued operations	(95,126)	7,060	(100,353)	8,907
Net income (loss)	(95,831)	12,105	(97,512)	17,994
Other comprehensive income (loss)	19,971	17,330	8,338	50,855
Comprehensive income (loss)	(75,860)	29,435	(89,174)	68,849
Adjustments/ Eliminations [Member]
Condensed Income Statements, Captions [Line Items]
Net sales	$ (29,340)	$ (21,799)	$ (79,435)	$ (64,064)
Type of Revenue [Extensible List]	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember
Costs of products sold	$ (29,340)	$ (21,799)	$ (79,435)	$ (64,064)
Type of Cost, Good or Service [Extensible List]	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember
Other non-operating income (expense)
Interest expense	$ 1,549	$ 1,430	$ 4,526	$ 4,049
Interest income	(1,549)	(1,430)	(4,526)	(4,049)
Equity in earnings of subsidiaries	(24,000)	(35,976)	(95,166)	(101,495)
Total non-operating expense	(24,000)	(35,976)	(95,166)	(101,495)
Income (loss) before income taxes	(24,000)	(35,976)	(95,166)	(101,495)
Income (loss) from continuing operations	(24,000)	(35,976)	(95,166)	(101,495)
Discontinued operations:
Net income (loss)	(24,000)	(35,976)	(95,166)	(101,495)
Other comprehensive income (loss)	4,954	(29,771)	38,619	(87,222)
Comprehensive income (loss)	$ (19,046)	$ (65,747)	$ (56,547)	$ (188,717)
Parent Company [Member]
Condensed Income Statements, Captions [Line Items]
Type of Revenue [Extensible List]	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember
Costs of products sold	$ 945	$ 1,596	$ 4,254	$ 1,223
Type of Cost, Good or Service [Extensible List]	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember
Gross profit (loss)	$ (945)	$ (1,596)	$ (4,254)	$ (1,223)
Selling, general and administrative expenses	10,557	12,414	35,457	37,022
(Gains) losses on dispositions of plant, equipment and timberlands, net		1	(17)
Operating income (loss)	(11,502)	(14,011)	(39,694)	(38,245)
Other non-operating income (expense)
Interest expense	(4,439)	(4,018)	(12,773)	(12,078)
Interest income	134	160	413	451
Equity in earnings of subsidiaries	13,217	17,880	49,421	50,298
Other, net	341	589	(1,634)	1,873
Total non-operating expense	9,253	14,611	35,427	40,544
Income (loss) before income taxes	(2,249)	600	(4,267)	2,299
Income tax provision (benefit)	(1,544)	(4,445)	(7,108)	(6,788)
Income (loss) from continuing operations	(705)	5,045	2,841	9,087
Discontinued operations:
Income (loss) before income taxes	(114,656)	9,661	(128,714)	14,422
Income tax provision (benefit)	(19,530)	2,601	(28,361)	5,515
Income (loss) from discontinued operations	(95,126)	7,060	(100,353)	8,907
Net income (loss)	(95,831)	12,105	(97,512)	17,994
Other comprehensive income (loss)	19,971	17,330	8,338	50,855
Comprehensive income (loss)	(75,860)	29,435	(89,174)	68,849
Guarantors [Member]
Condensed Income Statements, Captions [Line Items]
Net sales	$ 35,285	$ 20,588	$ 87,617	$ 63,173
Type of Revenue [Extensible List]	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember
Costs of products sold	$ 32,727	$ 19,525	$ 82,089	$ 60,158
Type of Cost, Good or Service [Extensible List]	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember
Gross profit (loss)	$ 2,558	$ 1,063	$ 5,528	$ 3,015
Selling, general and administrative expenses	43	536	1,716	846
(Gains) losses on dispositions of plant, equipment and timberlands, net	(249)	(114)	(1,929)	(188)
Operating income (loss)	2,764	641	5,741	2,357
Other non-operating income (expense)
Interest expense	(629)	(300)	(1,670)	(619)
Interest income	1,528	1,316	4,219	3,714
Equity in earnings of subsidiaries	10,783	18,096	45,745	51,197
Other, net	1,077	(1,920)	(1,657)	(6,445)
Total non-operating expense	12,759	17,192	46,637	47,847
Income (loss) before income taxes	15,523	17,833	52,378	50,204
Income tax provision (benefit)	2,349	(47)	3,022	(94)
Income (loss) from continuing operations	13,174	17,880	49,356	50,298
Discontinued operations:
Net income (loss)	13,174	17,880	49,356	50,298
Other comprehensive income (loss)	(1,767)	14,812	(19,318)	43,878
Comprehensive income (loss)	11,407	32,692	30,038	94,176
Non Guarantors [Member]
Condensed Income Statements, Captions [Line Items]
Net sales	$ 203,910	$ 211,331	$ 628,624	$ 591,926
Type of Revenue [Extensible List]	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember
Costs of products sold	$ 175,651	$ 173,423	$ 530,165	$ 488,466
Type of Cost, Good or Service [Extensible List]	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember
Gross profit (loss)	$ 28,259	$ 37,908	$ 98,459	$ 103,460
Selling, general and administrative expenses	15,199	14,133	44,742	43,662
(Gains) losses on dispositions of plant, equipment and timberlands, net		20	7	20
Operating income (loss)	13,060	23,755	53,710	59,778
Other non-operating income (expense)
Interest expense	(446)	(436)	(1,320)	(1,377)
Interest income	34	5	121	93
Other, net	835	944	4,422	4,014
Total non-operating expense	423	513	3,223	2,730
Income (loss) before income taxes	13,483	24,268	56,933	62,508
Income tax provision (benefit)	2,657	6,172	11,123	11,311
Income (loss) from continuing operations	10,826	18,096	45,810	51,197
Discontinued operations:
Net income (loss)	10,826	18,096	45,810	51,197
Other comprehensive income (loss)	(3,187)	14,959	(19,301)	43,344
Comprehensive income (loss)	$ 7,639	$ 33,055	$ 26,509	$ 94,541

Condensed Consolidating Finan_5

Condensed Consolidating Financial Statements - Condensed Consolidating Balance Sheet (Detail) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Assets
Cash and cash equivalents	$ 234,070	$ 116,219
Other current assets	318,815	278,800
Current assets held for sale	188,322	189,952
Plant, equipment and timberlands, net	497,568	515,183
Other assets	240,269	222,730
Noncurrent assets held for sale	271,731	407,911
Total assets	1,750,775	1,730,795
Liabilities and Shareholders' Equity
Current liabilities	220,235	234,356
Current liabilities held for sale	110,163	112,820
Long-term debt	635,406	470,098
Deferred income taxes	56,599	83,571
Other long-term liabilities	80,946	79,649
Long-term liabilities held for sale	40,480	41,373
Total liabilities	1,143,829	1,021,867
Shareholders’ equity	606,946	708,928
Total liabilities and shareholders’ equity	1,750,775	1,730,795
Adjustments/ Eliminations [Member]
Assets
Other current assets	(343,585)	(277,989)
Investments in subsidiaries	(1,508,810)	(1,483,023)
Total assets	(1,852,395)	(1,761,012)
Liabilities and Shareholders' Equity
Current liabilities	(343,585)	(277,989)
Total liabilities	(343,585)	(277,989)
Shareholders’ equity	(1,508,810)	(1,483,023)
Total liabilities and shareholders’ equity	(1,852,395)	(1,761,012)
Parent Company [Member]
Assets
Cash and cash equivalents	1,735	1,292
Other current assets	87,635	59,341
Current assets held for sale	188,322	189,952
Plant, equipment and timberlands, net	24,618	24,671
Investments in subsidiaries	848,832	829,895
Other assets	99,394	82,201
Noncurrent assets held for sale	271,731	407,911
Total assets	1,522,267	1,595,263
Liabilities and Shareholders' Equity
Current liabilities	312,663	289,967
Current liabilities held for sale	110,163	112,820
Long-term debt	406,962	368,496
Deferred income taxes	(14,346)	14,081
Other long-term liabilities	59,399	59,598
Long-term liabilities held for sale	40,480	41,373
Total liabilities	915,321	886,335
Shareholders’ equity	606,946	708,928
Total liabilities and shareholders’ equity	1,522,267	1,595,263
Guarantors [Member]
Assets
Cash and cash equivalents	3,682	720
Other current assets	273,697	217,822
Plant, equipment and timberlands, net	86,722	80,992
Investments in subsidiaries	659,978	653,128
Total assets	1,024,079	952,662
Liabilities and Shareholders' Equity
Current liabilities	97,154	54,640
Long-term debt	68,000	51,000
Deferred income taxes	18,293	16,814
Other long-term liabilities	654	313
Total liabilities	184,101	122,767
Shareholders’ equity	839,978	829,895
Total liabilities and shareholders’ equity	1,024,079	952,662
Non Guarantors [Member]
Assets
Cash and cash equivalents	228,653	114,207
Other current assets	301,068	279,626
Plant, equipment and timberlands, net	386,228	409,520
Other assets	140,875	140,529
Total assets	1,056,824	943,882
Liabilities and Shareholders' Equity
Current liabilities	154,003	167,738
Long-term debt	160,444	50,602
Deferred income taxes	52,652	52,676
Other long-term liabilities	20,893	19,738
Total liabilities	387,992	290,754
Shareholders’ equity	668,832	653,128
Total liabilities and shareholders’ equity	$ 1,056,824	$ 943,882

Condensed Consolidating Finan_6

Condensed Consolidating Financial Statements - Condensed Consolidating Statement of Cash Flows (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided (used) by Operating activities	$ (16,212)	$ 20,501
Investing activities
Expenditures for purchases of plant, equipment and timberlands	(32,155)	(57,978)
Proceeds from disposals of plant, equipment and timberlands, net	2,073	209
Other	(68)	(100)
Total investing activities	(30,150)	(57,869)
Financing activities
Net borrowings of long-term debt	166,388	89,587
Payment of dividends to shareholders	(17,064)	(16,805)
Payments related to share-based compensation awards and other	(1,008)	(128)
Total financing activities	148,316	72,654
Effect of exchange rate on cash	(3,931)	5,448
Net increase in cash and cash equivalents	98,023	40,734
Change in cash from discontinued operations	19,828	(11,891)
Cash and cash equivalents at the beginning of period	116,219	55,444
Cash and cash equivalents at the end of period	234,070	84,287
Adjustments/ Eliminations [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided (used) by Operating activities	(20,000)
Investing activities
Repayments from intercompany loans		(12,000)
Advances of intercompany loans	5,285	13,500
Intercompany capital contributed	315	2,400
Intercompany capital returned	(20,000)
Total investing activities	(14,400)	3,900
Intercompany capital returned	20,000
Financing activities
Repayments of intercompany loans		12,000
Borrowings of intercompany loans	(5,285)	(13,500)
Intercompany capital received	(315)	(2,400)
Intercompany capital returned	20,000
Payment of intercompany dividend	20,000
Total financing activities	34,400	(3,900)
Cash and cash equivalents at the end of period	0	0
Parent Company [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided (used) by Operating activities	(40,899)	(49,361)
Investing activities
Expenditures for purchases of plant, equipment and timberlands	(3,655)	(11,221)
Proceeds from disposals of plant, equipment and timberlands, net	17
Intercompany capital contributed		(2,000)
Other	(68)	(100)
Total investing activities	(3,706)	(13,321)
Financing activities
Net borrowings of long-term debt	38,007	73,298
Payment of dividends to shareholders	(17,064)	(16,805)
Borrowings of intercompany loans	5,285	13,500
Payments related to share-based compensation awards and other	(1,008)	(128)
Total financing activities	25,220	69,865
Net increase in cash and cash equivalents	(19,385)	7,183
Change in cash from discontinued operations	19,828	(11,891)
Cash and cash equivalents at the beginning of period	1,292	5,082
Cash and cash equivalents at the end of period	1,735	374
Guarantors [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided (used) by Operating activities	3,350	(3,241)
Investing activities
Expenditures for purchases of plant, equipment and timberlands	(13,834)	(32,847)
Proceeds from disposals of plant, equipment and timberlands, net	2,046	209
Repayments from intercompany loans		12,000
Advances of intercompany loans	(5,285)	(13,500)
Intercompany capital contributed	(315)	(400)
Intercompany capital returned	20,000
Total investing activities	2,612	(34,538)
Intercompany capital returned	(20,000)
Financing activities
Net borrowings of long-term debt	17,000	35,000
Intercompany capital received		2,000
Payment of intercompany dividend	(20,000)
Total financing activities	(3,000)	37,000
Net increase in cash and cash equivalents	2,962	(779)
Cash and cash equivalents at the beginning of period	720	1,461
Cash and cash equivalents at the end of period	3,682	682
Non Guarantors [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Net cash provided (used) by Operating activities	41,337	73,103
Investing activities
Expenditures for purchases of plant, equipment and timberlands	(14,666)	(13,910)
Proceeds from disposals of plant, equipment and timberlands, net	10
Total investing activities	(14,656)	(13,910)
Financing activities
Net borrowings of long-term debt	111,381	(18,711)
Repayments of intercompany loans		(12,000)
Intercompany capital received	315	400
Intercompany capital returned	(20,000)
Total financing activities	91,696	(30,311)
Effect of exchange rate on cash	(3,931)	5,448
Net increase in cash and cash equivalents	114,446	34,330
Cash and cash equivalents at the beginning of period	114,207	48,901
Cash and cash equivalents at the end of period	$ 228,653	$ 83,231