Calgon Carbon 10-K 28 Feb 14 2013 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2013	Feb. 20, 2014	Jun. 30, 2013
Document and Entity Information	'	'	'
Entity Registrant Name	'CALGON CARBON CORPORATION	'	'
Entity Central Index Key	'0000812701	'	'
Document Type	'10-K	'	'
Document Period End Date	31-Dec-13	'	'
Amendment Flag	'false	'	'
Current Fiscal Year End Date	'--12-31	'	'
Entity Well-known Seasoned Issuer	'Yes	'	'
Entity Voluntary Filers	'No	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Filer Category	'Large Accelerated Filer	'	'
Entity Public Float	'	'	$887,660,043.72
Entity Common Stock, Shares Outstanding	'	53,730,499	'
Document Fiscal Year Focus	'2013	'	'
Document Fiscal Period Focus	'FY	'	'

CONSOLIDATED_STATEMENTS_OF_COM

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $)	12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME	'	'	'
Net sales	$547,939	$562,255	$541,472
Cost of products sold (excluding depreciation)	366,962	392,382	364,384
Depreciation and amortization	28,938	26,320	24,337
Selling, general and administrative expenses	76,958	85,345	87,926
Research and development expenses	6,037	8,025	7,930
Restructuring (Note 2)	-129	10,211	'
Litigation and other contingencies (Note 17)	284	111	-337
Total costs and expenses	479,050	522,394	484,240
Income from operations	68,889	39,861	57,232
Interest income	136	35	467
Interest expense	-462	-80	'
Other expense - net	-1,364	-2,480	-1,309
Income before income tax provision	67,199	37,336	56,390
Income tax provision (Note 13)	21,486	14,064	17,166
Net income	45,713	23,272	39,224
Other comprehensive income (loss), net of tax (Note 14)	'	'	'
Foreign currency translation	-305	1,197	-1,123
Derivatives	424	854	756
Employee benefit plans	15,268	-5,061	-9,076
Total other comprehensive income (loss)	15,387	-3,010	-9,443
Total comprehensive income	$61,100	$20,262	$29,781
Basic net income per common share (in dollars per share)	$0.85	$0.41	$0.70
Diluted net income per common share (in dollars per share)	$0.84	$0.41	$0.69
Weighted average shares outstanding	'	'	'
Basic (in shares)	53,897,834	56,304,636	56,243,015
Diluted (in shares)	54,671,029	56,835,560	56,993,948

CONSOLIDATED_BALANCE_SHEETS

CONSOLIDATED BALANCE SHEETS (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$32,942	$18,161
Receivables, net of allowance for losses of $1,328 and $1,362	96,996	101,918
Revenue recognized in excess of billings on uncompleted contracts	8,090	14,680
Inventories	109,517	107,166
Deferred income taxes - current	20,787	17,317
Other current assets	13,118	13,964
Total current assets	281,450	273,206
Property, plant and equipment, net	266,849	262,993
Intangibles, net	5,602	7,388
Goodwill	26,552	27,030
Deferred income taxes - long-term	3,791	3,558
Other assets	5,834	3,594
Total assets	590,078	577,769
Current liabilities:	'	'
Accounts payable and accrued liabilities	57,213	76,214
Restructuring reserve	535	3,226
Billings in excess of revenue recognized on uncompleted contracts	5,406	3,865
Payroll and benefits payable	14,144	10,114
Accrued income taxes	2,726	2,666
Short-term debt	2,172	19,565
Total current liabilities	82,196	115,650
Long-term debt	32,114	44,408
Deferred income taxes - long-term	30,902	12,379
Accrued pension and other liabilities	28,361	54,035
Total liabilities	173,573	226,472
Commitments and contingencies (Notes 9 and 17)	'	'
Shareholders' equity:	'	'
Common shares, $.01 par value, 100,000,000 shares authorized, 57,232,050 and 56,450,632 shares issued	572	564
Additional paid-in capital	170,320	168,599
Retained earnings	316,224	270,511
Accumulated other comprehensive loss	-1,140	-16,527
Total of shareholders' equity before adjusting treasury stock	485,976	423,147
Treasury stock, at cost, 6,242,326 and 6,415,176 shares	-69,471	-71,850
Total shareholders' equity	416,505	351,297
Total liabilities and shareholders' equity	$590,078	$577,769

CONSOLIDATED_BALANCE_SHEETS_Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, except Share data, unless otherwise specified
CONSOLIDATED BALANCE SHEETS	'	'
Receivables, allowance for losses (in dollars)	$1,328	$1,362
Common shares, par value (in dollars per share)	$0.01	$0.01
Common shares, shares authorized	100,000,000	100,000,000
Common shares, shares issued	57,232,050	56,450,632
Treasury stock, shares	6,242,326	6,415,176

CONSOLIDATED_STATEMENTS_OF_CAS

CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash flows from operating activities	'	'	'
Net income	$45,713	$23,272	$39,224
Adjustments to reconcile net income to net cash provided by operating activities:	'	'	'
Depreciation and amortization	28,938	26,320	24,337
Employee benefit plan provisions	2,451	5,431	2,026
Stock-based compensation	3,128	2,434	2,577
Excess tax benefit from stock-based compensation	'	'	143
Deferred income tax expense	4,935	443	13,354
Restructuring (Note 2)	-129	10,211	'
Restructuring cash payments (Note 2)	-3,140	-1,616	'
Changes in assets and liabilities - net of effects from foreign exchange:	'	'	'
Decrease (increase) in receivables	1,805	-828	-6,371
(Increase) decrease in inventories	-5,269	10,320	-15,041
Decrease (increase) in revenue in excess of billings on uncompleted contracts and other current assets	8,380	-5,715	-2,296
(Decrease) increase in accounts payable and accrued liabilities	-14,235	4,201	7,680
Pension contributions	-4,717	-3,913	-8,087
Other items - net	-1,082	2,117	-4,526
Net cash provided by operating activities	66,778	72,677	53,020
Cash flows from investing activities	'	'	'
Proceeds from sale of business - net of cash (Note 2)	642	'	'
Capital expenditures	-30,271	-60,680	-72,101
Government grants received	1,709	947	2,189
Cash pledged for collateral	'	'	-21
Cash released from collateral	'	1,152	'
Net cash used in investing activities	-27,920	-58,581	-69,933
Cash flows from financing activities	'	'	'
Proceeds of debt obligations	10,476	'	373
Reductions of debt obligations	-5,876	-3,202	-3,034
Treasury stock purchased	-3,334	-577	-422
Common stock issued	4,066	1,601	2,074
Accelerated share repurchase (Note 10)	'	-50,000	'
Excess tax benefit from stock-based compensation	'	'	-143
Net cash used in financing activities	-26,885	-10,174	-476
Effect of exchange rate changes on cash	2,808	665	-3,029
Increase (decrease) in cash and cash equivalents	14,781	4,587	-20,418
Cash and cash equivalents, beginning of year	18,161	13,574	33,992
Cash and cash equivalents, end of year	32,942	18,161	13,574
Japanese Revolving credit facility - short-term (note 7)	'	'	'
Cash flows from financing activities	'	'	'
Revolving credit facility borrowings	4,925	10,546	179,550
Revolving credit facility repayments	-19,142	-12,792	-178,874
U.S. Revolving credit facility - long-term (note 7)	'	'	'
Cash flows from financing activities	'	'	'
Revolving credit facility borrowings	113,047	125,550	'
Revolving credit facility repayments	($131,047)	($81,300)	'

CONSOLIDATED_STATEMENTS_OF_SHA

CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (USD $)	Total	Common Shares	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Sub-Total	Treasury Stock
In Thousands, except Share data, unless otherwise specified
Balance at Dec. 31, 2010	$342,964	$590	$169,284	$208,015	($4,074)	$373,815	($30,851)
Balance (in shares) at Dec. 31, 2010	'	58,989,578	'	'	'	'	3,070,720
Increase (Decrease) in Shareholders' Equity	'	'	'	'	'	'	'
Net income	39,224	'	'	39,224	'	39,224	'
Other comprehensive income (loss), net of tax (Note 14)	-9,443	'	'	'	-9,443	-9,443	'
Employee and director stock plans	4,794	4	4,790	'	'	4,794	'
Employee and director stock plans (in shares)	'	392,058	'	'	'	'	'
Treasury stock purchased	-422	'	'	'	'	'	-422
Treasury stock purchased (in shares)	'	'	'	'	'	'	29,699
Balance at Dec. 31, 2011	377,117	594	174,074	247,239	-13,517	408,390	-31,273
Balance (in shares) at Dec. 31, 2011	'	59,381,636	'	'	'	'	3,100,419
Increase (Decrease) in Shareholders' Equity	'	'	'	'	'	'	'
Net income	23,272	'	'	23,272	'	23,272	'
Other comprehensive income (loss), net of tax (Note 14)	-3,010	'	'	'	-3,010	-3,010	'
Employee and director stock plans	4,495	3	4,492	'	'	4,495	'
Employee and director stock plans (in shares)	'	344,998	'	'	'	'	'
Accelerated share repurchase (Note 10)	-50,000	-33	-9,967	'	'	-10,000	-40,000
Accelerated share repurchase (Note 10) (in shares)	'	-3,276,002	'	'	'	'	3,276,002
Treasury stock purchased	-577	'	'	'	'	'	-577
Treasury stock purchased (in shares)	'	'	'	'	'	'	38,755
Balance at Dec. 31, 2012	351,297	564	168,599	270,511	-16,527	423,147	-71,850
Balance (in shares) at Dec. 31, 2012	'	56,450,632	'	'	'	'	6,415,176
Increase (Decrease) in Shareholders' Equity	'	'	'	'	'	'	'
Net income	45,713	'	'	45,713	'	45,713	'
Other comprehensive income (loss), net of tax (Note 14)	15,387	'	'	'	15,387	15,387	'
Employee and director stock plans	7,442	4	7,438	'	'	7,442	'
Employee and director stock plans (in shares)	'	441,084	'	'	'	'	'
Accelerated share repurchase (Note 10)	'	4	-5,717	'	'	-5,713	5,713
Accelerated share repurchase (Note 10) (in shares)	'	340,334	'	'	'	'	-340,334
Share repurchase (Note 10)	-2,991	'	'	'	'	'	-2,991
Share repurchase (Note 10) (in shares)	'	'	'	'	'	'	146,800
Treasury stock purchased	-343	'	'	'	'	'	-343
Treasury stock purchased (in shares)	'	'	'	'	'	'	20,684
Balance at Dec. 31, 2013	$416,505	$572	$170,320	$316,224	($1,140)	$485,976	($69,471)
Balance (in shares) at Dec. 31, 2013	'	57,232,050	'	'	'	'	6,242,326

Summary_of_Accounting_Policies

Summary of Accounting Policies	12 Months Ended
	Dec. 31, 2013
Summary of Accounting Policies	'
Summary of Accounting Policies	'
	1. Summary of Accounting Policies
	Operations
	Calgon Carbon Corporation (the Company) is a global leader in services and solutions for purifying water and air, food, beverage, and industrial process streams. The Company’s operations are principally conducted in three business segments: Activated Carbon and Service, Equipment, and Consumer. Each of these segments includes the production, design and marketing of products and services specifically developed for the purification, separation and concentration of liquids and gases. The Activated Carbon and Service segment relies on activated carbon as a base material, while the Equipment segment relies on a variety of methods and materials which involve other products in addition to activated carbon. The Consumer segment brings the Company’s purification technologies directly to the consumer in the form of products and services. The Company’s largest markets are in the United States, Europe, and Japan. The Company also has markets in Africa, Canada, India, Latin America, and in other parts of Asia.
	Principles of Consolidation
	The consolidated financial statements include the accounts of majority-owned and controlled subsidiaries.  Investments in business entities in which the Company does not have control, but has the ability to exercise significant influence over the operating and financial policies, are accounted for under the equity method. All significant intercompany transactions and accounts have been eliminated in consolidation.
	Foreign Currency
	Substantially all assets and liabilities of the Company’s international operations are translated at year-end exchange rates; income and expenses are translated at average exchange rates prevailing during the year. Translation adjustments represent other comprehensive income or loss and are accumulated in a separate component of shareholders’ equity, net of tax effects. Transaction gains and losses are included in Other expense-net.
	Revenue Recognition
	Revenue and related costs are recognized when goods are shipped or services are rendered to customers provided that ownership and risk of loss have passed to the customer, the price to the customer is fixed or determinable, and collection is reasonably assured. Revenue for major equipment projects is recognized under the percentage of completion method. The Company’s major equipment projects generally have a long project life cycle from bid solicitation to project completion. The nature of the contracts are generally fixed price with milestone billings. The Company recognizes revenue for these projects based on the fixed sales prices multiplied by the percentage of completion. In applying the percentage of completion method, a project’s percent complete as of any balance sheet date is computed as the ratio of total costs incurred to date divided by the total estimated costs at completion. As changes in the estimates of total costs at completion and/or estimated total losses on projects are identified, appropriate earnings adjustments are recorded during the period that the change or loss is identified. The Company has a history of making reasonably dependable estimates of costs at completion on contracts that follow the percentage of completion method; however, due to uncertainties inherent in the estimation process, it is possible that actual project costs at completion could vary from estimates. The principal components of costs include material, direct labor, subcontracts, and allocated indirect costs. Indirect costs primarily consist of administrative labor and associated operating expenses, which are allocated to the respective projects on actual hours charged to the project utilizing a standard hourly rate.
	Allowance for Doubtful Accounts
	The Company maintains allowances for doubtful accounts for estimated losses resulting from the inability of its customers to make required payments. The amount of allowance recorded is primarily based upon a periodic review of specific customer transactions that remain outstanding at least three months beyond their respective due dates.
	Inventories
	Inventories are carried at the lower of cost or market. Inventory costs are primarily determined using the first-in, first-out (FIFO) method.
	Property, Plant and Equipment
	Property, plant and equipment is recorded at cost. Repair and maintenance costs are expensed as incurred. Depreciation for financial reporting purposes is computed on the straight-line method over the estimated service lives of the assets, which are from 15 to 30 years for land improvements and buildings, 5 to 15 years for furniture, machinery and equipment, 5 to 10 years for customer capital, 5 years for vehicles, and 5 to 10 years for computer hardware and software.  Expenditures for new facilities and improvements that substantially extend the capacity or useful life of an asset are capitalized.
	Goodwill and Other Intangible Assets
	Goodwill represents the excess of the cost of an acquired business over the fair value of the identifiable tangible and intangible assets acquired and liabilities assumed in a business combination. Identifiable intangible assets acquired in business combinations are recorded based on their fair values at the date of acquisition. In accordance with guidance within Accounting Standards Codification (ASC) 350, “Intangibles - Goodwill and Other,” goodwill and identifiable intangible assets with indefinite lives are not subject to amortization but must be evaluated for impairment. None of the Company’s identifiable intangible assets other than goodwill have indefinite lives.
	The Company has elected to perform the annual impairment test of its goodwill, as required, on December 31 of each year by initially comparing the fair value of each of the Company’s reporting units to their related carrying values. If the fair value of the reporting unit is less than its carrying value, the Company performs an additional step to determine the implied fair value of the goodwill. The implied fair value of goodwill is determined by first allocating the fair value of the reporting unit to all of the assets and liabilities of the unit and then computing the excess of the unit’s fair value over the amounts assigned to the assets and liabilities. If the carrying value of goodwill exceeds the implied fair value of goodwill, such excess represents the amount of goodwill impairment, and the Company recognizes such impairment accordingly. Fair values are estimated using discounted cash flows and other valuation methodologies that are based on projections of the amounts and timing of future revenues and cash flows, assumed discount rates and other assumptions as deemed appropriate. The Company also considers such factors as historical performance, anticipated market conditions, operating expense trends and capital expenditure requirements.
	The Company’s identifiable intangible assets other than goodwill have finite lives. Certain of these intangible assets, such as customer relationships, are amortized using an accelerated methodology while others, such as patents, are amortized on a straight-line basis over their estimated useful lives. In addition, intangible assets with finite lives are evaluated for impairment whenever events or circumstances indicate that their carrying amount may not be recoverable, as prescribed by guidance within ASC 360, “Property, Plant, and Equipment.”
	Long-Lived Assets
	The Company evaluates long-lived assets under the provisions of ASC 360 “Property, Plant, and Equipment,” which addresses financial accounting and reporting for the impairment of long-lived assets and for long-lived assets to be disposed of. For assets to be held and used, the Company groups a long-lived asset or assets with other assets and liabilities at the lowest level for which identifiable cash flows are largely independent of the cash flows of other assets and liabilities. An impairment loss for an asset group reduces only the carrying amounts of a long-lived asset or assets of the group being evaluated. The loss is allocated to the long-lived assets of the group on a pro-rata basis using the relative carrying amounts of those assets, except that the loss allocated to an individual long-lived asset of the group does not reduce the carrying amount of that asset below its fair value whenever that fair value is determinable without undue cost and effort. Estimates of future cash flows to test the recoverability of a long-lived asset group include only the future cash flows that are directly associated with and that are expected to arise as a direct result of the use and eventual disposition of the asset group. The future cash flow estimates used by the Company exclude interest charges.
	Income Taxes
	Deferred tax assets and liabilities are recognized for the future tax consequences of temporary differences between the book and tax basis of assets and liabilities. If it is more likely than not that some portion or all of a deferred tax asset will not be realized, a valuation allowance is recognized. The Company assesses its ability to realize deferred tax assets based on normalized historical performance and on projections of future taxable income in the relevant tax jurisdictions. Normalized historical performance for purposes of this assessment includes adjustments for those income and expense items that are unusual and non-recurring in nature and are not expected to affect results in future periods. Such unusual and non-recurring items include the effects of legal fees or settlements associated with specific litigation matters and restructuring costs. The Company’s projections of future taxable income considers known events, such as the passage of legislation or expected occurrences, and do not reflect a general growth assumption. The Company’s estimates of future taxable income are reviewed annually or whenever events or changes in circumstances indicate that such projections should be modified.
	The Company utilizes guidance within ASC 740 “Income Taxes” regarding the accounting for uncertainty in income taxes.  This guidance prescribes recognition and measurement standards for a tax position taken or expected to be taken in a tax return. According to this guidance, the evaluation of a tax position is a two step process. The first step is the determination of whether a tax position should be recognized in the financial statements. The benefit of a tax position taken or expected to be taken in a tax return is to be recognized only if the Company determines that it is more likely than not that the tax position will be sustained upon examination by the tax authorities based upon the technical merits of the position. In step two, for those tax positions which should be recognized, the measurement of a tax position is determined as being the largest amount of benefit that is greater than 50% likely of being realized upon ultimate settlement.
	No provision is made for U.S. income taxes on the undistributed earnings of non-U.S. subsidiaries of $77.4 million because these earnings are intended to be indefinitely reinvested outside the United States. These earnings would become subject to income tax if they were remitted as dividends, were loaned to the Company or a U.S. affiliate, or if the Company were to sell its ownership interest in the subsidiaries. Determination of the amount of unrecognized deferred U.S. income tax liability on these indefinitely reinvested unremitted earnings is not practicable.
	Pensions
	Accounting for pensions involves estimating the cost of benefits to be provided well into the future and attributing that cost over the time period each employee works. To accomplish this, extensive use is made of assumptions about inflation, investment returns, mortality, turnover and discount rates. These assumptions are reviewed annually. In determining the expected return on plan assets, the Company evaluates long-term actual return information, the mix of investments that comprise plan assets and future estimates of long-term investment returns.  In determining the discount rates for pension obligations, the Company evaluates long-term corporate bonds that receive one of the two highest ratings given by a recognized rating agency.
	Net Income per Common Share
	Basic net income per common share is computed by dividing net income by the weighted average number of common shares outstanding during the period. Diluted net income per common share is computed by dividing net income by the weighted average number of common shares outstanding plus all potential dilutive common shares outstanding during the period. Potential dilutive common shares are determined using the treasury stock method. Under the treasury stock method, exercise of options is assumed at the beginning of the period when the average stock price during the period exceeds the exercise price of outstanding options and common shares are assumed issued. The proceeds from exercise are assumed to be used to purchase common stock at the average market price during the period. The incremental shares to be issued are considered to be the potential dilutive common shares outstanding.
	Cash and Cash Equivalents
	The Company considers all highly liquid, short-term investments made with an original maturity of three months or less to be cash equivalents.
	Derivative Instruments
	The Company applies ASC 815, “Derivatives and Hedging.” ASC 815 establishes accounting and reporting standards for derivative instruments, including certain derivative instruments embedded in other contracts and for hedging activities. Derivative financial instruments are occasionally utilized by the Company to manage risk exposure to movements in foreign exchange rates or the prices of natural gas. The Company enters into derivative financial instruments with high credit quality counterparties and diversifies its positions among such counterparties.  In addition, various master netting arrangements are in place with counterparties to facilitate settlement of gains and losses on these contracts. Changes in the value of the derivative financial instruments are measured at the balance sheet date and recognized in current earnings or other comprehensive income depending on whether the derivative is designated as part of a hedge transaction and meets certain other criteria. The Company does not hold derivative financial instruments for trading purposes.
	Contingencies
	The Company from time to time is subject to various legal proceedings, lawsuits and claims, including employment, product warranty and environmental matters of the nature considered normal to its business.  It is the Company’s policy to accrue for amounts related to the legal matters when it is probable that a liability has been incurred and the loss amount is reasonably estimable.  Estimates are developed through consultation with legal counsel involved in the defense and are based upon an analysis of probable results, assuming a combination of litigation and settlement strategies. Legal fees associated with defending these various lawsuits and claims are expensed when incurred.
	Government Grants
	The Company’s policy for accounting for government grants, including non-monetary grants at fair value, is to recognize them only when there is reasonable assurance that (a) the Company will comply with the conditions attached to the grants and (b) the grants will be received.  A grant will be recognized as income over the period necessary to match it to the related costs, for which it is intended to compensate, on a systematic basis.  Grants related to assets are presented by deducting them from the asset’s carrying amount.  A grant related to income will be deducted from the related expense.
	Use of Estimates
	The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
	Labor Agreements
	Collective bargaining agreements cover approximately 28% of the Company’s labor force at December 31, 2013.  Approximately 5% of the Company’s labor force is operating under a collective bargaining agreement that expired on July 31, 2013 as the Company continues to work towards obtaining a new agreement.  The Company’s other collective bargaining agreements expire during 2014 and 2017.  Approximately 5% of the Company’s labor force is covered by a collective bargaining agreement that expires in 2014.
	Stock-Based Compensation
	The Company applies ASC 718, “Compensation — Stock Compensation.” In accordance with guidance within ASC 718, compensation expense for stock options is recorded over the vesting period using the fair value on the date of grant, as calculated by the Company using the Black-Scholes model. For time vested restricted stock awards, the nonvested restricted stock grant date fair value, which is the market price of the underlying common stock, is expensed over the vesting period. For certain performance based stock awards, the initial grant date fair value of the performance stock awards that vest subject to a market condition is determined using a Monte Carlo simulation model and is expensed on a straight-line basis over the performance period.  For certain performance based stock awards that vest subject to a performance condition, the initial grant date fair value is the market price of the underlying common stock.  This fair value is expensed on a straight-line basis over the performance period when it is probable that the performance condition will be achieved.  The Company’s stock-based compensation plans are more fully described in Note 11.
	Concentration of Credit Risk
	Financial instruments that potentially expose the Company to concentrations of credit risk consist primarily of cash and cash equivalents and customer receivables. The Company places its cash with financial institutions and invests in low-risk, highly liquid instruments. With respect to customer receivables, the Company believes that it has no significant concentration of credit risk as no single customer accounted for more than 10 percent of gross annual revenues as of December 31, 2013.  The Company closely monitors the credit risk associated with its customers and to date has not experienced material losses.
	Concentration of Deposit Risk
	From time to time, the Company could have cash deposited with financial institutions in excess of federally insured limits. On November 9, 2010 the FDIC issued a Final Rule implementing section 343 of the Dodd-Frank Wall Street Reform and Consumer Protection Act that provided for unlimited insurance coverage of noninterest-bearing transaction accounts.  For the periods December 31, 2011 through December 31, 2012, all noninterest-bearing transaction accounts were fully insured, regardless of the balance of the account, at all FDIC-insured institutions.  As of December 31, 2013, the Company had no cash deposits with U.S. financial institutions in excess of federally insured limits.  However, the Company’s foreign subsidiaries held cash and cash equivalents of $27.6 million and $16.0 million at December 31, 2013 and 2012, respectively.  Generally, cash and cash equivalents held by foreign subsidiaries are not readily available for use in the United States without adverse tax consequences.
	Fair Value
	Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date.  The fair value hierarchy distinguishes between (1) market participant assumptions developed based on market data obtained from independent sources (observable inputs) and (2) an entity’s own assumptions about market participant assumptions developed based on the best information available in the circumstances (unobservable inputs).  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 three levels of the fair value hierarchy are described below:
	·                  Level 1 — Quoted prices (unadjusted) in active markets for identical assets or liabilities;
	·                  Level 2 — Inputs, other than the quoted prices in active markets, that are observable either directly or indirectly; and
	·                  Level 3 — Unobservable inputs that reflect the reporting entity’s own assumptions.
	Fair Value of Financial Instruments Excluding Derivative Instruments
	The Company’s financial instruments, excluding derivative instruments, consist primarily of cash and cash equivalents, short and long-term debt as well as accounts receivable and accounts payable. The fair value of the cash and cash equivalents, accounts receivable, and accounts payable approximates their carrying value because of the short-term maturity of the instruments.  Refer to Note 7 for a discussion of the fair value of the Company’s short and long-term debt.
	New Accounting Pronouncements
	In January 2013, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update, or ASU No. 2013-01, “Balance Sheet (Topic 210): Clarifying the Scope of Disclosures about Offsetting Assets or Liabilities,” or ASU No. 2013-01. ASU 2013-01 clarifies the scope of ASU No. 2011-11, “Balance Sheet (Topic 210): Disclosures about Offsetting Assets and Liabilities,” or ASU 2011-11. ASU 2011-11 requires an entity to disclose information about offsetting and related arrangements to enable users of its financial statements to understand the effect of those arrangements on its financial position. Entities are required to disclose both gross and net information for these instruments. Both ASU 2013-01 and ASU 2011-11 are effective for annual periods beginning on or after January 1, 2013, and interim periods within those annual periods. The Company adopted this guidance effective January 1, 2013. Please refer to Note 16 for the required annual disclosure.
	In February 2013, the FASB issued ASU, No. 2013-02, “Comprehensive Income (Topic 220): Reporting of Amounts Reclassified out of Accumulated Other Comprehensive Income,” or ASU No. 2013-02. ASU 2013-02 requires an entity to provide information about the amounts reclassified out of accumulated other comprehensive income by component. In addition, an entity is required to present, either on the face of the statement where net income is presented or in the notes, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net income but only if the amount reclassified is required under U.S. GAAP to be reclassified to net income. For amounts that are not required under U.S. GAAP to be reclassified in their entirety to net income, an entity is required to cross-reference to other disclosures required under U.S. GAAP that provide additional detail about those amounts. ASU 2013-02 is effective for reporting periods beginning after December 15, 2012. The Company adopted this guidance effective January 1, 2013.  Please refer to Note 14 and the Company’s consolidated statements of comprehensive income for required annual disclosure.
	In February 2013, the FASB issued ASU, No. 2013-04, “Liabilities (Topic 405): Obligations Resulting from Joint and Several Liability Arrangements for Which the Total Amount of the Obligation is Fixed at the Reporting Date,” or ASU No. 2013-04. ASU 2013-04 requires an entity to measure obligations resulting from joint and several liability arrangements for which the total amount of the obligation is fixed at the reporting date, as the sum of the amount the reporting entity agreed to pay on the basis of its arrangement among its co-obligors and any additional amount the reporting entity expects to pay on behalf of its co-obligors.  ASU 2013-04 also requires the nature and amount of the obligation as well as other information about those obligations to be disclosed. ASU 2013-04 is effective for fiscal and interim periods within those years, beginning after December 15, 2013 and should be applied retrospectively. The adoption of this ASU is not expected to have a material impact on the Company’s consolidated financial statements.
	In July 2013, the FASB issued ASU, No. 2013-10, “Derivatives and Hedging (Topic 815): Inclusion of the Fed Funds Effective Swap Rate (or Overnight Index Swap Rate) as a Benchmark Interest Rate for Hedge Accounting Purposes,” or ASU No. 2013-10. ASU 2013-10 permits the Fed Funds Effective Swap Rate (OIS) to be used as a U.S. benchmark interest rate for hedge accounting purposes, in addition to U.S. Treasury and LIBOR. ASU 2013-10 also removes the restriction on using different benchmark rates for similar hedges.  ASU 2013-10 is effective prospectively for qualifying new or redesignated hedging relationships entered into on or after July 17, 2013. The adoption of this ASU has not had a material impact on the Company’s consolidated financial statements.
	In July 2013, the FASB issued ASU, No. 2013-11, “Income Taxes (Topic 740): Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists,” or ASU No. 2013-11. ASU 2013-11 requires that an unrecognized tax benefit, or a portion of an unrecognized tax benefit, should be presented in the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward. To the extent one of these items is not available at the reporting date; the unrecognized tax benefit should be presented in the financial statements as a liability and should not be combined with deferred tax assets.  ASU 2013-11 is effective for fiscal years, and interim periods within those years, beginning after December 15, 2013 and should be applied prospectively to all unrecognized tax benefits that exist at the effective date. Retrospective application is permitted. The adoption of this ASU is not expected to have a material impact on the Company’s consolidated financial statements.

Restructuring_Charges

Restructuring Charges:	12 Months Ended
	Dec. 31, 2013
Restructuring Charges:	'
Restructuring Charges:	'
	2. Restructuring Charges
	During the third quarter of 2012, the Company adopted a worldwide strategy to reduce costs and realign the organization structure in response to the global economic slowdown, rising raw material and maintenance costs, and delays in implementation of environmental regulations, which created a challenging business environment for the Company.  As a part of this strategy, the Company permanently closed, and later sold, its Datong, China manufacturing facility, temporarily idled a reactivation facility in Blue Lake, California, and reduced headcount.  The Company also consolidated operations at certain locations and evaluated non-core businesses for potential divestiture.
	The Company recorded $(0.1) million and $10.2 million of restructuring (income) charges as of December 31, 2013 and 2012, respectively, which were all within the Activated Carbon and Service segment.  In 2013, the Company recorded a pre-tax gain of $0.6 million for the sale of its activated carbon manufacturing facility in Datong, China.  The gain on sale was comprised of the release of foreign currency translation adjustments of $1.0 million which was partially offset by a $0.4 million charge for the write-off of goodwill.  The 2012 restructuring charges included impairment charges of $3.6 million for the permanent closure of the Datong facility as well as $0.4 million for the closure of a warehouse in Belgium.  The Company also recorded termination benefits, including early retirement obligations, as a result of the worldwide reduction of headcount of $4.4 million for the year ended December 31, 2012.  In addition, the Company incurred a $1.4 million pension settlement charge as a result of lump sum pension distributions for those participants in the early retirement program for the year ended December 31, 2012.
	The following table summarizes the restructuring plan and the activity in the restructuring reserve for the years ended December 31, 2013 and 2012:
	(Thousands, except no. of employees)	Employee			Asset			Gain on			Other			Total			Employees
		Termination			Write-offs			Sale						Restructuring			Impacted
		Benefits												Activity
	Restructuring charges	$	5,777		$	4,000		$	—		$	434		$	10,211		120
	Payments	(1,182		)	—			—			(434		)	(1,616		)	(53	)
	Pension settlement	(1,369		)	—			—			—			(1,369		)	—
	Non-cash charges	—			(4,000		)	—			—			(4,000		)	—
	Accrual at December 31, 2012	3,226			—			—			—			3,226			67
	Restructuring charges	357			—			(578		)	92			(129		)	4
	Payments	(3,048		)	—			—			(92		)	(3,140		)	(67	)
	Non-cash charges	—			—			578			—			578			—
	Accrual at December 31, 2013	$	535		$	—		$	—		$	—		$	535		4

Inventories

Inventories	12 Months Ended
	Dec. 31, 2013
Inventories	'
Inventories	'
	3. Inventories
		December 31
	(Dollars in thousands)	2013		2012
	Raw materials	$	31,603	$	29,353
	Finished goods	77,914		77,813
	Total	$	109,517	$	107,166
	Inventories are recorded net of reserves of $1.9 million and $1.8 million for obsolete and slow-moving items at December 31, 2013 and 2012, respectively.

Property_Plant_and_Equipment

Property, Plant and Equipment	12 Months Ended
	Dec. 31, 2013
Property, Plant and Equipment	'
Property, Plant and Equipment	'
	4. Property, Plant and Equipment
		December 31
	(Dollars in thousands)	2013			2012
	Land and improvements	$	27,731		$	24,625
	Buildings	70,433			69,821
	Machinery, equipment and customer capital	462,300			405,774
	Computer hardware and software	26,816			21,267
	Furniture and vehicles	9,749			8,891
	Construction-in-progress	27,836			65,912
		624,865			596,290
	Less accumulated depreciation	(358,016		)	(333,297		)
	Net	$	266,849		$	262,993
	During the third quarter of 2012, the Company announced the closure or potential sale of its Datong, China virgin carbon manufacturing facility and recorded a $3.6 million impairment charge.  This facility was sold in March 2013 (refer to Note 2).
	Depreciation expense for the years ended December 31, 2013, 2012, and 2011 totaled $26.8 million, $24.3 million, and $22.6 million, respectively.
	Repair and maintenance expenses were $16.4 million, $18.4 million, and $15.0 million for the years ended December 31, 2013, 2012, and 2011, respectively.

Goodwill_and_Other_Identifiabl

Goodwill and Other Identifiable Intangible Assets	12 Months Ended
	Dec. 31, 2013
Goodwill and Other Identifiable Intangible Assets	'
Goodwill and Other Identifiable Intangible Assets	'
	5. Goodwill and Other Identifiable Intangible Assets
	The Company has elected to perform the annual impairment test of its goodwill, as required, on December 31 of each year. For purposes of the test, the Company has identified reporting units, as defined within ASC 350, at a regional level for the Activated Carbon and Service segment and at the technology level for the Equipment segment and has allocated goodwill to these reporting units accordingly. The goodwill associated with the Consumer segment is not material and has not been allocated below the segment level.
	The changes in the carrying amount of goodwill by segment for the years ended December 31, 2013 and 2012 are as follows:
		Activated
		Carbon and			Equipment			Consumer
	(Dollars in thousands)	Service Segment			Segment			Segment			Total
	Balance as of January 1, 2012	$	20,167		$	6,612		$	60		$	26,839
	Foreign currency translation	143			48			—			191
	Balance as of December 31, 2012	20,310			6,660			60			27,030
	Restructuring (Note 2)	(419		)	—			—			(419		)
	Foreign currency translation	70			(129		)	—			(59		)
	Balance as of December 31, 2013	$	19,961		$	6,531		$	60		$	26,552
	The following is a summary of the Company’s identifiable intangible assets as of December 31, 2013 and 2012, respectively:
		December 31, 2013
		Weighted
		Average		Gross									Net
		Amortization		Carrying			Foreign			Accumulated			Carrying
	(Dollars in thousands)	Period		Amount			Exchange			Amortization			Amount
	Amortized intangible assets:
	Patents	20.0Years		$	676		$	—		$	(592	)	$	84
	Customer Relationships	15.9 Years		10,450			(209		)	(8,777		)	1,464
	Product Certification	5.4 Years		7,905			(34		)	(5,237		)	2,634
	Unpatented Technology	18.4 Years		3,183			—			(2,457		)	726
	Licenses	20.0 Years		964			(43		)	(227		)	694
	Total	12.9 Years		$	23,178		$	(286	)	$	(17,290	)	$	5,602
		December 31, 2012
		Weighted
		Average		Gross									Net
		Amortization		Carrying			Foreign			Accumulated			Carrying
	(Dollars in thousands)	Period		Amount			Exchange			Amortization			Amount
	Amortized intangible assets:
	Patents	20.0 Years		$	676		$	—		$	(548	)	$	128
	Customer Relationships	15.9 Years		10,450			(223		)	(8,311		)	1,916
	Product Certification	5.4 Years		7,369			(3		)	(3,917		)	3,449
	Unpatented Technology	18.4 Years		3,183			—			(2,191		)	992
	Licenses	20.0 Years		964			119			(180		)	903
	Total	13.1 Years		$	22,642		$	(107	)	$	(15,147	)	$	7,388
	For the years ended December 31, 2013, 2012 and 2011, the Company recognized $2.1 million, $2.0 million, and $1.8 million respectively, of amortization expense related to intangible assets. The Company estimates amortization expense to be recognized during the next five years as follows:
	For the year ending December 31:	(Dollars in thousands)
	2014	$	2,026
	2015	1,360
	2016	1,132
	2017	333
	2018	141

Product_Warranties

Product Warranties	12 Months Ended
	Dec. 31, 2013
Product Warranties	'
Product Warranties	'
	6. Product Warranties
	The Company establishes a warranty reserve for equipment project sales and estimates the warranty accrual based on the history of warranty claims to total sales, adjusted for significant known claims in excess of established reserves.
	Warranty terms are based on the negotiated equipment project contract and typically are either 18 months from shipment date or 12 months from project startup date. The change in the warranty reserve, which is included in accounts payable and accrued liabilities in the consolidated balance sheets, is as follows:
		December 31
	(Dollars in thousands)	2013			2012
	Beginning Balance	$	2,072		$	1,624
	Payments and replacement product	(756		)	(801		)
	Additions to warranty reserve for warranties issued during the period	916			1,249
	Change in the warranty reserve for pre-existing warranties	(36		)	—
	Ending Balance	$	2,196		$	2,072

Borrowing_Arrangements

Borrowing Arrangements	12 Months Ended
	Dec. 31, 2013
Borrowing Arrangements	'
Borrowing Arrangements	'
	7. Borrowing Arrangements
	Short-Term Debt
		December 31
	(Dollars in thousands)	2013		2012
	Borrowings under Japanese Working Capital Loan	$	1,900	$	18,611
	Borrowings under Japanese Term Loan	—		954
	Borrowings under China Credit Facility	272		—
	Total	$	2,172	$	19,565
	Long-Term Debt
		December 31
	(Dollars in thousands)	2013		2012
	U.S. Credit Facility Borrowings	$	26,250	$	44,250
	Borrowings under Japanese Term Loan	5,699		—
	Belgian Loan Borrowings	165		158
	Total	$	32,114	$	44,408
	Credit Agreement
	On November 6, 2013, the Company entered into a new U.S. Credit Agreement (Credit Agreement).  The Credit Agreement replaces the Company’s Prior U.S. Credit Facility (Prior Credit Facility).  The Credit Agreement provides for a senior unsecured revolving credit facility (Revolver) in an amount up to $225.0 million which expires on November 6, 2018.  The Company may request that the Revolver be extended for up to two additional one-year periods.  A portion of the Revolver not in excess of $75.0 million shall be available for standby or letters of credit for trade, $15.0 million shall be available for swing loans, and $50.0 million shall be available for loans or letters of credit in certain foreign denominated currencies.  The Company may have the option to increase the Revolver in an amount not to exceed $75.0 million with the consent of the Lenders.  Availability under the Revolver is conditioned upon various customary conditions.  Total availability under the Revolver at December 31, 2013 was $196.6 million after considering outstanding letters of credit and borrowings.
	The Credit Agreement also provides for senior unsecured delayed draw term loans (Delayed Draw Term Loans) in an aggregate amount up to $75.0 million which expires on November 6, 2020.  The Delayed Draw Term Loans are available for two years from the Closing Date.  The Company may only request a maximum of three Delayed Draw Term Loans with a minimum borrowing of $15.0 million and no amount repaid may be re-borrowed.  Total availability under the Delayed Draw Term Loan at December 31, 2013 was $75.0 million.
	A quarterly nonrefundable commitment fee is payable by the Company based on the unused availability under the Revolver and the undrawn portion of the Delayed Draw Term Loans and is currently equal to 0.15%.
	The interest rate on amounts owed under the Revolver and Delayed Draw Term Loans will be, at the Company’s option, either (i) a fluctuating Base Rate based on the highest of (A) the prime rate announced from time to time by the Agent, (B) the daily federal funds open rate  plus  0.50% and (C) a daily LIBOR rate  plus  1.00%, (ii) a rate based on the published rated offered by leading banks in the London interbank deposit market (or other foreign country for non-Euro or U.S. denominated currencies) divided by  a number equal to 1.00  minus the applicable LIBOR Reserve Percentage comparable borrowings and reserve requirements prescribed by the Board of Governors of the Federal Reserve System of the United States, in each case, plus an applicable margin based on the Company’s leverage ratio as set forth in the Credit Agreement.  The interest rate per annum on outstanding borrowings as of December 31, 2013 ranged from 1.17% to 3.25%.
	The Company incurred issuance costs of $0.7 million for the Credit Agreement which were deferred and are being amortized over the term of the Revolver and Delayed Draw Term Loan facilities.
	Total outstanding borrowings under the Revolver were $26.3 million at December 31, 2013 and are shown as long-term debt within the consolidated balance sheet.  There were no outstanding borrowings under the Delayed Draw Term Loan at December 31, 2013.  The borrowings and repayments are presented on a gross basis within the Company’s consolidated statement of cash flows.
	Certain of the Company’s Domestic Subsidiaries unconditionally guarantee all indebtedness and obligations related to borrowings under the Credit Agreement.  The Company’s obligations under the Credit Agreement are unsecured.
	The Credit Agreement contains customary affirmative and negative covenants for credit facilities of this type.  The Company is permitted to pay dividends so long as there remains $50.0 million of availability under the Credit Agreement and debt is less than or equal to 2.75x earnings before interest, taxes, depreciation and amortization.  In addition, the Credit Agreement includes limitations on the Company and its subsidiaries with respect to indebtedness, additional liens, disposition of assets or subsidiaries, and transactions with affiliates.  The Company must comply with certain financial covenants including minimum interest coverage ratio and maximum leverage ratio as defined within the Credit Agreement.  The Credit Agreement also provides for customary events of default, including failure to pay principal or interest when due, breach of representations and warranties, certain insolvency or receivership events affecting the Company and its subsidiaries and a change in control of the Company.  If an event of default occurs, the Lenders will be under no further obligations to make loans or issue Letters of Credit.  Upon the occurrence of certain events of default, all outstanding obligations of the Company automatically will become immediately due and payable, and other events of default will allow the Agent to declare all or any portion of the outstanding obligations of the Company to be immediately due and payable.
	Prior Credit Facility
	The Company’s Prior Credit Facility was terminated on November 6, 2013 and as a result, approximately $0.1 million of the previously deferred issuance costs were written off.  The Prior Credit Facility was due to expire on May 8, 2014 and contained a revolving credit capacity of $125.0 million.
	Availability under the Prior Credit Facility was dependent upon various customary conditions.  A quarterly nonrefundable commitment fee was payable by the Company based on the unused availability under the Amended Credit Agreement and was equal to 0.25%.  Total availability under the Prior Credit Facility at December 31, 2012 was $122.8 million after considering outstanding letters of credit and borrowings.
	The interest rate on amounts owed under the Prior Credit Facility were, at the Company’s option, either (i) a fluctuating base rate based on the highest of (A) the prime rate announced from time to time by the lenders, (B) the rate announced by the Federal Reserve Bank of New York on that day as being the weighted average of the rates on overnight federal funds transactions arranged by federal funds brokers on the previous trading day plus 3.00% or (C) a daily LIBOR rate plus 2.75%, or (ii) LIBOR-based borrowings in one, two, three, or six month increments at the applicable LIBOR rate plus 1.25%.  A margin could have been added to the applicable interest rate based on the Company’s leverage ratio.  The interest rate per annum on outstanding borrowings as of December 31, 2012 ranged from 1.25% to 1.50%.
	Total outstanding borrowings under the Prior Credit Facility were $44.3 million at December 31, 2012 and are shown as long-term debt within the consolidated balance sheet.  The borrowings and repayments are presented on a gross basis within the Company’s consolidated statement of cash flows.
	The Prior Credit Facility contained customary affirmative and negative covenants for credit facilities of this type, including limitations on the Company and its subsidiaries with respect to indebtedness, liens, guaranties, loans and investments, dividends, mergers and acquisitions, dispositions of assets and transactions with affiliates.  The Company had to comply with certain financial covenants including a minimum interest coverage ratio, maximum leverage ratio, and minimum net worth, as defined within the Prior Credit Facility. The Prior Credit Facility also provided for customary events of default, including failure to pay principal or interest when due, failure to comply with covenants, the fact that any representation or warranty made by the Company was false or misleading in any material respect, certain insolvency or receivership events affecting the Company and its subsidiaries and a change in control of the Company.  If an event of default occurred, the lenders were under no further obligation to make loans or issue letters of credit.  Upon the occurrence of certain events of default, all outstanding obligations of the Company automatically would have become immediately due and payable, and other events of default would allow the lenders to declare all or any portion of the outstanding obligations of the Company to be immediately due and payable.
	Belgian Loan and Credit Facility
	On November 30, 2009, the Company entered into a Loan Agreement (the Belgian Loan) in order to help finance the expansion of the Company’s Feluy, Belgium facility.  The Belgian Loan provided total borrowings up to 6.0 million Euros, which could be drawn on in 120 thousand Euro bond installments at 25% of the total amount invested in the expansion until December 31, 2011.  Bond options not called by December 31, 2011 were obsolete and the loan was limited to the amount actually called by that date. The maturity date is seven years from the date of the first draw down which occurred on April 13, 2011 and the interest rate is 5.35%.  The Belgian Loan is guaranteed by a mortgage mandate on the Feluy site and is subject to customary reporting requirements, though no financial covenants exist.  The Company had 120 thousand Euros, or $0.2 million, of outstanding borrowings under the Belgian Loan as of December 31, 2013 and December 31, 2012, respectively.  No further bonds can be called on.
	The Company also maintains an unsecured Belgian credit facility totaling 2.0 million Euros. There are no financial covenants and the Company had no outstanding borrowings under the Belgian credit facility as of December 31, 2013 and 2012.  Bank guarantees of 1.0 million Euros and 1.2 million Euros were issued as of December 31, 2013 and December 31, 2012, respectively.
	United Kingdom Credit Facility
	The Company maintains a United Kingdom credit facility for the issuance of various letters of credit and guarantees totaling 0.6 million British Pounds Sterling.  Bank guarantees of 0.4 million British Pounds Sterling were issued as of December 31, 2013 and 2012, respectively.
	Japanese Loans
	Calgon Carbon Japan (CCJ) maintains a Term Loan Agreement (the Japanese Term Loan) and a Working Capital Loan Agreement (the Japanese Working Capital Loan).  The Company is jointly and severally liable as the guarantor of CCJ’s obligations and the Company permitted CCJ to grant a security interest and continuing lien in certain of its assets, including inventory and accounts receivable, to secure its obligations under both loan agreements.
	The Japanese Term Loan provided for a principal amount of 722.0 million Japanese Yen, or $7.7 million at inception.  This loan matured on March 31, 2013 and was repaid.  CCJ signed an agreement on May 10, 2013 to renew the Japanese Term Loan, which provides for borrowings up to 1.0 billion Japanese Yen, and bears interest based on the Uncollateralized Overnight Call Rate plus 0.6%, which totaled 0.7% per annum at December 31, 2013. This loan matures on May 10, 2017.  The borrowings and repayments are presented on a gross basis within the Company’s consolidated statements of cash flows.  At December 31, 2013, CCJ had 600 million Japanese Yen or $5.7 million outstanding and recorded as long-term debt within the consolidated balance sheet. At December 31, 2012, CCJ had 82.0 million Japanese Yen or $1.0 million outstanding and recorded as short-term debt within the consolidated balance sheet.
	The Japanese Working Capital Loan provides for borrowings up to 1.5 billion Japanese Yen, and bears interest based on the Short-term Prime Rate, which was 1.475% per annum at December 31, 2013.  This loan matured on March 31, 2013 and was renewed until March 31, 2014.  Borrowings and repayments under the Japanese Working Capital Loan have generally occurred in short term intervals, as needed, in order to ensure adequate liquidity while minimizing outstanding borrowings.  The borrowings and repayments are presented on a gross basis within the Company’s consolidated statements of cash flows.  At December 31, 2013, CCJ had 200 million Japanese Yen or $1.9 million outstanding and recorded as short-term debt within the consolidated balance sheet.  At December 31, 2012, CCJ had 1.6 billion Japanese Yen or $18.6 million outstanding and recorded as short-term debt within the consolidated balance sheet.
	Chinese Credit Facility
	The Company maintains an unsecured Chinese credit facility for working capital requirements totaling 10.0 million Renminbi (RMB) or $1.6 million that matures on July 19, 2014.  The interest rate per annum on outstanding borrowings as of December 31, 2013 was 5.32%.  Total outstanding borrowings under this facility were 1.7 million RMB or $0.3 million at December 31, 2013 and are shown as short-term debt within the consolidated balance sheet.  There were no borrowings under this facility at December 31, 2012.
	Maturities of Debt
	The Company intends to make principal payments on debt outstanding at December 31, 2013 of $2.2 million in 2014, $5.7 million in 2017, and $26.4 million in 2018.
	Interest Expense
	The Company’s interest expense for the years ended December 31, 2013, 2012, and 2011 totaled $0.5 million, $0.1 million, and zero, respectively. These amounts are net of interest costs capitalized of $0.4 million, $0.7 million, and $1.0 million for the years ended December 31, 2013, 2012, and 2011, respectively.

Fair_Value_Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2013
Fair Value Measurements	'
Fair Value Measurements	'
	8. Fair Value Measurements
	The following financial instrument assets (liabilities) are presented below at carrying amount, fair value, and classification within the fair value hierarchy (refer to Notes 7 and 16 for details relating to the borrowing arrangements and derivative instruments).  The only financial instruments measured at fair value on a recurring basis are derivative instruments and the acquisition earn-out liability:
		December 31, 2013
		Carrying			Fair Value
	(Dollars in thousands)	Amount			Total			Level 1		Level 2			Level 3
	Derivative assets	$	1,874		$	1,874		$	—	$	1,874		$	—
	Derivative liabilities	(423		)	(423		)	—		(423		)	—
	Acquisition earn-out liability	(850		)	(850		)	—		(850		)	—
	U.S. credit facility	(26,250		)	(26,250		)	—		(26,250		)	—
	China credit facility	(272		)	(272		)	—		(272		)	—
	Japanese working capital loan	(1,900		)	(1,900		)	—		(1,900		)	—
	Japanese term loan	(5,699		)	(5,699		)	—		(5,699		)	—
	Other loans	(165		)	(165		)	—		(165		)	—
		December 31, 2012
		Carrying			Fair Value
	(Dollars in thousands)	Amount			Total			Level 1		Level 2			Level 3
	Derivative assets	$	1,120		$	1,120		$	—	$	1,120		$	—
	Derivative liabilities	(646		)	(646		)	—		(646		)	—
	Acquisition earn-out liability	(1,300		)	(1,300		)	—		(1,300		)	—
	U.S. credit facility	(44,250		)	(44,250		)	—		(44,250		)	—
	Japanese working capital loan	(18,611		)	(18,611		)	—		(18,611		)	—
	Japanese term loan	(954		)	(954		)	—		(954		)	—
	Other loans	(158		)	(158		)	—		(158		)	—
	Cash and cash equivalents, accounts receivable, and accounts payable included in the consolidated balance sheets approximate fair value and are excluded from the tables above.  The recorded debt amounts are primarily based of the prime rate, LIBOR, or Fed Funds rate and, accordingly, the carrying value of these obligations equals fair value.  Fair value for the acquisition earn-out liability is based upon Level 2 inputs which are periodically re-evaluated for changes in future projections and the discount rate. This liability is recorded in accrued pension and other liabilities within the consolidated balance sheets.
	Assets and Liabilities Reported at Fair Value on a Nonrecurring Basis:
	As a result of the Company’s restructuring plan, as discussed in Note 2, long-lived assets with a carrying amount of $4.7 million were written down to their fair value of $0.7 million at December 31, 2012.  As a result, the Company recorded a charge of $4.0 million which was included in restructuring charges for the year ended December 31, 2012 within the Company’s consolidated statement of comprehensive income. These long-lived assets were valued using Level 3 inputs.

Commitments

Commitments	12 Months Ended
	Dec. 31, 2013
Commitments	'
Commitments	'
	9. Commitments
	The Company has entered into leases covering principally office, research and warehouse space, office equipment and vehicles. Future minimum rental payments required under all operating leases that have remaining noncancelable lease terms in excess of one year are $6.9 million in 2014, $4.5 million in 2015, $3.0 million in 2016, $2.3 million in 2017, $1.3 million  in 2018 and $1.6 million thereafter. Total rental expense on all operating leases was $7.6 million, $7.9 million, and $9.1 million for the years ended December 31, 2013, 2012, and 2011, respectively.
	The Company has in place long-term supply contracts for the purchase of raw materials, transportation, and information systems and services. The following table represents the total payments made for the purchases under the aforementioned supply contracts:
		December 31
	(Dollars in thousands)	2013		2012		2011
	Raw and other materials	$	40,170	$	30,802	$	33,953
	Transportation	9,794		9,731		8,782
	Information systems and services	2,746		4,505		3,846
	Total payments	$	52,710	$	45,038	$	46,581
	Future minimum purchase requirements under the terms of the aforementioned contracts are as follows:
		Due in
	(Dollars in thousands)	2014		2015		2016		2017		2018		Thereafter
	Raw and other materials	$	37,800	$	31,679	$	19,162	$	19,580	$	20,017	$	2,164
	Transportation	1,575		1,575		436		—		—		—
	Information systems and services	2,397		2,397		—		—		—		—
	Total contractual cash obligations	$	41,772	$	35,651	$	19,598	$	19,580	$	20,017	$	2,164

Shareholders_Equity

Shareholders' Equity	12 Months Ended
	Dec. 31, 2013
Shareholders' Equity	'
Shareholders' Equity	'
	10. Shareholders’ Equity
	The Company’s Board of Directors in 2000 authorized the purchase of up to 500,000 shares of the Company’s stock. As of November 19, 2012, 11,300 shares had been purchased under this stock buyback program.  This program was discontinued at that date.
	In November 2012, the Company’s Board of Directors authorized an accelerated share repurchase of Company common stock under a share repurchase program (the Program).  On November 20, 2012, the Company paid a purchase price of $50 million and initially received 3,276,002 shares upon inception of the Program. The actual number of shares that the Company repurchased under the Program was determined based on a discount to the arithmetic mean of the volume-weighted average prices (VWAP) of the Company’s common stock for each observation date over the course of applicable calculation period which ended on September 30, 2013.  The actual number of shares repurchased was 340,334 shares less than the number of shares previously delivered, and as a result, the Company sold back that many shares to the counterparty in the form of a private placement of unregistered securities. The Company’s outstanding common shares used to calculate earnings per share were reduced by the number of repurchased shares pursuant to the Program as they are delivered to the Company, and the $50 million purchase price was recorded as a reduction in stockholders’ equity upon its payment.  The Company increased its diluted shares outstanding to reflect the 340,334 shares that were sold back in the form of the private placement.
	In December 2013, the Company’s Board of Directors approved an increase in the overall value of shares authorized for repurchase under its Program to $150 million, excluding the November 2012 accelerated share repurchase.  Subsequently, the Company initiated an open market share repurchase program whereby 146,800 shares were repurchased in 2013 at an average price per share of $20.37. These repurchases were funded primarily from operating cash flows and the shares are initially held as treasury stock.
	The number of common shares repurchased in 2013 at the average purchase price was as follows:
		2013			2012
	Shares repurchased	146,800			3,276,002
	Shares sold back	(340,334		)	—
	Average purchase price	$	20.37	-1	$	15.26
	(1)Average purchase price does not account for the shares sold back.
	The Board of Directors adopted a Stockholder Rights Plan in February 2005 designated to guard against (1) coercive and abusive tactics that might be used in an attempt to gain control of the Company without paying all stockholders a fair price for their shares or (2) the accumulation of a substantial block of stock without offering to pay stockholders a fair control premium. The Rights Plan will not prevent takeovers, but is designed to preserve the Board’s bargaining power and flexibility to deal with third-party acquirers and to otherwise seek to maximize value for all stockholders. The Plan awards one right for each outstanding share of common stock held by stockholders of record on February 3, 2005 and thereafter. Each right entitles the holder to purchase from the Company one unit of one ten-thousandth of a share of a newly created series of preferred stock at a purchase price of $35 per unit. The rights will be exercisable only if a person or group acquires beneficial ownership of 10% or more of the Company’s outstanding common stock (15% or more in the case of certain institutional investors) or commences a tender or exchange offer upon consummation of which such person or group would beneficially own 10% or more of the Company’s common stock (Acquiring Person). If one of those events occurs, each holder of a right (with the exception of the Acquiring Person or group) will thereafter have the right to receive, upon exercise, common stock (or, in certain circumstances, cash, property or other of the Company’s securities) having a value equal to two times the exercise price of the right. The rights can be redeemed by the Board of Directors under certain circumstances, in which case the rights will not be exchangeable for shares.

Stock_Compensation_Plans

Stock Compensation Plans	12 Months Ended
	Dec. 31, 2013
Stock Compensation Plans	'
Stock Compensation Plans	'
	11. Stock Compensation Plans
	At December 31, 2013, the Company had one stock-based compensation plan that was adopted in 2008 and is described below. The former Employee and Non-Employee Directors’ Stock Option Plans were terminated and superceded by the 2008 Equity Incentive Plan; however, they both had stock-based awards outstanding as of December 31, 2013 and 2012.
	2008 Equity Incentive Plan
	In 2008, the Company adopted an equity incentive plan for eligible employees, service providers, and non-employee directors of the Company and its subsidiaries. The maximum number of shares available for grants and awards is an aggregate of 2,000,000 shares and the plan also includes a fixed sub-limit for the granting of incentive stock options which is 1,500,000 shares. The awards may be stock options, restricted stock units, performance units or other stock-based awards. Stock options may be “nonstatutory” or “incentive.” The exercise price for options and stock appreciation rights shall not be less than the fair market value on the date of grant, except if an incentive stock option is granted to a “10% employee,” as defined by the plan, then the option price may not be less than 110% of such fair market value. Options and stock appreciation rights may be exercisable commencing with the grant date, and are no longer exercisable after the expiration of seven or ten years from the grant date.
	Employee Stock Option Plan
	The Employee Stock Option Plan for officers and other key employees of the Company permitted grants of stock options, restricted shares or restricted performance shares for up to 8,238,640 shares of the Company’s common stock. Stock options may be “nonstatutory” or “incentive” with a purchase price of not less than 100% of the fair market value on the date of the grant. Stock appreciation rights were permitted to be granted at date of option grant or at any later date during the term of the option. “Incentive” stock options granted since 1986 become exercisable no less than six months after the date of grant and are no longer exercisable after the expiration of ten years from the date of the grant.
	Non-Employee Directors’ Stock Option Plan
	The 1993 Non-Employee Directors’ Stock Option Plan, as last amended in 2005, provided for an annual grant on the day following the Annual Meeting of Stockholders of stock options equal to a Black-Scholes calculated value of $25,000 per Director on the date of grant. The options vest and become exercisable six months after the date of the grant and, in general, expire ten years after the date of grant.
	Stock-Based Compensation Expense
	In accordance with the guidance within ASC 718 “Compensation — Stock Compensation”, compensation expense for stock options is recorded over the vesting period based on the fair value on the date of grant, as calculated by the Company using the Black-Scholes model and the assumptions listed below:
		Year Ended December 31
		2013		2012		2011
	Dividend yield	0.00%		0.00%		0.00%
	Expected volatility	31%		42-44%		46%
	Risk-free interest rates	0.78%		0.58-0.90%		2.19%
	Expected lives of options	4 years		4 years		4 years
	The Dividend yield is based on the latest annualized dividend rate and the current market price of the underlying common stock at the date of grant.
	Expected volatility is based on the historical volatility of the Company’s stock and the implied volatility calculated from traded options on the Company’s stock.
	The Risk-free interest rates are based on the U.S. Treasury strip rate for the expected life of the option.
	The Expected lives of options are primarily determined from historical stock option exercise data.  For the 2011 through 2013 grants of stock options, the Company used the simplified method for determining the expected life.  This method was used since the Company granted stock options to a different population of its employees, and decreased the term from 10 to 7 years.  As a result of these changes, the Company does not believe that the historical stock option exercise data provides a reasonable basis upon which to estimate the expected life for the 2011 through 2013 grants.
	Stock Option Activity
	The following tables show a summary of the status and activity of stock options for the year ended December 31, 2013:
	Employee:
							Weighted-
							Average
							Remaining
				Weighted-			Contractual		Aggregate
				Average			Term		Intrinsic Value
		Shares		Exercise Price			(in years)		(in thousands)
	Outstanding at beginning of year	753,063		$	12.78
	Granted	343,080		17.17
	Exercised	(356,375	)	11.23
	Forfeited	(19,751	)	15.98
	Expired	(17,280	)	9.08
	Outstanding at December 31, 2013	702,737		$	15.7		5.63		$	3,508
	Exercisable at December 31, 2013	258,662		$	14.27		4.97		$	1,661
	Expected to vest at December 31, 2013	702,737		$	15.7		5.63		$	3,508
	The weighted-average grant date fair value of employee stock options granted during the years ended December 31, 2013, 2012, and 2011 was $4.51 per share, $5.28 per share, and $5.47 per share or $1.5 million, $1.5 million, and $1.0 million, respectively.  The total grant date fair value of options vested during the years ended December 31, 2013, 2012, and 2011 was $5.32 per share, $5.86 per share, and $6.79 per share, or $1.0 million, $0.7 million, and $0.5 million, respectively.
	Non-Employee Directors:
							Weighted-
							Average
							Remaining
				Weighted-			Contractual		Aggregate
				Average			Term		Intrinsic Value
		Shares		Exercise Price			(in years)		(in thousands)
	Outstanding at beginning of year	74,222		$	6.45
	Granted	—		—
	Exercised	(12,300	)	5.08
	Forfeited	—		—
	Expired	—		—
	Outstanding at December 31, 2013	61,922		$	6.73		2.29		$	803
	Exercisable at December 31, 2013	61,922		$	6.73		2.29		$	803
	During the years ended December 31, 2013, 2012, and 2011 the total intrinsic value of stock options exercised (i.e., the difference between the market price at exercise and the price paid by the employee or non-employee directors to exercise the option) was $2.5 million, $1.9 million, and $2.7 million, respectively.  The total amount of cash received from the exercise of options was $4.1 million, $1.6 million, and $2.1 million, for the years ended December 31, 2013, 2012, and 2011, respectively.
	Stock Awards
	In accordance with guidance within ASC 718, compensation expense for nonvested stock awards is recorded over the vesting period based on the fair value at the date of grant.
	The grant date fair value of time vested restricted stock awards is the market price of the underlying common stock and is expensed over the vesting period of three years.
	Performance stock awards, based on Total Shareholder Return (TSR), vest subject to the satisfaction of a market condition, at the end of a three-year performance period.  The number of performance stock awards that are scheduled to vest is a function of TSR.  Under the terms of the TSR performance stock award, the Company’s actual TSR for the performance period is compared to the results of its peer companies for the same period with the Company’s relative position in the group determined by percentile rank.  The actual award payout is determined by multiplying the target award by the performance factor percentage based upon the Company’s percentile ranking and can vest at between zero and 200 percent of the target award.  The initial grant date fair value of the TSR performance stock is determined using a Monte Carlo simulation model.  The grant date fair value is expensed on a straight-line basis over the three-year performance period.  The following significant assumptions were used:
		Year Ended December 31
		2013		2012		2011
	Dividend yield	0.00%		0.00%		0.00%
	Expected volatility	37.80%		43.20%		65.40%
	Risk-free interest rates	0.34%		0.39%		1.15%
	Performance period	3 years		3 years		3 years
The following table shows the historical vesting of the TSR performance stock awards:
Year	TSR		Payout		Shares
	Performance
Vested	Period		Level		Issued
2011	2008-2010		97	%	16,781
2012	2009-2011		52	%	8,528
2013	2010-2012		0	%	—
In addition, the TSR performance stock award that was granted in 2011 vested and was awarded in February 2014 at approximately 93% of the target award, based on the Company’s satisfaction of performance goals during the preceding three-year period with 8,376 shares of common stock issued.
Performance stock awards, based on Return on Capital (ROC), vest subject to the satisfaction of this performance condition, at the end of a three-year performance period.  Under the terms of the ROC performance stock awards, the Company’s actual ROC for the performance period is compared to the target set, and the actual award payout is interpolated.  The ROC award can vest at between zero and 200 percent of the target award.  The grant date fair value of the ROC performance stock is the market price of the underlying common stock.  The fair value is expensed on a straight-line basis over the performance period when it is probable that the performance condition will be achieved.  No expense was recognized in 2013, 2012, or 2011 as it was not considered probable that the performance condition would be achieved.
The following table shows a summary of the status and activity of employee and non-employee directors’ nonvested stock awards for the year ended December 31, 2013:
			Weighted-					Weighted-				Weighted-
			Average					Average				Average
			Grant Date			ROC		Grant Date		TSR		Grant Date
	Restricted		Fair Value			Performance		Fair Value		Performance		Fair Value
	Stock Awards		(per share)			Stock Awards (a)		(per share)		Stock Awards(a)		(per share)
Nonvested at January 1, 2013	197,844		$	14.92		56,588		$	14.35	67,723		$	17.7
Granted	126,588		17.11			34,788		17.09		27,251		21.92
Vested	(94,005	)	15.28			—		—		—		—
Forfeited	(7,674	)	15.54			(32,988	)	14.62		(45,460	)	19.12
Nonvested at December 31, 2013	222,753		$	15.99		58,388		$	15.83	49,514		$	18.72
(a)         The number of shares shown for the performance stock awards is based on the target number of share awards.
The weighted-average grant date fair value of restricted stock awards granted during the years ended December 31, 2013, 2012, and 2011 was $17.11 per share, $14.56 per share, and $14.88 per share or $2.2 million, $2.0 million, and $1.4 million, respectively. The total fair value of restricted stock awards vested during the years ended December 31, 2013, 2012, and 2011 was $1.4 million, $1.9 million, and $1.6 million, respectively.
The weighted-average grant date fair value of ROC performance stock awards granted during the years ended December 31, 2013, 2012, and 2011 was $17.09 per share, $14.94 per share, and $13.57 per share or $0.6 million, $0.5 million and $0.3 million, respectively. There were no ROC performance stock awards that vested during the years ended December 31, 2013, 2012, and 2011, respectively.  In addition, the Company did not satisfy the performance condition for the ROC performance stock award that was granted in 2011 and vested in 2014.
The weighted-average grant date fair value of TSR performance stock awards granted during the years ended December 31, 2013, 2012, and 2011 was $21.92 per share, $15.31 per share, and $15.58 per share or $0.6 million, $0.5 million, and $0.3 million, respectively. The total fair value of TSR performance stock awards vested during the years ended December 31, 2013 and 2012 was zero and was $0.5 million for the year ended December 31, 2011.
Compensation expense related to all stock-based compensation totaled $3.1 million, $2.4 million, and $2.6 million for the years ended December 31, 2013, 2012, and 2011, respectively, and was recognized as a component of selling, general and administrative expense.  The related income tax benefit was $1.0 million, $0.9 million, and $0.9 million for the years ended December 31, 2013, 2012, and 2011, respectively.
As of December 31, 2013, there was $3.7 million of total future compensation cost related to nonvested share-based compensation arrangements and the weighted-average period over which this cost is expected to be recognized is approximately 2 years.

Pensions

Pensions	12 Months Ended
	Dec. 31, 2013
Pensions	'
Pensions	'
	12. Pensions
	The Company sponsors defined benefit pension plans covering certain union and non-union employees in the U.S. and Europe.  The Company uses a measurement date of December 31 for all of its pension plans.
	For U.S. plans, the following table provides a reconciliation of changes in the plans’ benefit obligations and fair value of assets over the two-year period ended December 31, 2013 and the funded status as of December 31 for both years:
	(Dollars in thousands)	2013			2012
	Change in Projected Benefit Obligations
	Projected benefit obligations at January 1	$	116,620		$	106,127
	Service cost	1,165			1,059
	Interest cost	4,423			4,796
	Actuarial (gain) loss	(14,471		)	12,083
	Benefits paid	(5,428		)	(3,343		)
	Settlement	—			(4,102		)
	Projected benefit obligations at December 31	102,309			116,620
	Change in Plan Assets
	Fair value of plan assets at January 1	88,184			82,970
	Actual return on plan assets	14,186			10,577
	Employer contributions	2,842			2,082
	Benefits paid	(5,428		)	(3,343		)
	Settlement	—			(4,102		)
	Fair value of plan assets at December 31	99,784			88,184
	Funded status at December 31	$	(2,525	)	$	(28,436	)
	Amounts recognized in the Balance Sheets:
	Noncurrent asset	$	2,470		$	—
	Current liability — Accrued benefit cost	(82		)	(82		)
	Noncurrent liability — Accrued benefit cost	(4,913		)	(28,354		)
	Net amount recognized	$	(2,525	)	$	(28,436	)
	Amounts recognized in Accumulated Other Comprehensive Income consist of:
	(Dollars in thousands)	2013			2012
	Accumulated prior service cost	$	89		$	164
	Accumulated net actuarial loss	20,752			46,267
	Net amount recognized, before tax effect	$	20,841		$	46,431
	The 2012 settlement was as a result of lump sum payments made to plan participants as of the period ended December 31, 2012.
	The accumulated benefit obligation at December 31, 2013 and 2012 was $50.2 million and $111.6 million, respectively.
	For U.S. plans, the assumptions used to determine benefit obligations are shown in the following table:
	Weighted average actuarial assumptions at December 31:	2013		2012
	Discount rate	4.88	%	3.92	%
	Rate of increase in compensation levels	3.5	%	4	%
	The following tables set forth the fair values of the Company’s U.S. pension plans assets as of December 31, 2013 and 2012:
		Fair Value Measurements at December 31, 2013
					Quoted
					Prices in
					Active
					Markets for			Significant			Significant
					Identical			Observable			Unobservable
	(Dollars in thousands)				Assets			Inputs			Inputs
	Asset Category	Total			(Level 1)			(Level 2)			(Level 3)
	Cash and Cash Equivalents	$	2,010		$	174		$	1,836		$	—
	Equity Securities
	Large Cap (a)	21,139			21,139			—			—
	Small/Mid Cap (b)	13,446			13,446			—			—
	Equities Blend (c)	715			715			—			—
	International Equity (d)	9,532			9,532			—			—
	Emerging Markets (e)	6.402			6,402			—			—
	Fixed Income Securities
	Corporate Bonds (f)	23,563			16,489			7,074			—
	Government Bonds (g)	11,490			10,820			670			—
	Mortgage/Asset Backed (h)	6,140			—			6,140
	Miscellaneous
	Commodities (i)	3,383			3,383
	Real Estate (j)	1,964			1,964
	Total	$	99,784		$	84,064		$	15,720		$	—
	(a)         This category consists of growth and value strategies investing primarily in the common stock of large capitalization companies located in the United States.  Growth oriented strategies seek companies within the Russell 1000 Growth Universe with above average earnings, growth, and revenue expectations.  Value oriented strategies seek companies within the Russell 1000 Value Universe that are undervalued relative to their intrinsic value.  These strategies are benchmarked against the Russell 1000 Growth and Value Indices, respectively.
	(b)         This category consists of growth and value strategies investing primarily in the common stock of mid and small capitalization companies located in the United States that are either undervalued relative to their intrinsic value or have above average growth and revenue expectations.  These strategies are benchmarked to the Russell 2500 Growth and Value Indices, respectively.
	(c)          This category invests in the common stock of primarily U.S. companies across the capitalization spectrum (Large, Mid, and Small Cap) that are undervalued relative to their intrinsic value or represent growth opportunities.  This strategy is benchmarked to the Russell 3000 Index.
(d)         This category consists of international equity securities represented by 21 major MSCI indices from Europe, Australia and Southeast Asia. This strategy is benchmarked to the MSCI EAFE Index.
(e)          This category invests in all types of capitalization companies operating in global emerging markets outside the United States. The strategy targets broad diversification across various economic sectors in 21 emerging economies.  This category is benchmarked to the MSCI Emerging Markets Index.
(f)           This category invests primarily in investment grade corporate securities.  This category is benchmarked to the Barclays Aggregate Bond Index.
(g)          This category includes securities and mutual funds which invest in a diversified portfolio of longer duration bonds.  The funds typically invest primarily in U.S. investment grade securities.  The portfolio has an average duration that normally varies within two years (plus or minus) of the benchmark.  This category is benchmarked to the Barclays Capital Long-Term Government/Credit Index.
(h)         This category invests primarily in mortgage-backed securities which covers the mortgage backed securities component of the Barclays US Aggregate Bond Index.  This category is benchmarked against the Barclays Mortgage-Backed Securities Index.
(i)             This fund invests in assets of commodity linked derivative instruments and fixed income securities.  The fund is benchmarked against the Dow Jones-UBS Commodity Index Total Return.
(j)            This fund normally invests at least 80% of its assets in equity related securities of real estate companies and other real estate securities.  Under normal circumstances, the fund invests in at least three different countries and at least 40% of the total assets are in foreign securities.  This strategy is benchmarked to the Lipper Global Real Estate Funds Average.
	Fair Value Measurements at December 31, 2012
				Quoted
				Prices in
				Active
				Markets for			Significant			Significant
				Identical			Observable			Unobservable
(Dollars in thousands)				Assets			Inputs			Inputs
Asset Category	Total			(Level 1)			(Level 2)			(Level 3)
Cash and Cash Equivalents	$	1,585		$	1,585		$	—		$	—
Equity Securities
All Cap (a)	9,126			9,126			—			—
Large Cap (b)	20,820			20,820			—			—
Small Cap Mutual Fund (c)	6,252			—			6,252			—
Microcap Mutual Fund (d)	5,852			5,852			—			—
International Mutual Fund (e)	15,884			15,884			—			—
Fixed Income Securities
Long Duration Mutual Fund (f)	24,370			24,370			—			—
Emerging Markets Debt Mutual Fund (g)	4,295			4,295			—			—
Total	$	88,184		$	81,932		$	6,252		$	—
(a)         This category invests in the common stock of primarily U.S. companies across the capitalization spectrum (Large, Mid, and Small Cap) that are undervalued relative to their intrinsic value.  The strategy is benchmarked to the Russell 3000 Value Index.
(b)         This category consists of Growth and Value strategies investing primarily in the common stock of large capitalization companies located in the United States.  Growth oriented strategies seek companies within the Russell 1000 Growth Universe with above average earnings, growth, and revenue expectations. Value oriented strategies seek companies within the Russell 1000 Value Universe that are undervalued relative to their intrinsic value. These strategies are benchmarked to the Russell 1000 Growth and Value Indices respectively.
(c)          This category invests primarily in small capitalization U.S. companies that are either undervalued relative to their intrinsic value or that have above average earnings growth and revenue expectations. The smaller cap orientation of the strategy requires the investment manager to be cognizant of liquidity and capital restraints, which are monitored by the investment team on an ongoing basis. This strategy is benchmarked to the Russell 2000 Index.
(d)         This category invests primarily in micro-capitalization U.S. companies that are undervalued relative to their intrinsic value. The smaller cap orientation of the strategy requires the investment managers to be cognizant of liquidity and capital restraints, which are monitored by the investment team on an ongoing basis. This strategy is benchmarked to the Russell Micro Cap Value Index.
(e)          This category invests in all types of capitalization companies operating in both developed and emerging markets outside the United States. The strategy targets broad diversification across various economic sectors and seeks to achieve lower overall portfolio volatility by investing with complimentary active managers with varying risk characteristics. Total combined exposure to emerging markets typically ranges from 10% to 20%, with a maximum restriction of 40%. This category is benchmarked to the MSCI EAFE Index and the MSCI All Country World Index ex U.S.
(f)           This category invests in a diversified portfolio of longer duration bonds.  The fund typically invests primarily in U.S. investment grade securities, but does have the ability to invest up to 10% in high yield (minimum credit rating of B), and up to 30% in non-U.S. denominated securities.  The portfolio has an average duration that normally varies within two years (plus or minus) of the benchmark.  This category is benchmarked to the Barclays Capital Long-Term Government/Credit Index.
(g)          This category invests primarily in local currency denominated government debt securities of countries within the Emerging Markets. The strategy is broadly diversified by country and will invest in locally denominated corporate securities. This strategy is benchmarked to the JP Morgan GBI-EM Global Diversified Index.
The Company’s investment strategy is to earn the highest possible long-term total rate of return while minimizing the associated risk to ensure the preservation of the plan assets for the provision of benefits to participants and their beneficiaries.  This is accomplished by managing a diversified portfolio of fund styles, asset types, risk characteristics and investment holdings.
At December 31, 2013 and 2012, the projected benefit obligations, accumulated benefit obligations, and fair value of plan assets for U.S. pension plans with a projected benefit obligation in excess of plan assets, and for pension plans with an accumulated benefit obligation in excess of plan assets was as follows:
	Projected Benefit Obligation						Accumulated Benefit
	Exceeds the Fair Value of						Obligation Exceeds the Fair
	Plan’s Assets						Value of Plan’s Asset
(Dollars in thousands)	2013			2012			2013			2012
Projected benefit obligation	$	53,699		$	116,620		$	53,699		$	116,620
Accumulated benefit obligation	$	50,188		$	111,625		$	50,188		$	111,625
Fair value of plan assets	$	48,704		$	88,184		$	48,704		$	88,184
Information about the expected cash flows for the U.S. pension plans follows:
	Pension Benefits
Year	(Thousands)
Employer contributions
2014	$	1,526
Benefit Payments
2014	$	5,869
2015	6,929
2016	6,960
2017	6,261
2018	6,770
2019 – 2023	36,676
For U.S. plans, the following table provides the components of net periodic pension costs of the plans for the years ended December 31, 2013, 2012, and 2011:
	Year Ended December 31
(Dollars in thousands)	2013			2012			2011
Service cost	$	1,165		$	1,059		$	1,022
Interest cost	4,423			4,796			4,942
Expected return on assets	(6,660		)	(6,166		)	(6,669		)
Prior service cost	74			74			75
Net amortization	3,519			3,430			1,728
Settlement	—			1,369			—
Net periodic pension cost	$	2,521		$	4,562		$	1,098
Other Changes in Plan Assets and Benefit Obligations Recognized in Other
Comprehensive Income (Loss)
	Year Ended December 31
(Dollars in thousands)	2013			2012
Current year actuarial (gain) loss	$	(21,997	)	$	7,672
Amortization of actuarial loss	(3,519		)	(3,430		)
Amortization of prior service cost	(74		)	(74		)
Settlement	—			(1,369		)
Total recognized in other comprehensive income (loss)	$	(25,590	)	$	2,799
Total recognized in net periodic pension cost and other comprehensive income (loss)	$	(23,069	)	$	7,361
The estimated amounts that will be amortized from accumulated other comprehensive income into net periodic pension cost in 2014 are as follows:
(Dollars in thousands)
Prior service cost	$	74
Net actuarial loss	950
Total at December 31	$	1,024
For U.S. plans, the assumptions used in the measurement of net periodic pension cost are shown in the following table:
	2013		2012		2011
Weighted average actuarial assumptions at December 31:
Discount rate	3.92	%	4.67	%	5.26	%
Expected annual return on plan assets	7.75	%	7.75	%	8	%
Rate of increase in compensation levels	4	%	4	%	4	%
The discount rates that the Company utilizes for its Qualified Plans to determine pension obligations are based on a review of long-term corporate bonds that receive one of the two highest ratings given by a recognized rating agency.  The expected rate of return on plan assets was determined by evaluating input from the Company’s investment consultant, including their review of asset class return expectations, as well as long-term inflation assumptions.  The Company also considered historical returns on asset classes, investment mix, and investment manager performance.  The expected long-term return on the U.S. Qualified Plans’ assets is based on an asset allocation assumption of approximately 52% equity securities, 43% fixed income securities, and 5% with other investments.  The Company also takes into account the effect on its projected returns from any reasonably likely changes in its asset portfolio when applicable.
For European plans, the following tables provide a reconciliation of changes in the plan’s benefit obligations and fair value of assets over the two-year period ended December 31, 2013 and the funded status as of December 31 of both years:
(Dollars in thousands)	2013			2012
Change in Projected Benefit Obligations
Projected benefit obligations at January 1	$	42,417		$	33,469
Service cost	314			148
Interest cost	1,511			1,640
Employee contributions	103			119
Actuarial loss	1,178			5,203
Benefits paid	(1,550		)	(1,254		)
Settlement	(1,249		)	—
Other	(1,689		)	1,689
Foreign currency exchange rate changes	1,332			1,403
Projected benefit obligations at December 31	42,367			42,417
Change in Plan Assets
Fair value of plan assets at January 1	28,177			24,414
Actual return on plan assets	1,395			2,053
Employer contributions	1,875			1,831
Employee contributions	103			119
Benefits paid	(1,550		)	(1,254		)
Settlement	(1,249		)	—
Foreign currency exchange rate changes	835			1,014
Fair value of plan assets at December 31	29,586			28,177
Funded Status at December 31	$	(12,781	)	$	(14,240	)
Amounts Recognized in the Balance Sheets:
Noncurrent asset	$	603		$	1,013
Current liability — Accrued benefit cost	(561		)	(590		)
Noncurrent liability — Accrued benefit cost	(12,823		)	(14,663		)
Net amount recognized	$	(12,781	)	$	(14,240	)
Amounts recognized in Accumulated Other Comprehensive Income consist of:
(Dollars in thousands)	2013			2012
Accumulated net actuarial loss	$	7,022		$	6,167
Net amount recognized, before tax effect	$	7,022		$	6,167
The 2013 settlement was as a result of the separation of an employee under the Belgian salaried plan.
The accumulated benefit obligation at the end of both 2013 and 2012 was $40.5 million and $40.5 million, respectively.
For European plans, the assumptions used to determine end of year benefit obligations are shown in the following table:
	2013		2012
Weighted average actuarial assumptions at December 31:
Discount rate	3.92	%	3.95	%
Rate of increase in compensation levels	3.5	%	3.5	%
The following tables set forth the fair values of the Company’s European pension plans assets as of December 31, 2013 and 2012:
	Fair Value Measurements at December 31, 2013
				Quoted
				Prices in
				Active
				Markets for			Significant			Significant
				Identical			Observable			Unobservable
(Dollars in thousands)				Assets			Inputs			Inputs
Asset Category	Total			(Level 1)			(Level 2)			(Level 3)
Cash and Cash Equivalents	$	542		$	542		$	—		$	—
Equity Securities
M&G PP Discretionary Fund (a)	4,498			4,498			—			—
Global Equity 60-40 Index (b)	5,667			5,667			—			—
Fixed Income Securities
Delta Lloyd Fixed Income (c)	4,207			—			—			4,207
Corporate Bonds (d)	4,779			4,779			—			—
Government Bonds (e)	6,384			6,384			—			—
Real Estate (f)	2,034			2,034			—			—
Insurance Reserves (g)	1,475			—			—			1,475
Total	$	29,586		$	23,904		$	—		$	5,682
	Fair Value Measurements at December 31, 2012
				Quoted
				Prices in
				Active
				Markets for			Significant			Significant
				Identical			Observable			Unobservable
(Dollars in thousands)				Assets			Inputs			Inputs
Asset Category	Total			(Level 1)			(Level 2)			(Level 3)
Cash and Cash Equivalents	$	993		$	993		$	—		$	—
Equity Securities
M&G PP Discretionary Fund (a)	2,103			2,103			—			—
Global Equity 60-40 Index (b)	4,604			4,604			—			—
Fixed Income Securities
Delta Lloyd Fixed Income (c)	4,058			—			—			4,058
Corporate Bonds (d)	10,067			10,067			—			—
Government Bonds (e)	3,061			3,061			—			—
Real Estate (f)	1,825			1,825			—			—
Insurance Reserves (g)	1,466			—			—			1,466
Total	$	28,177		$	22,653		$	—		$	5,524
(a)         This fund invests in a mix of UK and overseas equity shares, bonds, property and cash. The fund is actively managed against its benchmark of the CAPS Balanced Pooled Fund Median. A prudent approach of diversification by both location and investment type is employed by the fund and both active stock selection and asset allocation are used to add value.
(b)         This index fund invests 60% in the UK Equity Index Fund and 40% in overseas index funds. The overseas portion has a target allocation of 14% in North American funds, 14% in European funds (not including the UK), 7% in Japanese funds, and 5% in Pacific Basin funds (not including Japan).
(c)          This category invests in 6 year Fixed Income investments with Delta Lloyd.
(d)         This category invests in the M&G PP Discretionary Fund, the AAA Fixed interest - Over 15 Year Fund, and the M&G PP Long Dates Corporate Bond Fund. These funds, respectively, invest primarily in investment grade corporate bonds, as well as other debt instruments, including higher yielding corporate bonds, government debt, convertible and preferred stocks, money market instruments and equities; and in long-dated sterling denominated AAA-rated corporate bonds, as well as smaller holdings in gilts - both providing a fixed rate of interest.
(e)          This category invests mainly in long term gilts through the M&G PP Super Long Index Linked Fund and the M&G PP Discretionary Fund.
(f)           This category invests in the M&G UK Property Fund. The fund invests directly in commercial properties in the UK and is actively managed against its performance benchmark of the BNY Mellon CAPS Pooled Fund Property Median. The fund is well diversified investing in the retail, office, and industrial sectors of the market. A small portion of this category is also held in the M&G PP Discretionary Fund.
(g)          This category invests in individual insurance policies in the name of the individual plan members.
The Company’s Level 3 investments in the Delta Lloyd fixed income fund and insurance reserves were valued using significant unobservable inputs. Inputs to these valuations include characteristics and quantitative data relating to the assets and reserves, investment and insurance policy cost, position size, liquidity, current financial condition of the company/insurer and other relevant market data. The following table sets forth changes in fair value measurements using significant unobservable inputs during 2013 and 2012:
(Dollars in thousands)	Delta Lloyd			Insurance
	Fixed Income			Reserves
Balance at January 1, 2012	$	4,514		$	1,246
Purchases	—			194
Sales/Maturities	(502		)	(4		)
Foreign currency translation	46			30
Balance at December 31, 2012	4,058			1,466
Purchases	814			160
Sales/Maturities	(837		)	(211		)
Foreign currency translation	172			60
Balance at December 31, 2013	$	4,207		$	1,475
At December 31, 2013 and 2012, the projected benefit obligations, accumulated benefit obligations, and fair value of plan assets for European pension plans with a projected benefit obligation in excess of plan assets, and for pension plans with an accumulated benefit obligation in excess of plan assets was as follows:
	Projected Benefit Obligation						Accumulated Benefit
	Exceeds the Fair Value of						Obligation Exceeds the Fair
	Plan’s Assets						Value of Plan’s Asset
(Dollars in thousands)	2013			2012			2013			2012
Projected benefit obligation	$	31,485		$	33,022		$	31,485		$	33,022
Accumulated benefit obligation	$	29,568		$	31,123		$	29,568		$	31,123
Fair value of plan assets	$	18,101		$	17,769		$	18,101		$	17,769
Information about the expected cash flows for the European pension plans follows:
	Pension Benefits
Year	(Thousands)
Employer contributions
2014	$	2,126
Benefit Payments
2014	$	3,297
2015	1,602
2016	1,231
2017	1,527
2018	1,443
2019 – 2023	8,393
Total benefits expected to be paid include both the Company’s share of the benefit cost and the participants’ share of the cost, which is funded by participant contributions to the plan.
For European plans, the following table provides the components of net periodic pension costs of the plans for the years ended December 31, 2013, 2012 and 2011:
	Year Ended December 31
(Dollars in thousands)	2013			2012			2011
Service cost	$	314		$	148		$	155
Interest cost	1,511			1,640			1,947
Expected return on assets	(1,263		)	(1,232		)	(1,442		)
Net amortization	203			15			68
Settlement	279			—			—
Special termination benefits	—			—			200
Net periodic pension cost	$	1,044		$	571		$	928
Other Changes in Plan Assets and Benefit Obligations Recognized in Other
Comprehensive Income
	Year Ended December 31
(Dollars in thousands)	2013			2012
Current year actuarial loss	$	1,046		$	4,382
Amortization of actuarial loss	(203		)	(15		)
Settlement	(279		)	—
Foreign currency exchange	292			296
Total recognized in other comprehensive income	$	856		$	4,663
Total recognized in net periodic pension cost and other comprehensive income	$	1,900		$	5,234
The estimated amounts that will be amortized from accumulated other comprehensive income into net periodic pension cost in 2014 are as follows:
(Dollars in thousands)
Total net actuarial loss at December 31	$	245
For European plans, the assumptions used in the measurement of the net periodic pension cost are shown in the following table:
	2013		2012		2011
Weighted average actuarial assumptions at December 31:
Discount rate	3.99	%	5	%	5.35	%
Expected annual return on plan assets	4.91	%	4.92	%	6.03	%
Rate of increase in compensation levels	3.5	%	3.5	%	3.5	%
The expected rate of return on plan assets was determined by evaluating input from the Company’s investment consultant, including their review of asset class return expectations as well as long-term inflation assumptions.  Projected returns are based on broad equity and bond indices that the Company uses to benchmark its actual asset portfolio performance based on its portfolio mix of approximately 34% equity securities, 52% fixed income securities, and 14% other investments.  The Company also takes into account the effect on its projected returns from any reasonably likely changes in its asset portfolio when applicable.
The non-current portion of $17.7 million and $43.0 million at December 31, 2013 and 2012, respectively, for the U.S. and European pension liabilities is included in accrued pension and other liabilities.
The Company also sponsors a defined contribution plan for certain U.S. employees that permits employee contributions of up to 50% of eligible compensation in accordance with Internal Revenue Service guidance.  Under this defined contribution plan, the Company makes a fixed contribution of 3% of eligible employee compensation on a quarterly basis and matches contributions made by each participant in an amount equal to 50% of the employee contribution up to a maximum of 3% of employee compensation.  Employer matching and fixed contributions for non-represented employees vest immediately. Employer discretionary contributions vest after two years of service.  For each bargaining unit employee at the Catlettsburg, Kentucky facility who is a participant of the defined benefit pension plan and contributes to the defined contribution plan, the Company matches a maximum of $25.00 employee pre-tax contributions per month to the plan.  As of June 8, 2010, and continuing under the June 8, 2013 collective bargaining agreement, current employees have the option of remaining in the defined benefit plan or converting to a defined contribution plan.  The election to convert will freeze the defined benefit calculation as of such date and employees who elect to freeze their defined benefit will be eligible to receive a Company contribution to the defined contribution plan of $1.40 per actual hour worked as well as for other related hours paid but not worked.  The Company will then make additional lump sum contributions to employees of $5,000 per year that have converted on the next three anniversary dates of the voluntary conversion to the defined contribution plan.  As a result, employees that have converted will be excluded from the aforementioned $25.00 match.  For bargaining unit employees hired after June 8, 2010, the Company contributes $1.40 per actual hour worked, as well as for other related hours paid but not worked, for eligible employees.  Effective May 1, 2007, for bargaining unit employees at the Columbus, Ohio facility, the Company makes contributions to the USW 401(k) Plan of $1.15 per actual hour worked for eligible employees.  Effective August 1, 2011, for bargaining unit employees at the Neville Island, Pennsylvania facility, the Company began making contributions of $1.65 per actual hour worked to the defined contribution plan for eligible employees when their defined benefit pension plan was frozen.  Employer matching contributions for bargaining unit employees vest immediately. Total expenses related to the defined contribution plans were $2.5 million, $1.9 million, and $1.8 million for each of the years ended December 31, 2013, 2012, and 2011, respectively.
Other
Multi-Employer Plan
In addition to the aforementioned European plans, the Company participates in a multi-employer plan in Europe.  This multi-employer plan almost entirely relates to former employees of operations it has divested.  Benefits are distributed by the multi-employer plan.  In August 2012, the Company learned that the multi-employer plan had elected to reduce benefits to entitled parties.  Also in August 2012, the Company learned that the local Labor Court had issued a judgment where it concluded that an employer was required to compensate its pensioners for the shortfall if benefits had been reduced by the plan.  As a result, the Company has accrued a liability for the past shortfall to its former employees.  The Company cannot predict if future benefit payments to be made by the multi-employer plan will be reduced.  As of December 31, 2013 and 2012, respectively, the Company has a $0.6 million and $1.7 million liability recorded to account for the reduction of benefits.

Provision_for_Income_Taxes

Provision for Income Taxes	12 Months Ended
	Dec. 31, 2013
Provision for Income Taxes	'
Provision for Income Taxes	'
	13. Provision for Income Taxes
	The components of the provision for income taxes were as follows:
		Year Ended December 31
	(Dollars in thousands)	2013			2012			2011
	Current
	Federal	$	6,180		$	9,039		$	3,338
	State and local	1,739			526			462
	Foreign	8,632			4,056			12
		16,551			13,621			3,812
	Deferred
	Federal	5,950			(47		)	13,018		-1
	State and local	(248		)	178			597
	Foreign	(767		)	312			(261		)
		4,935			443			13,354
	Provision for income taxes	$	21,486		$	14,064		$	17,166
	(1)$5.5 million relates to the reversal of indirect benefits on uncertain tax benefits which lapsed due to the statute of limitations.
	Income before income tax provision includes income generated by operations outside the United States of $29.3 million, $10.4 million, and $11.8 million for 2013, 2012, and 2011, respectively.  No provision has been made for U.S. Federal, state, or additional foreign taxes related to approximately $77.4 million of undistributed earnings of foreign subsidiaries which have been indefinitely reinvested.  It is not practical to determine the deferred tax liability on these earnings.
	The differences between the U.S. federal statutory tax rate and the Company’s effective income tax rate are as follows:
		Year Ended December 31
		2013		2012		2011
	U.S. federal statutory rate	35	%	35	%	35	%
	State income taxes, net of federal income tax benefit	0.8		2		2.1
	Tax rate differential on foreign income	(1.5	)	(2.0	)	(1.0	)
	Nonrecurring adjustments related to sale of foreign subsidiary	(2.2	)	2.8		—
	Permanent tax differences	(1.4	)	(1.9	)	(1.0	)
	Valuation allowance	1.5		1.5		—
	Tax statute expiration	(0.6	)	(0.8	)	(5.8	)
	Change in uncertain tax positions	0.3		0.6		0.6
	Other — net	0.1		0.5		0.5
	Effective income tax rate	32	%	37.7	%	30.4	%
	The Company has the following gross operating loss carryforwards and tax credit carryforwards as of December 31, 2013:
		Amount
	Type	(Thousands)			Expiration Date
	Foreign tax credits	$	1,063		2017
	Capital loss carryforwards	770			2018
	State tax credits(2)	2,476			2018-2027
	Operating loss carryforwards — federal	746			2029
	Operating loss carryforwards — state(1)	20,023			2014 – 2033
	Operating loss carryforwards — foreign	3,465			2017, 2018 – None(3)
	(1)Of the total state operating loss-carryforwards, approximately 88% expire in 2020 or later.
	(2)Of the total state tax credit carryforwards, approximately 99% expire in 2023 or later.
	(3) Of the total foreign tax credit carryforwards, approximately 6% have no expiration.
	The components of deferred taxes consist of the following:
		December 31
	(Dollars in thousands)	2013			2012
	Deferred tax assets(1)
	Net operating loss and credit carryforwards(2)	$	5,548		$	5,263
	Accruals	11,198			10,957
	Inventories	12,271			8,636
	Pensions	4,725			15,892
	Valuation allowance	(988		)	(1,146		)
	Total deferred tax assets	32,754			39,602
	Deferred tax liabilities
	Property, plant and equipment	$	31,951		$	24,129
	Goodwill and other intangible assets	5,879			6,308
	U.S. liability on Belgian and German net deferred tax assets	1,248			669
	Total deferred tax liabilities	39,078			31,106
	Net deferred tax asset (liability)	$	(6,324	)	$	8,496
	(1)Uncertain tax liabilities of approximately $0.3 million and $0.2 million partially offset the net operating losses and credit carryforwards in 2013 and 2012, respectively.
	(2)Net indirect benefits on uncertain tax liabilities of approximately $1.0 million are included in the U.S. net operating loss and credit carryforwards in each 2013and 2012.
	A valuation allowance is established when it is more likely than not that a portion of the deferred tax assets will not be realized.  The valuation allowance is adjusted based on the changing facts and circumstances, such as the expected expiration of an operating loss carryforward.  The Company’s valuation allowance as of December 31, 2013 is $1.0 million and is as a result of domestic capital loss carryforwards and state tax credits.  The Company’s valuation allowance as of December 31, 2012 of $1.1 million pertained to an uncertainty related to the realization of foreign net operating loss carryforwards.
	The Company has classified uncertain tax positions as non-current income tax liabilities unless the amount is expected to be paid within one year.  The following is a reconciliation of the unrecognized income tax benefits:
	(Dollars in thousands)	2013			2012			2011
Balance at January 1	$	4,141		$	4,078		$	11,215
Gross increases for tax positions of prior years	—			53			252
Gross decreases for tax positions of prior years	(438		)	—			(84		)
Gross increases for tax positions of current year	122			647			562
Lapse of statute of limitations	(390		)	(637		)	(7,867		)
Balance at December 31	$	3,435		$	4,141		$	4,078
As of December 31, 2013, approximately $2.4 million of the $3.4 million, and as of December 31, 2012, approximately $3.0 million of the $4.1 million, of unrecognized tax benefits would reduce the Company’s effective tax rate if recognized.
The Company recognizes accrued interest and penalties related to unrecognized tax benefits in income tax expense. In 2013, the Company reversed an immaterial amount due to the expiration of the statute of limitations.  In 2012, the Company reversed approximately $0.1 million of interest and penalties due to the expiration of the statute of limitations.  As of December 31, 2013 and 2012, the amount accrued for the payment of interest and penalties is approximately $0.9 million and $0.9 million, respectively.
Total uncertain tax positions recorded in accrued pension and other liabilities were approximately $4.1 million and $4.8 million for the year ended December 31, 2013 and 2012, respectively.
At this time, the Company believes that it is reasonably possible that approximately $0.4 million of the estimated unrecognized tax benefits as of December 31, 2013 will be recognized within the next twelve months based on the expiration of statutory review periods all of which will impact the effective tax rate.
On September 13, 2013, Treasury and the Internal Revenue Service issued final regulations regarding the deduction and capitalization of expenditures related to tangible property. The final regulations under Internal Revenue Code Sections 162, 167 and 263(a) apply to amounts paid to acquire, produce, or improve tangible property as well as dispositions of such property and are generally effective for tax years beginning on or after January 1, 2014.  The Company has evaluated these regulations and determined they will not have a material impact on its consolidated results of operations, cash flows or financial position.
As of December 31, 2013, the following tax years remain subject to examination for the major jurisdictions where the Company conducts business:
Jurisdiction	Years
United States	2003, 2005, 2008, 2010 – 2013
Kentucky	2009 – 2013
Pennsylvania	2010 – 2013
Belgium	2011 – 2013
Canada	2009 – 2013
Germany	2010 – 2013
United Kingdom	2010 – 2013
Japan	2008 – 2013

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Income (Loss)	12 Months Ended
	Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss)	'
Accumulated Other Comprehensive Income (Loss)	'
	14. Accumulated Other Comprehensive Income (Loss)
		Foreign									Total Accumulated
		Currency			Pension						Other
		Translation			Benefit						Comprehensive
	(Dollars in thousands)	Adjustments			Adjustments			Derivatives			Income (Loss)
	Balance, January 1, 2013, net of tax	$	17,098		$	(33,718	)	$	93		$	(16,527	)
	Other comprehensive income before reclassifications	727			12,913			689			14,329
	Amounts reclassified from other comprehensive income (loss)	(1,032		)	2,355			(265		)	1,058
	Net current period other comprehensive income (loss)	(305		)	15,268			424			15,387
	Balance, December 31, 2013, net of tax	$	16,793		$	(18,450	)	$	517		$	(1,140	)
	Details about Accumulated	Amount Reclassified from Accumulated			Affected Line Item in the Statement
	Other Comprehensive Income Components	Other Comprehensive Income(1)			where Net Income is Presented
	Derivatives:
	Foreign Exchange Contracts	$	1,018		Cost of products sold (excluding depreciation)
	Natural Gas Contracts	(555		)	Cost of products sold (excluding depreciation)
		463			Total before tax
		(198		)	Tax (expense) or benefit
		$	265		Net of tax
	Pension Benefit Adjustments:
	Prior-service costs	$	(74	)	-2
	Actuarial losses	(3,722		)	-2
		(3,796		)	Total before tax
		1,441			Tax (expense) or benefit
		$	(2,355	)	Net of tax
	Foreign Currency Translation Adjustments:
	Sale of foreign subsidiary (Note 2)	$	1,032		Restructuring (3)
		1,032			Total before tax
		—			Tax (expense) or benefit
		$	1,032		Net of tax
	Total reclassifications for the period ended December 31, 2013	$	(1,058	)	Net of tax
	(1)         Amounts in parentheses indicate debits to income/loss.
	(2)         These accumulated other comprehensive income (loss) components are included in the computation of net periodic pension cost.
	(3)         The adjustment for 2013 relates to the Company’s sale of its activated carbon manufacturing facility in Datong, China.
	Foreign currency translation adjustments exclude income tax expense (benefit) for the earnings of the Company’s non-U.S. subsidiaries as management believes these earnings will be reinvested for an indefinite period of time.  Determination of the amount of unrecognized deferred U.S. income tax liability on these unremitted earnings is not practicable.
	The income tax benefits associated with ASC 715 “Compensation — Retirement Benefits” included in accumulated other comprehensive loss was $9.7 million, $20.0 million, and $17.4 million at December 31, 2013, 2012, and 2011, respectively.  The income tax (expense) benefit associated with the Company’s derivatives included in accumulated other comprehensive loss was $(0.3) million, $(29) thousand, and $0.6 million at December 31, 2013, 2012, and 2011, respectively.
	The income tax (expense) benefit associated with foreign currency translation included in other comprehensive loss was $0.3 million, $29 thousand, and $0.1 million at December 31, 2013, 2012, and 2011, respectively.  The income tax (expense) benefits associated with the Company’s pension benefits included in other comprehensive loss was $(9.8) million, $2.5 million, and $5.7 million at December 31, 2013, 2012, and 2011, respectively. The income tax (expense) benefits associated with the Company’s derivatives included in other comprehensive loss was $(0.4) million, $(0.6) million, and $(0.4) million at December 31, 2013, 2012, and 2011, respectively.

Supplemental_Cash_Flow_Informa

Supplemental Cash Flow Information	12 Months Ended
	Dec. 31, 2013
Supplemental Cash Flow Information	'
Supplemental Cash Flow Information	'
	15. Supplemental Cash Flow Information
	Cash paid for interest for the years ended December 31, 2013, 2012, and 2011 was $0.8 million, $0.6 million, and $0.8 million, respectively.  Income taxes paid, net of refunds, for the years ended December 31, 2013, 2012, and 2011 were $16.4 million, $12.2 million, and $11.1 million, respectively.
	The Company has reflected $1.0 million and $0.7 million of its capital expenditures as non-cash decreases in accounts payable and accrued liabilities for the years ended December 31, 2013 and 2012, respectively.

Derivative_Instruments

Derivative Instruments	12 Months Ended
	Dec. 31, 2013
Derivative Instruments	'
Derivative Instruments	'
	16. Derivative Instruments
	The Company’s corporate and foreign subsidiaries use foreign currency forward exchange contracts and foreign exchange option contracts to limit the exposure of exchange rate fluctuations on certain foreign currency receivables, payables, and other known and forecasted transactional exposures for periods consistent with the expected cash flow of the underlying transactions.  The foreign currency forward exchange and foreign exchange option contracts generally mature within eighteen months and are designed to limit exposure to exchange rate fluctuations.  The Company also uses cash flow hedges to limit the exposure to changes in natural gas prices.  The natural gas forward contracts generally mature within one to eighteen months.  The Company enters into derivative financial instruments with high credit quality counterparties and diversifies its positions among such counterparties.  In addition, various master netting arrangements are in place with counterparties to facilitate settlement of gains and losses on these contracts.  The Company does not currently offset derivative positions on these contracts.  The Company accounts for its derivative instruments under Accounting Standards Codification (ASC) 815 “Derivatives and Hedging.”
	The fair value of outstanding derivative contracts recorded as assets in the accompanying consolidated balance sheets were as follows:
	Asset Derivatives
				December 31,
	(Dollars in thousands)	Balance Sheet Locations		2013			2012
	Derivatives designated as hedging instruments under ASC 815:
	Foreign exchange contracts	Other current assets		$	850		$	545
	Natural Gas	Other current assets		189			—
	Foreign exchange contracts	Other assets		94			142
	Natural Gas	Other assets		13			—
	Total derivatives designated as hedging instruments under ASC 815			1,146			687
	Derivatives not designated as hedging instruments under ASC 815:
	Foreign exchange contracts	Other current assets		728			433
	Total asset derivatives			$	1,874		$	1,120
	The fair value of outstanding derivative contracts recorded as liabilities in the accompanying consolidated balance sheets were as follows:
	Liability Derivatives
				December 31,
	(Dollars in thousands)	Balance Sheet Locations		2013			2012
	Derivatives designated as hedging instruments under ASC 815:
	Foreign exchange contracts	Accounts payable and accrued liabilities		$	391		$	191
	Natural gas contracts	Accounts payable and accrued liabilities		—			360
	Foreign exchange contracts	Accrued pension and other liabilities		27			61
	Total derivatives designated as hedging instruments under ASC 815			418			612
	Derivatives not designated as hedging instruments under ASC 815:
	Foreign exchange contracts	Accounts payable and accrued liabilities		5			34
	Total liability derivatives			$	423		$	646
	In accordance with ASC 820, “Fair Value Measurements and Disclosures,” the fair value of the Company’s foreign exchange forward contracts, foreign exchange option contracts, and natural gas forward contracts is determined using Level 2 inputs, which are defined as observable inputs.  The inputs used are from market sources that aggregate data based upon market transactions.
	Cash Flow Hedges
	For derivative instruments that are designated and qualify as cash flow hedges, the effective portion of the gain or loss on the derivative is reported as a component of other comprehensive income (loss) (OCI) and reclassified into earnings in the same period or periods during which the hedged transaction affects earnings.  Gains and losses on the derivative representing either hedge ineffectiveness or hedge components excluded from the assessment of effectiveness are recognized in current earnings and were not material for the years ended December 31, 2013, 2012 and 2011, respectively.
	The following table provides details on the changes in accumulated OCI relating to derivative assets and liabilities that qualified for cash flow hedge accounting.
		December 31
	(Dollars in thousands)	2013			2012
	Accumulated OCI derivative gain or (loss) at January 1	$	74		$	(1,359	)
	Effective portion of changes in fair value	1,461			338
	Reclassifications from accumulated OCI derivative to earnings	(463		)	1,065
	Foreign currency translation	(198		)	30
	Accumulated OCI derivative gain at December 31	$	874		$	74
	Derivatives in ASC 815 Cash Flow Hedging Relationships:
		Amount of Gain or (Loss)
		Recognized in OCI on Derivatives
		(Effective Portion)
		December 31,
	(Dollars in thousands)	2013			2012			2011
	Foreign Exchange Contracts	$	1,326		$	612		$	(22	)
	Natural Gas Contracts	135			(274		)	(1,247		)
	Total	$	1,461		$	338		$	(1,269	)
	Derivatives in ASC 815 Cash Flow Hedging Relationships:
				Amount of Gain or (Loss)
				Reclassified from Accumulated
		Location of Gain or		OCI in Income (Effective Portion)
		(Loss) Recognized in		December 31,
	(Dollars in thousands)	Income on Derivatives		2013			2012			2011
	Foreign Exchange Contracts	Cost of products sold (excluding depreciation)		$	1,018		$	530		$	(290	)
	Currency Swap	Interest expense		—			—			—
	Natural Gas Contracts	Cost of products sold (excluding depreciation)		(555		)	(1,595		)	(2,071		)
	Total			$	463		$	(1,065	)	$	(2,361	)
	Derivatives in ASC 815 Cash Flow Hedging Relationships:
				Amount of Gain or (Loss)
				Recognized in Income on
				Derivatives (Ineffective
				Portion and Amount
				Excluded from
	Location of		Effectiveness Testing)
	Gain or (Loss) Recognized in		December 31,
(Dollars in thousands)	Income on Derivatives		2013			2012			2011
Foreign Exchange Contracts	Other expense — net		$	198		$	(30	)	$	(75	)
Total			$	198		$	(30	)	$	(75	)
Assuming market rates remain constant with the rates at December 31, 2013, a gain of $0.5 million is expected to be recognized in earnings over the next 12 months.
The Company had the following outstanding derivative contracts that were entered into to hedge forecasted transactions:
	December 31,
(in thousands except for mmbtu)	2013			2012			2011
Natural gas contracts (mmbtu)	525,000			235,000			700,000
Foreign exchange contracts	$	44,110		$	42,399		$	35,304
Other
The Company has also entered into certain derivatives to minimize its exposure of exchange rate fluctuations on certain foreign currency receivables, payables, and other known and forecasted transactional exposures.  The Company has not qualified these contracts for hedge accounting treatment and therefore, the fair value gains and losses on these contracts are recorded in earnings as follows:
Derivatives Not Designated as Hedging Instruments Under ASC 815:
			Amount of Gain or (Loss)
			Recognized in Income on
	Location of		Derivatives
	Gain or (Loss) Recognized in		December 31,
(Dollars in thousands)	Income on Derivatives		2013			2012			2011
Foreign Exchange Contracts (1)	Other expense - net		$	1,256		$	963		$	(189	)
Total			$	1,256		$	963		$	(189	)
(1)As of December 31, 2013, 2012,and 2011, these foreign exchange contracts were entered into and settled during the respective periods.
The use of derivatives exposes the Company to the risk that a counter party may default on a derivative contract.  The aggregate fair value of the Company’s derivative instruments in asset positions as of December 31, 2013 was $1.9 million, representing the maximum loss that the Company would recognize at that date if all counterparties failed to perform as contracted.  The Company has entered into master agreements with counterparties for its foreign exchange contracts that may allow for netting of exposures in the event of default or termination of the counterparty agreement due to breach of contract.  The Company does not net its derivative positions by counterparty for purposes of balance sheet presentation and disclosure.
	December 31, 2013						December 31, 2012
	Fair			Fair Value			Fair Value			Fair Value
	Value of			of			of Assets			of Liabilities
	Assets			Liabilities
Gross derivative amounts recognized in the balance sheet	$	1,874		$	423		$	1,120		$	646
Gross derivative amounts not offset in the balance sheet that are eligible for offsetting
Derivatives — foreign currency contracts	(423		)	(423		)	(286		)	(286		)
Net amount	$	1,451		$	—		$	834		$	360
Management’s policy for managing foreign currency risk is to use derivatives to hedge up to 75% of the forecasted intercompany sales to its European, Canadian, and Japanese subsidiaries.  The hedges involving foreign currency derivative instruments do not span a period greater than eighteen months from the contract inception date.  Management uses various hedging instruments including, but not limited to foreign currency forward contracts, foreign currency option contracts and foreign currency swaps.  Management’s policy for managing natural gas exposure is to use derivatives to hedge from zero to 75% of the forecasted natural gas requirements.  These cash flow hedges currently span up to eighteen months from the contract inception date. Hedge effectiveness is measured on a quarterly basis and any portion of ineffectiveness is recorded directly to the Company’s earnings.

Contingencies

Contingencies	12 Months Ended
	Dec. 31, 2013
Contingencies	'
Contingencies	'
	17. Contingencies
	For Your Ease Only (FYEO).  In 2002, the Company was sued by FYEO.  The case arises out of the Company’s patent covering anti-tarnish jewelry boxes, U.S. Patent No. 6,412,628 (the ‘628 Patent).  FYEO and the Company were competitors in the sale of jewelry boxes through a common retailer.  In 2002, the Company asserted to the retailer that FYEO’s jewelry box infringed the ‘628 Patent.  FYEO filed suit in the U.S. District Court for the Northern District of Illinois for a declaration that the patent was invalid and not infringed, and claiming that the Company had tortuously interfered with its relationship with the retailer.  The Company defended the suit until December 2003, when the case was stayed pending a re-examination of the ‘628 Patent in the Patent and Trademark Office.  That patent was re-examined and certain claims of that patent were rejected by order dated February 25, 2008.  The Company appealed, but the re-examination was affirmed by the Court of Appeals for the Federal Circuit.  The Patent Trademark Office issued a re-examination certificate on August 25, 2009.  The stay on litigation was lifted.  In addition, in 2007, while litigation between FYEO and the Company was stayed, FYEO obtained a default judgment against Mark Schneider and Product Concepts Company (which had a prior contractual relationship with the Company in connection with the jewelry box business).  FYEO attempted to collect their default judgment against the Company. Thereafter, FYEO’s claim on the collection of the default judgment went to trial in 2009 and was rejected, in a determination that the Company had no continuing obligation to Schneider or Product Concepts. FYEO appealed that ruling, to the Seventh Circuit Court of Appeals. The Company and FYEO entered into a binding term sheet to settle these cases on December 31, 2010 for $4.3 million.  The Company recognized litigation expense of $3.3 million for the year ended December 31, 2010. These litigation contingencies are recorded in the Consumer segment. Under the terms of the settlement, the Company paid FYEO in January 2011.  The Company has liquidated its existing inventory and exited the anti-tarnish jewelry organizer business as of December 31, 2011 in accordance with the agreement.
	Waterlink.  In conjunction with the February 2004 purchase of substantially all of Waterlink Inc.’s (Waterlink) operating assets and the stock of Waterlink’s U.K. subsidiary, environmental studies were performed on Waterlink’s Columbus, Ohio property by environmental consulting firms that provided an identification and characterization of certain areas of contamination.  In addition, these firms identified alternative methods of remediating the property and prepared cost evaluations of the various alternatives.  The Company concluded from the information in the studies that a loss at this property is probable and recorded the liability. At December 31, 2013 the balance recorded as a component of accounts payable and accrued liabilities and accrued pension and other liabilities was $0.4 million and $0.4 million, respectively.  At December 31, 2012 the balance recorded as a component of accrued pension and other liabilities was $1.4 million.  Liability estimates are based on an evaluation of, among other factors, currently available facts, existing technology, presently enacted laws and regulations, and the remediation experience of experts in groundwater remediation.  It is possible that a further change in the estimate of this obligation will occur as remediation progresses. The Company incurred $0.6 million, $0.6 million, and $0.7 million of environmental remediation costs for the years ended December 31, 2013, 2012, and 2011, respectively. A $1.3 million reduction of the liability was recorded in the Activated Carbon and Service segment for the year ended December 31, 2011 related to a change in the estimate of the obligation that occurred during the year.  The change in estimate was as a result of a more definitive environmental assessment and review of the current technology available to the Company to remediate the property.  Remediation activities are ongoing and are currently expected to be completed by the end of 2016.
	Carbon Imports
	General Anti-Dumping Background:  On March 8, 2006, the Company and another U.S. producer of activated carbon (collectively the “Petitioners”) formally requested that the United States Department of Commerce investigate unfair pricing of certain thermally activated carbon imported from the People’s Republic of China.
	On March 2, 2007, the Commerce Department published its final determination (subsequently amended) finding that imports of the subject merchandise from China were being unfairly priced, or dumped, and that anti-dumping duties should be imposed to offset the amount of the unfair pricing.  Following a finding by the U.S. International Trade Commission that the domestic industry was injured by unfairly traded imports of activated carbon from China, an anti-dumping order imposing these tariffs was issued by the U.S. Department of Commerce and was published in the Federal Register on April 27, 2007.  All imports from China remain subject to the order.  Importers of subject activated carbon from China are required to make cash deposits of estimated anti-dumping duties at the time the goods are entered into the United States’ customs territory.  Final assessment of duties and duty deposits are subject to revision based on annual retrospective reviews conducted by the Commerce Department.
	The Company is a domestic producer, exporter from China (through its wholly-owned subsidiary Calgon Carbon (Tianjin) Co., Ltd.), and a U.S. importer of the activated carbon that is subject to the anti-dumping order.  As such, the Company’s involvement in the Commerce Department’s proceedings is both as a domestic producer (a “petitioner”) and as a foreign exporter (a “respondent”).
	The Company’s role as an importer, which has in the past (and may in the future) required it to pay anti-dumping duties, results in a contingent liability related to the final amount of tariffs that are ultimately assessed on the imported product following the Commerce Department’s annual review of relevant shipments and calculation of the anti-dumping duties due.  The amount of estimated anti-dumping tariffs payable on goods imported into the United States is subject to review and retroactive adjustment based on the actual amount of dumping that is found on entries made during a given annual period.  As a result of proceedings before the Commerce Department that concluded in November 2013, the Company is currently required to post a duty of $0.073 per pound when importing activated carbon from Calgon Carbon (Tianjin) into the United States.  As noted above, however, the Company’s ultimate assessment rate and future cash deposit rate on such imports could change in the future, as a result of on-going proceedings before the Commerce Department.
	As part of its standard process, the Commerce Department conducts annual reviews of sales made to the first unaffiliated U.S. customer, typically over the prior 12-month period.  These reviews will be conducted for at least five years subsequent to a determination in February 2013 finding that the anti-dumping duty order should remain in effect, and can result in changes to the anti-dumping tariff rate (either increasing or reducing the rate) applicable to any foreign exporter.  Revision of tariff rates has two effects.  First, it will alter the actual amount of tariffs that U.S. Customs and Border Protection (“Customs”) will collect for the period reviewed, by either collecting additional duties above those deposited with Customs by the importer at the time of entry or refunding a portion of the duties deposited at the time of importation to reflect a decline in the margin of dumping.  If the actual amount of tariffs owed increases, Customs will require the U.S. importer to pay the difference, plus interest.  Conversely, if the tariff rate decreases, any difference will be refunded by Customs to the U.S. importer with interest.  Second, the revised rate becomes the cash deposit rate applied to future entries, and can either increase or decrease the amount of duty deposits an importer will be required to post at the time of importation.
	There have been six periods of review since the tariffs began. Periods of Review I and II related to the periods that ended on March 31, 2008 and 2009, respectively, and are final and not subject to further review or appeal.
	Period of Review III:  On April 1, 2010, the Commerce Department published a formal notice allowing parties to request a third annual administrative review of the anti-dumping duty order covering the period April 1, 2009 through March 31, 2010 (“POR III”).  On October 31, 2011, the Commerce Department published the results of its review of POR III.  Based on the POR III results, the Company’s ongoing duty deposit rate was adjusted to zero.  The Company recorded a receivable of $1.1 million reflecting expected refunds for duty deposits made during POR III as a result of the announced decrease in the POR III assessment rate.  The Commerce Department continued to assign cooperative respondents involved in POR III a deposit rate of $0.127 per pound.  In early December 2011, several separate rate respondents appealed the Commerce Department’s final results of POR III.  On August 15, 2013 the Court of International Trade (the Court) issued its opinion in the appeal of the POR III review results.  The Court remanded the case back to the Commerce Department to reconsider certain surrogate values selected by the Department to value raw materials consumed by the respondents to produce steam activated carbon in China.  The Court also instructed the Department to reconsider the separate rate applied to the non-responding companies and the use of per-unit rates for one respondent.
	On January 9, 2014, the Commerce Department filed its remand redetermination with the U.S. Court of International Trade.  In its redetermination, the Commerce Department continued to calculate a zero duty for imports of steam activated carbon entered into the United States by the Company during POR III.  In addition, the Commerce Department revised its earlier determination and assigned a zero margin as a separate rate to several Chinese producers/exporters of steam activated carbon to the United States that were not subjected to an individual investigation.  Those separate rate exporters had previously been assigned a margin of approximately $0.127 per pound.  The Company plans to contest this aspect of the Commerce Department’s redetermination and will be submitting comments to the Court of International Trade in that regard.  A decision from the Court addressing the Commerce Department’s redetermination is expected in the third or fourth quarter of 2014.
	Period of Review IV:  On April 1, 2011, the Commerce Department published a formal notice allowing parties to request a fourth annual administrative review of the anti-dumping duty order covering the period April 1, 2010 through March 31, 2011 (“POR IV”).  On November 9, 2012, the Commerce Department published the final results of its review of POR IV.  Specifically, the Commerce Department calculated anti-dumping margins for the mandatory respondents it examined ranging from $0.20 per pound (Jacobi Carbons AB and its affiliates) to $0.96 per pound (Ningxia Guanghua Cherishmet Activated Carbon Co., Ltd. and its affiliates), and it calculated an anti-dumping margin of $0.47 per pound for the cooperative, separate rate respondents whose shipments of activated carbon to the United States were not individually reviewed.  The Commerce Department also calculated a zero anti-dumping margin for Datong Juqiang Activated Carbon Co., Ltd.  The Company, as a Chinese exporter and a U.S. importer, elected not to participate as a respondent in this administrative review.  By not participating as a respondent in the review, the Company’s tariff deposits made at a rate of 14.51% during POR IV became final and are not subject to further adjustment.  The Company’s ongoing deposit rate continued to be zero, as a result of the company-specific rate calculated in POR III.  Appeals challenging the Commerce Department’s final results for POR IV were commenced before the U.S. Court of International Trade by Jacobi Carbons AB, Ningxia Guanghua Cherishment Activated Carbon Co., Ltd. and its affiliates; Tangshan Solid Carbon Co., Ltd.; Carbon Activated Corporation and Car Go Worldwide, Inc.; and Shanxi Industry Technology Trading Co., Ltd.  The Company expects a decision from the Court on these appeals during the first quarter of 2014.  Irrespective of whether the Court directs further analysis by the Commerce Department or affirms the agency’s determination, the Company expects that this litigation will not directly impact its operations.
	Period of Review V: On April 2, 2012, the Commerce Department published a formal notice allowing parties to request a fifth annual administrative review of the anti-dumping duty order covering the period April 1, 2011 through March 31, 2012 (“POR V”).  On November 26, 2013, the Commerce Department published the final results of its review of POR V.  The Commerce Department calculated final antidumping duty margins for the two mandatory respondents, Jacobi Carbons AB and Ningxia Huahui Activated Carbon Co., of $0.01/lb. and $0.18/lb., respectively.  Based on these antidumping margins, the Commerce Department calculated a margin of $0.07/lb. for cooperative exporters that were not individually reviewed but were found eligible to receive a separate rate.  Albemarle Corporation, which was determined by the Commerce Department to be a domestic wholesaler of activated carbon, requested a review of Calgon Carbon (Tianjin).  As a result, Calgon Carbon (Tianjin) was assigned the separate rate respondent margin of $0.07/lb.
	On December 26, 2013, Albemarle Corporation and Ningxia Huahui Activated Carbon Co., Ltd. filed a summons with the U.S. Court of International Trade commencing a challenge of the Commerce Department’s final results for POR V.  On January 30, 2014 Albemarle Corporation and Ningxia Huahui Activated Carbon Co., Ltd elected not to pursue their appeal challenging the final results of the fifth administrative review.  Because there is no further litigation challenging the final results of the fifth administrative review, U.S. Customs will proceed to liquidate the affected entries, assessing antidumping duties at the rates calculated in the final results.
	Sunset Review:  In March 2012, the Commerce Department and U.S. International Trade Commission (“ITC”) initiated proceedings as part of a five-year “sunset” review to evaluate whether the anti-dumping order should be continued for an additional five years.  The Company, and two other U. S. producers of activated carbon, participated in the review to support continuation of the anti-dumping order for an additional five years.  The Company maintained that the continuation of the anti-dumping order was appropriate as the Commerce Department has determined that Chinese producers and exporters have continued — and, absent continuation of the anti-dumping order, will in the future continue — to sell activated carbon in the United States at unfairly low prices.  This is demonstrated by the positive anti-dumping duty margins and deposit rates determined during the various annual reviews conducted by the Commerce Department since the anti-dumping order took effect in April 2007.  The Company asserted that the disciplining effect of the order played an important role in maintaining fair market pricing of the activated carbon market overall.  Without the anti-dumping order in place, the Company argued that Chinese producers and exporters would resume or increase dumping of certain thermally activated carbon in the United States.  Since the anti-dumping order was published, the Company has reduced its imports of covered activated carbon products from China and has increased production of activated carbon in the United States. On June 6, 2012, the Commerce Department published in the Federal Register its final results in an expedited sunset review, and determined that absent continuation of the anti-dumping order dumping of Chinese activated carbon in the United States would be likely to continue or recur.  As a result, it determined the order should be continued for an additional five years.
	On June 4, 2012 the ITC voted unanimously to conduct a full review of the anti-dumping order.  As a result, the agency utilized a process similar to its original injury investigation, where the agency distributed detailed questionnaires to gather information for its investigation from domestic producers, foreign producers, U.S. importers, and purchasers, and conducted a hearing on December 18, 2012.  The Company and the two other U.S. producers of activated carbon, as well as a U.S. importer of activated carbon, participated in the hearing.  Based on the information gathered by the agency during its review, the ITC reached a unanimous affirmative determination on February 8, 2013, voting to continue the anti-dumping order for an additional five years.  The Commerce Department published a notice in the Federal Register on March 18, 2013, stating that the anti-dumping order will be continued for an additional five years.
	Period of Review VI: On April 2, 2013, the Commerce Department published a formal notice allowing parties to request a sixth annual administrative review of the anti-dumping duty order covering the period April 1, 2012 through March 31, 2013 (“POR VI”).  Requests for an administrative review were submitted to the Commerce Department in April 2013.  On June 26, 2013, the Commerce Department announced its selection of Jacobi Carbons AB and Ningxia Guanghua Cherishmet Activated Carbon Co., Ltd. (and its affiliates) as the two mandatory respondents for POR VI.  Albemarle Corporation has requested a review of Calgon Carbon (Tianjin) for POR VI.  The analysis of POR VI began in the third quarter of 2013 and the preliminary results of the Commerce Department’s review of POR VI are anticipated to be announced in late April or early May of 2014.
	Continued Dumping and Subsidy Offset Act Distributions:  Pursuant to the Continued Dumping and Subsidy Offset Act (CDSOA) of 2000 (repealed effective February 8, 2006), as an affected domestic producer, the Company is eligible to apply for a share of the distributions of certain tariffs collected on imports of subject merchandise from China that entered the United States from October 11, 2006 to September 30, 2007.  As a result, the Company is eligible to receive a distribution of duties collected on imports of certain activated carbon that entered the United States during a portion of POR I.  In June 2013, June 2012, and July 2011, 2010, 2009 and 2008, the Company applied for such distributions which are typically made in the fourth quarter of each calendar year.  There were no additional amounts received by the Company for the years ended December 31, 2011 and 2010.  In November 2009 and December 2008, the Company received distributions of approximately $0.8 million and $0.2 million, respectively, which reflected 59.57% of the total amount of duties then available and distributed by Customs in connection with the anti-dumping order on certain activated carbon from China.
	CDSOA distributions related to POR I imports were on hold while the POR I final results for certain exporters were under appeal.  All POR I appeals were subsequently resolved and Customs issued liquidation instructions in October 2011 for activated carbon entries affected by the appeal process involving POR I.  The Company received $1.8 million in December 2012 related to the CDSOA distributions of which $1.5 million was reflected within the Company’s statement of comprehensive income for the year ended December 31, 2012.
	In December 2013, the Company received $0.1 million in connection with the CDSOA distributions for fiscal year 2013.  This amount was equal to 59.57 percent of the duties distributed by CBP under the anti-dumping order on certain thermally activated carbon from China.  The Company does not anticipate any further material CDSOA distributions in future years.
	Big Sandy Plant
	By letter dated January 22, 2007, the Company received from the United States Environmental Protection Agency (EPA) Region 4 a report of a hazardous waste facility inspection performed by the EPA and the Kentucky Department of Environmental Protection (KYDEP) as part of a Multi Media Compliance Evaluation of the Company’s Big Sandy Plant in Catlettsburg, Kentucky that was conducted on September 20 and 21, 2005. Accompanying the report was a Notice of Violation (NOV) alleging multiple violations of the Federal Resource Conservation and Recovery Act (RCRA) and corresponding EPA and KYDEP hazardous waste regulations as well as the Clean Water Act (CWA).The alleged violations mainly concerned the Company’s hazardous waste spent activated carbon regeneration facility. The Company accrued $2.0 million as its estimate of potential loss related to this matter as of December 31, 2010 and later reduced that accrual by $0.2 million in each of the years ended December 31, 2012 and 2013, respectively.
	In the fall of 2013, the Company, the EPA, and the United States Department of Justice (DOJ) signed and delivered a consent decree. On October 28, 2013, the consent decree was lodged with the Federal District Court in Kentucky.  On December 27 the DOJ filed a motion with the Court to enter the consent decree.  The Court ordered the consent decree effective on January 29, 2014.
	As part of the consent decree, the Company paid a civil penalty of $1.6 million on February 24, 2014, but makes no admissions of any violations.  The Company will be required under the consent decree  to conduct testing of the portion of stockpiled material dredged from onsite wastewater treatment lagoons that has not previously been tested  in accordance with a pre-approved work plan and will install two ground water monitoring wells at the Company’s permitted solid waste landfill where some lagoon solids had previously been disposed.  The consent decree provides that EPA and DOJ agree that such landfill is to be considered a non-hazardous facility and regulated by KYDEP.  Finally, the Company will not be required to close or retrofit any of the wastewater treatment lagoons as RCRA hazardous waste management units and may continue to use them in their current manner.  The Company will be subject to daily stipulated penalties for any failure to conduct the required testing of the previously untested stockpile or to install and sample the landfill wells in accordance with the EPA-approved protocols and schedules.  The Company has also recognized net costs of approximately $0.4 million for the year ended December 31, 2013 related primarily to the required ongoing testing and sampling.
	Frontier Chemical Processing Royal Avenue Site
	In June 2007, the Company received a Notice Letter from the New York State Department of Environmental Conservation (NYSDEC) stating that the NYSDEC had determined that the Company is a Potentially Responsible Party (PRP) at the Frontier Chemical Processing Royal Avenue Site in Niagara Falls, New York (the Site).  The Notice Letter requested that the Company and other PRP’s develop, implement and finance a remedial program for Operable Unit #1 at the Site.  Operable Unit #1 consists of overburden soils and overburden and upper bedrock groundwater.  The Company has joined a PRP group (the PRP Group) and has executed a Joint Defense Agreement with the group members.  In August 2008, the Company and over 100 PRP’s entered into a Consent Order with the NYSDEC for additional site investigation directed toward characterization of the Site to better define the scope of the remedial project.  The Company contributed monies to the PRP Group to help fund the work required under the Consent Order.  The additional site investigation required under the Consent Order was initiated in 2008 and completed in the spring of 2009. A final report of the site investigation was submitted to the NYSDEC in October 2009 and revised in September 2010.  By letter dated October 10, 2010, the NYSDEC approved the report and terminated the Consent Order.  The PRP Group was issued a Significant Industrial User Permit by the Niagara Falls Water Board (NFWB) in November 2010.  The permit allows the shallow ground water flow from the Site to continue to be naturally captured by the adjacent sewer tunnels with subsequent treatment of the ground water at the Niagara Falls Wastewater Treatment Plant.
	In March 2013, the Company, along with over thirty other PRPs, entered into a consent decree with the NYSDEC pursuant to which the work plan for the remedial program was agreed upon. The cleanup has begun and is essentially complete.  The PRP Group has spent approximately $7.3 million for the remediation thus far.  The PRP Group estimates that approximately $1.8 million of additional costs remain, but has almost $1.2 million of funds available to apply against the final costs. The Company does not anticipate that it will suffer any material loss with respect to this matter.
	Pearl River Plant
	In August 2012, the Company’s Pearl River plant, located in Pearlington, Mississippi, was impacted by Hurricane Isaac.  The Company has both property and business interruption insurance coverage for this plant.  In January 2013, management filed a claim with its insurance carrier to recover damages for both property and business interruption related to this event.  In March 2013, the Company settled its insurance claim and received $0.4 million from its insurance carrier and recorded it as a deduction to cost of products sold (excluding depreciation) for the year ended December 31, 2013.
	Other
	In addition to the matters described above, the Company is involved in various other legal proceedings, lawsuits and claims, including employment, product warranty and environmental matters of a nature considered normal to its business.  It is the Company’s policy to accrue for amounts related to these legal matters when it is probable that a liability has been incurred and the loss amount is reasonably estimable.  Management believes that the ultimate liabilities, if any, resulting from such lawsuits and claims will not materially affect the consolidated financial position or liquidity of the Company, but an adverse outcome could be material to the results of operations in a particular period in which a liability is recognized.

Basic_and_Diluted_Net_Income_P

Basic and Diluted Net Income Per Common Share	12 Months Ended
	Dec. 31, 2013
Basic and Diluted Net Income Per Common Share	'
Basic and Diluted Net Income Per Common Share	'
	18. Basic and Diluted Net Income Per Common Share
	Computation of basic and diluted net income per common share is performed as follows:
		For the Year Ended
	(Dollars in thousands, except per share amounts)	2013		2012		2011
	Net income available to common shareholders	$	45,713	$	23,272	$	39,224
	Weighted Average Shares Outstanding
	Basic	53,897,834		56,304,636		56,243,015
	Effect of Dilutive Securities	773,195		530,924		750,933
	Diluted	54,671,029		56,835,560		56,993,948
	Basic net income per common share	$	0.85	$	0.41	$	0.7
	Diluted net income per common share	$	0.84	$	0.41	$	0.69
	For the years ended December 31, 2013, 2012 and 2011, there were zero, 341,277, and 131,890 options, respectively, that were excluded from the dilutive calculations as the effect would have been antidilutive.

Segment_Information

Segment Information	12 Months Ended
	Dec. 31, 2013
Segment Information	'
Segment Information	'
	19. Segment Information
	The Company’s management has identified three segments based on the product line and associated services. Those segments include Activated Carbon and Service, Equipment, and Consumer. The Company’s chief operating decision maker, its chief executive officer, receives and reviews financial information in this format. The Activated Carbon and Service segment manufactures granular activated carbon for use in applications to remove organic compounds from liquids, gases, water, and air. This segment also consists of services related to activated carbon including reactivation of spent carbon and the leasing, monitoring, and maintenance of carbon fills at customer sites. The service portion of this segment also includes services related to the Company’s ion exchange technologies for treatment of groundwater and process streams. The Equipment segment provides solutions to customers’ air and water process problems through the design, fabrication, and operation of systems that utilize the Company’s enabling technologies: ballast water, ultraviolet light, advanced ion exchange separation, and carbon adsorption. The Consumer segment supplies activated carbon for use in military, industrial, and medical applications. Intersegment net sales are not material. The following segment information represents the results of operations:
		Year Ended December 31
	(Dollars in thousands)	2013			2012			2011
	Net sales
	Activated Carbon and Service	$	482,278		$	485,755		$	486,468
	Equipment	54,935			66,050			46,274
	Consumer	10,726			10,450			8,730
	Consolidated net sales	$	547,939		$	562,255		$	541,472
		Year Ended December 31
	(Dollars in thousands)	2013			2012			2011
	Income (loss) from operations before amortization and restructuring charges
	Activated Carbon and Service	$	71,530		$	49,328		$	65,030
	Equipment	(2,620		)	702			(3,504		)
	Consumer	1,990			2,010			(2,537		)
		$	70,900		$	52,040		$	58,989
	Reconciling items:
	Amortization	(2,140		)	(1,968		)	(1,757		)
	Restructuring charges (Note 2)	129			(10,211		)	—
	Interest income	136			35			467
	Interest expense	(462		)	(80		)	—
	Other expense — net	(1,364		)	(2,480		)	(1,309		)
	Consolidated income before income taxes	$	67,199		$	37,336		$	56,390
		Year Ended December 31
	(Dollars in thousands)	2013			2012			2011
	Depreciation
	Activated Carbon and Service	$	24,882		$	22,578		$	20,959
	Equipment	1,486			1,352			1,332
	Consumer	430			422			289
		$	26,798		$	24,352		$	22,580
	Amortization	2,140			1,968			1,757
	Consolidated depreciation and amortization	$	28,938		$	26,320		$	24,337
		December 31
	(Dollars in thousands)	2013			2012			2011
	Total assets
	Activated Carbon and Service	$	527,430		$	510,550		$	493,793
	Equipment	55,558			60,191			53,216
	Consumer	7,090			7,028			5,981
	Consolidated total assets	$	590,078		$	577,769		$	552,990
		Year Ended December 31
	(Dollars in thousands)	2012			2011			2010
	Expenditures for Long-Lived Assets
	Activated Carbon and Service	$	25,885		$	56,291		$	68,533
	Equipment	3,325			550			752
	Consumer	347			385			1,103
	Consolidated property, plant and equipment expenditures	$	29,557	-1	$	57,226	-2	$	70,388	-3
	(1)         Includes $0.5 million which is included in accounts payable and accrued liabilities at December 31, 2013.
	(2)         Includes $1.5 million which is included in accounts payable and accrued liabilities at December 31, 2012.
	(3)         Includes $2.2 million which is included in accounts payable and accrued liabilities at December 31, 2011.
	Net Sales by Product
		Year Ended December 31
	(Dollars in thousands)	2013			2012			2011
	Carbon products	$	460,681		$	465,885		$	466,046
	Capital equipment	49,036			61,588			40,650
	Equipment leasing	15,127			13,886			14,815
	Carbon cloth products	10,721			10,422			7,868
	Spare parts	5,899			4,462			5,624
	Home consumer products	5			28			862
	Other services	6,470			5,984			5,607
	Consolidated net sales	$	547,939		$	562,255		$	541,472
	Geographic Information
		Year Ended December 31
	(Dollars in thousands)	2013			2012			2011
Net sales
United States	$	272,644		$	261,167		$	254,953
Japan	60,804			71,141			73,335
United Kingdom	40,215			37,991			32,948
France	27,969			21,456			20,302
Germany	18,784			20,120			20,513
Canada	16,945			17,861			19,986
China	15,832			15,179			10,369
Belgium	10,690			10,112			11,419
Singapore	9,364			10,380			6,661
South Korea	7,364			20,178			12,546
Switzerland	5,334			4,683			3,324
Netherlands	5,283			6,009			6,861
Spain	3,806			4,049			3,665
Australia	3,775			3,214			6,424
Denmark	3,639			4,142			4,178
Other	45,491			54,573			53,988
Consolidated net sales	$	547,939		$	562,255		$	541,472
Net sales are attributable to countries based on location of customer.
	December 31
(Dollars in thousands)	2013			2012			2011
Long-lived assets
United States	$	169,786		$	161,806		$	133,176
Belgium	64,567			66,077			64,051
China	16,990			17,864			19,319
United Kingdom	8,832			8,654			8,043
Japan	6,334			7,908			9,152
Canada	159			474			653
Singapore	77			106			135
Denmark	64			53			—
Brazil	28			36			—
Germany	12			15			20
Consolidated long-lived assets	$	266,849		$	262,993		$	234,549

Government_Grants

Government Grants	12 Months Ended
	Dec. 31, 2013
Government Grants	'
Government Grants	'
	20. Government Grants
	The Company entered into an agreement with the Administrative Committee of Suzhou Wuzhong Economic Development Zone, located in Suzhou, China, by which the Company agreed to establish a wholly foreign-owned company, Calgon Carbon (Suzhou) Company Limited, in Hedong Hi-Tech Industrial Park in Suzhou Wuzhong Economic Development Zone with the business of carbon reactivation.  The Company has been awarded a one-time incentive of CNY13.96 million or $2.2 million, a Science and Technology Aid Fund (aid fund), to support the project.  For the year ended December 31, 2011, the Company received the aforementioned grant and recognized it as a deduction from the carrying amount of the property, plant and equipment on its consolidated balance sheet.
	On June 20, 2011, the Company was awarded a $1.0 million grant from the Ohio Department of Development’s Ohio Third Frontier Advanced Energy Program (OTF AEP) to support its activated carbon commercialization efforts.  The objective of the project is to commercialize cost-effective activated carbon materials for use in energy storage applications and markets around the world.  The grant is being utilized to upgrade capital equipment at the Company’s Columbus, Ohio facility which will enable the manufacturing of highly demanded cost-effective activated carbon materials for use in energy storage markets.  The Company has received $0.4 million and $0.3 million of the grant for each of the year to date periods ended December 31, 2013 and 2012, respectively.  The Company recognized $0.2 million of the grant received for each of the year to date periods ended December 31, 2013 and 2012, respectively, as a deduction from the carrying amount of the property, plant and equipment on its consolidated balance sheets.  The Company recognized the remaining $0.2 million and $0.1 million for each of the year to date periods ended December 31, 2013 and 2012, respectively, as a reduction to research and development expenses on its consolidated statements of comprehensive income (loss).
	On December 7, 2007, the Company was also awarded two separate grants with the Walloon region (the Region) in Belgium, where its Feluy facility is located.  The awards are based on the Company’s contributions to the strategic development of the Region through its investment in the expansion of the Feluy facility and creation of employment opportunities.  The grants total approximately 2.6 million Euros or $3.4 million.  The Company received 1.2 million Euros or $1.5 million for the year ended December 31, 2013 and 0.5 million Euros or $0.7 million for the year ended December 31, 2012.  The Company has recognized the grants as a deduction from the carrying amount of the property, plant and equipment on its consolidated balance sheets in the respective periods received.

QUARTERLY_FINANCIAL_DATA_UNAUD

QUARTERLY FINANCIAL DATA - UNAUDITED	12 Months Ended
	Dec. 31, 2013
QUARTERLY FINANCIAL DATA - UNAUDITED	'
QUARTERLY FINANCIAL DATA - UNAUDITED	'
	QUARTERLY FINANCIAL DATA — UNAUDITED
		2013								2012
	(Thousands except per share data)	1stQuarter		2nd Quarter		3rd Quarter		4th Quarter		1stQuarter		2nd Quarter		3rd Quarter(1)			4th Quarter(2)
	Net sales	$	135,040	$	140,432	$	139,375	$	133,092	$	136,608	$	148,403	$	135,467		$	141,777
	Net sales less cost of products sold (excluding depreciation)	$	42,625	$	46,375	$	46,374	$	45,603	$	42,782	$	45,947	$	36,923		$	44,221
	Net income (loss)	$	9,814	$	12,970	$	11,885	$	11,044	$	7,738	$	10,884	$	(4,453	)	$	9,103
	Common Stock Data:
	Basic:
	Net income (loss) per common share	$	0.18	$	0.24	$	0.22	$	0.2	$	0.14	$	0.19	$	(0.08	)	$	0.16
	Diluted:
	Net income (loss) per common share	$	0.18	$	0.24	$	0.22	$	0.2	$	0.14	$	0.19	$	(0.08	)	$	0.16
	Average common shares outstanding
	Basic	53,620		53,799		53,900		54,265		56,512		56,639		56,682			55,390
	Diluted	54,200		54,547		54,764		55,160		57,124		57,190		57,197			55,837
	(1)  Includes an $8.0 million, pre-tax, restructuring charge and a $1.7 million multi-employer plan charge (Refer to Notes 2 and 12 ).  Also includes a $1.7 million charge related to an agreement with the Company’s former Chief Executive Officer.
	(2) Includes a $2.2 million, pre-tax, restructuring charge (Refer to Note 2 of the Company’s consolidated financial statements contained in Item 8 of this Annual Report for further information).

Schedule_II_Valuation_and_Qual

Schedule II Valuation and Qualifying Accounts	12 Months Ended
	Dec. 31, 2013
Schedule II Valuation and Qualifying Accounts	'
Schedule II Valuation and Qualifying Accounts	'
	Schedule II
	Valuation and Qualifying Accounts
	(Thousands)
				Additions
				Charged to		Deductions
		Balance at		Costs and		Returns and			Balance at
	Description	Beginning of Year		Expenses		Write-Offs			End of Year
	Year ended December 31, 2013
	Allowance for doubtful accounts	$	1,362	$	488	$	(522	)	$	1,328
	Year ended December 31, 2012
	Allowance for doubtful accounts	1,200		464		(302		)	1,362
	Year ended December 31, 2011
	Allowance for doubtful accounts	1,743		215		(758		)	1,200
				Additions
				Charged to		Deductions
		Balance at		Costs and		Returns and			Balance at
	Description	Beginning of Year		Expenses		Write-Offs			End of Year
	Year ended December 31, 2013
	Income tax valuation allowance	$	1,146	$	988	$	(1,146	)	$	988
	Year ended December 31, 2012
	Income tax valuation allowance	—		1,146		—			1,146
	Year ended December 31, 2011
	Income tax valuation allowance	—		—		—			—

Summary_of_Accounting_Policies1

Summary of Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2013
Summary of Accounting Policies	'
Operations	'
	Operations
	Calgon Carbon Corporation (the Company) is a global leader in services and solutions for purifying water and air, food, beverage, and industrial process streams. The Company’s operations are principally conducted in three business segments: Activated Carbon and Service, Equipment, and Consumer. Each of these segments includes the production, design and marketing of products and services specifically developed for the purification, separation and concentration of liquids and gases. The Activated Carbon and Service segment relies on activated carbon as a base material, while the Equipment segment relies on a variety of methods and materials which involve other products in addition to activated carbon. The Consumer segment brings the Company’s purification technologies directly to the consumer in the form of products and services. The Company’s largest markets are in the United States, Europe, and Japan. The Company also has markets in Africa, Canada, India, Latin America, and in other parts of Asia.
Principles of Consolidation	'
	Principles of Consolidation
	The consolidated financial statements include the accounts of majority-owned and controlled subsidiaries.  Investments in business entities in which the Company does not have control, but has the ability to exercise significant influence over the operating and financial policies, are accounted for under the equity method. All significant intercompany transactions and accounts have been eliminated in consolidation.
Foreign Currency	'
	Foreign Currency
	Substantially all assets and liabilities of the Company’s international operations are translated at year-end exchange rates; income and expenses are translated at average exchange rates prevailing during the year. Translation adjustments represent other comprehensive income or loss and are accumulated in a separate component of shareholders’ equity, net of tax effects. Transaction gains and losses are included in Other expense-net.
Revenue Recognition	'
	Revenue Recognition
	Revenue and related costs are recognized when goods are shipped or services are rendered to customers provided that ownership and risk of loss have passed to the customer, the price to the customer is fixed or determinable, and collection is reasonably assured. Revenue for major equipment projects is recognized under the percentage of completion method. The Company’s major equipment projects generally have a long project life cycle from bid solicitation to project completion. The nature of the contracts are generally fixed price with milestone billings. The Company recognizes revenue for these projects based on the fixed sales prices multiplied by the percentage of completion. In applying the percentage of completion method, a project’s percent complete as of any balance sheet date is computed as the ratio of total costs incurred to date divided by the total estimated costs at completion. As changes in the estimates of total costs at completion and/or estimated total losses on projects are identified, appropriate earnings adjustments are recorded during the period that the change or loss is identified. The Company has a history of making reasonably dependable estimates of costs at completion on contracts that follow the percentage of completion method; however, due to uncertainties inherent in the estimation process, it is possible that actual project costs at completion could vary from estimates. The principal components of costs include material, direct labor, subcontracts, and allocated indirect costs. Indirect costs primarily consist of administrative labor and associated operating expenses, which are allocated to the respective projects on actual hours charged to the project utilizing a standard hourly rate.
Allowance for Doubtful Accounts	'
	Allowance for Doubtful Accounts
	The Company maintains allowances for doubtful accounts for estimated losses resulting from the inability of its customers to make required payments. The amount of allowance recorded is primarily based upon a periodic review of specific customer transactions that remain outstanding at least three months beyond their respective due dates.
Inventories	'
	Inventories
	Inventories are carried at the lower of cost or market. Inventory costs are primarily determined using the first-in, first-out (FIFO) method.
Property, Plant and Equipment	'
	Property, Plant and Equipment
	Property, plant and equipment is recorded at cost. Repair and maintenance costs are expensed as incurred. Depreciation for financial reporting purposes is computed on the straight-line method over the estimated service lives of the assets, which are from 15 to 30 years for land improvements and buildings, 5 to 15 years for furniture, machinery and equipment, 5 to 10 years for customer capital, 5 years for vehicles, and 5 to 10 years for computer hardware and software.  Expenditures for new facilities and improvements that substantially extend the capacity or useful life of an asset are capitalized.
Goodwill and Other Intangible Assets	'
	Goodwill and Other Intangible Assets
	Goodwill represents the excess of the cost of an acquired business over the fair value of the identifiable tangible and intangible assets acquired and liabilities assumed in a business combination. Identifiable intangible assets acquired in business combinations are recorded based on their fair values at the date of acquisition. In accordance with guidance within Accounting Standards Codification (ASC) 350, “Intangibles - Goodwill and Other,” goodwill and identifiable intangible assets with indefinite lives are not subject to amortization but must be evaluated for impairment. None of the Company’s identifiable intangible assets other than goodwill have indefinite lives.
	The Company has elected to perform the annual impairment test of its goodwill, as required, on December 31 of each year by initially comparing the fair value of each of the Company’s reporting units to their related carrying values. If the fair value of the reporting unit is less than its carrying value, the Company performs an additional step to determine the implied fair value of the goodwill. The implied fair value of goodwill is determined by first allocating the fair value of the reporting unit to all of the assets and liabilities of the unit and then computing the excess of the unit’s fair value over the amounts assigned to the assets and liabilities. If the carrying value of goodwill exceeds the implied fair value of goodwill, such excess represents the amount of goodwill impairment, and the Company recognizes such impairment accordingly. Fair values are estimated using discounted cash flows and other valuation methodologies that are based on projections of the amounts and timing of future revenues and cash flows, assumed discount rates and other assumptions as deemed appropriate. The Company also considers such factors as historical performance, anticipated market conditions, operating expense trends and capital expenditure requirements.
	The Company’s identifiable intangible assets other than goodwill have finite lives. Certain of these intangible assets, such as customer relationships, are amortized using an accelerated methodology while others, such as patents, are amortized on a straight-line basis over their estimated useful lives. In addition, intangible assets with finite lives are evaluated for impairment whenever events or circumstances indicate that their carrying amount may not be recoverable, as prescribed by guidance within ASC 360, “Property, Plant, and Equipment.”
Long-Lived Assets	'
	Long-Lived Assets
	The Company evaluates long-lived assets under the provisions of ASC 360 “Property, Plant, and Equipment,” which addresses financial accounting and reporting for the impairment of long-lived assets and for long-lived assets to be disposed of. For assets to be held and used, the Company groups a long-lived asset or assets with other assets and liabilities at the lowest level for which identifiable cash flows are largely independent of the cash flows of other assets and liabilities. An impairment loss for an asset group reduces only the carrying amounts of a long-lived asset or assets of the group being evaluated. The loss is allocated to the long-lived assets of the group on a pro-rata basis using the relative carrying amounts of those assets, except that the loss allocated to an individual long-lived asset of the group does not reduce the carrying amount of that asset below its fair value whenever that fair value is determinable without undue cost and effort. Estimates of future cash flows to test the recoverability of a long-lived asset group include only the future cash flows that are directly associated with and that are expected to arise as a direct result of the use and eventual disposition of the asset group. The future cash flow estimates used by the Company exclude interest charges.
Income Taxes	'
	Income Taxes
	Deferred tax assets and liabilities are recognized for the future tax consequences of temporary differences between the book and tax basis of assets and liabilities. If it is more likely than not that some portion or all of a deferred tax asset will not be realized, a valuation allowance is recognized. The Company assesses its ability to realize deferred tax assets based on normalized historical performance and on projections of future taxable income in the relevant tax jurisdictions. Normalized historical performance for purposes of this assessment includes adjustments for those income and expense items that are unusual and non-recurring in nature and are not expected to affect results in future periods. Such unusual and non-recurring items include the effects of legal fees or settlements associated with specific litigation matters and restructuring costs. The Company’s projections of future taxable income considers known events, such as the passage of legislation or expected occurrences, and do not reflect a general growth assumption. The Company’s estimates of future taxable income are reviewed annually or whenever events or changes in circumstances indicate that such projections should be modified.
	The Company utilizes guidance within ASC 740 “Income Taxes” regarding the accounting for uncertainty in income taxes.  This guidance prescribes recognition and measurement standards for a tax position taken or expected to be taken in a tax return. According to this guidance, the evaluation of a tax position is a two step process. The first step is the determination of whether a tax position should be recognized in the financial statements. The benefit of a tax position taken or expected to be taken in a tax return is to be recognized only if the Company determines that it is more likely than not that the tax position will be sustained upon examination by the tax authorities based upon the technical merits of the position. In step two, for those tax positions which should be recognized, the measurement of a tax position is determined as being the largest amount of benefit that is greater than 50% likely of being realized upon ultimate settlement.
	No provision is made for U.S. income taxes on the undistributed earnings of non-U.S. subsidiaries of $77.4 million because these earnings are intended to be indefinitely reinvested outside the United States. These earnings would become subject to income tax if they were remitted as dividends, were loaned to the Company or a U.S. affiliate, or if the Company were to sell its ownership interest in the subsidiaries. Determination of the amount of unrecognized deferred U.S. income tax liability on these indefinitely reinvested unremitted earnings is not practicable.
Pensions	'
	Pensions
	Accounting for pensions involves estimating the cost of benefits to be provided well into the future and attributing that cost over the time period each employee works. To accomplish this, extensive use is made of assumptions about inflation, investment returns, mortality, turnover and discount rates. These assumptions are reviewed annually. In determining the expected return on plan assets, the Company evaluates long-term actual return information, the mix of investments that comprise plan assets and future estimates of long-term investment returns.  In determining the discount rates for pension obligations, the Company evaluates long-term corporate bonds that receive one of the two highest ratings given by a recognized rating agency.
Net Income per Common Share	'
	Net Income per Common Share
	Basic net income per common share is computed by dividing net income by the weighted average number of common shares outstanding during the period. Diluted net income per common share is computed by dividing net income by the weighted average number of common shares outstanding plus all potential dilutive common shares outstanding during the period. Potential dilutive common shares are determined using the treasury stock method. Under the treasury stock method, exercise of options is assumed at the beginning of the period when the average stock price during the period exceeds the exercise price of outstanding options and common shares are assumed issued. The proceeds from exercise are assumed to be used to purchase common stock at the average market price during the period. The incremental shares to be issued are considered to be the potential dilutive common shares outstanding.
Cash and Cash Equivalents	'
	Cash and Cash Equivalents
	The Company considers all highly liquid, short-term investments made with an original maturity of three months or less to be cash equivalents.
Derivative Instruments	'
	Derivative Instruments
	The Company applies ASC 815, “Derivatives and Hedging.” ASC 815 establishes accounting and reporting standards for derivative instruments, including certain derivative instruments embedded in other contracts and for hedging activities. Derivative financial instruments are occasionally utilized by the Company to manage risk exposure to movements in foreign exchange rates or the prices of natural gas. The Company enters into derivative financial instruments with high credit quality counterparties and diversifies its positions among such counterparties.  In addition, various master netting arrangements are in place with counterparties to facilitate settlement of gains and losses on these contracts. Changes in the value of the derivative financial instruments are measured at the balance sheet date and recognized in current earnings or other comprehensive income depending on whether the derivative is designated as part of a hedge transaction and meets certain other criteria. The Company does not hold derivative financial instruments for trading purposes.
Contingencies	'
	Contingencies
	The Company from time to time is subject to various legal proceedings, lawsuits and claims, including employment, product warranty and environmental matters of the nature considered normal to its business.  It is the Company’s policy to accrue for amounts related to the legal matters when it is probable that a liability has been incurred and the loss amount is reasonably estimable.  Estimates are developed through consultation with legal counsel involved in the defense and are based upon an analysis of probable results, assuming a combination of litigation and settlement strategies. Legal fees associated with defending these various lawsuits and claims are expensed when incurred.
Government Grants	'
	Government Grants
	The Company’s policy for accounting for government grants, including non-monetary grants at fair value, is to recognize them only when there is reasonable assurance that (a) the Company will comply with the conditions attached to the grants and (b) the grants will be received.  A grant will be recognized as income over the period necessary to match it to the related costs, for which it is intended to compensate, on a systematic basis.  Grants related to assets are presented by deducting them from the asset’s carrying amount.  A grant related to income will be deducted from the related expense.
Use of Estimates	'
	Use of Estimates
	The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
Labor Agreements	'
	Labor Agreements
	Collective bargaining agreements cover approximately 28% of the Company’s labor force at December 31, 2013.  Approximately 5% of the Company’s labor force is operating under a collective bargaining agreement that expired on July 31, 2013 as the Company continues to work towards obtaining a new agreement.  The Company’s other collective bargaining agreements expire during 2014 and 2017.  Approximately 5% of the Company’s labor force is covered by a collective bargaining agreement that expires in 2014.
Stock-Based Compensation	'
	Stock-Based Compensation
	The Company applies ASC 718, “Compensation — Stock Compensation.” In accordance with guidance within ASC 718, compensation expense for stock options is recorded over the vesting period using the fair value on the date of grant, as calculated by the Company using the Black-Scholes model. For time vested restricted stock awards, the nonvested restricted stock grant date fair value, which is the market price of the underlying common stock, is expensed over the vesting period. For certain performance based stock awards, the initial grant date fair value of the performance stock awards that vest subject to a market condition is determined using a Monte Carlo simulation model and is expensed on a straight-line basis over the performance period.  For certain performance based stock awards that vest subject to a performance condition, the initial grant date fair value is the market price of the underlying common stock.  This fair value is expensed on a straight-line basis over the performance period when it is probable that the performance condition will be achieved.  The Company’s stock-based compensation plans are more fully described in Note 11.
Concentration of Credit Risk	'
	Concentration of Credit Risk
	Financial instruments that potentially expose the Company to concentrations of credit risk consist primarily of cash and cash equivalents and customer receivables. The Company places its cash with financial institutions and invests in low-risk, highly liquid instruments. With respect to customer receivables, the Company believes that it has no significant concentration of credit risk as no single customer accounted for more than 10 percent of gross annual revenues as of December 31, 2013.  The Company closely monitors the credit risk associated with its customers and to date has not experienced material losses.
Concentration of Deposit Risk	'
	Concentration of Deposit Risk
	From time to time, the Company could have cash deposited with financial institutions in excess of federally insured limits. On November 9, 2010 the FDIC issued a Final Rule implementing section 343 of the Dodd-Frank Wall Street Reform and Consumer Protection Act that provided for unlimited insurance coverage of noninterest-bearing transaction accounts.  For the periods December 31, 2011 through December 31, 2012, all noninterest-bearing transaction accounts were fully insured, regardless of the balance of the account, at all FDIC-insured institutions.  As of December 31, 2013, the Company had no cash deposits with U.S. financial institutions in excess of federally insured limits.  However, the Company’s foreign subsidiaries held cash and cash equivalents of $27.6 million and $16.0 million at December 31, 2013 and 2012, respectively.  Generally, cash and cash equivalents held by foreign subsidiaries are not readily available for use in the United States without adverse tax consequences.
Fair Value	'
	Fair Value
	Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date.  The fair value hierarchy distinguishes between (1) market participant assumptions developed based on market data obtained from independent sources (observable inputs) and (2) an entity’s own assumptions about market participant assumptions developed based on the best information available in the circumstances (unobservable inputs).  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 three levels of the fair value hierarchy are described below:
	·                  Level 1 — Quoted prices (unadjusted) in active markets for identical assets or liabilities;
	·                  Level 2 — Inputs, other than the quoted prices in active markets, that are observable either directly or indirectly; and
	·                  Level 3 — Unobservable inputs that reflect the reporting entity’s own assumptions.
Fair Value of Financial Instruments Excluding Derivative Instruments	'
	Fair Value of Financial Instruments Excluding Derivative Instruments
	The Company’s financial instruments, excluding derivative instruments, consist primarily of cash and cash equivalents, short and long-term debt as well as accounts receivable and accounts payable. The fair value of the cash and cash equivalents, accounts receivable, and accounts payable approximates their carrying value because of the short-term maturity of the instruments.  Refer to Note 7 for a discussion of the fair value of the Company’s short and long-term debt.
New Accounting Pronouncements	'
	New Accounting Pronouncements
	In January 2013, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update, or ASU No. 2013-01, “Balance Sheet (Topic 210): Clarifying the Scope of Disclosures about Offsetting Assets or Liabilities,” or ASU No. 2013-01. ASU 2013-01 clarifies the scope of ASU No. 2011-11, “Balance Sheet (Topic 210): Disclosures about Offsetting Assets and Liabilities,” or ASU 2011-11. ASU 2011-11 requires an entity to disclose information about offsetting and related arrangements to enable users of its financial statements to understand the effect of those arrangements on its financial position. Entities are required to disclose both gross and net information for these instruments. Both ASU 2013-01 and ASU 2011-11 are effective for annual periods beginning on or after January 1, 2013, and interim periods within those annual periods. The Company adopted this guidance effective January 1, 2013. Please refer to Note 16 for the required annual disclosure.
	In February 2013, the FASB issued ASU, No. 2013-02, “Comprehensive Income (Topic 220): Reporting of Amounts Reclassified out of Accumulated Other Comprehensive Income,” or ASU No. 2013-02. ASU 2013-02 requires an entity to provide information about the amounts reclassified out of accumulated other comprehensive income by component. In addition, an entity is required to present, either on the face of the statement where net income is presented or in the notes, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net income but only if the amount reclassified is required under U.S. GAAP to be reclassified to net income. For amounts that are not required under U.S. GAAP to be reclassified in their entirety to net income, an entity is required to cross-reference to other disclosures required under U.S. GAAP that provide additional detail about those amounts. ASU 2013-02 is effective for reporting periods beginning after December 15, 2012. The Company adopted this guidance effective January 1, 2013.  Please refer to Note 14 and the Company’s consolidated statements of comprehensive income for required annual disclosure.
	In February 2013, the FASB issued ASU, No. 2013-04, “Liabilities (Topic 405): Obligations Resulting from Joint and Several Liability Arrangements for Which the Total Amount of the Obligation is Fixed at the Reporting Date,” or ASU No. 2013-04. ASU 2013-04 requires an entity to measure obligations resulting from joint and several liability arrangements for which the total amount of the obligation is fixed at the reporting date, as the sum of the amount the reporting entity agreed to pay on the basis of its arrangement among its co-obligors and any additional amount the reporting entity expects to pay on behalf of its co-obligors.  ASU 2013-04 also requires the nature and amount of the obligation as well as other information about those obligations to be disclosed. ASU 2013-04 is effective for fiscal and interim periods within those years, beginning after December 15, 2013 and should be applied retrospectively. The adoption of this ASU is not expected to have a material impact on the Company’s consolidated financial statements.
	In July 2013, the FASB issued ASU, No. 2013-10, “Derivatives and Hedging (Topic 815): Inclusion of the Fed Funds Effective Swap Rate (or Overnight Index Swap Rate) as a Benchmark Interest Rate for Hedge Accounting Purposes,” or ASU No. 2013-10. ASU 2013-10 permits the Fed Funds Effective Swap Rate (OIS) to be used as a U.S. benchmark interest rate for hedge accounting purposes, in addition to U.S. Treasury and LIBOR. ASU 2013-10 also removes the restriction on using different benchmark rates for similar hedges.  ASU 2013-10 is effective prospectively for qualifying new or redesignated hedging relationships entered into on or after July 17, 2013. The adoption of this ASU has not had a material impact on the Company’s consolidated financial statements.
	In July 2013, the FASB issued ASU, No. 2013-11, “Income Taxes (Topic 740): Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax Credit Carryforward Exists,” or ASU No. 2013-11. ASU 2013-11 requires that an unrecognized tax benefit, or a portion of an unrecognized tax benefit, should be presented in the financial statements as a reduction to a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward. To the extent one of these items is not available at the reporting date; the unrecognized tax benefit should be presented in the financial statements as a liability and should not be combined with deferred tax assets.  ASU 2013-11 is effective for fiscal years, and interim periods within those years, beginning after December 15, 2013 and should be applied prospectively to all unrecognized tax benefits that exist at the effective date. Retrospective application is permitted. The adoption of this ASU is not expected to have a material impact on the Company’s consolidated financial statements.

Restructuring_Charges_Tables

Restructuring Charges: (Tables)	12 Months Ended
	Dec. 31, 2013
Restructuring Charges:	'
Summary of restructuring plan and the activity in the restructuring reserve	'
	(Thousands, except no. of employees)	Employee			Asset			Gain on			Other			Total			Employees
		Termination			Write-offs			Sale						Restructuring			Impacted
		Benefits												Activity
	Restructuring charges	$	5,777		$	4,000		$	—		$	434		$	10,211		120
	Payments	(1,182		)	—			—			(434		)	(1,616		)	(53	)
	Pension settlement	(1,369		)	—			—			—			(1,369		)	—
	Non-cash charges	—			(4,000		)	—			—			(4,000		)	—
	Accrual at December 31, 2012	3,226			—			—			—			3,226			67
	Restructuring charges	357			—			(578		)	92			(129		)	4
	Payments	(3,048		)	—			—			(92		)	(3,140		)	(67	)
	Non-cash charges	—			—			578			—			578			—
	Accrual at December 31, 2013	$	535		$	—		$	—		$	—		$	535		4

Inventories_Tables

Inventories (Tables)	12 Months Ended
	Dec. 31, 2013
Inventories	'
Schedule of components of inventories	'
		December 31
	(Dollars in thousands)	2013		2012
	Raw materials	$	31,603	$	29,353
	Finished goods	77,914		77,813
	Total	$	109,517	$	107,166

Property_Plant_and_Equipment_T

Property, Plant and Equipment (Tables)	12 Months Ended
	Dec. 31, 2013
Property, Plant and Equipment	'
Schedule of property, plant and equipment	'
		December 31
	(Dollars in thousands)	2013			2012
	Land and improvements	$	27,731		$	24,625
	Buildings	70,433			69,821
	Machinery, equipment and customer capital	462,300			405,774
	Computer hardware and software	26,816			21,267
	Furniture and vehicles	9,749			8,891
	Construction-in-progress	27,836			65,912
		624,865			596,290
	Less accumulated depreciation	(358,016		)	(333,297		)
	Net	$	266,849		$	262,993

Goodwill_and_Other_Identifiabl1

Goodwill and Other Identifiable Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2013
Goodwill and Other Identifiable Intangible Assets	'
Schedule of the changes in the carrying amounts of goodwill by segment	'
		Activated
		Carbon and			Equipment			Consumer
	(Dollars in thousands)	Service Segment			Segment			Segment			Total
	Balance as of January 1, 2012	$	20,167		$	6,612		$	60		$	26,839
	Foreign currency translation	143			48			—			191
	Balance as of December 31, 2012	20,310			6,660			60			27,030
	Restructuring (Note 2)	(419		)	—			—			(419		)
	Foreign currency translation	70			(129		)	—			(59		)
	Balance as of December 31, 2013	$	19,961		$	6,531		$	60		$	26,552
Summary of identifiable intangible assets	'
		December 31, 2013
		Weighted
		Average		Gross									Net
		Amortization		Carrying			Foreign			Accumulated			Carrying
	(Dollars in thousands)	Period		Amount			Exchange			Amortization			Amount
	Amortized intangible assets:
	Patents	20.0Years		$	676		$	—		$	(592	)	$	84
	Customer Relationships	15.9 Years		10,450			(209		)	(8,777		)	1,464
	Product Certification	5.4 Years		7,905			(34		)	(5,237		)	2,634
	Unpatented Technology	18.4 Years		3,183			—			(2,457		)	726
	Licenses	20.0 Years		964			(43		)	(227		)	694
	Total	12.9 Years		$	23,178		$	(286	)	$	(17,290	)	$	5,602
		December 31, 2012
		Weighted
		Average		Gross									Net
		Amortization		Carrying			Foreign			Accumulated			Carrying
	(Dollars in thousands)	Period		Amount			Exchange			Amortization			Amount
	Amortized intangible assets:
	Patents	20.0 Years		$	676		$	—		$	(548	)	$	128
	Customer Relationships	15.9 Years		10,450			(223		)	(8,311		)	1,916
	Product Certification	5.4 Years		7,369			(3		)	(3,917		)	3,449
	Unpatented Technology	18.4 Years		3,183			—			(2,191		)	992
	Licenses	20.0 Years		964			119			(180		)	903
	Total	13.1 Years		$	22,642		$	(107	)	$	(15,147	)	$	7,388
Schedule of estimated amortization expense to be recognized during next five years	'
	For the year ending December 31:	(Dollars in thousands)
	2014	$	2,026
	2015	1,360
	2016	1,132
	2017	333
	2018	141

Product_Warranties_Tables

Product Warranties (Tables)	12 Months Ended
	Dec. 31, 2013
Product Warranties	'
Schedule of change in warranty reserve	'
		December 31
	(Dollars in thousands)	2013			2012
	Beginning Balance	$	2,072		$	1,624
	Payments and replacement product	(756		)	(801		)
	Additions to warranty reserve for warranties issued during the period	916			1,249
	Change in the warranty reserve for pre-existing warranties	(36		)	—
	Ending Balance	$	2,196		$	2,072

Borrowing_Arrangements_Tables

Borrowing Arrangements (Tables)	12 Months Ended
	Dec. 31, 2013
Borrowing Arrangements	'
Schedule of short-term debt	'
		December 31
	(Dollars in thousands)	2013		2012
	Borrowings under Japanese Working Capital Loan	$	1,900	$	18,611
	Borrowings under Japanese Term Loan	—		954
	Borrowings under China Credit Facility	272		—
	Total	$	2,172	$	19,565
Schedule of long-term debt	'
		December 31
	(Dollars in thousands)	2013		2012
	U.S. Credit Facility Borrowings	$	26,250	$	44,250
	Borrowings under Japanese Term Loan	5,699		—
	Belgian Loan Borrowings	165		158
	Total	$	32,114	$	44,408

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2013
Fair Value Measurements	'
Schedule of carrying amount, fair value, and classification within the fair value hierarchy of financial instrument assets (liabilities)	'
		December 31, 2013
		Carrying			Fair Value
	(Dollars in thousands)	Amount			Total			Level 1		Level 2			Level 3
	Derivative assets	$	1,874		$	1,874		$	—	$	1,874		$	—
	Derivative liabilities	(423		)	(423		)	—		(423		)	—
	Acquisition earn-out liability	(850		)	(850		)	—		(850		)	—
	U.S. credit facility	(26,250		)	(26,250		)	—		(26,250		)	—
	China credit facility	(272		)	(272		)	—		(272		)	—
	Japanese working capital loan	(1,900		)	(1,900		)	—		(1,900		)	—
	Japanese term loan	(5,699		)	(5,699		)	—		(5,699		)	—
	Other loans	(165		)	(165		)	—		(165		)	—
		December 31, 2012
		Carrying			Fair Value
	(Dollars in thousands)	Amount			Total			Level 1		Level 2			Level 3
	Derivative assets	$	1,120		$	1,120		$	—	$	1,120		$	—
	Derivative liabilities	(646		)	(646		)	—		(646		)	—
	Acquisition earn-out liability	(1,300		)	(1,300		)	—		(1,300		)	—
	U.S. credit facility	(44,250		)	(44,250		)	—		(44,250		)	—
	Japanese working capital loan	(18,611		)	(18,611		)	—		(18,611		)	—
	Japanese term loan	(954		)	(954		)	—		(954		)	—
	Other loans	(158		)	(158		)	—		(158		)	—

Commitments_Tables

Commitments (Tables)	12 Months Ended
	Dec. 31, 2013
Commitments	'
Schedule of total payments made for purchases under long-term supply contracts	'
		December 31
	(Dollars in thousands)	2013		2012		2011
	Raw and other materials	$	40,170	$	30,802	$	33,953
	Transportation	9,794		9,731		8,782
	Information systems and services	2,746		4,505		3,846
	Total payments	$	52,710	$	45,038	$	46,581
Schedule of future minimum purchase requirements under the terms of long-term supply contracts	'
		Due in
	(Dollars in thousands)	2014		2015		2016		2017		2018		Thereafter
	Raw and other materials	$	37,800	$	31,679	$	19,162	$	19,580	$	20,017	$	2,164
	Transportation	1,575		1,575		436		—		—		—
	Information systems and services	2,397		2,397		—		—		—		—
	Total contractual cash obligations	$	41,772	$	35,651	$	19,598	$	19,580	$	20,017	$	2,164

Shareholders_Equity_Table

Shareholders' Equity (Table)	12 Months Ended
	Dec. 31, 2013
Shareholders' Equity	'
Schedule of number of common shares repurchased at average purchase price	'
		2013			2012
	Shares repurchased	146,800			3,276,002
	Shares sold back	(340,334		)	—
	Average purchase price	$	20.37	-1	$	15.26
	(1)Average purchase price does not account for the shares sold back.

Stock_Compensation_Plans_Table

Stock Compensation Plans (Tables)	12 Months Ended
	Dec. 31, 2013
Stock Awards Vesting	'
Summary of status and activity of employee and non-employee directors' nonvested stock awards	'
				Weighted-					Weighted-				Weighted-
				Average					Average				Average
				Grant Date			ROC		Grant Date		TSR		Grant Date
		Restricted		Fair Value			Performance		Fair Value		Performance		Fair Value
		Stock Awards		(per share)			Stock Awards (a)		(per share)		Stock Awards(a)		(per share)
	Nonvested at January 1, 2013	197,844		$	14.92		56,588		$	14.35	67,723		$	17.7
	Granted	126,588		17.11			34,788		17.09		27,251		21.92
	Vested	(94,005	)	15.28			—		—		—		—
	Forfeited	(7,674	)	15.54			(32,988	)	14.62		(45,460	)	19.12
	Nonvested at December 31, 2013	222,753		$	15.99		58,388		$	15.83	49,514		$	18.72
	(a)         The number of shares shown for the performance stock awards is based on the target number of share awards.
Employee stock options	'
Stock Awards Vesting	'
Schedule of significant assumptions used to determine fair value	'
		Year Ended December 31
		2013		2012		2011
	Dividend yield	0.00%		0.00%		0.00%
	Expected volatility	31%		42-44%		46%
	Risk-free interest rates	0.78%		0.58-0.90%		2.19%
	Expected lives of options	4 years		4 years		4 years
Summary of status and activity of stock options	'
							Weighted-
							Average
							Remaining
				Weighted-			Contractual		Aggregate
				Average			Term		Intrinsic Value
		Shares		Exercise Price			(in years)		(in thousands)
	Outstanding at beginning of year	753,063		$	12.78
	Granted	343,080		17.17
	Exercised	(356,375	)	11.23
	Forfeited	(19,751	)	15.98
	Expired	(17,280	)	9.08
	Outstanding at December 31, 2013	702,737		$	15.7		5.63		$	3,508
	Exercisable at December 31, 2013	258,662		$	14.27		4.97		$	1,661
	Expected to vest at December 31, 2013	702,737		$	15.7		5.63		$	3,508
Non-employee director stock options	'
Stock Awards Vesting	'
Summary of status and activity of stock options	'
							Weighted-
							Average
							Remaining
				Weighted-			Contractual		Aggregate
				Average			Term		Intrinsic Value
		Shares		Exercise Price			(in years)		(in thousands)
	Outstanding at beginning of year	74,222		$	6.45
	Granted	—		—
	Exercised	(12,300	)	5.08
	Forfeited	—		—
	Expired	—		—
	Outstanding at December 31, 2013	61,922		$	6.73		2.29		$	803
	Exercisable at December 31, 2013	61,922		$	6.73		2.29		$	803
Performance stock awards | TSR Performance Stock Award	'
Stock Awards Vesting	'
Schedule of significant assumptions used to determine fair value	'
		Year Ended December 31
		2013		2012		2011
	Dividend yield	0.00%		0.00%		0.00%
	Expected volatility	37.80%		43.20%		65.40%
	Risk-free interest rates	0.34%		0.39%		1.15%
	Performance period	3 years		3 years		3 years
Schedule of historical vesting of TSR performance stock awards	'
	Year	TSR		Payout		Shares
		Performance
	Vested	Period		Level		Issued
	2011	2008-2010		97	%	16,781
	2012	2009-2011		52	%	8,528
	2013	2010-2012		0	%	—

Pensions_Tables

Pensions (Tables)	12 Months Ended
	Dec. 31, 2013
U.S. Plans	'
Pensions	'
Reconciliation of changes in the plans' benefit obligation, fair value of assets and funded status	'
	(Dollars in thousands)	2013			2012
	Change in Projected Benefit Obligations
	Projected benefit obligations at January 1	$	116,620		$	106,127
	Service cost	1,165			1,059
	Interest cost	4,423			4,796
	Actuarial (gain) loss	(14,471		)	12,083
	Benefits paid	(5,428		)	(3,343		)
	Settlement	—			(4,102		)
	Projected benefit obligations at December 31	102,309			116,620
	Change in Plan Assets
	Fair value of plan assets at January 1	88,184			82,970
	Actual return on plan assets	14,186			10,577
	Employer contributions	2,842			2,082
	Benefits paid	(5,428		)	(3,343		)
	Settlement	—			(4,102		)
	Fair value of plan assets at December 31	99,784			88,184
	Funded status at December 31	$	(2,525	)	$	(28,436	)
Schedule of amounts recognized in the Balance Sheets	'
	(Dollars in thousands)	2013			2012
	Amounts recognized in the Balance Sheets:
	Noncurrent asset	$	2,470		$	—
	Current liability — Accrued benefit cost	(82		)	(82		)
	Noncurrent liability — Accrued benefit cost	(4,913		)	(28,354		)
	Net amount recognized	$	(2,525	)	$	(28,436	)
Schedule of amounts recognized in accumulated other comprehensive income	'
	(Dollars in thousands)	2013			2012
	Accumulated prior service cost	$	89		$	164
	Accumulated net actuarial loss	20,752			46,267
	Net amount recognized, before tax effect	$	20,841		$	46,431
Schedule of assumptions used to determine benefit obligations	'
	Weighted average actuarial assumptions at December 31:	2013		2012
	Discount rate	4.88	%	3.92	%
	Rate of increase in compensation levels	3.5	%	4	%
Schedule of fair values of pension plans assets	'
		Fair Value Measurements at December 31, 2013
					Quoted
					Prices in
					Active
					Markets for			Significant			Significant
					Identical			Observable			Unobservable
	(Dollars in thousands)				Assets			Inputs			Inputs
	Asset Category	Total			(Level 1)			(Level 2)			(Level 3)
	Cash and Cash Equivalents	$	2,010		$	174		$	1,836		$	—
	Equity Securities
	Large Cap (a)	21,139			21,139			—			—
	Small/Mid Cap (b)	13,446			13,446			—			—
	Equities Blend (c)	715			715			—			—
	International Equity (d)	9,532			9,532			—			—
	Emerging Markets (e)	6.402			6,402			—			—
	Fixed Income Securities
	Corporate Bonds (f)	23,563			16,489			7,074			—
	Government Bonds (g)	11,490			10,820			670			—
	Mortgage/Asset Backed (h)	6,140			—			6,140
	Miscellaneous
	Commodities (i)	3,383			3,383
	Real Estate (j)	1,964			1,964
	Total	$	99,784		$	84,064		$	15,720		$	—
	(a)         This category consists of growth and value strategies investing primarily in the common stock of large capitalization companies located in the United States.  Growth oriented strategies seek companies within the Russell 1000 Growth Universe with above average earnings, growth, and revenue expectations.  Value oriented strategies seek companies within the Russell 1000 Value Universe that are undervalued relative to their intrinsic value.  These strategies are benchmarked against the Russell 1000 Growth and Value Indices, respectively.
	(b)         This category consists of growth and value strategies investing primarily in the common stock of mid and small capitalization companies located in the United States that are either undervalued relative to their intrinsic value or have above average growth and revenue expectations.  These strategies are benchmarked to the Russell 2500 Growth and Value Indices, respectively.
	(c)          This category invests in the common stock of primarily U.S. companies across the capitalization spectrum (Large, Mid, and Small Cap) that are undervalued relative to their intrinsic value or represent growth opportunities.  This strategy is benchmarked to the Russell 3000 Index.
	(d)         This category consists of international equity securities represented by 21 major MSCI indices from Europe, Australia and Southeast Asia. This strategy is benchmarked to the MSCI EAFE Index.
	(e)          This category invests in all types of capitalization companies operating in global emerging markets outside the United States. The strategy targets broad diversification across various economic sectors in 21 emerging economies.  This category is benchmarked to the MSCI Emerging Markets Index.
	(f)           This category invests primarily in investment grade corporate securities.  This category is benchmarked to the Barclays Aggregate Bond Index.
	(g)          This category includes securities and mutual funds which invest in a diversified portfolio of longer duration bonds.  The funds typically invest primarily in U.S. investment grade securities.  The portfolio has an average duration that normally varies within two years (plus or minus) of the benchmark.  This category is benchmarked to the Barclays Capital Long-Term Government/Credit Index.
	(h)         This category invests primarily in mortgage-backed securities which covers the mortgage backed securities component of the Barclays US Aggregate Bond Index.  This category is benchmarked against the Barclays Mortgage-Backed Securities Index.
	(i)             This fund invests in assets of commodity linked derivative instruments and fixed income securities.  The fund is benchmarked against the Dow Jones-UBS Commodity Index Total Return.
	(j)            This fund normally invests at least 80% of its assets in equity related securities of real estate companies and other real estate securities.  Under normal circumstances, the fund invests in at least three different countries and at least 40% of the total assets are in foreign securities.  This strategy is benchmarked to the Lipper Global Real Estate Funds Average.
		Fair Value Measurements at December 31, 2012
					Quoted
					Prices in
					Active
					Markets for			Significant			Significant
					Identical			Observable			Unobservable
	(Dollars in thousands)				Assets			Inputs			Inputs
	Asset Category	Total			(Level 1)			(Level 2)			(Level 3)
	Cash and Cash Equivalents	$	1,585		$	1,585		$	—		$	—
	Equity Securities
	All Cap (a)	9,126			9,126			—			—
	Large Cap (b)	20,820			20,820			—			—
	Small Cap Mutual Fund (c)	6,252			—			6,252			—
	Microcap Mutual Fund (d)	5,852			5,852			—			—
	International Mutual Fund (e)	15,884			15,884			—			—
	Fixed Income Securities
	Long Duration Mutual Fund (f)	24,370			24,370			—			—
	Emerging Markets Debt Mutual Fund (g)	4,295			4,295			—			—
	Total	$	88,184		$	81,932		$	6,252		$	—
	(a)         This category invests in the common stock of primarily U.S. companies across the capitalization spectrum (Large, Mid, and Small Cap) that are undervalued relative to their intrinsic value.  The strategy is benchmarked to the Russell 3000 Value Index.
	(b)         This category consists of Growth and Value strategies investing primarily in the common stock of large capitalization companies located in the United States.  Growth oriented strategies seek companies within the Russell 1000 Growth Universe with above average earnings, growth, and revenue expectations. Value oriented strategies seek companies within the Russell 1000 Value Universe that are undervalued relative to their intrinsic value. These strategies are benchmarked to the Russell 1000 Growth and Value Indices respectively.
	(c)          This category invests primarily in small capitalization U.S. companies that are either undervalued relative to their intrinsic value or that have above average earnings growth and revenue expectations. The smaller cap orientation of the strategy requires the investment manager to be cognizant of liquidity and capital restraints, which are monitored by the investment team on an ongoing basis. This strategy is benchmarked to the Russell 2000 Index.
	(d)         This category invests primarily in micro-capitalization U.S. companies that are undervalued relative to their intrinsic value. The smaller cap orientation of the strategy requires the investment managers to be cognizant of liquidity and capital restraints, which are monitored by the investment team on an ongoing basis. This strategy is benchmarked to the Russell Micro Cap Value Index.
	(e)          This category invests in all types of capitalization companies operating in both developed and emerging markets outside the United States. The strategy targets broad diversification across various economic sectors and seeks to achieve lower overall portfolio volatility by investing with complimentary active managers with varying risk characteristics. Total combined exposure to emerging markets typically ranges from 10% to 20%, with a maximum restriction of 40%. This category is benchmarked to the MSCI EAFE Index and the MSCI All Country World Index ex U.S.
	(f)           This category invests in a diversified portfolio of longer duration bonds.  The fund typically invests primarily in U.S. investment grade securities, but does have the ability to invest up to 10% in high yield (minimum credit rating of B), and up to 30% in non-U.S. denominated securities.  The portfolio has an average duration that normally varies within two years (plus or minus) of the benchmark.  This category is benchmarked to the Barclays Capital Long-Term Government/Credit Index.
	(g)          This category invests primarily in local currency denominated government debt securities of countries within the Emerging Markets. The strategy is broadly diversified by country and will invest in locally denominated corporate securities. This strategy is benchmarked to the JP Morgan GBI-EM Global Diversified Index.
Schedule of the projected benefit obligations, accumulated benefit obligations, and the fair value of plan assets	'
		Projected Benefit Obligation						Accumulated Benefit
		Exceeds the Fair Value of						Obligation Exceeds the Fair
		Plan’s Assets						Value of Plan’s Asset
	(Dollars in thousands)	2013			2012			2013			2012
	Projected benefit obligation	$	53,699		$	116,620		$	53,699		$	116,620
	Accumulated benefit obligation	$	50,188		$	111,625		$	50,188		$	111,625
	Fair value of plan assets	$	48,704		$	88,184		$	48,704		$	88,184
Schedule of expected cash flows for pension plans	'
		Pension Benefits
	Year	(Thousands)
	Employer contributions
	2014	$	1,526
	Benefit Payments
	2014	$	5,869
	2015	6,929
	2016	6,960
	2017	6,261
	2018	6,770
	2019 – 2023	36,676
Schedule of components of net periodic pension costs	'
		Year Ended December 31
	(Dollars in thousands)	2013			2012			2011
	Service cost	$	1,165		$	1,059		$	1,022
	Interest cost	4,423			4,796			4,942
	Expected return on assets	(6,660		)	(6,166		)	(6,669		)
	Prior service cost	74			74			75
	Net amortization	3,519			3,430			1,728
	Settlement	—			1,369			—
	Net periodic pension cost	$	2,521		$	4,562		$	1,098
Schedule of other changes in plan assets and benefit obligations recognized in other comprehensive income (loss)	'
		Year Ended December 31
	(Dollars in thousands)	2013			2012
	Current year actuarial (gain) loss	$	(21,997	)	$	7,672
	Amortization of actuarial loss	(3,519		)	(3,430		)
	Amortization of prior service cost	(74		)	(74		)
	Settlement	—			(1,369		)
	Total recognized in other comprehensive income (loss)	$	(25,590	)	$	2,799
	Total recognized in net periodic pension cost and other comprehensive income (loss)	$	(23,069	)	$	7,361
Schedule of estimated amounts that will be amortized from accumulated other comprehensive income into net periodic pension cost	'
	(Dollars in thousands)
	Prior service cost	$	74
	Net actuarial loss	950
	Total at December 31	$	1,024
Schedule of assumptions used in the measurement of net periodic pension cost	'
		2013		2012		2011
	Weighted average actuarial assumptions at December 31:
	Discount rate	3.92	%	4.67	%	5.26	%
	Expected annual return on plan assets	7.75	%	7.75	%	8	%
	Rate of increase in compensation levels	4	%	4	%	4	%
European Plans	'
Pensions	'
Reconciliation of changes in the plans' benefit obligation, fair value of assets and funded status	'
	(Dollars in thousands)	2013			2012
	Change in Projected Benefit Obligations
	Projected benefit obligations at January 1	$	42,417		$	33,469
	Service cost	314			148
	Interest cost	1,511			1,640
	Employee contributions	103			119
	Actuarial loss	1,178			5,203
	Benefits paid	(1,550		)	(1,254		)
	Settlement	(1,249		)	—
	Other	(1,689		)	1,689
	Foreign currency exchange rate changes	1,332			1,403
	Projected benefit obligations at December 31	42,367			42,417
	Change in Plan Assets
	Fair value of plan assets at January 1	28,177			24,414
	Actual return on plan assets	1,395			2,053
	Employer contributions	1,875			1,831
	Employee contributions	103			119
	Benefits paid	(1,550		)	(1,254		)
	Settlement	(1,249		)	—
	Foreign currency exchange rate changes	835			1,014
	Fair value of plan assets at December 31	29,586			28,177
	Funded Status at December 31	$	(12,781	)	$	(14,240	)
Schedule of amounts recognized in the Balance Sheets	'
	(Dollars in thousands)	2013			2012
	Amounts Recognized in the Balance Sheets:
	Noncurrent asset	$	603		$	1,013
	Current liability — Accrued benefit cost	(561		)	(590		)
	Noncurrent liability — Accrued benefit cost	(12,823		)	(14,663		)
	Net amount recognized	$	(12,781	)	$	(14,240	)
Schedule of amounts recognized in accumulated other comprehensive income	'
	(Dollars in thousands)	2013			2012
	Accumulated net actuarial loss	$	7,022		$	6,167
	Net amount recognized, before tax effect	$	7,022		$	6,167
Schedule of assumptions used to determine benefit obligations	'
		2013		2012
	Weighted average actuarial assumptions at December 31:
	Discount rate	3.92	%	3.95	%
	Rate of increase in compensation levels	3.5	%	3.5	%
Schedule of fair values of pension plans assets	'
		Fair Value Measurements at December 31, 2013
					Quoted
					Prices in
					Active
					Markets for			Significant			Significant
					Identical			Observable			Unobservable
	(Dollars in thousands)				Assets			Inputs			Inputs
	Asset Category	Total			(Level 1)			(Level 2)			(Level 3)
	Cash and Cash Equivalents	$	542		$	542		$	—		$	—
	Equity Securities
	M&G PP Discretionary Fund (a)	4,498			4,498			—			—
	Global Equity 60-40 Index (b)	5,667			5,667			—			—
	Fixed Income Securities
	Delta Lloyd Fixed Income (c)	4,207			—			—			4,207
	Corporate Bonds (d)	4,779			4,779			—			—
	Government Bonds (e)	6,384			6,384			—			—
	Real Estate (f)	2,034			2,034			—			—
	Insurance Reserves (g)	1,475			—			—			1,475
	Total	$	29,586		$	23,904		$	—		$	5,682
		Fair Value Measurements at December 31, 2012
					Quoted
					Prices in
					Active
					Markets for			Significant			Significant
					Identical			Observable			Unobservable
	(Dollars in thousands)				Assets			Inputs			Inputs
	Asset Category	Total			(Level 1)			(Level 2)			(Level 3)
	Cash and Cash Equivalents	$	993		$	993		$	—		$	—
	Equity Securities
	M&G PP Discretionary Fund (a)	2,103			2,103			—			—
	Global Equity 60-40 Index (b)	4,604			4,604			—			—
	Fixed Income Securities
	Delta Lloyd Fixed Income (c)	4,058			—			—			4,058
	Corporate Bonds (d)	10,067			10,067			—			—
	Government Bonds (e)	3,061			3,061			—			—
	Real Estate (f)	1,825			1,825			—			—
	Insurance Reserves (g)	1,466			—			—			1,466
	Total	$	28,177		$	22,653		$	—		$	5,524
	(a)         This fund invests in a mix of UK and overseas equity shares, bonds, property and cash. The fund is actively managed against its benchmark of the CAPS Balanced Pooled Fund Median. A prudent approach of diversification by both location and investment type is employed by the fund and both active stock selection and asset allocation are used to add value.
	(b)         This index fund invests 60% in the UK Equity Index Fund and 40% in overseas index funds. The overseas portion has a target allocation of 14% in North American funds, 14% in European funds (not including the UK), 7% in Japanese funds, and 5% in Pacific Basin funds (not including Japan).
	(c)          This category invests in 6 year Fixed Income investments with Delta Lloyd.
	(d)         This category invests in the M&G PP Discretionary Fund, the AAA Fixed interest - Over 15 Year Fund, and the M&G PP Long Dates Corporate Bond Fund. These funds, respectively, invest primarily in investment grade corporate bonds, as well as other debt instruments, including higher yielding corporate bonds, government debt, convertible and preferred stocks, money market instruments and equities; and in long-dated sterling denominated AAA-rated corporate bonds, as well as smaller holdings in gilts - both providing a fixed rate of interest.
	(e)          This category invests mainly in long term gilts through the M&G PP Super Long Index Linked Fund and the M&G PP Discretionary Fund.
	(f)           This category invests in the M&G UK Property Fund. The fund invests directly in commercial properties in the UK and is actively managed against its performance benchmark of the BNY Mellon CAPS Pooled Fund Property Median. The fund is well diversified investing in the retail, office, and industrial sectors of the market. A small portion of this category is also held in the M&G PP Discretionary Fund.
	(g)          This category invests in individual insurance policies in the name of the individual plan members.
Schedule of changes in fair value measurements using significant unobservable inputs	'
	(Dollars in thousands)	Delta Lloyd			Insurance
		Fixed Income			Reserves
	Balance at January 1, 2012	$	4,514		$	1,246
	Purchases	—			194
	Sales/Maturities	(502		)	(4		)
	Foreign currency translation	46			30
	Balance at December 31, 2012	4,058			1,466
	Purchases	814			160
	Sales/Maturities	(837		)	(211		)
	Foreign currency translation	172			60
	Balance at December 31, 2013	$	4,207		$	1,475
Schedule of the projected benefit obligations, accumulated benefit obligations, and the fair value of plan assets	'
		Projected Benefit Obligation						Accumulated Benefit
		Exceeds the Fair Value of						Obligation Exceeds the Fair
		Plan’s Assets						Value of Plan’s Asset
	(Dollars in thousands)	2013			2012			2013			2012
	Projected benefit obligation	$	31,485		$	33,022		$	31,485		$	33,022
	Accumulated benefit obligation	$	29,568		$	31,123		$	29,568		$	31,123
	Fair value of plan assets	$	18,101		$	17,769		$	18,101		$	17,769
Schedule of expected cash flows for pension plans	'
		Pension Benefits
	Year	(Thousands)
	Employer contributions
	2014	$	2,126
	Benefit Payments
	2014	$	3,297
	2015	1,602
	2016	1,231
	2017	1,527
	2018	1,443
	2019 – 2023	8,393
Schedule of components of net periodic pension costs	'
		Year Ended December 31
	(Dollars in thousands)	2013			2012			2011
	Service cost	$	314		$	148		$	155
	Interest cost	1,511			1,640			1,947
	Expected return on assets	(1,263		)	(1,232		)	(1,442		)
	Net amortization	203			15			68
	Settlement	279			—			—
	Special termination benefits	—			—			200
	Net periodic pension cost	$	1,044		$	571		$	928
Schedule of other changes in plan assets and benefit obligations recognized in other comprehensive income (loss)	'
		Year Ended December 31
	(Dollars in thousands)	2013			2012
	Current year actuarial loss	$	1,046		$	4,382
	Amortization of actuarial loss	(203		)	(15		)
	Settlement	(279		)	—
	Foreign currency exchange	292			296
	Total recognized in other comprehensive income	$	856		$	4,663
	Total recognized in net periodic pension cost and other comprehensive income	$	1,900		$	5,234
Schedule of estimated amounts that will be amortized from accumulated other comprehensive income into net periodic pension cost	'
	(Dollars in thousands)
	Total net actuarial loss at December 31	$	245
Schedule of assumptions used in the measurement of net periodic pension cost	'
		2013		2012		2011
	Weighted average actuarial assumptions at December 31:
	Discount rate	3.99	%	5	%	5.35	%
	Expected annual return on plan assets	4.91	%	4.92	%	6.03	%
	Rate of increase in compensation levels	3.5	%	3.5	%	3.5	%

Provision_for_Income_Taxes_Tab

Provision for Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2013
Provision for Income Taxes	'
Schedule of components of provision for income taxes	'
		Year Ended December 31
	(Dollars in thousands)	2013			2012			2011
	Current
	Federal	$	6,180		$	9,039		$	3,338
	State and local	1,739			526			462
	Foreign	8,632			4,056			12
		16,551			13,621			3,812
	Deferred
	Federal	5,950			(47		)	13,018		-1
	State and local	(248		)	178			597
	Foreign	(767		)	312			(261		)
		4,935			443			13,354
	Provision for income taxes	$	21,486		$	14,064		$	17,166
	(1)$5.5 million relates to the reversal of indirect benefits on uncertain tax benefits which lapsed due to the statute of limitations.
Schedule of the differences between U.S. federal statutory tax rate and the effective income tax rate	'
		Year Ended December 31
		2013		2012		2011
	U.S. federal statutory rate	35	%	35	%	35	%
	State income taxes, net of federal income tax benefit	0.8		2		2.1
	Tax rate differential on foreign income	(1.5	)	(2.0	)	(1.0	)
	Nonrecurring adjustments related to sale of foreign subsidiary	(2.2	)	2.8		—
	Permanent tax differences	(1.4	)	(1.9	)	(1.0	)
	Valuation allowance	1.5		1.5		—
	Tax statute expiration	(0.6	)	(0.8	)	(5.8	)
	Change in uncertain tax positions	0.3		0.6		0.6
	Other — net	0.1		0.5		0.5
	Effective income tax rate	32	%	37.7	%	30.4	%
Schedule of gross operating loss carryforwards and tax credit carryforwards	'
		Amount
	Type	(Thousands)			Expiration Date
	Foreign tax credits	$	1,063		2017
	Capital loss carryforwards	770			2018
	State tax credits(2)	2,476			2018-2027
	Operating loss carryforwards — federal	746			2029
	Operating loss carryforwards — state(1)	20,023			2014 – 2033
	Operating loss carryforwards — foreign	3,465			2017, 2018 – None(3)
	(1)Of the total state operating loss-carryforwards, approximately 88% expire in 2020 or later.
	(2)Of the total state tax credit carryforwards, approximately 99% expire in 2023 or later.
	(3) Of the total foreign tax credit carryforwards, approximately 6% have no expiration.
Schedule of components of deferred taxes	'
		December 31
	(Dollars in thousands)	2013			2012
	Deferred tax assets(1)
	Net operating loss and credit carryforwards(2)	$	5,548		$	5,263
	Accruals	11,198			10,957
	Inventories	12,271			8,636
	Pensions	4,725			15,892
	Valuation allowance	(988		)	(1,146		)
	Total deferred tax assets	32,754			39,602
	Deferred tax liabilities
	Property, plant and equipment	$	31,951		$	24,129
	Goodwill and other intangible assets	5,879			6,308
	U.S. liability on Belgian and German net deferred tax assets	1,248			669
	Total deferred tax liabilities	39,078			31,106
	Net deferred tax asset (liability)	$	(6,324	)	$	8,496
	(1)Uncertain tax liabilities of approximately $0.3 million and $0.2 million partially offset the net operating losses and credit carryforwards in 2013 and 2012, respectively.
	(2)Net indirect benefits on uncertain tax liabilities of approximately $1.0 million are included in the U.S. net operating loss and credit carryforwards in each 2013and 2012.
Schedule of reconciliation of the unrecognized income tax benefits	'
	(Dollars in thousands)	2013			2012			2011
	Balance at January 1	$	4,141		$	4,078		$	11,215
	Gross increases for tax positions of prior years	—			53			252
	Gross decreases for tax positions of prior years	(438		)	—			(84		)
	Gross increases for tax positions of current year	122			647			562
	Lapse of statute of limitations	(390		)	(637		)	(7,867		)
	Balance at December 31	$	3,435		$	4,141		$	4,078
Summary of tax years that remain subject to examination for the major jurisdictions where the Company conducts business	'
	Jurisdiction	Years
	United States	2003, 2005, 2008, 2010 – 2013
	Kentucky	2009 – 2013
	Pennsylvania	2010 – 2013
	Belgium	2011 – 2013
	Canada	2009 – 2013
	Germany	2010 – 2013
	United Kingdom	2010 – 2013
	Japan	2008 – 2013

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive Income (Loss) (Tables)	12 Months Ended
	Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss)	'
Schedule of accumulated other comprehensive income (loss)	'
		Foreign									Total Accumulated
		Currency			Pension						Other
		Translation			Benefit						Comprehensive
	(Dollars in thousands)	Adjustments			Adjustments			Derivatives			Income (Loss)
	Balance, January 1, 2013, net of tax	$	17,098		$	(33,718	)	$	93		$	(16,527	)
	Other comprehensive income before reclassifications	727			12,913			689			14,329
	Amounts reclassified from other comprehensive income (loss)	(1,032		)	2,355			(265		)	1,058
	Net current period other comprehensive income (loss)	(305		)	15,268			424			15,387
	Balance, December 31, 2013, net of tax	$	16,793		$	(18,450	)	$	517		$	(1,140	)
Schedule of amounts reclassified out of each component of accumulated other comprehensive income	'
	(Dollars in thousands)
	Details about Accumulated	Amount Reclassified from Accumulated			Affected Line Item in the Statement
	Other Comprehensive Income Components	Other Comprehensive Income(1)			where Net Income is Presented
	Derivatives:
	Foreign Exchange Contracts	$	1,018		Cost of products sold (excluding depreciation)
	Natural Gas Contracts	(555		)	Cost of products sold (excluding depreciation)
		463			Total before tax
		(198		)	Tax (expense) or benefit
		$	265		Net of tax
	Pension Benefit Adjustments:
	Prior-service costs	$	(74	)	-2
	Actuarial losses	(3,722		)	-2
		(3,796		)	Total before tax
		1,441			Tax (expense) or benefit
		$	(2,355	)	Net of tax
	Foreign Currency Translation Adjustments:
	Sale of foreign subsidiary (Note 2)	$	1,032		Restructuring (3)
		1,032			Total before tax
		—			Tax (expense) or benefit
		$	1,032		Net of tax
	Total reclassifications for the period ended December 31, 2013	$	(1,058	)	Net of tax
	(1)         Amounts in parentheses indicate debits to income/loss.
	(2)         These accumulated other comprehensive income (loss) components are included in the computation of net periodic pension cost.
	(3)         The adjustment for 2013 relates to the Company’s sale of its activated carbon manufacturing facility in Datong, China.

Derivative_Instruments_Tables

Derivative Instruments (Tables)	12 Months Ended
	Dec. 31, 2013
Derivative Instruments	'
Schedule of fair value of outstanding derivative contracts recorded as assets	'
				December 31,
	(Dollars in thousands)	Balance Sheet Locations		2013			2012
	Derivatives designated as hedging instruments under ASC 815:
	Foreign exchange contracts	Other current assets		$	850		$	545
	Natural Gas	Other current assets		189			—
	Foreign exchange contracts	Other assets		94			142
	Natural Gas	Other assets		13			—
	Total derivatives designated as hedging instruments under ASC 815			1,146			687
	Derivatives not designated as hedging instruments under ASC 815:
	Foreign exchange contracts	Other current assets		728			433
	Total asset derivatives			$	1,874		$	1,120
Schedule of fair value of outstanding derivative contracts recorded as liabilities	'
				December 31,
	(Dollars in thousands)	Balance Sheet Locations		2013			2012
	Derivatives designated as hedging instruments under ASC 815:
	Foreign exchange contracts	Accounts payable and accrued liabilities		$	391		$	191
	Natural gas contracts	Accounts payable and accrued liabilities		—			360
	Foreign exchange contracts	Accrued pension and other liabilities		27			61
	Total derivatives designated as hedging instruments under ASC 815			418			612
	Derivatives not designated as hedging instruments under ASC 815:
	Foreign exchange contracts	Accounts payable and accrued liabilities		5			34
	Total liability derivatives			$	423		$	646
Schedule of changes in accumulated OCI relating to derivative assets and liabilities that qualified for cash flow hedge accounting	'
		December 31
	(Dollars in thousands)	2013			2012
	Accumulated OCI derivative gain or (loss) at January 1	$	74		$	(1,359	)
	Effective portion of changes in fair value	1,461			338
	Reclassifications from accumulated OCI derivative to earnings	(463		)	1,065
	Foreign currency translation	(198		)	30
	Accumulated OCI derivative gain at December 31	$	874		$	74
	Derivatives in ASC 815 Cash Flow Hedging Relationships:
		Amount of Gain or (Loss)
		Recognized in OCI on Derivatives
		(Effective Portion)
		December 31,
	(Dollars in thousands)	2013			2012			2011
	Foreign Exchange Contracts	$	1,326		$	612		$	(22	)
	Natural Gas Contracts	135			(274		)	(1,247		)
	Total	$	1,461		$	338		$	(1,269	)
	Derivatives in ASC 815 Cash Flow Hedging Relationships:
				Amount of Gain or (Loss)
				Reclassified from Accumulated
		Location of Gain or		OCI in Income (Effective Portion)
		(Loss) Recognized in		December 31,
	(Dollars in thousands)	Income on Derivatives		2013			2012			2011
	Foreign Exchange Contracts	Cost of products sold (excluding depreciation)		$	1,018		$	530		$	(290	)
	Currency Swap	Interest expense		—			—			—
	Natural Gas Contracts	Cost of products sold (excluding depreciation)		(555		)	(1,595		)	(2,071		)
	Total			$	463		$	(1,065	)	$	(2,361	)
	Derivatives in ASC 815 Cash Flow Hedging Relationships:
				Amount of Gain or (Loss)
				Recognized in Income on
				Derivatives (Ineffective
				Portion and Amount
				Excluded from
		Location of		Effectiveness Testing)
		Gain or (Loss) Recognized in		December 31,
	(Dollars in thousands)	Income on Derivatives		2013			2012			2011
	Foreign Exchange Contracts	Other expense — net		$	198		$	(30	)	$	(75	)
	Total			$	198		$	(30	)	$	(75	)
Schedule of outstanding derivative contracts	'
		December 31,
	(in thousands except for mmbtu)	2013			2012			2011
	Natural gas contracts (mmbtu)	525,000			235,000			700,000
	Foreign exchange contracts	$	44,110		$	42,399		$	35,304
Schedule of fair value gains and losses on contracts not qualified for hedge accounting treatment recorded in earnings	'
				Amount of Gain or (Loss)
				Recognized in Income on
		Location of		Derivatives
		Gain or (Loss) Recognized in		December 31,
	(Dollars in thousands)	Income on Derivatives		2013			2012			2011
	Foreign Exchange Contracts (1)	Other expense - net		$	1,256		$	963		$	(189	)
	Total			$	1,256		$	963		$	(189	)
	(1)As of December 31, 2013, 2012,and 2011, these foreign exchange contracts were entered into and settled during the respective periods.
Schedule of gross and net amounts of derivative assets and liabilities	'
		December 31, 2013						December 31, 2012
		Fair			Fair Value			Fair Value			Fair Value
		Value of			of			of Assets			of Liabilities
		Assets			Liabilities
	Gross derivative amounts recognized in the balance sheet	$	1,874		$	423		$	1,120		$	646
	Gross derivative amounts not offset in the balance sheet that are eligible for offsetting
	Derivatives — foreign currency contracts	(423		)	(423		)	(286		)	(286		)
	Net amount	$	1,451		$	—		$	834		$	360

Basic_and_Diluted_Net_Income_P1

Basic and Diluted Net Income Per Common Share (Tables)	12 Months Ended
	Dec. 31, 2013
Basic and Diluted Net Income Per Common Share	'
Schedule of computation of basic and diluted net income per common share	'
		For the Year Ended
	(Dollars in thousands, except per share amounts)	2013		2012		2011
	Net income available to common shareholders	$	45,713	$	23,272	$	39,224
	Weighted Average Shares Outstanding
	Basic	53,897,834		56,304,636		56,243,015
	Effect of Dilutive Securities	773,195		530,924		750,933
	Diluted	54,671,029		56,835,560		56,993,948
	Basic net income per common share	$	0.85	$	0.41	$	0.7
	Diluted net income per common share	$	0.84	$	0.41	$	0.69

Segment_Information_Tables

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2013
Segment Information	'
Schedule of results of operations and total assets by segment	'
		Year Ended December 31
	(Dollars in thousands)	2013			2012			2011
	Net sales
	Activated Carbon and Service	$	482,278		$	485,755		$	486,468
	Equipment	54,935			66,050			46,274
	Consumer	10,726			10,450			8,730
	Consolidated net sales	$	547,939		$	562,255		$	541,472
		Year Ended December 31
	(Dollars in thousands)	2013			2012			2011
	Income (loss) from operations before amortization and restructuring charges
	Activated Carbon and Service	$	71,530		$	49,328		$	65,030
	Equipment	(2,620		)	702			(3,504		)
	Consumer	1,990			2,010			(2,537		)
		$	70,900		$	52,040		$	58,989
	Reconciling items:
	Amortization	(2,140		)	(1,968		)	(1,757		)
	Restructuring charges (Note 2)	129			(10,211		)	—
	Interest income	136			35			467
	Interest expense	(462		)	(80		)	—
	Other expense — net	(1,364		)	(2,480		)	(1,309		)
	Consolidated income before income taxes	$	67,199		$	37,336		$	56,390
		Year Ended December 31
	(Dollars in thousands)	2013			2012			2011
	Depreciation
	Activated Carbon and Service	$	24,882		$	22,578		$	20,959
	Equipment	1,486			1,352			1,332
	Consumer	430			422			289
		$	26,798		$	24,352		$	22,580
	Amortization	2,140			1,968			1,757
	Consolidated depreciation and amortization	$	28,938		$	26,320		$	24,337
		December 31
	(Dollars in thousands)	2013			2012			2011
	Total assets
	Activated Carbon and Service	$	527,430		$	510,550		$	493,793
	Equipment	55,558			60,191			53,216
	Consumer	7,090			7,028			5,981
	Consolidated total assets	$	590,078		$	577,769		$	552,990
		Year Ended December 31
	(Dollars in thousands)	2012			2011			2010
	Expenditures for Long-Lived Assets
	Activated Carbon and Service	$	25,885		$	56,291		$	68,533
	Equipment	3,325			550			752
	Consumer	347			385			1,103
	Consolidated property, plant and equipment expenditures	$	29,557	-1	$	57,226	-2	$	70,388	-3
	(1)         Includes $0.5 million which is included in accounts payable and accrued liabilities at December 31, 2013.
	(2)         Includes $1.5 million which is included in accounts payable and accrued liabilities at December 31, 2012.
	(3)         Includes $2.2 million which is included in accounts payable and accrued liabilities at December 31, 2011.
Schedule of net sales by product	'
		Year Ended December 31
	(Dollars in thousands)	2013			2012			2011
	Carbon products	$	460,681		$	465,885		$	466,046
	Capital equipment	49,036			61,588			40,650
	Equipment leasing	15,127			13,886			14,815
	Carbon cloth products	10,721			10,422			7,868
	Spare parts	5,899			4,462			5,624
	Home consumer products	5			28			862
	Other services	6,470			5,984			5,607
	Consolidated net sales	$	547,939		$	562,255		$	541,472
Schedule of net sales by geographic Information	'
		Year Ended December 31
	(Dollars in thousands)	2013			2012			2011
	Net sales
	United States	$	272,644		$	261,167		$	254,953
	Japan	60,804			71,141			73,335
	United Kingdom	40,215			37,991			32,948
	France	27,969			21,456			20,302
	Germany	18,784			20,120			20,513
	Canada	16,945			17,861			19,986
	China	15,832			15,179			10,369
	Belgium	10,690			10,112			11,419
	Singapore	9,364			10,380			6,661
	South Korea	7,364			20,178			12,546
	Switzerland	5,334			4,683			3,324
	Netherlands	5,283			6,009			6,861
	Spain	3,806			4,049			3,665
	Australia	3,775			3,214			6,424
	Denmark	3,639			4,142			4,178
	Other	45,491			54,573			53,988
	Consolidated net sales	$	547,939		$	562,255		$	541,472
Schedule of long-lived assets by geographic information	'
		December 31
	(Dollars in thousands)	2013			2012			2011
	Long-lived assets
	United States	$	169,786		$	161,806		$	133,176
	Belgium	64,567			66,077			64,051
	China	16,990			17,864			19,319
	United Kingdom	8,832			8,654			8,043
	Japan	6,334			7,908			9,152
	Canada	159			474			653
	Singapore	77			106			135
	Denmark	64			53			—
	Brazil	28			36			—
	Germany	12			15			20
	Consolidated long-lived assets	$	266,849		$	262,993		$	234,549

QUARTERLY_FINANCIAL_DATA_UNAUD1

QUARTERLY FINANCIAL DATA - UNAUDITED (Tables)	12 Months Ended
	Dec. 31, 2013
QUARTERLY FINANCIAL DATA - UNAUDITED	'
Schedule of quarterly financial data - unaudited	'
		2013								2012
	(Thousands except per share data)	1stQuarter		2nd Quarter		3rd Quarter		4th Quarter		1stQuarter		2nd Quarter		3rd Quarter(1)			4th Quarter(2)
	Net sales	$	135,040	$	140,432	$	139,375	$	133,092	$	136,608	$	148,403	$	135,467		$	141,777
	Net sales less cost of products sold (excluding depreciation)	$	42,625	$	46,375	$	46,374	$	45,603	$	42,782	$	45,947	$	36,923		$	44,221
	Net income (loss)	$	9,814	$	12,970	$	11,885	$	11,044	$	7,738	$	10,884	$	(4,453	)	$	9,103
	Common Stock Data:
	Basic:
	Net income (loss) per common share	$	0.18	$	0.24	$	0.22	$	0.2	$	0.14	$	0.19	$	(0.08	)	$	0.16
	Diluted:
	Net income (loss) per common share	$	0.18	$	0.24	$	0.22	$	0.2	$	0.14	$	0.19	$	(0.08	)	$	0.16
	Average common shares outstanding
	Basic	53,620		53,799		53,900		54,265		56,512		56,639		56,682			55,390
	Diluted	54,200		54,547		54,764		55,160		57,124		57,190		57,197			55,837
	(1)  Includes an $8.0 million, pre-tax, restructuring charge and a $1.7 million multi-employer plan charge (Refer to Notes 2 and 12 ).  Also includes a $1.7 million charge related to an agreement with the Company’s former Chief Executive Officer.
	(2) Includes a $2.2 million, pre-tax, restructuring charge (Refer to Note 2 of the Company’s consolidated financial statements contained in Item 8 of this Annual Report for further information).

Summary_of_Accounting_Policies2

Summary of Accounting Policies (Details)	12 Months Ended
	Dec. 31, 2013
	segment
Summary of Accounting Policies	'
Number of business segments	3
Land improvements and buildings | Minimum	'
Summary of Accounting Policies	'
Useful life	'15 years
Land improvements and buildings | Maximum	'
Summary of Accounting Policies	'
Useful life	'30 years
Furniture, machinery and equipment | Minimum	'
Summary of Accounting Policies	'
Useful life	'5 years
Furniture, machinery and equipment | Maximum	'
Summary of Accounting Policies	'
Useful life	'15 years
Customer capital | Minimum	'
Summary of Accounting Policies	'
Useful life	'5 years
Customer capital | Maximum	'
Summary of Accounting Policies	'
Useful life	'10 years
Vehicles	'
Summary of Accounting Policies	'
Useful life	'5 years
Computer hardware and software | Minimum	'
Summary of Accounting Policies	'
Useful life	'5 years
Computer hardware and software | Maximum	'
Summary of Accounting Policies	'
Useful life	'10 years

Summary_of_Accounting_Policies3

Summary of Accounting Policies (Details 2) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013
					Foreign subsidiaries	Foreign subsidiaries	Labor force concentration risk	Labor force concentration risk	Labor force concentration risk
							Collective bargaining agreements	Collective bargaining agreement that expired on July 31, 2013	Collective bargaining agreements that expire in 2014
Summary of Accounting Policies	'	'	'	'	'	'	'	'	'
Undistributed earnings of non-U.S. subsidiaries	$77,400,000	'	'	'	'	'	'	'	'
Summary of Accounting Policies	'	'	'	'	'	'	'	'	'
Percentage of labor force covered	'	'	'	'	'	'	28.00%	5.00%	5.00%
Cash deposits	'	'	'	'	'	'	'	'	'
Cash deposits with U.S. financial institutions in excess of federally insured limits	0	'	'	'	'	'	'	'	'
Cash and cash equivalents	$32,942,000	$18,161,000	$13,574,000	$33,992,000	$27,600,000	$16,000,000	'	'	'

Restructuring_Charges_Details

Restructuring Charges: (Details) (USD $)	3 Months Ended		12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Dec. 31, 2013	Dec. 31, 2012
Restructuring Charges	'	'	'	'
Restructuring (income) charges during period	'	'	($100,000)	$10,200,000
Restructuring reserve activity	'	'	'	'
Accrual at beginning of period	'	'	3,226,000	'
Restructuring charges	2,200,000	8,000,000	-129,000	10,211,000
Payments	'	'	-3,140,000	-1,616,000
Pension settlement	'	'	'	-1,369,000
Non-cash charges	'	'	578,000	-4,000,000
Accrual at end of period	3,226,000	'	535,000	3,226,000
Datong, China activated carbon manufacturing facility	'	'	'	'
Restructuring Charges	'	'	'	'
Impairment charges	'	3,600,000	'	'
Employee Termination Benefits	'	'	'	'
Restructuring reserve activity	'	'	'	'
Accrual at beginning of period	'	'	3,226,000	'
Restructuring charges	'	'	357,000	5,777,000
Payments	'	'	-3,048,000	-1,182,000
Pension settlement	'	'	'	-1,369,000
Accrual at end of period	3,226,000	'	535,000	3,226,000
Asset Write-offs	'	'	'	'
Restructuring reserve activity	'	'	'	'
Restructuring charges	'	'	'	4,000,000
Non-cash charges	'	'	'	-4,000,000
Gain on Sale	'	'	'	'
Restructuring reserve activity	'	'	'	'
Restructuring charges	'	'	-578,000	'
Non-cash charges	'	'	578,000	'
Other Costs	'	'	'	'
Restructuring reserve activity	'	'	'	'
Restructuring charges	'	'	92,000	434,000
Payments	'	'	-92,000	-434,000
Employees Impacted	'	'	'	'
Restructuring reserve activity	'	'	'	'
Number of employees remaining to be paid	'	'	67	'
Number of positions reduced	'	'	4	120
Number of employees to whom amount paid	'	'	-67	-53
Number of employees remaining to be paid	67	'	4	67
Restructuring charges	'	'	'	'
Restructuring Charges	'	'	'	'
Termination benefits	'	'	'	4,400,000
Restructuring charges | Datong, China activated carbon manufacturing facility	'	'	'	'
Restructuring Charges	'	'	'	'
Pretax gain on sale	'	'	600,000	'
Impairment charges	'	'	'	3,600,000
Restructuring charges | Belgium warehouse	'	'	'	'
Restructuring Charges	'	'	'	'
Impairment charges	'	'	'	400,000
Restructuring charges | Gain on Sale | Datong, China activated carbon manufacturing facility	'	'	'	'
Restructuring Charges	'	'	'	'
Release of foreign currency translation adjustments	'	'	1,000,000	'
Charge for the write-off of goodwill	'	'	$400,000	'

Inventories_Details

Inventories (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Inventories	'	'
Raw materials	$31,603,000	$29,353,000
Finished goods	77,914,000	77,813,000
Total	109,517,000	107,166,000
Reserves for obsolete and slow-moving items	$1,900,000	$1,800,000

Property_Plant_and_Equipment_D

Property, Plant and Equipment (Details) (USD $)

12 Months Ended

3 Months Ended

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Sep. 30, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Datong, China activated carbon manufacturing facility

Land and improvements

Land and improvements

Buildings

Buildings

Machinery, equipment and customer capital

Machinery, equipment and customer capital

Computer hardware and software

Computer hardware and software

Furniture and vehicles

Furniture and vehicles

Construction-in-progress

Construction-in-progress

Property, Plant and Equipment

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Property, plant and equipment, gross

$624,865,000

$596,290,000

'

'

$27,731,000

$24,625,000

$70,433,000

$69,821,000

$462,300,000

$405,774,000

$26,816,000

$21,267,000

$9,749,000

$8,891,000

$27,836,000

$65,912,000

Less accumulated depreciation

-358,016,000

-333,297,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net

266,849,000

262,993,000

234,549,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Impairment charge

'

'

'

3,600,000

'

'

'

'

'

'

'

'

'

'

'

'

Depreciation expense

26,798,000

24,352,000

22,580,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Repair and maintenance expenses

$16,400,000

$18,400,000

$15,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Goodwill_and_Other_Identifiabl2

Goodwill and Other Identifiable Intangible Assets (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
			Activated Carbon and Service Segment	Activated Carbon and Service Segment	Equipment Segment	Equipment Segment	Consumer Segment	Consumer Segment	Consumer Segment
Segment information	'	'	'	'	'	'	'	'	'
Balance on the beginning of the period	$27,030	$26,839	$20,310	$20,167	$6,660	$6,612	$60	$60	$60
Restructuring	-419	'	-419	'	'	'	'	'	'
Foreign currency translation	-59	191	70	143	-129	48	'	'	'
Balance on the end of the period	$26,552	$27,030	$19,961	$20,310	$6,531	$6,660	$60	$60	$60

Goodwill_and_Other_Identifiabl3

Goodwill and Other Identifiable Intangible Assets (Details 2) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Goodwill & Intangible Assets	'	'	'
Weighted Average Amortization Period	'12 years 10 months 24 days	'13 years 1 month 6 days	'
Gross Carrying Amount	$23,178	$22,642	'
Foreign Exchange	-286	-107	'
Accumulated Amortization	-17,290	-15,147	'
Net Carrying Amount	5,602	7,388	'
Amortization expense	2,140	1,968	1,757
Estimated amortization expense to be recognized during the next five years	'	'	'
2014	2,026	'	'
2015	1,360	'	'
2016	1,132	'	'
2017	333	'	'
2018	141	'	'
Patents	'	'	'
Goodwill & Intangible Assets	'	'	'
Weighted Average Amortization Period	'20 years	'20 years	'
Gross Carrying Amount	676	676	'
Accumulated Amortization	-592	-548	'
Net Carrying Amount	84	128	'
Customer Relationships	'	'	'
Goodwill & Intangible Assets	'	'	'
Weighted Average Amortization Period	'15 years 10 months 24 days	'15 years 10 months 24 days	'
Gross Carrying Amount	10,450	10,450	'
Foreign Exchange	-209	-223	'
Accumulated Amortization	-8,777	-8,311	'
Net Carrying Amount	1,464	1,916	'
Product Certification	'	'	'
Goodwill & Intangible Assets	'	'	'
Weighted Average Amortization Period	'5 years 4 months 24 days	'5 years 4 months 24 days	'
Gross Carrying Amount	7,905	7,369	'
Foreign Exchange	-34	-3	'
Accumulated Amortization	-5,237	-3,917	'
Net Carrying Amount	2,634	3,449	'
Unpatented Technology	'	'	'
Goodwill & Intangible Assets	'	'	'
Weighted Average Amortization Period	'18 years 4 months 24 days	'18 years 4 months 24 days	'
Gross Carrying Amount	3,183	3,183	'
Accumulated Amortization	-2,457	-2,191	'
Net Carrying Amount	726	992	'
Licenses	'	'	'
Goodwill & Intangible Assets	'	'	'
Weighted Average Amortization Period	'20 years	'20 years	'
Gross Carrying Amount	964	964	'
Foreign Exchange	-43	119	'
Accumulated Amortization	-227	-180	'
Net Carrying Amount	$694	$903	'

Product_Warranties_Details

Product Warranties (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Product Warranties	'	'
Warranty period from the shipment date	'18 months	'
Warranty period from the project startup date	'12 months	'
Change in warranty reserve	'	'
Beginning Balance	$2,072	$1,624
Payments and replacement product	-756	-801
Additions to warranty reserve for warranties issued during the period	916	1,249
Change in the warranty reserve for pre-existing warranties	-36	'
Ending Balance	$2,196	$2,072

Borrowing_Arrangements_Details

Borrowing Arrangements (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Short-term Debt	'	'
Short-term debt	$2,172	$19,565
Japanese Working Capital Loan	'	'
Short-term Debt	'	'
Short-term debt	1,900	18,611
Japanese Term Loan	'	'
Short-term Debt	'	'
Short-term debt	'	954
China credit facility	'	'
Short-term Debt	'	'
Short-term debt	$272	'

Borrowing_Arrangements_Details1

Borrowing Arrangements (Details 2) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Long-term Debt	'	'
Total	$32,114	$44,408
U.S. Credit Facility	'	'
Long-term Debt	'	'
Total	26,250	44,250
Japanese Term Loan	'	'
Long-term Debt	'	'
Total	5,699	'
Belgian Loan Borrowings	'	'
Long-term Debt	'	'
Total	$165	$158

Borrowing_Arrangements_Details2

Borrowing Arrangements (Details 3)

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

10-May-13

10-May-13

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Nov. 06, 2013

Dec. 31, 2013

Nov. 06, 2013

Nov. 06, 2013

Nov. 06, 2013

Nov. 06, 2013

Nov. 06, 2013

Dec. 31, 2013

Nov. 06, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Nov. 06, 2013

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Apr. 13, 2011

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Nov. 30, 2009

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Japanese Term Loan due March 2013

Japanese Term Loan due March 2013

Japanese Term Loan due May 2017

Japanese Term Loan due May 2017

Japanese Term Loan due May 2017

Japanese Term Loan due May 2017

Japanese Term Loan due May 2017

Credit Agreement

Credit Agreement

Credit Agreement

Credit Agreement

Credit Agreement

Credit Agreement

Credit Agreement

Credit Agreement

Credit Agreement

Credit Agreement

Credit Agreement

Credit Agreement

Credit Agreement

Credit Agreement

Credit Agreement

Credit Agreement

Credit Agreement

Credit Agreement

Prior Credit Facility

Prior Credit Facility

Prior Credit Facility

Prior Credit Facility

Prior Credit Facility

Prior Credit Facility

Prior Credit Facility

Prior Credit Facility

Belgian Loan

Belgian Loan

Belgian Loan

Belgian Loan

Belgian Loan

Belgian Loan

Belgian Loan

Belgian credit facility

Belgian credit facility

Belgian credit facility

Belgian credit facility

United Kingdom credit facility

United Kingdom credit facility

United Kingdom credit facility

Japanese working capital loan

Japanese working capital loan

Japanese working capital loan

Japanese working capital loan

Japanese working capital loan

Chinese Credit Facility

Chinese Credit Facility

Chinese Credit Facility

Chinese Credit Facility

CCJ

CCJ

CCJ

CCJ

CCJ

Uncollateralized Overnight Call Rate

Uncollateralized Overnight Call Rate

USD ($)

Minimum

Maximum

Permitted dividends

Permitted dividends

Revolving credit facility

Revolving credit facility

Revolving credit facility

Standby or letters of credit for trade

Swing loans

Loans or letters of credit in foreign denominated currencies

Delayed Draw Term Loans

Delayed Draw Term Loans

Delayed Draw Term Loans

Base rate borrowings

Base rate borrowings

Base rate borrowings

LIBOR-based borrowings

USD ($)

USD ($)

Minimum

Maximum

Base rate borrowings

Base rate borrowings

Base rate borrowings

LIBOR-based borrowings

USD ($)

EUR (€)

USD ($)

EUR (€)

EUR (€)

EUR (€)

EUR (€)

Bank guarantees

Bank guarantees

GBP (£)

Bank guarantees

Bank guarantees

CCJ

CCJ

CCJ

CCJ

Prime rate

USD ($)

CNY

USD ($)

CNY

USD ($)

JPY (¥)

USD ($)

JPY (¥)

JPY (¥)

CCJ

CCJ

Minimum

Maximum

USD ($)

USD ($)

Maximum

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Maximum

Prime rate

Overnight federal funds rate

LIBOR rate

LIBOR rate

Prime rate

Overnight federal funds rate

LIBOR rate

LIBOR rate

EUR (€)

EUR (€)

GBP (£)

GBP (£)

USD ($)

JPY (¥)

USD ($)

JPY (¥)

CCJ

USD ($)

item

item

Borrowing arrangements

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maximum borrowing capacity

'

'

'

'

¥ 1,000,000,000

'

'

'

'

'

'

'

$225,000,000

'

'

$75,000,000

$15,000,000

$50,000,000

$75,000,000

'

'

'

'

'

'

'

$125,000,000

'

'

'

'

'

'

'

'

'

'

'

'

€ 6,000,000

€ 2,000,000

'

'

'

£ 600,000

'

'

'

¥ 1,500,000,000

'

'

'

$1,600,000

10,000,000

'

'

Bond installment increments for drawing on the loan

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

120,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of plant expansion investment that installment draw downs are based upon

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

25.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of extensions allowed for additional maturity period

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Additional maturity period

'

'

'

'

'

'

'

'

'

'

'

'

'1 year

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Aggregate increase in borrowing capacity that may be requested

'

'

'

'

'

'

'

'

'

'

'

'

75,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Availability under the credit facility

'

'

'

'

'

'

'

'

'

'

50,000,000

'

'

196,600,000

'

'

'

'

'

75,000,000

'

'

'

'

'

'

122,800,000

'

'

'

'

'

'

'

'

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Ratio of debt to earnings before interest, taxes, depreciation and amortization

'

'

'

'

'

'

'

'

'

'

'

275.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maturity period

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'7 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Borrowing period

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'2 years

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of term loans

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

3

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Minimum borrowing

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

15,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Basis for variable interest rate

'

'

'

'

'

'Uncollateralized Overnight Call Rate

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'Agent prime rate

'daily federal funds open rate

'daily LIBOR rate

'Published Rate divided by 1.00 - LIBOR Reserve Percentage

'

'

'

'

'lender prime rate

'weighted average federal funds rate

'daily LIBOR

'one, two, three or six month LIBOR

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'Short-term Prime Rate

'

'

'

'

Margin added to variable rate (as a percent)

'

'

'

'

'

0.60%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.50%

1.00%

'

'

'

'

'

'

3.00%

2.75%

1.25%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Rate of interest at balance sheet date (as a percent)

'

'

'

'

'

'

0.70%

'

1.17%

3.25%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.25%

1.50%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1.48%

5.32%

5.32%

'

'

Debt issuance costs

'

'

'

'

'

'

'

700,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amount outstanding

1,000,000

82,000,000

5,700,000

600,000,000

'

'

'

'

'

'

'

'

'

26,300,000

'

'

'

'

'

0

'

'

'

'

'

'

44,300,000

'

'

'

'

'

'

'

'

200,000

120,000

200,000

120,000

'

0

0

1,000,000

1,200,000

'

400,000

400,000

1,900,000

200,000,000

18,600,000

1,600,000,000

'

300,000

1,700,000

0

0

Deferred issuance costs written-off

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest rate (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5.35%

5.35%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Quarterly nonrefundable commitment fee payable (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

0.15%

'

'

'

'

'

0.15%

'

'

'

'

'

'

0.25%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Principal amount

$7,700,000

¥ 722,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Borrowing_Arrangements_Details3

Borrowing Arrangements (Details 4) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Borrowing Arrangements	'	'	'
Liability to make principal payments on debt outstanding in 2014	$2,200,000	'	'
Liability to make principal payments on debt outstanding in 2017	5,700,000	'	'
Liability to make principal payments on debt outstanding in 2018	26,400,000	'	'
Interest Expense	'	'	'
Interest expense	462,000	80,000	'
Interest costs capitalized	$400,000	$700,000	$1,000,000

Fair_Value_Measurements_Detail

Fair Value Measurements (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Fair Value Measurement	'	'
Derivative assets	$1,874	$1,120
Derivative liabilities	-423	-646
Total Fair Value | U.S. credit facility	'	'
Fair Value Measurement	'	'
Debt instrument	-26,250	-44,250
Total Fair Value | China credit facility	'	'
Fair Value Measurement	'	'
Debt instrument	-272	'
Total Fair Value | Japanese working capital loan	'	'
Fair Value Measurement	'	'
Debt instrument	-1,900	-18,611
Total Fair Value | Japanese term loan	'	'
Fair Value Measurement	'	'
Debt instrument	-5,699	-954
Total Fair Value | Other loans	'	'
Fair Value Measurement	'	'
Debt instrument	-165	-158
Level 2 | U.S. credit facility	'	'
Fair Value Measurement	'	'
Debt instrument	-26,250	-44,250
Level 2 | China credit facility	'	'
Fair Value Measurement	'	'
Debt instrument	-272	'
Level 2 | Japanese working capital loan	'	'
Fair Value Measurement	'	'
Debt instrument	-1,900	-18,611
Level 2 | Japanese term loan	'	'
Fair Value Measurement	'	'
Debt instrument	-5,699	-954
Level 2 | Other loans	'	'
Fair Value Measurement	'	'
Debt instrument	-165	-158
Recurring | Total Fair Value	'	'
Fair Value Measurement	'	'
Derivative assets	1,874	1,120
Derivative liabilities	-423	-646
Acquisition earn-out liability	-850	-1,300
Recurring | Level 2	'	'
Fair Value Measurement	'	'
Derivative assets	1,874	1,120
Derivative liabilities	-423	-646
Acquisition earn-out liability	-850	-1,300
Carrying Value	'	'
Fair Value Measurement	'	'
Derivative assets	1,874	1,120
Derivative liabilities	-423	-646
Acquisition earn-out liability	-850	-1,300
Carrying Value | U.S. credit facility	'	'
Fair Value Measurement	'	'
Debt instrument	-26,250	-44,250
Carrying Value | China credit facility	'	'
Fair Value Measurement	'	'
Debt instrument	-272	'
Carrying Value | Japanese working capital loan	'	'
Fair Value Measurement	'	'
Debt instrument	-1,900	-18,611
Carrying Value | Japanese term loan	'	'
Fair Value Measurement	'	'
Debt instrument	-5,699	-954
Carrying Value | Other loans	'	'
Fair Value Measurement	'	'
Debt instrument	($165)	($158)

Fair_Value_Measurements_Detail1

Fair Value Measurements (Details 2) (USD $)	Dec. 30, 2012	Dec. 31, 2012	Dec. 31, 2012
	Carrying Value	Nonrecurring	Nonrecurring
		Restructuring charges	Level 3
Fair Value Measurement	'	'	'
Long-lived assets	$4,700,000	'	$700,000
Charge to write down to fair value	'	$4,000,000	'

Commitments_Details

Commitments (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Future minimum rental payments required under operating leases	'	'	'
2014	$6,900,000	'	'
2015	4,500,000	'	'
2016	3,000,000	'	'
2017	2,300,000	'	'
2018	1,300,000	'	'
Thereafter	1,600,000	'	'
Total rental expense on operating leases	7,600,000	7,900,000	9,100,000
Long-term supply contracts	'	'	'
Total payments	52,710,000	45,038,000	46,581,000
Future minimum purchase requirements	'	'	'
2014	41,772,000	'	'
2015	35,651,000	'	'
2016	19,598,000	'	'
2017	19,580,000	'	'
2018	20,017,000	'	'
Thereafter	2,164,000	'	'
Raw and other materials	'	'	'
Long-term supply contracts	'	'	'
Total payments	40,170,000	30,802,000	33,953,000
Future minimum purchase requirements	'	'	'
2014	37,800,000	'	'
2015	31,679,000	'	'
2016	19,162,000	'	'
2017	19,580,000	'	'
2018	20,017,000	'	'
Thereafter	2,164,000	'	'
Transportation	'	'	'
Long-term supply contracts	'	'	'
Total payments	9,794,000	9,731,000	8,782,000
Future minimum purchase requirements	'	'	'
2014	1,575,000	'	'
2015	1,575,000	'	'
2016	436,000	'	'
Information systems and services	'	'	'
Long-term supply contracts	'	'	'
Total payments	2,746,000	4,505,000	3,846,000
Future minimum purchase requirements	'	'	'
2014	2,397,000	'	'
2015	$2,397,000	'	'

Shareholders_Equity_Details

Shareholders' Equity (Details) (USD $)

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Nov. 19, 2012

Dec. 31, 2000

Sep. 30, 2013

Nov. 20, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

In Millions, except Share data, unless otherwise specified

Common stock

Preferred stock purchase rights

Preferred stock purchase rights

Preferred stock purchase rights

Stock buyback program 2000

Stock buyback program 2000

Accelerated Share Repurchase program 2012

Accelerated Share Repurchase program 2012

Accelerated Share Repurchase program 2012

Accelerated Share Repurchase program 2012

Share repurchase program addition December 2013

Share repurchase program addition December 2013

Newly created series of preferred stock

Common stock

item

Shareholders' Equity

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maximum number of shares authorized for purchases under the program

'

'

'

'

'

'

'

500,000

'

'

'

'

'

'

Total shares purchased

6,242,326

6,415,176

'

'

'

'

11,300

'

'

'

'

'

'

'

Purchase price of stock repurchased recorded as a reduction in stockholder's equity

'

'

'

'

'

'

'

'

'

$50

'

'

'

'

Available value of shares authorized for repurchase under the Program

'

'

'

'

'

'

'

'

'

'

'

'

$150

'

Shares repurchased

'

'

'

'

'

'

'

'

'

3,276,002

'

3,276,002

'

146,800

Shares sold back

'

'

340,334

'

'

'

'

'

340,334

'

340,334

'

'

'

Average purchase price (in dollars per share)

'

'

'

'

'

'

'

'

'

'

'

$15.26

'

$20.37

Number of preferred share purchase rights held by shareholders for each share of common stock owned

'

'

'

1

'

'

'

'

'

'

'

'

'

'

Number of shares of preferred stock that a holder is entitled to purchase

'

'

'

'

0.0001

'

'

'

'

'

'

'

'

'

Purchase price per unit (in dollars per share)

'

'

'

'

$35

'

'

'

'

'

'

'

'

'

Minimum beneficial ownership percentage required to exercise the rights

'

'

'

10.00%

'

'

'

'

'

'

'

'

'

'

Minimum beneficial ownership percentage of certain institutional investors for exercise of rights

'

'

'

15.00%

'

'

'

'

'

'

'

'

'

'

Value of stock called by rights as multiple of exercise price of rights

'

'

'

'

'

2

'

'

'

'

'

'

'

'

Stock_Compensation_Plans_Detai

Stock Compensation Plans (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Stock Awards Vesting	'	'	'
Number of plans	1	'	'
Stock Options	'	'	'
Stock Awards Vesting	'	'	'
Total grant date fair value of options granted	$1,500,000	$1,500,000	$1,000,000
Dividend yield (as a percent)	0.00%	0.00%	0.00%
Expected volatility, minimum (as a percent)	'	42.00%	'
Expected volatility, maximum (as a percent)	'	44.00%	'
Expected volatility (as a percent)	31.00%	'	46.00%
Risk-free interest rates, minimum (as a percent)	'	0.58%	'
Risk-free interest rates, maximum (as a percent)	'	0.90%	'
Risk-free interest rates (as a percent)	0.78%	'	2.19%
Expected lives of options	'4 years	'4 years	'4 years
Stock Options | Minimum	'	'	'
Stock Awards Vesting	'	'	'
Expiration period	'7 years	'	'
Stock Options | Maximum	'	'	'
Stock Awards Vesting	'	'	'
Expiration period	'10 years	'	'
Non-employee director stock options	'	'	'
Stock Awards Vesting	'	'	'
Exercisable term	'6 months	'	'
Expiration period	'10 years	'	'
2008 Equity Incentive Plan	'	'	'
Stock Awards Vesting	'	'	'
Maximum number of shares available for grants	2,000,000	'	'
2008 Equity Incentive Plan | Minimum	'	'	'
Stock Awards Vesting	'	'	'
Expiration period	'7 years	'	'
2008 Equity Incentive Plan | Maximum	'	'	'
Stock Awards Vesting	'	'	'
Expiration period	'10 years	'	'
2008 Equity Incentive Plan | Incentive Stock Options	'	'	'
Stock Awards Vesting	'	'	'
Maximum number of shares available for grants	1,500,000	'	'
2008 Equity Incentive Plan | Incentive Stock Options | Ten percent employee | Minimum	'	'	'
Stock Awards Vesting	'	'	'
Exercise price expressed as a percentage of fair market value	110.00%	'	'
Employee Stock Option Plan	'	'	'
Stock Awards Vesting	'	'	'
Maximum number of shares available for grants	8,238,640	'	'
Employee Stock Option Plan | Minimum	'	'	'
Stock Awards Vesting	'	'	'
Exercise price expressed as a percentage of fair market value	100.00%	'	'
Employee Stock Option Plan | Incentive Stock Options	'	'	'
Stock Awards Vesting	'	'	'
Expiration period	'10 years	'	'
Employee Stock Option Plan | Incentive Stock Options | Minimum	'	'	'
Stock Awards Vesting	'	'	'
Exercisable term	'6 months	'	'
Non-Employee Director's Stock Option Plan	'	'	'
Stock Awards Vesting	'	'	'
Total grant date fair value of options granted	$25,000	'	'

Stock_Compensation_Plans_Detai1

Stock Compensation Plans (Details 2) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Employee stock options	'	'	'
Options	'	'	'
Outstanding at the beginning of year (in shares)	753,063	'	'
Granted (in shares)	343,080	'	'
Exercised (in shares)	-356,375	'	'
Forfeited (in shares)	-19,751	'	'
Expired (in shares)	-17,280	'	'
Outstanding at the end of year (in shares)	702,737	753,063	'
Exercisable at the end of the period (in shares)	258,662	'	'
Expected to vest at the end of the period (in shares)	702,737	'	'
Weighted-Average Exercise Price	'	'	'
Outstanding at the beginning of year (in dollars per share)	$12.78	'	'
Granted (in dollars per share)	$17.17	'	'
Exercised (in dollars per share)	$11.23	'	'
Forfeited (in dollars per share)	$15.98	'	'
Expired (in dollars per share)	$9.08	'	'
Outstanding at the end of year (in dollars per share)	$15.70	$12.78	'
Exercisable at the end of the period (in dollars per share)	$14.27	'	'
Expected to vest at the end of the period (in dollars per share)	$15.70	'	'
Weighted-Average Remaining Contractual Term	'	'	'
Outstanding at the end of the period	'5 years 7 months 17 days	'	'
Exercisable at the end of the period	'4 years 11 months 19 days	'	'
Expected to vest at the end of the period	'5 years 7 months 17 days	'	'
Aggregate Intrinsic Value	'	'	'
Outstanding at the end of the period	$3,508,000	'	'
Exercisable at the end of the period	1,661,000	'	'
Expected to vest at the end of the period (in dollars)	3,508,000	'	'
Weighted-average grant date fair value per share of options granted (in dollars per share)	$4.51	$5.28	$5.47
Total grant date fair value of options granted	1,500,000	1,500,000	1,000,000
Weighted-average grant date fair value options vested (in dollars per share)	$5.32	$5.86	$6.79
Total grant date fair value of options vested	1,000,000	700,000	500,000
Non-employee director stock options	'	'	'
Options	'	'	'
Outstanding at the beginning of year (in shares)	74,222	'	'
Exercised (in shares)	-12,300	'	'
Outstanding at the end of year (in shares)	61,922	'	'
Exercisable at the end of the period (in shares)	61,922	'	'
Weighted-Average Exercise Price	'	'	'
Outstanding at the beginning of year (in dollars per share)	$6.45	'	'
Exercised (in dollars per share)	$5.08	'	'
Outstanding at the end of year (in dollars per share)	$6.73	'	'
Exercisable at the end of the period (in dollars per share)	$6.73	'	'
Weighted-Average Remaining Contractual Term	'	'	'
Outstanding at the end of the period	'2 years 3 months 14 days	'	'
Exercisable at the end of the period	'2 years 3 months 14 days	'	'
Aggregate Intrinsic Value	'	'	'
Outstanding at the end of the period	803,000	'	'
Exercisable at the end of the period	803,000	'	'
Employee and non-employee director stock options	'	'	'
Aggregate Intrinsic Value	'	'	'
Total intrinsic value of stock options exercised	2,500,000	1,900,000	2,700,000
Cash received from the exercise of options	$4,100,000	$1,600,000	$2,100,000

Stock_Compensation_Plans_Detai2

Stock Compensation Plans (Details 3) (USD $)

12 Months Ended

1 Months Ended

12 Months Ended

In Millions, except Share data, unless otherwise specified

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2011

Dec. 31, 2012

Dec. 31, 2013

Feb. 28, 2014

Dec. 31, 2013

Restricted Stock Awards

Restricted Stock Awards

Performance Stock Awards

Performance Stock Awards

Performance Stock Awards

Performance Stock Awards

Performance Stock Awards

Performance Stock Awards

Performance Stock Awards

Performance Stock Awards

Performance Stock Awards

Performance Stock Awards

Performance Stock Awards

Performance Stock Awards

Performance Stock Awards

Performance Stock Awards

Performance Stock Awards

Time-vested

TSR Performance Stock Award

TSR Performance Stock Award

TSR Performance Stock Award

TSR Performance Stock Award

TSR Performance Stock Award

ROC Performance Stock Awards

ROC Performance Stock Awards

ROC Performance Stock Awards

ROC Performance Stock Awards

ROC Performance Stock Awards

Period 2008-2010

Period 2009-2011

Period 2010-2012

Performance stock award granted in 2011

Performance stock award granted in 2011

Minimum

Maximum

Minimum

Maximum

TSR Performance Stock Award

TSR Performance Stock Award

TSR Performance Stock Award

TSR Performance Stock Award

TSR Performance Stock Award

Stock Awards Vesting

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Payout Level (as a percent)

'

'

'

'

'

0.00%

200.00%

'

'

'

0.00%

200.00%

97.00%

52.00%

0.00%

93.00%

'

Dividend yield (as a percent)

'

'

0.00%

0.00%

0.00%

'

'

'

'

'

'

'

'

'

'

'

'

Expected volatility (as a percent)

'

'

37.80%

43.20%

65.40%

'

'

'

'

'

'

'

'

'

'

'

'

Risk-free interest rates (as a percent)

'

'

0.34%

0.39%

1.15%

'

'

'

'

'

'

'

'

'

'

'

'

Vesting or performance period

'

'3 years

'3 years

'3 years

'3 years

'

'

'3 years

'

'

'

'

'

'

'

'

'3 years

Shares Issued (vested)

94,005

'

'

'

'

'

'

'

0

0

'

'

16,781

8,528

'

8,376

'

Expense recognized

'

'

'

'

'

'

'

$0

$0

$0

'

'

'

'

'

'

'

Stock_Compensation_Plans_Detai3

Stock Compensation Plans (Details 4) (USD $)	12 Months Ended
In Millions, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Nonvested stock awards, Weighted-Average Grant Date Fair Value	'	'	'
Income tax benefit related to stock-based compensation	$1	$0.90	$0.90
Future compensation cost related to nonvested awards	3.7	'	'
Weighted-average period over which future compensation cost is expected to be recognized	'2 years	'	'
Selling, general and administrative expense	'	'	'
Nonvested stock awards, Weighted-Average Grant Date Fair Value	'	'	'
Share-based compensation expense	3.1	2.4	2.6
Restricted Stock Awards	'	'	'
Summary of non-vested stock awards	'	'	'
Nonvested at the beginning of the period (in shares)	197,844	'	'
Granted (in shares)	126,588	'	'
Vested (in shares)	-94,005	'	'
Forfeited (in shares)	-7,674	'	'
Nonvested at the end of the period (in shares)	222,753	197,844	'
Nonvested stock awards, Weighted-Average Grant Date Fair Value	'	'	'
Nonvested at the beginning of the period (in dollars per share)	$14.92	'	'
Granted (in dollars per share)	$17.11	$14.56	$14.88
Vested (in dollars per share)	$15.28	'	'
Forfeited (in dollars per share)	$15.54	'	'
Nonvested at the end of the period (in dollars per share)	$15.99	$14.92	'
Total grant date fair value amount of awards granted	2.2	2	1.4
Total fair value amount of awards vested	1.4	1.9	1.6
Performance Stock Awards | ROC Performance Stock Awards	'	'	'
Summary of non-vested stock awards	'	'	'
Nonvested at the beginning of the period (in shares)	56,588	'	'
Granted (in shares)	34,788	'	'
Vested (in shares)	'	0	0
Forfeited (in shares)	-32,988	'	'
Nonvested at the end of the period (in shares)	58,388	56,588	'
Nonvested stock awards, Weighted-Average Grant Date Fair Value	'	'	'
Nonvested at the beginning of the period (in dollars per share)	$14.35	'	'
Granted (in dollars per share)	$17.09	$14.94	$13.57
Forfeited (in dollars per share)	$14.62	'	'
Nonvested at the end of the period (in dollars per share)	$15.83	$14.35	'
Total grant date fair value amount of awards granted	0.6	0.5	0.3
Share-based compensation expense	0	0	0
Performance Stock Awards | TSR Performance Stock Award	'	'	'
Summary of non-vested stock awards	'	'	'
Nonvested at the beginning of the period (in shares)	67,723	'	'
Granted (in shares)	27,251	'	'
Forfeited (in shares)	-45,460	'	'
Nonvested at the end of the period (in shares)	49,514	67,723	'
Nonvested stock awards, Weighted-Average Grant Date Fair Value	'	'	'
Nonvested at the beginning of the period (in dollars per share)	$17.70	'	'
Granted (in dollars per share)	$21.92	$15.31	$15.58
Forfeited (in dollars per share)	$19.12	'	'
Nonvested at the end of the period (in dollars per share)	$18.72	$17.70	'
Total grant date fair value amount of awards granted	0.6	0.5	0.3
Total fair value amount of awards vested	$0	$0	$0.50

Pensions_Details

Pensions (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
U.S. Plans	'	'	'
Change in Projected Benefit Obligations	'	'	'
Projected benefit obligation at beginning of year	$116,620,000	$106,127,000	'
Service cost	1,165,000	1,059,000	1,022,000
Interest cost	4,423,000	4,796,000	4,942,000
Actuarial (gain) loss	-14,471,000	12,083,000	'
Benefits paid	-5,428,000	-3,343,000	'
Settlement	'	-4,102,000	'
Projected benefit obligation at end of year	102,309,000	116,620,000	106,127,000
Change in Plan Assets	'	'	'
Fair value of plan assets at beginning of year	88,184,000	82,970,000	'
Actual return on plan assets	14,186,000	10,577,000	'
Employer contributions	2,842,000	2,082,000	'
Benefits paid	-5,428,000	-3,343,000	'
Settlement	'	-4,102,000	'
Fair value of plan assets at end of year	99,784,000	88,184,000	82,970,000
Funded status of plan assets	-2,525,000	-28,436,000	'
Amounts recognized in the Balance Sheets:	'	'	'
Noncurrent asset	2,470,000	'	'
Current liability - Accrued benefit cost	-82,000	-82,000	'
Noncurrent liability - Accrued benefit cost	-4,913,000	-28,354,000	'
Net amount recognized	-2,525,000	-28,436,000	'
Amounts recognized in Accumulated Other Comprehensive Income consist of:	'	'	'
Accumulated prior service cost	89,000	164,000	'
Accumulated net actuarial loss	20,752,000	46,267,000	'
Net amount recognized, before tax effect	20,841,000	46,431,000	'
Accumulated benefit obligation at year end	50,200,000	111,600,000	'
Weighted-average assumptions used to determine benefit obligations at period end:	'	'	'
Discount rate (as a percent)	4.88%	3.92%	'
Rate of increase in compensation levels (as a percent)	3.50%	4.00%	'
European Plans	'	'	'
Change in Projected Benefit Obligations	'	'	'
Projected benefit obligation at beginning of year	42,417,000	33,469,000	'
Service cost	314,000	148,000	155,000
Interest cost	1,511,000	1,640,000	1,947,000
Employee contributions	103,000	119,000	'
Actuarial (gain) loss	1,178,000	5,203,000	'
Benefits paid	-1,550,000	-1,254,000	'
Settlement	-1,249,000	'	'
Other	-1,689,000	1,689,000	'
Foreign currency exchange rate changes	1,332,000	1,403,000	'
Projected benefit obligation at end of year	42,367,000	42,417,000	33,469,000
Change in Plan Assets	'	'	'
Fair value of plan assets at beginning of year	28,177,000	24,414,000	'
Actual return on plan assets	1,395,000	2,053,000	'
Employer contributions	1,875,000	1,831,000	'
Employee contributions	103,000	119,000	'
Benefits paid	-1,550,000	-1,254,000	'
Settlement	-1,249,000	'	'
Foreign currency exchange rate changes	835,000	1,014,000	'
Fair value of plan assets at end of year	29,586,000	28,177,000	24,414,000
Funded status of plan assets	-12,781,000	-14,240,000	'
Amounts recognized in the Balance Sheets:	'	'	'
Noncurrent asset	603,000	1,013,000	'
Current liability - Accrued benefit cost	-561,000	-590,000	'
Noncurrent liability - Accrued benefit cost	-12,823,000	-14,663,000	'
Net amount recognized	-12,781,000	-14,240,000	'
Amounts recognized in Accumulated Other Comprehensive Income consist of:	'	'	'
Accumulated net actuarial loss	7,022,000	6,167,000	'
Net amount recognized, before tax effect	7,022,000	6,167,000	'
Accumulated benefit obligation at year end	$40,500,000	$40,500,000	'
Weighted-average assumptions used to determine benefit obligations at period end:	'	'	'
Discount rate (as a percent)	3.92%	3.95%	'
Rate of increase in compensation levels (as a percent)	3.50%	3.50%	'

Pensions_Details_2

Pensions (Details 2) (USD $)

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

In Thousands, unless otherwise specified

item

Emerging Markets

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

U.S. Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

European Plans

item

Quoted Prices In Active Markets For Identical Assets (Level 1)

Quoted Prices In Active Markets For Identical Assets (Level 1)

Significant Observable Inputs (Level 2)

Significant Observable Inputs (Level 2)

Cash and Cash Equivalents

Cash and Cash Equivalents

Cash and Cash Equivalents

Cash and Cash Equivalents

Cash and Cash Equivalents

All Cap equities

All Cap equities

Equity Securities

Large Cap equities

Large Cap equities

Large Cap equities

Large Cap equities

Small/Mid Cap equity securities

Small/Mid Cap equity securities

Equities Blend

Equities Blend

International Equity

International Equity

Emerging Markets

Emerging Markets

Small Cap Mutual Fund equities

Small Cap Mutual Fund equities

Microcap Mutual Fund equities

Microcap Mutual Fund equities

International Mutual Fund equities

International Mutual Fund equities

Fixed Income Securities

Corporate Bonds

Corporate Bonds

Corporate Bonds

Government Bonds

Government Bonds

Government Bonds

Mortgage/Asset Backed

Mortgage/Asset Backed

Long Duration Mutual Fund

Long Duration Mutual Fund

Emerging Markets Debt Mutual Fund

Emerging Markets Debt Mutual Fund

Commodities

Commodities

Real Estate

Real Estate

Real estate equity securities

Foreign real estate securities

International Mutual Fund equities, emerging markets

International Mutual Fund equities, emerging markets

International Mutual Fund equities, emerging markets

High yield debt securities (minimum B credit rating)

Non-U.S. denominated debt securities

Other Investments

Quoted Prices In Active Markets For Identical Assets (Level 1)

Quoted Prices In Active Markets For Identical Assets (Level 1)

Significant Unobservable Inputs (Level 3)

Significant Unobservable Inputs (Level 3)

Cash and Cash Equivalents

Cash and Cash Equivalents

Cash and Cash Equivalents

Cash and Cash Equivalents

Equity Securities

M&G PP Discretionary Fund

M&G PP Discretionary Fund

M&G PP Discretionary Fund

M&G PP Discretionary Fund

Global Equity 60-40 Index equities

Global Equity 60-40 Index equities

Global Equity 60-40 Index equities

Global Equity 60-40 Index equities

Fixed Income Securities

Delta Lloyd Fixed Income

Delta Lloyd Fixed Income

Delta Lloyd Fixed Income

Delta Lloyd Fixed Income

Delta Lloyd Fixed Income

Corporate Bonds

Corporate Bonds

Corporate Bonds

Corporate Bonds

Government Bonds

Government Bonds

Government Bonds

Government Bonds

Real Estate

Real Estate

Real Estate

Real Estate

Insurance Reserves

Insurance Reserves

Insurance Reserves

Insurance Reserves

Insurance Reserves

UK Equity Index Fund

Overseas index equity funds

North American equity funds

European equity funds

Japanese equity funds

Pacific Basin equity funds

Other Investments

Quoted Prices In Active Markets For Identical Assets (Level 1)

Quoted Prices In Active Markets For Identical Assets (Level 1)

Significant Observable Inputs (Level 2)

Quoted Prices In Active Markets For Identical Assets (Level 1)

Quoted Prices In Active Markets For Identical Assets (Level 1)

Quoted Prices In Active Markets For Identical Assets (Level 1)

Quoted Prices In Active Markets For Identical Assets (Level 1)

Quoted Prices In Active Markets For Identical Assets (Level 1)

Quoted Prices In Active Markets For Identical Assets (Level 1)

Quoted Prices In Active Markets For Identical Assets (Level 1)

Significant Observable Inputs (Level 2)

Quoted Prices In Active Markets For Identical Assets (Level 1)

Quoted Prices In Active Markets For Identical Assets (Level 1)

Quoted Prices In Active Markets For Identical Assets (Level 1)

Significant Observable Inputs (Level 2)

Quoted Prices In Active Markets For Identical Assets (Level 1)

Significant Observable Inputs (Level 2)

Significant Observable Inputs (Level 2)

Quoted Prices In Active Markets For Identical Assets (Level 1)

Quoted Prices In Active Markets For Identical Assets (Level 1)

Quoted Prices In Active Markets For Identical Assets (Level 1)

item

Quoted Prices In Active Markets For Identical Assets (Level 1)

Minimum

Minimum

Minimum

Maximum

Maximum

Maximum

Quoted Prices In Active Markets For Identical Assets (Level 1)

Quoted Prices In Active Markets For Identical Assets (Level 1)

Quoted Prices In Active Markets For Identical Assets (Level 1)

Quoted Prices In Active Markets For Identical Assets (Level 1)

Quoted Prices In Active Markets For Identical Assets (Level 1)

Quoted Prices In Active Markets For Identical Assets (Level 1)

Significant Unobservable Inputs (Level 3)

Significant Unobservable Inputs (Level 3)

Quoted Prices In Active Markets For Identical Assets (Level 1)

Quoted Prices In Active Markets For Identical Assets (Level 1)

Quoted Prices In Active Markets For Identical Assets (Level 1)

Quoted Prices In Active Markets For Identical Assets (Level 1)

Quoted Prices In Active Markets For Identical Assets (Level 1)

Quoted Prices In Active Markets For Identical Assets (Level 1)

Significant Unobservable Inputs (Level 3)

Significant Unobservable Inputs (Level 3)

Pensions

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Fair value of plan assets

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$99,784

$88,184

$82,970

$84,064

$81,932

$15,720

$6,252

$2,010

$1,585

$174

$1,585

$1,836

$9,126

$9,126

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$21,139

$20,820

$21,139

$20,820

$13,446

$13,446

$715

$715

$9,532

$9,532

$6,402

$6,402

$6,252

$6,252

$5,852

$5,852

$15,884

$15,884

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$23,563

$16,489

$7,074

$11,490

$10,820

$670

$6,140

$6,140

$24,370

$24,370

$4,295

$4,295

$3,383

$3,383

$1,964

$1,964

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$29,586

$28,177

$24,414

$23,904

$22,653

$5,682

$5,524

$542

$993

$542

$993

'

$4,498

$2,103

$4,498

$2,103

$5,667

$4,604

$5,667

$4,604

'

$4,207

$4,058

$4,514

$4,207

$4,058

$4,779

$10,067

$4,779

$10,067

$6,384

$3,061

$6,384

$3,061

$2,034

$1,825

$2,034

$1,825

$1,475

$1,466

$1,246

$1,475

$1,466

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Number of major MSCI indices

21

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Number of emerging economies

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21

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Period of investment

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'2 years

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'2 years

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'6 years

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'15 years

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Total combined investment allocation (as a percent)

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52.00%

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43.00%

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10.00%

20.00%

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5.00%

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34.00%

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52.00%

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14.00%

Number of countries in which fund invests

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3

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Investment allocation maximum (as a percent)

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40.00%

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Investment in securities (as a percent)

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80.00%

40.00%

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10.00%

30.00%

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60.00%

40.00%

14.00%

14.00%

7.00%

5.00%

'

Pensions_Details_3

Pensions (Details 3) (European Plans, USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Delta Lloyd Fixed Income	'	'
Changes in fair value measurements using significant unobservable inputs	'	'
Fair value of plan assets at beginning of year	$4,058	$4,514
Purchases	814	'
Sales/Maturities	-837	-502
Foreign currency translation	172	46
Fair value of plan assets at end of year	4,207	4,058
Insurance Reserves	'	'
Changes in fair value measurements using significant unobservable inputs	'	'
Fair value of plan assets at beginning of year	1,466	1,246
Purchases	160	194
Sales/Maturities	-211	-4
Foreign currency translation	60	30
Fair value of plan assets at end of year	$1,475	$1,466

Pensions_Details_4

Pensions (Details 4) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
U.S. Plans	'	'
Projected Benefit Obligation Exceeds the Fair Value of Plan's Assets	'	'
Projected benefit obligation	$53,699	$116,620
Accumulated benefit obligation	50,188	111,625
Fair value of plan assets	48,704	88,184
Accumulated Benefit Obligation Exceeds the Fair Value of Plan's Asset	'	'
Projected benefit obligation	53,699	116,620
Accumulated benefit obligation	50,188	111,625
Fair value of plan assets	48,704	88,184
Employer contributions	'	'
2014	1,526	'
Benefit Payments	'	'
2014	5,869	'
2015	6,929	'
2016	6,960	'
2017	6,261	'
2018	6,770	'
2019 - 2023	36,676	'
European Plans	'	'
Projected Benefit Obligation Exceeds the Fair Value of Plan's Assets	'	'
Projected benefit obligation	31,485	33,022
Accumulated benefit obligation	29,568	31,123
Fair value of plan assets	18,101	17,769
Accumulated Benefit Obligation Exceeds the Fair Value of Plan's Asset	'	'
Projected benefit obligation	31,485	33,022
Accumulated benefit obligation	29,568	31,123
Fair value of plan assets	18,101	17,769
Employer contributions	'	'
2014	2,126	'
Benefit Payments	'	'
2014	3,297	'
2015	1,602	'
2016	1,231	'
2017	1,527	'
2018	1,443	'
2019 - 2023	$8,393	'

Pensions_Details_5

Pensions (Details 5) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Components of net periodic pension costs of the plans	'	'	'
Settlement	'	$1,369	'
U.S. Plans	'	'	'
Components of net periodic pension costs of the plans	'	'	'
Service cost	1,165	1,059	1,022
Interest cost	4,423	4,796	4,942
Expected return on assets	-6,660	-6,166	-6,669
Prior service cost	74	74	75
Net amortization	3,519	3,430	1,728
Settlement	'	1,369	'
Net periodic pension cost	2,521	4,562	1,098
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income (Loss)	'	'	'
Current year actuarial (gain) loss	-21,997	7,672	'
Amortization of actuarial loss	-3,519	-3,430	'
Amortization of prior service cost	-74	-74	'
Settlement	'	-1,369	'
Total recognized in other comprehensive income (loss)	-25,590	2,799	'
Total recognized in net periodic pension cost and other comprehensive income (loss)	-23,069	7,361	'
Estimated amounts that will be amortized from accumulated other comprehensive income into net periodic pension cost in 2014	'	'	'
Prior service cost	74	'	'
Net actuarial loss	950	'	'
Estimated amounts that will be amortized from accumulated other comprehensive income into net periodic pension cost in 2014	1,024	'	'
Assumptions used in the measurement of net periodic pension cost	'	'	'
Discount rate (as a percent)	3.92%	4.67%	5.26%
Expected annual return on plan assets (as a percent)	7.75%	7.75%	8.00%
Rate of increase in compensation levels (as a percent)	4.00%	4.00%	4.00%
European Plans	'	'	'
Components of net periodic pension costs of the plans	'	'	'
Service cost	314	148	155
Interest cost	1,511	1,640	1,947
Expected return on assets	-1,263	-1,232	-1,442
Net amortization	203	15	68
Settlement	279	'	'
Special termination benefits	'	'	200
Net periodic pension cost	1,044	571	928
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income (Loss)	'	'	'
Current year actuarial (gain) loss	1,046	4,382	'
Amortization of actuarial loss	-203	-15	'
Foreign currency exchange	292	296	'
Settlement	-279	'	'
Total recognized in other comprehensive income (loss)	856	4,663	'
Total recognized in net periodic pension cost and other comprehensive income (loss)	1,900	5,234	'
Estimated amounts that will be amortized from accumulated other comprehensive income into net periodic pension cost in 2014	'	'	'
Net actuarial loss	$245	'	'
Assumptions used in the measurement of net periodic pension cost	'	'	'
Discount rate (as a percent)	3.99%	5.00%	5.35%
Expected annual return on plan assets (as a percent)	4.91%	4.92%	6.03%
Rate of increase in compensation levels (as a percent)	3.50%	3.50%	3.50%

Pensions_Details_6

Pensions (Details 6) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013
In Millions, unless otherwise specified	U.S. and European Plans	U.S. and European Plans	U.S. Plans	U.S. Plans	U.S. Plans	U.S. Plans	U.S. Plans	European Plans	European Plans	European Plans
			Minimum	Maximum	Equity Securities	Fixed Income Securities	Other Investments	Equity Securities	Fixed Income Securities	Other Investments
			item	item
Pensions	'	'	'	'	'	'	'	'	'	'
Number of highest rating	'	'	1	2	'	'	'	'	'	'
Total combined investment allocation (as a percent)	'	'	'	'	52.00%	43.00%	5.00%	34.00%	52.00%	14.00%
Non-current pension liabilities included in accrued pension and other liabilities	$17.70	$43	'	'	'	'	'	'	'	'

Pensions_Details_7

Pensions (Details 7) (USD $)	12 Months Ended				0 Months Ended			12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013	1-May-07	Aug. 02, 2011	Jun. 08, 2010	Dec. 31, 2013
				Maximum	Columbus, Ohio facility	Neville Island, Pennsylvania facility	Catlettsburg, Kentucky facility	Catlettsburg, Kentucky facility
								item
Defined contribution plan	'	'	'	'	'	'	'	'
Percentage of eligible compensation in accordance with Internal Revenue Service guidance	50.00%	'	'	'	'	'	'	'
Percentage of eligible compensation as fixed contribution made by company	3.00%	'	'	'	'	'	'	'
Percentage of eligible compensation equal to matching contributions made by each participant	50.00%	'	'	'	'	'	'	'
Percentage of employee compensation	'	'	'	3.00%	'	'	'	'
Service period required for vesting of employer discretionary contributions	'2 years	'	'	'	'	'	'	'
Maximum matching contribution by employer per month	'	'	'	'	'	'	'	$25
Additional lump sum contributions to employees per year	'	'	'	'	'	'	'	5,000
Number of anniversary dates of voluntary conversion	'	'	'	'	'	'	'	3
Company contribution to the enhanced defined contribution plan per actual hour worked	'	'	'	'	1.15	1.65	1.4	1.4
Total expenses related to the defined contribution plans	$2,500,000	$1,900,000	$1,800,000	'	'	'	'	'

Pensions_Details_8

Pensions (Details 8) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Millions, unless otherwise specified
Multi-Employer Plan	'	'
Liability under multi-employer plan	$0.60	$1.70

Provision_for_Income_Taxes_Det

Provision for Income Taxes (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Current	'	'	'
Federal	$6,180,000	$9,039,000	$3,338,000
State and local	1,739,000	526,000	462,000
Foreign	8,632,000	4,056,000	12,000
Provision for income taxes, current	16,551,000	13,621,000	3,812,000
Deferred	'	'	'
Federal	5,950,000	-47,000	13,018,000
State and local	-248,000	178,000	597,000
Foreign	-767,000	312,000	-261,000
Provision for income taxes, deferred	4,935,000	443,000	13,354,000
Provision for income taxes	21,486,000	14,064,000	17,166,000
Reversal of indirect benefits on uncertain tax benefits lapsed due to statute of limitations	'	'	5,500,000
Income generated by operations outside the United States	29,300,000	10,400,000	11,800,000
Income Taxes	'	'	'
Undistributed earnings of non-U.S. subsidiaries	$77,400,000	'	'
Differences between the U.S. federal statutory tax rate and the effective income tax rate	'	'	'
U.S. federal statutory rate (as a percent)	35.00%	35.00%	35.00%
State income taxes, net of federal income tax benefit (as a percent)	0.80%	2.00%	2.10%
Tax rate differential on foreign income (as a percent)	-1.50%	-2.00%	-1.00%
Nonrecurring adjustments related to sale of foreign subsidiary (as percent)	-2.20%	2.80%	'
Permanent tax differences (as a percent)	-1.40%	-1.90%	-1.00%
Valuation allowance (as a percent)	1.50%	1.50%	'
Tax statute expiration (as a percent)	-0.60%	-0.80%	-5.80%
Change in uncertain tax positions (as a percent)	0.30%	0.60%	0.60%
Other - net (as a percent)	0.10%	0.50%	0.50%
Effective income tax rate (as a percent)	32.00%	37.70%	30.40%

Provision_for_Income_Taxes_Det1

Provision for Income Taxes (Details 2) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Capital loss carryforwards	'
Tax credit carryforwards	'
Tax credits	$770
Foreign	'
Tax credit carryforwards	'
Tax credits	1,063
State	'
Tax credit carryforwards	'
Tax credits	$2,476
Percentage of total tax credit carryforwards expiring in 2023 or later	99.00%

Provision_for_Income_Taxes_Det2

Provision for Income Taxes (Details 3) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Federal	'
Gross operating loss carryforwards	'
Operating loss carryforwards	$746
State	'
Gross operating loss carryforwards	'
Operating loss carryforwards	20,023
Percentage of total state operating loss carryforwards expiring in 2020 or later	88.00%
Foreign	'
Gross operating loss carryforwards	'
Operating loss carryforwards	$3,465
Carryforwards not subject to expiration (as a percent)	6.00%

Provision_for_Income_Taxes_Det3

Provision for Income Taxes (Details 4) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Deferred tax assets	'	'	'
Net operating loss and credit carryforwards	$5,548,000	$5,263,000	'
Accruals	11,198,000	10,957,000	'
Inventories	12,271,000	8,636,000	'
Pensions	4,725,000	15,892,000	'
Valuation allowance	-988,000	-1,146,000	'
Total deferred tax assets	32,754,000	39,602,000	'
Deferred tax liabilities	'	'	'
Property, plant and equipment	31,951,000	24,129,000	'
Goodwill and other intangible assets	5,879,000	6,308,000	'
U.S. liability on Belgian and German net deferred tax assets	1,248,000	669,000	'
Total deferred tax liabilities	39,078,000	31,106,000	'
Net deferred tax liability	-6,324,000	'	'
Net deferred tax asset	'	8,496,000	'
Uncertain tax liabilities that partially offset net operating losses and credit carryforwards	300,000	200,000	'
Net indirect benefits on uncertain tax liabilities	1,000,000	1,000,000	'
Reconciliation of the unrecognized income tax benefits	'	'	'
Balance at beginning of year	4,141,000	4,078,000	11,215,000
Gross increases for tax positions of prior years	'	53,000	252,000
Gross decreases for tax positions of prior years	-438,000	'	-84,000
Gross increases for tax positions of current year	122,000	647,000	562,000
Lapse of statute of limitations	-390,000	-637,000	-7,867,000
Balance at end of year	3,435,000	4,141,000	4,078,000
Gross unrecognized tax benefits that would impact effective tax rate	2,400,000	3,000,000	'
Interest and penalties recognized (reversed)	'	-100,000	'
Amount accrued for payment of interest and penalties related to unrecognized tax benefits	900,000	900,000	'
Total uncertain tax positions	4,100,000	4,800,000	'
Unrecognized tax benefits that are reasonably possible to be recognized within the next twelve months	$400,000	'	'

Accumulated_Other_Comprehensiv2

Accumulated Other Comprehensive Income (Loss) (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accumulated Other Comprehensive Loss	'	'	'
Balance, beginning of year, net of tax	($16,527)	($13,517)	'
Other comprehensive income before reclassifications	14,329	'	'
Amounts reclassified from other comprehensive income (loss)	1,058	'	'
Net current period other comprehensive income (loss)	15,387	-3,010	-9,443
Balance, end of year, net of tax	-1,140	-16,527	-13,517
Foreign Currency Translation Adjustments	'	'	'
Accumulated Other Comprehensive Loss	'	'	'
Balance, beginning of year, net of tax	17,098	'	'
Other comprehensive income before reclassifications	727	'	'
Amounts reclassified from other comprehensive income (loss)	-1,032	'	'
Net current period other comprehensive income (loss)	-305	'	'
Balance, end of year, net of tax	16,793	'	'
Pension Benefit Adjustments	'	'	'
Accumulated Other Comprehensive Loss	'	'	'
Balance, beginning of year, net of tax	-33,718	'	'
Other comprehensive income before reclassifications	12,913	'	'
Amounts reclassified from other comprehensive income (loss)	2,355	'	'
Net current period other comprehensive income (loss)	15,268	'	'
Balance, end of year, net of tax	-18,450	'	'
Derivatives	'	'	'
Accumulated Other Comprehensive Loss	'	'	'
Balance, beginning of year, net of tax	93	'	'
Other comprehensive income before reclassifications	689	'	'
Amounts reclassified from other comprehensive income (loss)	-265	'	'
Net current period other comprehensive income (loss)	424	'	'
Balance, end of year, net of tax	$517	'	'

Accumulated_Other_Comprehensiv3

Accumulated Other Comprehensive Income (Loss) (Details 2) (USD $)	3 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2012	Sep. 30, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Amounts reclassified out of accumulated other comprehensive loss	'	'	'	'	'
Cost of products sold (excluding depreciation)	'	'	($366,962)	($392,382)	($364,384)
Restructuring	-2,200	-8,000	129	-10,211	'
Income before income tax provision	'	'	67,199	37,336	56,390
Tax (expense) or benefit	'	'	-21,486	-14,064	-17,166
Net income	'	'	45,713	23,272	39,224
Amount Reclassified from Accumulated Other Comprehensive Income	'	'	'	'	'
Amounts reclassified out of accumulated other comprehensive loss	'	'	'	'	'
Net income	'	'	-1,058	'	'
Gains and losses on cash flow hedges | Amount Reclassified from Accumulated Other Comprehensive Income	'	'	'	'	'
Amounts reclassified out of accumulated other comprehensive loss	'	'	'	'	'
Income before income tax provision	'	'	463	'	'
Tax (expense) or benefit	'	'	-198	'	'
Net income	'	'	265	'	'
Gains and losses on cash flow hedges | Amount Reclassified from Accumulated Other Comprehensive Income | Foreign Exchange Contracts	'	'	'	'	'
Amounts reclassified out of accumulated other comprehensive loss	'	'	'	'	'
Cost of products sold (excluding depreciation)	'	'	1,018	'	'
Gains and losses on cash flow hedges | Amount Reclassified from Accumulated Other Comprehensive Income | Natural gas forward contracts	'	'	'	'	'
Amounts reclassified out of accumulated other comprehensive loss	'	'	'	'	'
Cost of products sold (excluding depreciation)	'	'	-555	'	'
Pension Benefit Adjustments | Amount Reclassified from Accumulated Other Comprehensive Income	'	'	'	'	'
Amounts reclassified out of accumulated other comprehensive loss	'	'	'	'	'
Prior-service costs	'	'	-74	'	'
Actuarial losses	'	'	-3,722	'	'
Income before income tax provision	'	'	-3,796	'	'
Tax (expense) or benefit	'	'	1,441	'	'
Net income	'	'	-2,355	'	'
Foreign Currency Translation Adjustments | Amount Reclassified from Accumulated Other Comprehensive Income	'	'	'	'	'
Amounts reclassified out of accumulated other comprehensive loss	'	'	'	'	'
Restructuring	'	'	1,032	'	'
Income before income tax provision	'	'	1,032	'	'
Net income	'	'	$1,032	'	'

Accumulated_Other_Comprehensiv4

Accumulated Other Comprehensive Income (Loss) (Details 3) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income tax (expense) benefits included in other comprehensive income (loss)	'	'	'
Foreign Currency Translation	$300,000	$29,000	$100,000
Pension Benefits	-9,800,000	2,500,000	5,700,000
Derivatives	-400,000	-600,000	-400,000
Compensation - Retirement Benefits	'	'	'
Accumulated Other Comprehensive Income (Loss)	'	'	'
Income tax benefits in accumulated other comprehensive loss	9,700,000	20,000,000	17,400,000
Derivatives	'	'	'
Accumulated Other Comprehensive Income (Loss)	'	'	'
Income tax benefits in accumulated other comprehensive loss	'	'	600,000
Income tax (expense) in accumulated other comprehensive loss	($300,000)	($29,000)	'

Supplemental_Cash_Flow_Informa1

Supplemental Cash Flow Information (Details) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Supplemental Cash Flow Information	'	'	'
Interest paid	$0.80	$0.60	$0.80
Income taxes paid	16.4	12.2	11.1
Decrease in accounts payable and accrued liabilities for changes in unpaid capital expenditures	$1	$0.70	'

Derivative_Instruments_Details

Derivative Instruments (Details)	12 Months Ended
	Dec. 31, 2013
Foreign currency forward exchange contracts | Maximum	'
Derivative Instruments	'
Maturity period of derivatives	'18 months
Foreign exchange option contracts | Maximum	'
Derivative Instruments	'
Maturity period of derivatives	'18 months
Natural gas forward contracts | Minimum	'
Derivative Instruments	'
Maturity period of derivatives	'1 month
Natural gas forward contracts | Maximum	'
Derivative Instruments	'
Maturity period of derivatives	'18 months

Derivative_Instruments_Details1

Derivative Instruments (Details 2) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Derivative Instruments	'	'
Total asset derivatives	$1,874	$1,120
Derivatives designated as hedging instruments under ASC 815	'	'
Derivative Instruments	'	'
Total asset derivatives	1,146	687
Derivatives designated as hedging instruments under ASC 815 | Foreign exchange contracts | Other current assets	'	'
Derivative Instruments	'	'
Total asset derivatives	850	545
Derivatives designated as hedging instruments under ASC 815 | Foreign exchange contracts | Other assets	'	'
Derivative Instruments	'	'
Total asset derivatives	94	142
Derivatives designated as hedging instruments under ASC 815 | Natural gas contracts | Other current assets	'	'
Derivative Instruments	'	'
Total asset derivatives	189	'
Derivatives designated as hedging instruments under ASC 815 | Natural gas contracts | Other assets	'	'
Derivative Instruments	'	'
Total asset derivatives	13	'
Derivatives not designated as hedging instruments under ASC 815 | Foreign exchange contracts | Other current assets	'	'
Derivative Instruments	'	'
Total asset derivatives	$728	$433

Derivative_Instruments_Details2

Derivative Instruments (Details 3) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Derivative Instruments	'	'
Total liability derivatives	$423	$646
Derivatives designated as hedging instruments under ASC 815	'	'
Derivative Instruments	'	'
Total liability derivatives	418	612
Derivatives designated as hedging instruments under ASC 815 | Foreign exchange contracts | Accounts payable and accrued liabilities	'	'
Derivative Instruments	'	'
Total liability derivatives	391	191
Derivatives designated as hedging instruments under ASC 815 | Foreign exchange contracts | Accrued pension and other liabilities	'	'
Derivative Instruments	'	'
Total liability derivatives	27	61
Derivatives designated as hedging instruments under ASC 815 | Natural gas forward contracts | Accounts payable and accrued liabilities	'	'
Derivative Instruments	'	'
Total liability derivatives	'	360
Derivatives not designated as hedging instruments under ASC 815 | Foreign exchange contracts | Accounts payable and accrued liabilities	'	'
Derivative Instruments	'	'
Total liability derivatives	$5	$34

Derivative_Instruments_Details3

Derivative Instruments (Details 4) (Accumulated OCI derivative gain or (loss), USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Accumulated OCI derivative gain or (loss)	'	'
Changes in accumulated OCI	'	'
Accumulated OCI at beginning of period	$74	($1,359)
Effective portion of changes in fair value	1,461	338
Reclassifications from accumulated OCI derivative to earnings	-463	1,065
Foreign currency translation	-198	30
Accumulated OCI at end of period	$874	$74

Derivative_Instruments_Details4

Derivative Instruments (Details 5) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Derivative Instruments	'	'	'
Amount of gain relating to accumulated OCI expected to be recognized in earnings over the next 12 months	$500,000	'	'
Cash flow hedges	'	'	'
Derivative Instruments	'	'	'
Amount of Gain or (Loss) Recognized in OCI on Derivatives (Effective Portion)	1,461,000	338,000	-1,269,000
Amount of Gain or (Loss) Reclassified from Accumulated OCI in Income (Effective Portion)	463,000	-1,065,000	-2,361,000
Foreign currency translation	-198,000	30,000	'
Amount of Gain or (Loss) Recognized in Income on Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing)	198,000	-30,000	-75,000
Cash flow hedges | Foreign exchange contracts	'	'	'
Derivative Instruments	'	'	'
Amount of Gain or (Loss) Recognized in OCI on Derivatives (Effective Portion)	1,326,000	612,000	-22,000
Cash flow hedges | Foreign exchange contracts | Cost of products sold (excluding depreciation)	'	'	'
Derivative Instruments	'	'	'
Amount of Gain or (Loss) Reclassified from Accumulated OCI in Income (Effective Portion)	1,018,000	530,000	-290,000
Cash flow hedges | Foreign exchange contracts | Other expense - net	'	'	'
Derivative Instruments	'	'	'
Amount of Gain or (Loss) Recognized in Income on Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing)	198,000	-30,000	-75,000
Cash flow hedges | Natural gas forward contracts	'	'	'
Derivative Instruments	'	'	'
Amount of Gain or (Loss) Recognized in OCI on Derivatives (Effective Portion)	135,000	-274,000	-1,247,000
Cash flow hedges | Natural gas forward contracts | Cost of products sold (excluding depreciation)	'	'	'
Derivative Instruments	'	'	'
Amount of Gain or (Loss) Reclassified from Accumulated OCI in Income (Effective Portion)	($555,000)	($1,595,000)	($2,071,000)

Derivative_Instruments_Details5

Derivative Instruments (Details 6) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified	MMBTU	MMBTU	MMBTU
Natural gas forward contracts	'	'	'
Derivative Instruments	'	'	'
Outstanding derivative contracts that were entered into to hedge forecasted transactions (in mmbtu)	525,000	235,000	700,000
Foreign exchange contracts	'	'	'
Derivative Instruments	'	'	'
Outstanding derivative contracts that were entered into to hedge forecasted transactions	44,110	42,399	35,304

Derivative_Instruments_Details6

Derivative Instruments (Details 7) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Derivative Instruments	'	'	'
Amount of Gain or (Loss) Recognized in Income on Derivatives Not Designated as Hedging Instruments Under ASC 815	$1,256	$963	($189)
Foreign exchange contracts | Other expense - net	'	'	'
Derivative Instruments	'	'	'
Amount of Gain or (Loss) Recognized in Income on Derivatives Not Designated as Hedging Instruments Under ASC 815	$1,256	$963	($189)

Derivative_Instruments_Details7

Derivative Instruments (Details 8) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2013
			Minimum	Maximum	Foreign exchange contracts	Foreign exchange contracts	Foreign exchange contracts	Natural gas contracts	Natural gas contracts
							Maximum	Minimum	Maximum
Derivative Instruments	'	'	'	'	'	'	'	'	'
Aggregate fair value of derivative instruments in asset positions and maximum loss if all counterparties failed to perform as contracted	$1,900,000	'	'	'	'	'	'	'	'
Fair Value of Assets	'	'	'	'	'	'	'	'	'
Gross derivative amounts recognized in the balance sheet	1,874,000	1,120,000	'	'	'	'	'	'	'
Gross derivative amounts not offset in the balance sheet that are eligible for offsetting	'	'	'	'	'	'	'	'	'
Gross derivative amounts not offset that are eligible for offsetting - foreign currency contracts	'	'	'	'	-423,000	-286,000	'	'	'
Net amount	1,451,000	834,000	'	'	'	'	'	'	'
Fair Value of Liabilities	'	'	'	'	'	'	'	'	'
Gross derivative amounts recognized in the balance sheet	423,000	646,000	'	'	'	'	'	'	'
Gross derivative amounts not offset in the balance sheet that are eligible for offsetting	'	'	'	'	'	'	'	'	'
Gross derivative amounts not offset that are eligible for offsetting - foreign currency contracts	'	'	'	'	-423,000	-286,000	'	'	'
Net amount	'	$360,000	'	'	'	'	'	'	'
Managing foreign currency and natural gas exposure	'	'	'	'	'	'	'	'	'
Percentage of the forecasted intercompany sales to be hedged by using foreign currency risk derivatives	'	'	'	75.00%	'	'	'	'	'
Percentage of the forecasted natural gas requirements to be hedged by using derivatives	'	'	0.00%	75.00%	'	'	'	'	'
Maturity period of derivatives	'	'	'	'	'	'	'18 months	'1 month	'18 months

Contingencies_Details

Contingencies (Details) (USD $)

12 Months Ended

12 Months Ended

10 Months Ended

1 Months Ended

1 Months Ended

12 Months Ended

0 Months Ended

1 Months Ended

12 Months Ended

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Feb. 24, 2014

Dec. 31, 2010

Dec. 31, 2013

Mar. 31, 2013

Aug. 31, 2008

Dec. 31, 2013

Dec. 31, 2012

Nov. 30, 2009

Dec. 31, 2008

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Jan. 09, 2014

Aug. 15, 2013

Oct. 31, 2011

Nov. 09, 2012

Nov. 09, 2012

Nov. 09, 2012

Nov. 26, 2013

Nov. 26, 2013

Nov. 26, 2013

Jun. 26, 2013

Dec. 18, 2012

Jun. 06, 2012

Mar. 18, 2013

Mar. 31, 2012

Nov. 30, 2013

Dec. 31, 2013

FYEO

Waterlink's Columbus, Ohio property

Waterlink's Columbus, Ohio property

Waterlink's Columbus, Ohio property

Waterlink's Columbus, Ohio property

Waterlink's Columbus, Ohio property

Waterlink's Columbus, Ohio property

Waterlink's Columbus, Ohio property

Big Sandy Plant

Big Sandy Plant

Big Sandy Plant

Big Sandy Plant

Frontier Chemical Processing Royal Avenue Site

Frontier Chemical Processing Royal Avenue Site

Frontier Chemical Processing Royal Avenue Site

Frontier Chemical Processing Royal Avenue Site

Continued Dumping and Subsidy Offset Act Distributions

Continued Dumping and Subsidy Offset Act Distributions

Continued Dumping and Subsidy Offset Act Distributions

Continued Dumping and Subsidy Offset Act Distributions

Continued Dumping and Subsidy Offset Act Distributions

Continued Dumping and Subsidy Offset Act Distributions

Continued Dumping and Subsidy Offset Act Distributions

Period of Review III

Period of Review III

Period of Review III

Period of Review IV

Period of Review IV

Period of Review IV

Period of Review V

Period of Review V

Period of Review V

Period of Review VI

Sunset Review

Sunset Review

Sunset Review

Sunset Review

Carbon Imports - Anti-dumping duties

Carbon Imports - Anti-dumping duties

Accounts payable and accrued liabilities

Accrued pension and other liabilities

Accrued pension and other liabilities

Activated Carbon and Service

item

Minimum

Minimum

Estimated

item

Jacobi Carbons AB

Ningxia Huahui Activated Carbon Co., Ltd.

item

Jacobi Carbons AB

Ningxia Huahui Activated Carbon Co., Ltd.

item

item

item

periodofreview

item

item

Contingencies

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Litigation settlement amount

'

'

'

$4,300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Recognized litigation expense

284,000

111,000

-337,000

3,300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Recorded liability estimates for environmental loss contingencies

'

'

'

'

'

'

'

400,000

400,000

1,400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Environmental remediation costs

'

'

'

'

600,000

600,000

700,000

'

'

'

'

400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Accrued potential loss

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Reduction in previously recorded liabilities

'

'

'

'

'

'

'

'

'

'

1,300,000

200,000

200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of PRP's joining the Company in Consent Order for additional site investigation

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

100

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of PRP's along with Company entered into consent decree with NYSDEC

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

30

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amount spent by PRP Group for remediation

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

7,300,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Potentially Responsible Party Group, Additional Environmental Remediation Costs

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amount available in trust account of PRP Group to apply against final remediation costs

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,200,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Import duty (in dollars per pound)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

'

'

'

'

'

'

'

'

'

'

'

'

'

0.073

'

Prior period over which Commerce Department reviews anti-dumping tariffs

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'12 months

Period for which reviews are possible

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'5 years

Number of periods of review

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

6

Adjusted Ongoing Anti-dumping duty rate determined by review (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.00%

0.00%

'

'

'

'

'

'

'

'

'

'

'

'

Receivable recorded for anticipated refunds of anti-dumping duties

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Tariff collection rate for cooperative respondents (in dollars per pound)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

'

0.127

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of respondents applied with per-unit rates

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Anti-dumping margins for mandatory respondents (in dollars per pound)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.2

0.96

'

0.01

0.18

'

'

'

'

'

'

'

Anti-dumping margins for cooperative, separate rate respondents (in dollars per pound)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0.47

'

'

0.07

'

'

'

'

'

'

'

'

'

Anti-dumping margin for a competitor (in dollars per pound)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

0

'

'

'

'

'

'

'

'

'

'

'

'

Assessment rate finalized at deposit rate due to not participating in review (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

14.51%

'

'

'

'

'

'

'

'

'

'

'

'

Number of U.S. producers besides the Company participating in sunset review

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2

'

'

2

'

'

Number of mandatory respondents

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2

'

'

2

'

'

'

'

'

'

Period for possible continuation of anti-dumping tariff

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'5 years

'

'

'5 years

'

'

Extension period for continuation of anti-dumping tariff

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'5 years

'5 years

'5 years

'

'

Distributions received under Continued Dumping and Subsidy Offset Act

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

800,000

200,000

'

'

0

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Distributions received as a percentage of total amount of duties available

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

59.57%

59.57%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amount received

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,800,000

'

'

100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amount received, reflected within the entity's consolidated statement of comprehensive income

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

1,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of final anti-dumping duties received as CDSOA distributions

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

59.57%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Penalty amount

'

'

'

'

'

'

'

'

'

'

'

'

'

$1,600,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of ground water monitoring wells to be installed

'

'

'

'

'

'

'

'

'

'

'

2

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Contingencies_Details_2

Contingencies (Details 2) (Pearl River Plant, USD $)	1 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2013
Pearl River Plant	'
Gain contingencies	'
Insurance claim received from insurance carrier that was recorded as a deduction to cost of products sold (excluding depreciation)	$0.40

Basic_and_Diluted_Net_Income_P2

Basic and Diluted Net Income Per Common Share (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Basic and Diluted Net Income Per Common Share	'	'	'	'	'	'	'	'	'	'	'
Net income available to common shareholders	'	'	'	'	'	'	'	'	$45,713	$23,272	$39,224
Weighted Average Shares Outstanding	'	'	'	'	'	'	'	'	'	'	'
Basic (in shares)	54,265,000	53,900,000	53,799,000	53,620,000	55,390,000	56,682,000	56,639,000	56,512,000	53,897,834	56,304,636	56,243,015
Effect of Dilutive Securities (in shares)	'	'	'	'	'	'	'	'	773,195	530,924	750,933
Diluted (in shares)	55,160,000	54,764,000	54,547,000	54,200,000	55,837,000	57,197,000	57,190,000	57,124,000	54,671,029	56,835,560	56,993,948
Basic net income per common share (in dollars per share)	$0.20	$0.22	$0.24	$0.18	$0.16	($0.08)	$0.19	$0.14	$0.85	$0.41	$0.70
Diluted net income per common share (in dollars per share)	$0.20	$0.22	$0.24	$0.18	$0.16	($0.08)	$0.19	$0.14	$0.84	$0.41	$0.69
Antidilutive options excluded from calculation of net income per common share (in shares)	'	'	'	'	'	'	'	'	0	341,277	131,890

Segment_Information_Details

Segment Information (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
									segment
Segment Information	'	'	'	'	'	'	'	'	'	'	'
Number of reportable segments	'	'	'	'	'	'	'	'	3	'	'
Segment Information	'	'	'	'	'	'	'	'	'	'	'
Net Sales	$133,092,000	$139,375,000	$140,432,000	$135,040,000	$141,777,000	$135,467,000	$148,403,000	$136,608,000	$547,939,000	$562,255,000	$541,472,000
Income (loss) from operations	'	'	'	'	'	'	'	'	68,889,000	39,861,000	57,232,000
Amortization	'	'	'	'	'	'	'	'	-2,140,000	-1,968,000	-1,757,000
Restructuring charges (Note 2)	'	'	'	'	-2,200,000	-8,000,000	'	'	129,000	-10,211,000	'
Interest income	'	'	'	'	'	'	'	'	136,000	35,000	467,000
Interest expense	'	'	'	'	'	'	'	'	-462,000	-80,000	'
Other expense - net	'	'	'	'	'	'	'	'	-1,364,000	-2,480,000	-1,309,000
Income before income tax provision	'	'	'	'	'	'	'	'	67,199,000	37,336,000	56,390,000
Depreciation	'	'	'	'	'	'	'	'	26,798,000	24,352,000	22,580,000
Consolidated depreciation and amortization	'	'	'	'	'	'	'	'	28,938,000	26,320,000	24,337,000
Total assets	590,078,000	'	'	'	577,769,000	'	'	'	590,078,000	577,769,000	552,990,000
Expenditures for Long-Lived Assets	'	'	'	'	'	'	'	'	29,557,000	57,226,000	70,388,000
Accounts payable and accrued liabilities	'	'	'	'	'	'	'	'	'	'	'
Segment Information	'	'	'	'	'	'	'	'	'	'	'
Property, plant and equipment expenditures	'	'	'	'	'	'	'	'	500,000	1,500,000	2,200,000
Activated Carbon and Service	'	'	'	'	'	'	'	'	'	'	'
Segment Information	'	'	'	'	'	'	'	'	'	'	'
Net Sales	'	'	'	'	'	'	'	'	482,278,000	485,755,000	486,468,000
Depreciation	'	'	'	'	'	'	'	'	24,882,000	22,578,000	20,959,000
Total assets	527,430,000	'	'	'	510,550,000	'	'	'	527,430,000	510,550,000	493,793,000
Expenditures for Long-Lived Assets	'	'	'	'	'	'	'	'	25,885,000	56,291,000	68,533,000
Equipment	'	'	'	'	'	'	'	'	'	'	'
Segment Information	'	'	'	'	'	'	'	'	'	'	'
Net Sales	'	'	'	'	'	'	'	'	54,935,000	66,050,000	46,274,000
Depreciation	'	'	'	'	'	'	'	'	1,486,000	1,352,000	1,332,000
Total assets	55,558,000	'	'	'	60,191,000	'	'	'	55,558,000	60,191,000	53,216,000
Expenditures for Long-Lived Assets	'	'	'	'	'	'	'	'	3,325,000	550,000	752,000
Consumer	'	'	'	'	'	'	'	'	'	'	'
Segment Information	'	'	'	'	'	'	'	'	'	'	'
Net Sales	'	'	'	'	'	'	'	'	10,726,000	10,450,000	8,730,000
Depreciation	'	'	'	'	'	'	'	'	430,000	422,000	289,000
Total assets	7,090,000	'	'	'	7,028,000	'	'	'	7,090,000	7,028,000	5,981,000
Expenditures for Long-Lived Assets	'	'	'	'	'	'	'	'	347,000	385,000	1,103,000
Business operating segments	'	'	'	'	'	'	'	'	'	'	'
Segment Information	'	'	'	'	'	'	'	'	'	'	'
Income (loss) from operations	'	'	'	'	'	'	'	'	70,900,000	52,040,000	58,989,000
Business operating segments | Activated Carbon and Service	'	'	'	'	'	'	'	'	'	'	'
Segment Information	'	'	'	'	'	'	'	'	'	'	'
Income (loss) from operations	'	'	'	'	'	'	'	'	71,530,000	49,328,000	65,030,000
Business operating segments | Equipment	'	'	'	'	'	'	'	'	'	'	'
Segment Information	'	'	'	'	'	'	'	'	'	'	'
Income (loss) from operations	'	'	'	'	'	'	'	'	-2,620,000	702,000	-3,504,000
Business operating segments | Consumer	'	'	'	'	'	'	'	'	'	'	'
Segment Information	'	'	'	'	'	'	'	'	'	'	'
Income (loss) from operations	'	'	'	'	'	'	'	'	$1,990,000	$2,010,000	($2,537,000)

Segment_Information_Details_2

Segment Information (Details 2) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Information	'	'	'	'	'	'	'	'	'	'	'
Net Sales	$133,092	$139,375	$140,432	$135,040	$141,777	$135,467	$148,403	$136,608	$547,939	$562,255	$541,472
Carbon products	'	'	'	'	'	'	'	'	'	'	'
Segment Information	'	'	'	'	'	'	'	'	'	'	'
Net Sales	'	'	'	'	'	'	'	'	460,681	465,885	466,046
Capital equipment	'	'	'	'	'	'	'	'	'	'	'
Segment Information	'	'	'	'	'	'	'	'	'	'	'
Net Sales	'	'	'	'	'	'	'	'	49,036	61,588	40,650
Equipment leasing	'	'	'	'	'	'	'	'	'	'	'
Segment Information	'	'	'	'	'	'	'	'	'	'	'
Net Sales	'	'	'	'	'	'	'	'	15,127	13,886	14,815
Carbon cloth products	'	'	'	'	'	'	'	'	'	'	'
Segment Information	'	'	'	'	'	'	'	'	'	'	'
Net Sales	'	'	'	'	'	'	'	'	10,721	10,422	7,868
Spare parts	'	'	'	'	'	'	'	'	'	'	'
Segment Information	'	'	'	'	'	'	'	'	'	'	'
Net Sales	'	'	'	'	'	'	'	'	5,899	4,462	5,624
Home consumer products	'	'	'	'	'	'	'	'	'	'	'
Segment Information	'	'	'	'	'	'	'	'	'	'	'
Net Sales	'	'	'	'	'	'	'	'	5	28	862
Other services	'	'	'	'	'	'	'	'	'	'	'
Segment Information	'	'	'	'	'	'	'	'	'	'	'
Net Sales	'	'	'	'	'	'	'	'	$6,470	$5,984	$5,607

Segment_Information_Details_3

Segment Information (Details 3) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Information	'	'	'	'	'	'	'	'	'	'	'
Net Sales	$133,092	$139,375	$140,432	$135,040	$141,777	$135,467	$148,403	$136,608	$547,939	$562,255	$541,472
United States	'	'	'	'	'	'	'	'	'	'	'
Segment Information	'	'	'	'	'	'	'	'	'	'	'
Net Sales	'	'	'	'	'	'	'	'	272,644	261,167	254,953
Japan	'	'	'	'	'	'	'	'	'	'	'
Segment Information	'	'	'	'	'	'	'	'	'	'	'
Net Sales	'	'	'	'	'	'	'	'	60,804	71,141	73,335
United Kingdom	'	'	'	'	'	'	'	'	'	'	'
Segment Information	'	'	'	'	'	'	'	'	'	'	'
Net Sales	'	'	'	'	'	'	'	'	40,215	37,991	32,948
France	'	'	'	'	'	'	'	'	'	'	'
Segment Information	'	'	'	'	'	'	'	'	'	'	'
Net Sales	'	'	'	'	'	'	'	'	27,969	21,456	20,302
Germany	'	'	'	'	'	'	'	'	'	'	'
Segment Information	'	'	'	'	'	'	'	'	'	'	'
Net Sales	'	'	'	'	'	'	'	'	18,784	20,120	20,513
Canada	'	'	'	'	'	'	'	'	'	'	'
Segment Information	'	'	'	'	'	'	'	'	'	'	'
Net Sales	'	'	'	'	'	'	'	'	16,945	17,861	19,986
China	'	'	'	'	'	'	'	'	'	'	'
Segment Information	'	'	'	'	'	'	'	'	'	'	'
Net Sales	'	'	'	'	'	'	'	'	15,832	15,179	10,369
Belgium	'	'	'	'	'	'	'	'	'	'	'
Segment Information	'	'	'	'	'	'	'	'	'	'	'
Net Sales	'	'	'	'	'	'	'	'	10,690	10,112	11,419
Singapore	'	'	'	'	'	'	'	'	'	'	'
Segment Information	'	'	'	'	'	'	'	'	'	'	'
Net Sales	'	'	'	'	'	'	'	'	9,364	10,380	6,661
South Korea	'	'	'	'	'	'	'	'	'	'	'
Segment Information	'	'	'	'	'	'	'	'	'	'	'
Net Sales	'	'	'	'	'	'	'	'	7,364	20,178	12,546
Switzerland	'	'	'	'	'	'	'	'	'	'	'
Segment Information	'	'	'	'	'	'	'	'	'	'	'
Net Sales	'	'	'	'	'	'	'	'	5,334	4,683	3,324
Netherlands	'	'	'	'	'	'	'	'	'	'	'
Segment Information	'	'	'	'	'	'	'	'	'	'	'
Net Sales	'	'	'	'	'	'	'	'	5,283	6,009	6,861
Spain	'	'	'	'	'	'	'	'	'	'	'
Segment Information	'	'	'	'	'	'	'	'	'	'	'
Net Sales	'	'	'	'	'	'	'	'	3,806	4,049	3,665
Australia	'	'	'	'	'	'	'	'	'	'	'
Segment Information	'	'	'	'	'	'	'	'	'	'	'
Net Sales	'	'	'	'	'	'	'	'	3,775	3,214	6,424
Denmark	'	'	'	'	'	'	'	'	'	'	'
Segment Information	'	'	'	'	'	'	'	'	'	'	'
Net Sales	'	'	'	'	'	'	'	'	3,639	4,142	4,178
Other	'	'	'	'	'	'	'	'	'	'	'
Segment Information	'	'	'	'	'	'	'	'	'	'	'
Net Sales	'	'	'	'	'	'	'	'	$45,491	$54,573	$53,988

Segment_Information_Details_4

Segment Information (Details 4) (USD $)	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
In Thousands, unless otherwise specified
Segment Information	'	'	'
Long-lived assets	$266,849	$262,993	$234,549
United States	'	'	'
Segment Information	'	'	'
Long-lived assets	169,786	161,806	133,176
Belgium	'	'	'
Segment Information	'	'	'
Long-lived assets	64,567	66,077	64,051
China	'	'	'
Segment Information	'	'	'
Long-lived assets	16,990	17,864	19,319
United Kingdom	'	'	'
Segment Information	'	'	'
Long-lived assets	8,832	8,654	8,043
Japan	'	'	'
Segment Information	'	'	'
Long-lived assets	6,334	7,908	9,152
Canada	'	'	'
Segment Information	'	'	'
Long-lived assets	159	474	653
Singapore	'	'	'
Segment Information	'	'	'
Long-lived assets	77	106	135
Denmark	'	'	'
Segment Information	'	'	'
Long-lived assets	64	53	'
Brazil	'	'	'
Segment Information	'	'	'
Long-lived assets	28	36	'
Germany	'	'	'
Segment Information	'	'	'
Long-lived assets	$12	$15	$20

Government_Grants_Details

Government Grants (Details)

12 Months Ended

12 Months Ended

12 Months Ended

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2011

Dec. 31, 2013

Dec. 31, 2012

Jun. 20, 2011

Dec. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2012

Dec. 07, 2007

Dec. 07, 2007

USD ($)

USD ($)

USD ($)

CNY

OTF AEP Grant

OTF AEP Grant

OTF AEP Grant

Walloon Region Grant

Walloon Region Grant

Walloon Region Grant

Walloon Region Grant

Walloon Region Grant

Walloon Region Grant

USD ($)

USD ($)

USD ($)

USD ($)

EUR (€)

USD ($)

EUR (€)

USD ($)

EUR (€)

item

Government Grants

'

'

'

'

'

'

'

'

'

'

'

'

'

One-time incentive award

'

'

$2,200,000

13,960,000

'

'

'

'

'

'

'

'

'

Government Grants

'

'

'

'

'

'

'

'

'

'

'

'

'

Total grants awarded

'

'

'

'

'

'

1,000,000

'

'

'

'

3,400,000

2,600,000

Cash received from government grants

1,709,000

947,000

2,189,000

'

400,000

300,000

'

'

'

'

'

'

'

Amount received recognized as deduction from the carrying amount of the property, plant and equipment

'

'

'

'

200,000

200,000

'

1,500,000

1,200,000

700,000

500,000

'

'

Amount received recognized as deduction from research and development expenses

'

'

'

'

$200,000

$100,000

'

'

'

'

'

'

'

Number of grants awarded

'

'

'

'

'

'

'

'

'

'

'

2

2

QUARTERLY_FINANCIAL_DATA_UNAUD2

QUARTERLY FINANCIAL DATA - UNAUDITED (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
QUARTERLY FINANCIAL DATA - UNAUDITED	'	'	'	'	'	'	'	'	'	'	'
Net sales	$133,092,000	$139,375,000	$140,432,000	$135,040,000	$141,777,000	$135,467,000	$148,403,000	$136,608,000	$547,939,000	$562,255,000	$541,472,000
Net sales less cost of products sold (excluding depreciation)	45,603,000	46,374,000	46,375,000	42,625,000	44,221,000	36,923,000	45,947,000	42,782,000	'	'	'
Net income (loss)	11,044,000	11,885,000	12,970,000	9,814,000	9,103,000	-4,453,000	10,884,000	7,738,000	'	'	'
Basic:	'	'	'	'	'	'	'	'	'	'	'
Basic net income (loss) per common share (in dollars per share)	$0.20	$0.22	$0.24	$0.18	$0.16	($0.08)	$0.19	$0.14	$0.85	$0.41	$0.70
Diluted:	'	'	'	'	'	'	'	'	'	'	'
Diluted net income (loss) per common share (in dollars per share)	$0.20	$0.22	$0.24	$0.18	$0.16	($0.08)	$0.19	$0.14	$0.84	$0.41	$0.69
Average common shares outstanding	'	'	'	'	'	'	'	'	'	'	'
Basic (in shares)	54,265,000	53,900,000	53,799,000	53,620,000	55,390,000	56,682,000	56,639,000	56,512,000	53,897,834	56,304,636	56,243,015
Diluted (in shares)	55,160,000	54,764,000	54,547,000	54,200,000	55,837,000	57,197,000	57,190,000	57,124,000	54,671,029	56,835,560	56,993,948
Restructuring charges	'	'	'	'	2,200,000	8,000,000	'	'	-129,000	10,211,000	'
Multi-employer plan charge	'	'	'	'	'	1,700,000	'	'	'	'	'
Amount related to an agreement with former Chief Executive Officer included in quarterly financial data	'	'	'	'	'	$1,700,000	'	'	'	'	'

Schedule_II_Valuation_and_Qual1

Schedule II Valuation and Qualifying Accounts (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Allowance for doubtful accounts	'	'	'
Valuation and Qualifying Accounts	'	'	'
Balance at Beginning of Year	$1,362	$1,200	$1,743
Additions Charged to Costs and Expenses	488	464	215
Deductions Returns and Write-Offs	-522	-302	-758
Balance at End of Year	1,328	1,362	1,200
Income tax valuation allowance	'	'	'
Valuation and Qualifying Accounts	'	'	'
Balance at Beginning of Year	1,146	'	'
Additions Charged to Costs and Expenses	988	1,146	'
Deductions Returns and Write-Offs	-1,146	'	'
Balance at End of Year	$988	$1,146	'