Calgon Carbon Inactive 10-Q8 May 142014 Q1 Quarterly reportFinancial data

Company Profile

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
Document and Entity Information	Mar. 31, 2014	1-May-14
Document and Entity Information	'	'
Entity Registrant Name	'CALGON CARBON CORPORATION	'
Entity Central Index Key	'0000812701	'
Document Type	'10-Q	'
Document Period End Date	31-Mar-14	'
Amendment Flag	'false	'
Current Fiscal Year End Date	'--12-31	'
Entity Current Reporting Status	'Yes	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	53,277,286
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q1	'

CONDENSED_CONSOLIDATED_STATEME

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME	'	'
Net sales	$131,632	$135,040
Cost of products sold (excluding depreciation and amortization)	87,463	92,415
Depreciation and amortization	7,029	6,747
Selling, general and administrative expenses	20,064	19,526
Research and development expenses	1,578	1,402
Restructuring	-103	-24
Total costs and expenses	116,031	120,066
Income from operations	15,601	14,974
Interest income	10	124
Interest expense	-109	-177
Other expense - net	-546	-828
Income before income tax provision	14,956	14,093
Income tax provision	5,147	4,279
Net income	9,809	9,814
Other comprehensive income (loss), net of tax (Note 9)	'	'
Foreign currency translation	124	-6,288
Derivatives	-206	574
Employee benefit plans	202	-378
Total other comprehensive income (loss)	120	-6,092
Total comprehensive income	$9,929	$3,722
Net income per common share	'	'
Basic (in dollars per share)	$0.18	$0.18
Diluted (in dollars per share)	$0.18	$0.18
Weighted average shares outstanding	'	'
Basic (in shares)	53,608,465	53,620,349
Diluted (in shares)	54,525,367	54,200,210

CONDENSED_CONSOLIDATED_BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Current assets:	'	'
Cash and cash equivalents	$36,215	$32,942
Receivables (net of allowance of $1,347 and $1,328)	100,349	96,996
Revenue recognized in excess of billings on uncompleted contracts	7,401	8,090
Inventories	108,621	109,517
Deferred income taxes - current	18,280	20,787
Other current assets	14,679	13,118
Total current assets	285,545	281,450
Property, plant and equipment, net	266,949	266,849
Intangibles, net	5,917	5,602
Goodwill	26,523	26,552
Deferred income taxes - long-term	3,850	3,791
Other assets	5,412	5,834
Total assets	594,196	590,078
Current liabilities:	'	'
Accounts payable and accrued liabilities	55,057	57,213
Restructuring reserve	385	535
Billings in excess of revenue recognized on uncompleted contracts	5,247	5,406
Payroll and benefits payable	10,362	14,144
Accrued income taxes	2,113	2,726
Short-term debt	3,612	2,172
Total current liabilities	76,776	82,196
Long-term debt	52,043	32,114
Deferred income taxes - long-term	30,980	30,902
Accrued pension and other liabilities	27,373	28,361
Total liabilities	187,172	173,573
Commitments and contingencies (Note 12)	'	'
Shareholders' equity:	'	'
Common shares, $.01 par value, 100,000,000 shares authorized, 57,346,877 and 57,232,050 shares issued	573	572
Additional paid-in capital	172,139	170,320
Retained earnings	326,033	316,224
Accumulated other comprehensive loss	-1,020	-1,140
Total of shareholders' equity before adjusting treasury stock	497,725	485,976
Treasury stock, at cost, 7,266,916 and 6,242,326 shares	-90,701	-69,471
Total shareholders' equity	407,024	416,505
Total liabilities and shareholders' equity	$594,196	$590,078

CONDENSED_CONSOLIDATED_BALANCE1

CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
CONDENSED CONSOLIDATED BALANCE SHEETS	'	'
Receivables, allowance for losses (in dollars)	$1,347	$1,328
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	57,346,877	57,232,050
Treasury stock, shares	7,266,916	6,242,326

CONDENSED_CONSOLIDATED_STATEME1

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities	'	'
Net income	$9,809	$9,814
Adjustments to reconcile net income to net cash provided by (used in) operating activities:	'	'
Depreciation and amortization	7,029	6,747
Employee benefit plan provisions	18	876
Stock-based compensation	721	946
Deferred income tax expense	2,535	740
Restructuring	-103	-24
Restructuring cash payments	-47	-2,616
Changes in assets and liabilities-net of effects from foreign exchange:	'	'
Increase in receivables	-3,038	-13,361
Decrease (increase) in inventories	1,271	-1,588
(Increase) decrease in revenue in excess of billings on uncompleted contracts and other current assets	-1,393	5,300
Decrease in accounts payable and accrued liabilities	-5,557	-9,845
Pension contributions	-707	-456
Other items - net	-316	2,855
Net cash provided by (used in) operating activities	10,222	-612
Cash flows from investing activities	'	'
Proceeds from sale of business	'	642
Capital expenditures	-8,638	-10,617
Government grants received	1,254	1,693
Net cash used in investing activities	-7,384	-8,282
Cash flows from financing activities	'	'
Proceeds of debt obligations	'	173
Reductions of debt obligations	-1,527	-901
Treasury stock purchased	-21,230	-339
Common stock issued	959	1,572
Net cash provided by financing activities	919	3,065
Effect of exchange rate changes on cash and cash equivalents	-484	2,222
Increase (decrease) in cash and cash equivalents	3,273	-3,607
Cash and cash equivalents, beginning of period	32,942	18,161
Cash and cash equivalents, end of period	36,215	14,554
Japanese working capital loan - short-term (note 4)	'	'
Cash flows from financing activities	'	'
Borrowings	1,955	'
Repayments	-488	-1,090
U.S. Revolving credit facility - long term (note 4)	'	'
Cash flows from financing activities	'	'
Borrowings	31,950	28,200
Repayments	($10,700)	($24,550)

Restructuring

Restructuring	3 Months Ended
	Mar. 31, 2014
Restructuring	'
Restructuring	'
	1. Restructuring

	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.

	For the period ended March 31, 2014, the Company recorded $0.1 million of restructuring income which represents a reduction in the estimated accrual. For the period ended March 31, 2013, the Company recorded a $0.6 million restructuring charge and 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 restructuring activity was all within the Activated Carbon and Service segment. The remaining restructuring cash outlays are expected to be made in 2014.

	The following table summarizes the restructuring plan and the reserve activity since inception and through the quarter ended March 31, 2014:

	(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
	2012 Activity	(2,551		)	(4,000		)	—			(434		)	(6,985		)	(53	)
	Balance at December 31, 2012	$	3,226		$	—		$	—		$	—		$	3,226		67
	Restructuring charges (income)	357			—			(578		)	92			(129		)	4
	2013 Activity	(3,048		)	—			578			(92		)	(2,562		)	(67	)
	Balance at December 31, 2013	$	535		$	—		$	—		$	—		$	535		4
	Restructuring income	(103		)	—			—			—			(103		)	—
	2014 Activity to date	(47		)	—			—			—			(47		)	—
	Balance at March 31, 2014	$	385		$	—		$	—		$	—		$	385		4

Inventories

Inventories	3 Months Ended
	Mar. 31, 2014
Inventories	'
Inventories	'
	2. Inventories

		March 31, 2014		December 31, 2013

	Raw materials	$	28,906	$	31,603
	Finished goods	79,715		77,914
		$	108,621	$	109,517

	Inventories are recorded net of reserves of $2.0 million and $1.9 million for obsolete and slow-moving items at March 31, 2014 and December 31, 2013, respectively.

Goodwill_Other_Identifiable_In

Goodwill & Other Identifiable Intangible Assets	3 Months Ended
Goodwill & Other Identifiable Intangible Assets	Mar. 31, 2014
Goodwill & Other Identifiable Intangible Assets	'
Goodwill & Other Identifiable Intangible Assets	'
	3. Goodwill & 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, “Intangibles — Goodwill and Other,” 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 amounts of goodwill by segment for the three months ended March 31, 2014 are as follows:

		Activated
		Carbon &
		Service			Equipment			Consumer
		Segment			Segment			Segment			Total

	Balance as of December 31, 2013	$	19,961		$	6,531		$	60		$	26,552
	Foreign exchange	33			(62		)	—			(29		)

	Balance as of March 31, 2014	$	19,994		$	6,469		$	60		$	26,523

	The following is a summary of the Company’s identifiable intangible assets as of March 31, 2014 and December 31, 2013, respectively.

				March 31, 2014
		Weighted Average		Gross Carrying			Foreign			Accumulated			Net Carrying
		Amortization Period		Amount			Exchange			Amortization			Amount

	Amortized Intangible Assets:
	Patents	20.0 Years		$	676		$	—		$	(603	)	$	73
	Customer Relationships	15.9 Years		10,450			(208		)	(8,888		)	1,354
	Product Certification	5.1 Years		7,211			(46		)	(4,035		)	3,130
	Unpatented Technology	18.4 Years		3,183			—			(2,524		)	659
	Licenses	20.0 Years		964			(24		)	(239		)	701
	Total	13.1 Years		$	22,484		$	(278	)	$	(16,289	)	$	5,917

				December 31, 2013
		Weighted Average		Gross Carrying			Foreign			Accumulated			Net Carrying
		Amortization Period		Amount			Exchange			Amortization			Amount

	Amortized Intangible Assets:
	Patents	20.0 Years		$	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

	For the three months ended March 31, 2014 and 2013, the Company recognized $0.5 million of amortization expense related to intangible assets, respectively. As of March 31, 2014, estimated future amortization expense of identifiable intangible assets is $1.6 million for the remaining nine months of 2014. The Company estimates amortization expense to be recognized during the next five years as follows:

	For the year ending December 31:
	2015	$	1,520
	2016	1,293
	2017	497
	2018	306
	2019	150

Borrowing_Arrangements

Borrowing Arrangements	3 Months Ended
	Mar. 31, 2014
Borrowing Arrangements	'
Borrowing Arrangements	'
	4. Borrowing Arrangements

	Short-Term Debt

		March 31,		December 31,
		2014		2013
	Borrowings under Japanese Working Capital Loan	$	3,405	$	1,900
	Borrowings under Chinese Credit Facility	207		272
	Total	$	3,612	$	2,172

	Long-Term Debt

		March 31,		December 31,
		2014		2013
	U.S. Credit Facility Borrowings	$	47,500	$	26,250
	Japanese Term Loan Borrowings	4,378		5,699
	Belgian Loan Borrowings	165		165
	Total	$	52,043	$	32,114

	U.S. Credit Facility

	On November 6, 2013, the Company entered into a new U.S. Credit Agreement (Credit Agreement). 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 as of March 31, 2014 was $175.2 million after considering outstanding letters of credit of $2.3 million 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 as of March 31, 2014 was $75 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%, or (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. An amendment to the Credit Agreement was signed on February 10, 2014 which modified the interest rate charged on amounts owed under swing loans to be either (i) a fluctuating Base Rate as described above or (ii) such other interest rates as the Lender and the Company may agree to from time to time. The interest rate per annum on outstanding borrowings as of March 31, 2014 ranged from 1.16% to 1.20%.

	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 $47.5 million and $26.3 million as of March 31, 2014 and December 31, 2013, respectively, and are shown as long-term debt within the condensed consolidated balance sheet. There were no outstanding borrowings under the Delayed Draw Term Loan as of March 31, 2014 and December 31, 2013. The borrowings and repayments are presented on a gross basis within the Company’s condensed 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 a 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.

	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 Company had 120 thousand Euros, or $0.2 million, of outstanding borrowings under the Belgian Loan as of March 31, 2014 and December 31, 2013, respectively. No further bonds can be called on. The maturity date is April 13, 2018 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 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 March 31, 2014 and December 31, 2013, respectively. Bank guarantees of 0.9 million Euros and 1.0 million Euros were issued as of March 31, 2014 and December 31, 2013, 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 March 31, 2014 and December 31, 2013, 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.

	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 as of March 31, 2014. This loan matures on May 10, 2017. The borrowings and repayments are presented on a gross basis within the Company’s condensed consolidated statements of cash flows. As of March 31, 2014, CCJ had 450 million Japanese Yen or $4.4 million outstanding and recorded as long-term debt within the Company’s condensed consolidated balance sheets. As of December 31, 2013, CCJ had 600 million Japanese Yen or $5.7 million outstanding and recorded as long-term debt within the Company’s condensed consolidated balance sheets.

	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 as of March 31, 2014. On March 17, 2014, CCJ signed an agreement which extended the maturity date of the Japanese Working Capital Loan from April 2, 2014 to April 2, 2015.

	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 condensed consolidated statements of cash flows. As of March 31, 2014, CCJ had 350 million Japanese Yen or $3.4 million outstanding and recorded as short-term debt within the Company’s condensed consolidated balance sheets as the Company intends to repay the borrowings within the next twelve months. As of December 31, 2013, CCJ had 200 million Japanese Yen or $1.9 million outstanding and recorded as short-term debt within the Company’s condensed consolidated balance sheets.

	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 March 31, 2014 was 5.32%. Total outstanding borrowings under this facility were 1.3 million RMB or $0.2 million as of March 31, 2014 and are shown as short-term debt within the Company’s condensed consolidated balance sheets. As of December 31, 2013, total borrowings under this facility were 1.7 million RMB or $0.3 million, and are shown as short-term debt within the Company’s condensed consolidated balance sheets.

Fair_Value_Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2014
Fair Value Measurements	'
Fair Value Measurements	'
	5. 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 4 and 11 for details relating to 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:

		March 31, 2014
		Carrying			Fair Value
		Amount			Total			Level 1		Level 2			Level 3

	Derivative assets	$	1,210		$	1,210		$	—	$	1,210		$	—
	Derivative liabilities	(340		)	(340		)	—		(340		)	—
	Acquisition earn-out liability	(912		)	(912		)	—		(912		)	—
	U.S. credit facility	(47,500		)	(47,500		)	—		(47,500		)	—
	Chinese credit facility	(207		)	(207		)	—		(207		)	—
	Japanese working capital loan	(3,405		)	(3,405		)	—		(3,405		)	—
	Japanese term loan	(4,378		)	(4,378		)	—		(4,378		)	—
	Other loans	(165		)	(165		)	—		(165		)	—


		December 31, 2013
		Carrying			Fair Value
		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		)	—
	Chinese 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		)	—


	Cash and cash equivalents, accounts receivable, and accounts payable included in the condensed consolidated balance sheets approximate fair value and are excluded from the table above. The recorded debt amounts are primarily based on 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 Company’s condensed consolidated balance sheets.

Shareholders_Equity

Shareholders' Equity	3 Months Ended
Shareholders' Equity	Mar. 31, 2014
Shareholders' Equity	'
Shareholders' Equity	'
	6. Shareholders’ Equity

	The Company’s Board of Directors did not declare or pay a dividend for the three months ended March 31, 2014 and 2013.

	In December 2013, the Company’s Board of Directors approved an increase in the overall value of shares authorized for repurchase under a share repurchase program to $150 million. Subsequently, the Company initiated an open market share repurchase program whereby 146,800 shares were repurchased in December 2013 at an average price of $20.37 per share. During the quarter ended March 31, 2014, the Company repurchased an additional 1,013,341 shares at an average price of $20.50 per share. All of the above mentioned repurchases were funded from operating cash flows, cash on hand, and borrowings and the shares are initially held as treasury stock. Subsequent to these repurchases, the Company’s remaining authorization to repurchase its common stock is approximately $126.2 million.

Pensions

Pensions	3 Months Ended
	Mar. 31, 2014
Pensions	'
Pensions	'
	7. Pensions

	U.S. Plans:

	For U.S. plans, the following table provides the components of net periodic pension (benefit) costs of the plans for the periods ended March 31, 2014 and 2013:

		Three Months Ended March 31
		2014			2013
	Service cost	$	251		$	291
	Interest cost	1,199			1,127
	Expected return on plan assets	(1,901		)	(1,667		)
	Amortization of prior service cost	18			19
	Net actuarial loss amortization	276			909
	Net periodic pension (benefit) cost	$	(157	)	$	679

	The expected long-term rate of return on plan assets is 7.75% in 2014.

	Employer Contributions

	In its 2013 financial statements, the Company disclosed that it expected to contribute $1.5 million to its U.S. pension plans in 2014. As of March 31, 2014, the Company has made contributions of $0.3 million. The Company expects to contribute the remaining $1.2 million over the balance of the year.

	European Plans:

	For European plans, the following table provides the components of net periodic pension costs of the plans for the periods ended March 31, 2014 and 2013:

		Three Months Ended March 31
		2014			2013
	Service cost	$	86		$	78
	Interest cost	405			374
	Expected return on plan assets	(377		)	(237		)
	Net actuarial loss (gain) amortization	61			(24		)
	Foreign currency translation	—			6
	Net periodic pension cost	$	175		$	197

	The expected long-term rate of return on plan assets is between 4.00% and 5.60% in 2014.

	Employer Contributions

	In its 2013 financial statements, the Company disclosed that it expected to contribute $2.1 million to its European pension plans in 2014. As of March 31, 2014, the Company contributed $0.4 million. The Company expects to contribute the remaining $1.7 million over the balance of the year.

	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. As of March 31, 2014 and December 31, 2013, respectively, the Company has a $0.6 million liability recorded as a component of payroll and benefits payable. Refer to Note 12 for further information related to this multi-employer plan.

Income_Taxes

Income Taxes	3 Months Ended
Income Taxes	Mar. 31, 2014
Income Taxes	'
Income Taxes	'
	8. Income Taxes

	The effective tax rate for the three months ended March 31, 2014 was 34.4% compared to 30.4% for the three months ended March 31, 2013. The tax rate for the three months ended March 31, 2014 was lower than the U.S. federal statutory rate of 35% due to non-taxable permanent differences. The tax rate for the three months ended March 31, 2013 was lower than the U.S. federal statutory rate primarily due to net tax benefits from the sale of the Company’s activated carbon manufacturing facility in Datong, China which occurred in March 2013.

	Unrecognized Income Tax Benefits

	As of March 31, 2014 and December 31, 2013, the Company’s gross unrecognized income tax benefits were $3.5 million and $3.4 million, respectively. If recognized, $2.4 million of the gross unrecognized tax benefits would affect the effective tax rate at March 31, 2014 and December 31, 2013, 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 March 31, 2014 will be recognized within the next twelve months, based on the expiration of statutory periods, of which $0.1 million will impact the Company’s effective tax rate.

	Subsequent to March 31, 2014, the Company was informed that the IRS completed its joint committee review of the Company’s 2008 amended income tax return. As a result of the conclusion of this examination, the Company will receive an income tax refund of $2.5 million including tax and interest which was recorded in other current assets within the Company’s condensed consolidated balance sheets. Additionally, in the second quarter of 2014, the Company expects to release net uncertain tax positions including related accrued interest and penalties of approximately $1.4 million as a result of the conclusion of this examination all of which will impact the Company’s effective tax rate.

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Income (Loss)	3 Months Ended
Accumulated Other Comprehensive Income (Loss)	Mar. 31, 2014
Accumulated Other Comprehensive Income (Loss)	'
Accumulated Other Comprehensive Income (Loss)	'
	9. Accumulated Other Comprehensive Income (Loss)

	The changes in the components of accumulated other comprehensive income (loss), net of tax, are as follows:

		Foreign									Total Accumulated
		Currency			Pension						Other
		Translation			Benefit						Comprehensive
		Adjustments			Adjustments			Derivatives			Income (Loss)
	Balance, January 1, 2014, net of tax	$	16,793		$	(18,450	)	$	517		$	(1,140	)
	Other comprehensive income (loss) before reclassifications	124			(23		)	(135		)	(34		)
	Amounts reclassified from other comprehensive income (loss)	—			225			(71		)	154
	Net current period other comprehensive income (loss)	124			202			(206		)	120
	Balance, March 31, 2014, net of tax	$	16,917		$	(18,248	)	$	311		$	(1,020	)

		Foreign									Total Accumulated
		Currency			Pension						Other
		Translation			Benefit						Comprehensive
		Adjustments			Adjustments			Derivatives			Income (Loss)
	Balance, January 1, 2013, net of tax	$	17,098		$	(33,718	)	$	93		$	(16,527	)
	Other comprehensive income (loss) before reclassifications	(7,320		)	181			549			(6,590		)
	Amounts reclassified from other comprehensive income (loss)	1,032			(559		)	25			498
	Net current period other comprehensive income (loss)	(6,288		)	(378		)	574			(6,092		)
	Balance, March 31, 2013, net of tax	$	10,810		$	(34,096	)	$	667		$	(22,619	)

	Details about Accumulated	Amount Reclassified from
		Accumulated Other
		Comprehensive Income (Loss)(1)
	Other Comprehensive Income (Loss)	March 31,						Affected Line Item in the Statement
	Components	2014			2013			where Net Income is Presented

	Foreign Currency Translation Adjustments:
	Sale of foreign subsidiary	$	—		$	1,032		Restructuring (2)
		—			1,032			Total before tax
		—			—			Tax (expense) or benefit
		$	—		$	1,032		Net of tax
	Pension Benefit Adjustments:
	Prior-service costs	$	(18	)	$	(19	)	-3
	Actuarial losses	(337		)	(885		)	-3
		(355		)	(904		)	Total before tax
		130			345			Tax (expense) or benefit
		$	(225	)	$	(559	)	Net of tax

	Derivatives:
	Foreign exchange contracts	$	133		$	(170	)	Cost of products sold (excluding depreciation and amortization)
	Natural gas contracts	4			214			Cost of products sold (excluding depreciation and amortization)
		137			44			Total before tax
		(66		)	(19		)	Tax (expense) or benefit
		$	71		$	25		Net of tax
	Total reclassifications for the period	$	(154	)	$	498		Net of tax

	(1) Amounts in parentheses indicate debits to income/loss.
	(2) The adjustment for 2013 relates to the Company’s sale of its activated carbon manufacturing facility in Datong, China.
	(3) These accumulated other comprehensive income (loss) components are included in the computation of net periodic pension cost.

	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 benefit associated with the Company’s pension benefits included in accumulated other comprehensive loss was $9.6 million and $9.7 million at March 31, 2014 and December 31, 2013, respectively. The income tax expense associated with the Company’s derivatives included in accumulated other comprehensive income was $0.2 million and $0.3 million at March 31, 2014 and December 31, 2013, respectively.

	The income tax (expense) benefit associated with foreign currency translation included in other comprehensive income (loss) was $(7) thousand and $(0.2) million for the three months ended March 31, 2014 and 2013, respectively. The income tax (expense) benefit associated with the Company’s pension benefits included in other comprehensive income (loss) was $(0.1) million and $0.3 million for the three months ended March 31, 2014 and 2013, respectively. The income tax (expense) benefit associated with the Company’s derivatives included in other comprehensive income (loss) was $0.1 million and $(0.4) million for the three months ended March 31, 2014 and 2013, respectively.

Supplemental_Cash_Flow_Informa

Supplemental Cash Flow Information	3 Months Ended
Supplemental Cash Flow Information	Mar. 31, 2014
Supplemental Cash Flow Information	'
Supplemental Cash Flow Information	'
	10. Supplemental Cash Flow Information

	Cash paid for interest during the three months ended March 31, 2014 and 2013 was $0.1 million and $0.3 million, respectively. Income taxes paid, net of refunds, for the three months ended March 31, 2014 and 2013, was $3.2 million and $2.1 million, respectively.

	The Company has reflected $0.7 million and $0.1 million of its capital expenditures as a non-cash increase in accounts payable and accrued liabilities for changes in unpaid capital expenditures for the three months ended March 31, 2014 and 2013, respectively.

Derivative_Instruments

Derivative Instruments	3 Months Ended
Derivative Instruments	Mar. 31, 2014
Derivative Instruments	'
Derivative Instruments	'
	11. 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 condensed consolidated balance sheets were as follows:

	Asset Derivatives		Balance Sheet Locations		March 31,			December 31,
	Asset Derivatives		Balance Sheet Locations		2014			2013
	Derivatives designated as hedging instruments under ASC 815:
	Foreign exchange contracts		Other current assets		$	416		$	850
	Natural gas contracts		Other current assets		156			189
	Foreign exchange contracts		Other assets		14			94
	Natural gas contracts		Other assets		1			13

	Total derivatives designated as hedging instruments under ASC 815				587			1,146

	Derivatives not designated as hedging instruments under ASC 815:
	Foreign exchange contracts		Other current assets		518			728
	Foreign exchange contracts		Other assets		105			—

	Total derivatives not designated as hedging instruments under ASC 815				623			728

	Total asset derivatives				$	1,210		$	1,874

	The fair value of outstanding derivative contracts recorded as liabilities in the accompanying condensed consolidated balance sheets were as follows:

	Liability Derivatives		Balance Sheet Locations		March 31,			December 31,
	Liability Derivatives		Balance Sheet Locations		2014			2013
	Derivatives designated as hedging instruments under ASC 815:
	Foreign exchange contracts		Accounts payable and accrued liabilities		$	274		$	391
	Foreign exchange contracts		Accrued pension and other liabilities		22			27
	Natural gas contracts		Accrued pension and other liabilities		36			—

	Total derivatives designated as hedging instruments under ASC 815				332			418

	Derivatives not designated as hedging Instruments under ASC 815:
	Foreign exchange contracts		Accounts payable and accrued liabilities		8			5

	Total liability derivatives				$	340		$	423

	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.

	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 March 31, 2014 was $1.2 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.

	The gross and net amounts of derivative assets and liabilities were as follows (in thousands):

			March 31, 2014						December 31, 2013
			Fair Value			Fair Value of			Fair Value			Fair Value of
			of Assets			Liabilities			of Assets			Liabilities
	Gross derivative amounts recognized in the balance sheet		$	1,210		$	340		$	1,874		$	423
	Gross derivative amounts not offset in the balance sheet that are eligible for offsetting		(304		)	(304		)	(423		)	(423		)
	Net amount		$	906		$	36		$	1,451		$	—

	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 accumulated 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 three months ended March 31, 2014 and 2013, 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.

			Three Months Ended
			March 31,
			2014			2013
	Accumulated OCI derivative gain at January 1		$	874		$	75
Effective portion of changes in fair value		(251		)	1,032
Reclassifications from accumulated OCI derivative to earnings		(137		)	44
Foreign currency translation		32			(87		)
Accumulated OCI derivative gain at March 31		$	518		$	1,064

		Amount of Gain or (Loss)
		Recognized in OCI on Derivatives
		(Effective Portion)
		Three Months Ended
		March 31,
Derivatives in ASC 815 Cash Flow Hedging Relationships:		2014			2013

Foreign exchange contracts		$	(356	)	$	997
Natural gas contracts		105			35
Total		$	(251	)	$	1,032

				Amount of Gain or (Loss)
				Reclassified from Accumulated
				OCI in Income (Effective Portion) (1)
		Location of Gain or		Three Months Ended
Derivatives in ASC 815 Cash Flow		(Loss) Recognized in		March 31,
Hedging Relationships:		Income on Derivatives		2014			2013
Foreign exchange contracts		Cost of products sold
		(excluding depreciation and amortization)		$	133		$	170
Natural gas contracts		Cost of products sold
		(excluding depreciation and amortization)		4			(214		)
Total				$	137		$	(44	)

(1) Assuming market rates remain constant with the rates at March 31, 2014, a gain of $0.2 million is expected to be recognized in earnings over the next 12 months.

				Amount of Gain or (Loss)
				Recognized in Income on
				Derivatives (Ineffective
				Portion and Amount
				Excluded from
				Effectiveness Testing)
		Location of Gain or		Three Months Ended
Derivatives in ASC 815 Cash Flow		(Loss) Recognized in		March 31,
Hedging Relationships:		Income on Derivatives		2014			2013
Foreign exchange contracts		Other expense — net		$	—		$	87
Total				$	—		$	87

The Company had the following outstanding derivative contracts that were entered into to hedge forecasted transactions:

		March 31,			December 31,
(in thousands except for mmbtu)		2014			2013
Natural gas contracts (mmbtu)		755,000			525,000
Foreign exchange contracts		$	45,708		$	44,110


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:

				Amount of Gain or (Loss)
				Recognized in Income on
				Derivatives
		Location of Gain or		Three Months Ended
Derivatives Not Designated as		(Loss) Recognized in		March 31,
Hedging Instruments Under ASC 815:		Income on Derivatives		2014			2013
Foreign exchange contracts (1)		Other expense — net		$	(198	)	$	581
Total				$	(198	)	$	581

(1) As of March 31, 2014 and 2013, these foreign exchange contracts were entered into and settled during the respective periods.

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.

Commitments_and_Contingencies

Commitments and Contingencies	3 Months Ended
Commitments and Contingencies	Mar. 31, 2014
Commitments and Contingencies	'
Commitments and Contingencies	'
	12. Commitments and Contingencies

	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 March 31, 2014 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, 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. 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 $31 thousand and $0.1 million of environmental remediation costs for the periods ended March 31, 2014 and 2013, respectively. 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. The impact of the tariffs to the Company’s financial results was not material for the three months ended March 31, 2014 and 2013, respectively. 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, II, and V related to the periods that ended on March 31, 2008, 2009, and 2012, 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 U.S. 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 Court. 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 is contesting this aspect of the Commerce Department’s redetermination and has submitted comments to the Court 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 Court 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 second 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 Court 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 this 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 scheduled to be announced on May 19, 2014. Based on the agency’s practice in prior administrative reviews, the Company anticipates that the Commerce Department will announce the final results of its administrative review for POR VI in November 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 and 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 consolidated 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% 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.

	Period of Review VII: On April 1, 2014, the Commerce Department published a formal notice allowing parties to request a seventh annual administrative review of the anti-dumping duty order covering the period April 1, 2013 through March 31, 2014 (“POR VII”). Requests for an administrative review were submitted to the Commerce Department in April 2014. The Company expects that the Commerce Department will select the mandatory respondents for POR VII in June 2014. The Commerce Department’s analysis of POR VII will begin in the third quarter of 2014 and the preliminary results of the Commerce Department’s review of POR VII are anticipated to be announced in late April or early May 2015.

	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 which the Court ordered 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 was required under the consent decree to conduct testing of the portion of stockpiled material dredged from onsite wastewater treatment lagoons that had 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. During the first quarter of 2014, the Company took samples of the stockpiled material and is awaiting the results of testing those samples. 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. A liability related to the aforementioned required ongoing testing and sampling was recognized. At March 31, 2014 and December 31, 2013, the balance recorded as a component of accounts payable and accrued liabilities was $0.3 million, respectively. There were no costs recognized for the three months ended March 31, 2014 and 2013, respectively, related to the 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 $11.7 million for the remediation thus far. The PRP Group estimates that approximately $0.2 million of additional costs remain, but has slightly more than $0.7 million of funds available to apply against the final costs and thus currently is forecasting a surplus. 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 and amortization) for the three months ended March 31, 2013.

	Multi-employer Pension Plan

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 previously 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. The Company has had several claims from pensioners seeking compensation for the shortfall. As a result, as of March 31, 2014 and December 31, 2013, respectively, the Company has a $0.6 million liability recorded as a component of payroll and benefits payable 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.

In the first quarter of 2014 the Company also learned that certain pensioners are claiming that the employers should also pay a cost of living adjustment on the amounts paid by the multi-employer plan and that the local Labor Court is expected to decide that issue with respect to a different employer in the fall of 2014. The Company is not agreeing to pay such adjustments at this time. If the Labor Court concludes that the other employer must make such adjustments then the Company may need to consider adjustments in the future. The Company is currently unable to estimate the likelihood that cost of living adjustments will be necessary or to estimate the amount or range of reasonably possible liabilities, if any, resulting from such adjustments.

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 is currently unable to estimate the amount or range of reasonably possible losses, if any, resulting from such lawsuits and claims.

Basic_and_Diluted_Net_Income_P

Basic and Diluted Net Income Per Common Share	3 Months Ended
	Mar. 31, 2014
Basic and Diluted Net Income Per Common Share	'
Basic and Diluted Net Income Per Common Share	'
	13. Basic and Diluted Net Income Per Common Share

	Computation of basic and diluted net income per common share is performed as follows:

		Three Months Ended March 31,
	(Dollars in thousands, except per share amounts)	2014		2013
	Net income available to common shareholders	$	9,809	$	9,814
	Weighted Average Shares Outstanding
	Basic	53,608,465		53,620,349
	Effect of Dilutive Securities	916,902		579,861
	Diluted	54,525,367		54,200,210
	Net income per common share
	Basic and Diluted	$	0.18	$	0.18

	For the three months ended March 31, 2014 and 2013, there were zero and 381,396 of stock options, respectively, which were excluded from the dilutive calculations as the effect would have been antidilutive.

Segment_Information

Segment Information	3 Months Ended
Segment Information	Mar. 31, 2014
Segment Information	'
Segment Information	'
	14. 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:

		Three Months Ended
		March 31,
		2014			2013
	Net sales
	Activated Carbon and Service	$	117,723		$	118,897
	Equipment	10,468			13,908
	Consumer	3,441			2,235
		$	131,632		$	135,040

	Income (loss) from operations before depreciation, amortization, and restructuring
	Activated Carbon and Service	$	22,669		$	20,899
	Equipment	(987		)	393
	Consumer	845			405
		22,527			21,697

	Depreciation and amortization
	Activated Carbon and Service	6,176			5,908
	Equipment	695			677
	Consumer	158			162
		7,029			6,747

	Income from operations before restructuring	15,498			14,950

	Reconciling items:
	Restructuring	103			24
	Interest income	10			124
	Interest expense	(109		)	(177		)
	Other expense — net	(546		)	(828		)
	Income before income tax provision	$	14,956		$	14,093

		March 31, 2014			December 31, 2013
	Total Assets
	Activated Carbon and Service	$	534,094		$	527,430
	Equipment	52,283			55,558
	Consumer	7,819			7,090
	Consolidated total assets	$	594,196		$	590,078

Government_Grants

Government Grants	3 Months Ended
Government Grants	Mar. 31, 2014
Government Grants	'
Government Grants	'
	15. Government Grants

	On December 7, 2007, the Company was 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 1.7 million Euros or $2.2 million of the grant as of December 31, 2013 and received an additional 0.9 million Euros or $1.3 million as of March 31, 2014. The grants have been recognized as a deduction from the carrying amount of the property, plant and equipment on the Company’s condensed consolidated balance sheets in the respective periods received.

New_Accounting_Pronouncements

New Accounting Pronouncements	3 Months Ended
New Accounting Pronouncements	Mar. 31, 2014
New Accounting Pronouncements	'
New Accounting Pronouncements	'
	16. New Accounting Pronouncements

	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 Company adopted this guidance effective January 1, 2014, and the adoption 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 has not had a material impact on the Company’s consolidated financial statements.

Restructuring_Tables

Restructuring (Tables)	3 Months Ended
Restructuring (Tables)	Mar. 31, 2014
Restructuring	'
Summary of restructuring plan and reserve activity	'

	(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
	2012 Activity	(2,551		)	(4,000		)	—			(434		)	(6,985		)	(53	)
	Balance at December 31, 2012	$	3,226		$	—		$	—		$	—		$	3,226		67
	Restructuring charges (income)	357			—			(578		)	92			(129		)	4
	2013 Activity	(3,048		)	—			578			(92		)	(2,562		)	(67	)
	Balance at December 31, 2013	$	535		$	—		$	—		$	—		$	535		4
	Restructuring income	(103		)	—			—			—			(103		)	—
	2014 Activity to date	(47		)	—			—			—			(47		)	—
	Balance at March 31, 2014	$	385		$	—		$	—		$	—		$	385		4

Inventories_Tables

Inventories (Tables)	3 Months Ended
	Mar. 31, 2014
Inventories	'
Schedule of components of inventories	'

		March 31, 2014		December 31, 2013

	Raw materials	$	28,906	$	31,603
	Finished goods	79,715		77,914
		$	108,621	$	109,517

Goodwill_Other_Identifiable_In1

Goodwill & Other Identifiable Intangible Assets (Tables)	3 Months Ended
Goodwill & Other Identifiable Intangible Assets (Tables)	Mar. 31, 2014
Goodwill & Other Identifiable Intangible Assets	'
Schedule of changes in carrying amounts of goodwill by segment	'


		Activated
		Carbon &
		Service			Equipment			Consumer
		Segment			Segment			Segment			Total

	Balance as of December 31, 2013	$	19,961		$	6,531		$	60		$	26,552
	Foreign exchange	33			(62		)	—			(29		)

	Balance as of March 31, 2014	$	19,994		$	6,469		$	60		$	26,523

Summary of identifiable intangible assets	'

				March 31, 2014
		Weighted Average		Gross Carrying			Foreign			Accumulated			Net Carrying
		Amortization Period		Amount			Exchange			Amortization			Amount

	Amortized Intangible Assets:
	Patents	20.0 Years		$	676		$	—		$	(603	)	$	73
	Customer Relationships	15.9 Years		10,450			(208		)	(8,888		)	1,354
	Product Certification	5.1 Years		7,211			(46		)	(4,035		)	3,130
	Unpatented Technology	18.4 Years		3,183			—			(2,524		)	659
	Licenses	20.0 Years		964			(24		)	(239		)	701
	Total	13.1 Years		$	22,484		$	(278	)	$	(16,289	)	$	5,917

				December 31, 2013
		Weighted Average		Gross Carrying			Foreign			Accumulated			Net Carrying
		Amortization Period		Amount			Exchange			Amortization			Amount

	Amortized Intangible Assets:
	Patents	20.0 Years		$	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
Schedule of estimated amortization expense to be recognized during next five years	'


	For the year ending December 31:
	2015	$	1,520
	2016	1,293
	2017	497
	2018	306
	2019	150

Borrowing_Arrangements_Tables

Borrowing Arrangements (Tables)	3 Months Ended
Borrowing Arrangements (Tables)	Mar. 31, 2014
Borrowing Arrangements	'
Schedule of short-term debt	'

		March 31,		December 31,
		2014		2013
	Borrowings under Japanese Working Capital Loan	$	3,405	$	1,900
	Borrowings under Chinese Credit Facility	207		272
	Total	$	3,612	$	2,172
Schedule of long-term debt	'

		March 31,		December 31,
		2014		2013
	U.S. Credit Facility Borrowings	$	47,500	$	26,250
	Japanese Term Loan Borrowings	4,378		5,699
	Belgian Loan Borrowings	165		165
	Total	$	52,043	$	32,114

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2014
Fair Value Measurements	'
Schedule of carrying amount, fair value, and classification within fair value hierarchy of financial instrument assets (liabilities)	'


		March 31, 2014
		Carrying			Fair Value
		Amount			Total			Level 1		Level 2			Level 3

	Derivative assets	$	1,210		$	1,210		$	—	$	1,210		$	—
	Derivative liabilities	(340		)	(340		)	—		(340		)	—
	Acquisition earn-out liability	(912		)	(912		)	—		(912		)	—
	U.S. credit facility	(47,500		)	(47,500		)	—		(47,500		)	—
	Chinese credit facility	(207		)	(207		)	—		(207		)	—
	Japanese working capital loan	(3,405		)	(3,405		)	—		(3,405		)	—
	Japanese term loan	(4,378		)	(4,378		)	—		(4,378		)	—
	Other loans	(165		)	(165		)	—		(165		)	—


		December 31, 2013
		Carrying			Fair Value
		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		)	—
	Chinese 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		)	—

Pensions_Tables

Pensions (Tables)	3 Months Ended
Pensions (Tables)	Mar. 31, 2014
U.S. Plans	'
Pensions	'
Schedule of components of net periodic pension (benefit) costs	'

		Three Months Ended March 31
		2014			2013
	Service cost	$	251		$	291
	Interest cost	1,199			1,127
	Expected return on plan assets	(1,901		)	(1,667		)
	Amortization of prior service cost	18			19
	Net actuarial loss amortization	276			909
	Net periodic pension (benefit) cost	$	(157	)	$	679
European Plans	'
Pensions	'
Schedule of components of net periodic pension (benefit) costs	'

		Three Months Ended March 31
		2014			2013
	Service cost	$	86		$	78
	Interest cost	405			374
	Expected return on plan assets	(377		)	(237		)
	Net actuarial loss (gain) amortization	61			(24		)
	Foreign currency translation	—			6
	Net periodic pension cost	$	175		$	197

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive Income (Loss) (Tables)	3 Months Ended
Accumulated Other Comprehensive Income (Loss) (Tables)	Mar. 31, 2014
Accumulated Other Comprehensive Income (Loss)	'
Schedule of changes in components of accumulated other comprehensive income (loss), net of tax	'


		Foreign									Total Accumulated
		Currency			Pension						Other
		Translation			Benefit						Comprehensive
		Adjustments			Adjustments			Derivatives			Income (Loss)
	Balance, January 1, 2014, net of tax	$	16,793		$	(18,450	)	$	517		$	(1,140	)
	Other comprehensive income (loss) before reclassifications	124			(23		)	(135		)	(34		)
	Amounts reclassified from other comprehensive income (loss)	—			225			(71		)	154
	Net current period other comprehensive income (loss)	124			202			(206		)	120
	Balance, March 31, 2014, net of tax	$	16,917		$	(18,248	)	$	311		$	(1,020	)

		Foreign									Total Accumulated
		Currency			Pension						Other
		Translation			Benefit						Comprehensive
		Adjustments			Adjustments			Derivatives			Income (Loss)
	Balance, January 1, 2013, net of tax	$	17,098		$	(33,718	)	$	93		$	(16,527	)
	Other comprehensive income (loss) before reclassifications	(7,320		)	181			549			(6,590		)
	Amounts reclassified from other comprehensive income (loss)	1,032			(559		)	25			498
	Net current period other comprehensive income (loss)	(6,288		)	(378		)	574			(6,092		)
	Balance, March 31, 2013, net of tax	$	10,810		$	(34,096	)	$	667		$	(22,619	)
Schedule of details about Accumulated Other Comprehensive Income (Loss) Components	'

	Details about Accumulated	Amount Reclassified from
		Accumulated Other
		Comprehensive Income (Loss)(1)
	Other Comprehensive Income (Loss)	March 31,						Affected Line Item in the Statement
	Components	2014			2013			where Net Income is Presented

	Foreign Currency Translation Adjustments:
	Sale of foreign subsidiary	$	—		$	1,032		Restructuring (2)
		—			1,032			Total before tax
		—			—			Tax (expense) or benefit
		$	—		$	1,032		Net of tax
	Pension Benefit Adjustments:
	Prior-service costs	$	(18	)	$	(19	)	-3
	Actuarial losses	(337		)	(885		)	-3
		(355		)	(904		)	Total before tax
		130			345			Tax (expense) or benefit
		$	(225	)	$	(559	)	Net of tax

	Derivatives:
	Foreign exchange contracts	$	133		$	(170	)	Cost of products sold (excluding depreciation and amortization)
	Natural gas contracts	4			214			Cost of products sold (excluding depreciation and amortization)
		137			44			Total before tax
		(66		)	(19		)	Tax (expense) or benefit
		$	71		$	25		Net of tax
	Total reclassifications for the period	$	(154	)	$	498		Net of tax

	(1) Amounts in parentheses indicate debits to income/loss.
	(2) The adjustment for 2013 relates to the Company’s sale of its activated carbon manufacturing facility in Datong, China.
	(3) These accumulated other comprehensive income (loss) components are included in the computation of net periodic pension cost.

Derivative_Instruments_Tables

Derivative Instruments (Tables)	3 Months Ended
Derivative Instruments (Tables)	Mar. 31, 2014
Derivative Instruments	'
Schedule of fair value of outstanding derivative contracts recorded as assets	'


	Asset Derivatives	Balance Sheet Locations		March 31,			December 31,
	Asset Derivatives	Balance Sheet Locations		2014			2013
	Derivatives designated as hedging instruments under ASC 815:
	Foreign exchange contracts	Other current assets		$	416		$	850
	Natural gas contracts	Other current assets		156			189
	Foreign exchange contracts	Other assets		14			94
	Natural gas contracts	Other assets		1			13

	Total derivatives designated as hedging instruments under ASC 815			587			1,146

	Derivatives not designated as hedging instruments under ASC 815:
	Foreign exchange contracts	Other current assets		518			728
	Foreign exchange contracts	Other assets		105			—

	Total derivatives not designated as hedging instruments under ASC 815			623			728

	Total asset derivatives			$	1,210		$	1,874

Schedule of fair value of outstanding derivative contracts recorded as liabilities	'


	Liability Derivatives	Balance Sheet Locations		March 31,			December 31,
	Liability Derivatives	Balance Sheet Locations		2014			2013
	Derivatives designated as hedging instruments under ASC 815:
	Foreign exchange contracts	Accounts payable and accrued liabilities		$	274		$	391
	Foreign exchange contracts	Accrued pension and other liabilities		22			27
	Natural gas contracts	Accrued pension and other liabilities		36			—

	Total derivatives designated as hedging instruments under ASC 815			332			418

	Derivatives not designated as hedging Instruments under ASC 815:
	Foreign exchange contracts	Accounts payable and accrued liabilities		8			5

	Total liability derivatives			$	340		$	423

Schedule of gross and net amounts of derivative assets and liabilities	'
	The gross and net amounts of derivative assets and liabilities were as follows (in thousands):

		March 31, 2014						December 31, 2013
		Fair Value			Fair Value of			Fair Value			Fair Value of
		of Assets			Liabilities			of Assets			Liabilities
	Gross derivative amounts recognized in the balance sheet	$	1,210		$	340		$	1,874		$	423
	Gross derivative amounts not offset in the balance sheet that are eligible for offsetting	(304		)	(304		)	(423		)	(423		)
	Net amount	$	906		$	36		$	1,451		$	—

Schedule of details on changes in accumulated OCI relating to derivative assets and liabilities that qualified for cash flow hedge accounting	'


		Three Months Ended
		March 31,
		2014			2013
	Accumulated OCI derivative gain at January 1	$	874		$	75
	Effective portion of changes in fair value	(251		)	1,032
	Reclassifications from accumulated OCI derivative to earnings	(137		)	44
	Foreign currency translation	32			(87		)
	Accumulated OCI derivative gain at March 31	$	518		$	1,064

		Amount of Gain or (Loss)
		Recognized in OCI on Derivatives
		(Effective Portion)
		Three Months Ended
		March 31,
	Derivatives in ASC 815 Cash Flow Hedging Relationships:	2014			2013

	Foreign exchange contracts	$	(356	)	$	997
	Natural gas contracts	105			35
	Total	$	(251	)	$	1,032

				Amount of Gain or (Loss)
				Reclassified from Accumulated
				OCI in Income (Effective Portion) (1)
		Location of Gain or		Three Months Ended
	Derivatives in ASC 815 Cash Flow	(Loss) Recognized in		March 31,
	Hedging Relationships:	Income on Derivatives		2014			2013
	Foreign exchange contracts	Cost of products sold
		(excluding depreciation and amortization)		$	133		$	170
	Natural gas contracts	Cost of products sold
		(excluding depreciation and amortization)		4			(214		)
	Total			$	137		$	(44	)

	(1) Assuming market rates remain constant with the rates at March 31, 2014, a gain of $0.2 million is expected to be recognized in earnings over the next 12 months.

				Amount of Gain or (Loss)
				Recognized in Income on
				Derivatives (Ineffective
				Portion and Amount
				Excluded from
				Effectiveness Testing)
		Location of Gain or		Three Months Ended
	Derivatives in ASC 815 Cash Flow	(Loss) Recognized in		March 31,
	Hedging Relationships:	Income on Derivatives		2014			2013
	Foreign exchange contracts	Other expense — net		$	—		$	87
	Total			$	—		$	87

Schedule of outstanding derivative contracts	'


		March 31,			December 31,
	(in thousands except for mmbtu)	2014			2013
	Natural gas contracts (mmbtu)	755,000			525,000
	Foreign exchange contracts	$	45,708		$	44,110


Schedule of fair value gains and losses on derivative contracts not qualified for hedge accounting treatment recorded in earnings	'


				Amount of Gain or (Loss)
				Recognized in Income on
				Derivatives
		Location of Gain or		Three Months Ended
	Derivatives Not Designated as	(Loss) Recognized in		March 31,
	Hedging Instruments Under ASC 815:	Income on Derivatives		2014			2013
	Foreign exchange contracts (1)	Other expense — net		$	(198	)	$	581
	Total			$	(198	)	$	581

	(1) As of March 31, 2014 and 2013, these foreign exchange contracts were entered into and settled during the respective periods.

Basic_and_Diluted_Net_Income_P1

Basic and Diluted Net Income Per Common Share (Tables)	3 Months Ended
	Mar. 31, 2014
Basic and Diluted Net Income Per Common Share	'
Schedule of computation of basic and diluted net income per common share	'

		Three Months Ended March 31,
	(Dollars in thousands, except per share amounts)	2014		2013
	Net income available to common shareholders	$	9,809	$	9,814
	Weighted Average Shares Outstanding
	Basic	53,608,465		53,620,349
	Effect of Dilutive Securities	916,902		579,861
	Diluted	54,525,367		54,200,210
	Net income per common share
	Basic and Diluted	$	0.18	$	0.18

Segment_Information_Tables

Segment Information (Tables)	3 Months Ended
Segment Information (Tables)	Mar. 31, 2014
Segment Information	'
Schedule of results of operations and total assets by segment	'

		Three Months Ended
		March 31,
		2014			2013
	Net sales
	Activated Carbon and Service	$	117,723		$	118,897
	Equipment	10,468			13,908
	Consumer	3,441			2,235
		$	131,632		$	135,040

	Income (loss) from operations before depreciation, amortization, and restructuring
	Activated Carbon and Service	$	22,669		$	20,899
	Equipment	(987		)	393
	Consumer	845			405
		22,527			21,697

	Depreciation and amortization
	Activated Carbon and Service	6,176			5,908
	Equipment	695			677
	Consumer	158			162
		7,029			6,747

	Income from operations before restructuring	15,498			14,950

	Reconciling items:
	Restructuring	103			24
	Interest income	10			124
	Interest expense	(109		)	(177		)
	Other expense — net	(546		)	(828		)
	Income before income tax provision	$	14,956		$	14,093

		March 31, 2014			December 31, 2013
	Total Assets
	Activated Carbon and Service	$	534,094		$	527,430
	Equipment	52,283			55,558
	Consumer	7,819			7,090
	Consolidated total assets	$	594,196		$	590,078

Restructuring_Details

Restructuring (Details) (USD $)	3 Months Ended		12 Months Ended
Restructuring (Details) (USD $)	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013	Dec. 31, 2012
Restructuring Charges	'	'	'	'
Restructuring income, reduction in estimated accrual	$100,000	'	'	'
Restructuring charges during period	'	600,000	'	'
Restructuring reserve activity	'	'	'	'
Balance at beginning of period	535,000	3,226,000	3,226,000	'
Restructuring charges (income)	-103,000	-24,000	-129,000	10,211,000
Activity	-47,000	'	-2,562,000	-6,985,000
Balance at end of period	385,000	'	535,000	3,226,000
Employee Termination Benefits	'	'	'	'
Restructuring reserve activity	'	'	'	'
Balance at beginning of period	535,000	3,226,000	3,226,000	'
Restructuring charges (income)	-103,000	'	357,000	5,777,000
Activity	-47,000	'	-3,048,000	-2,551,000
Balance at end of period	385,000	'	535,000	3,226,000
Asset Write-offs	'	'	'	'
Restructuring reserve activity	'	'	'	'
Restructuring charges (income)	'	'	'	4,000,000
Activity	'	'	'	-4,000,000
Gain on Sale	'	'	'	'
Restructuring reserve activity	'	'	'	'
Restructuring charges (income)	'	'	-578,000	'
Activity	'	'	578,000	'
Other Costs	'	'	'	'
Restructuring reserve activity	'	'	'	'
Restructuring charges (income)	'	'	92,000	434,000
Activity	'	'	-92,000	-434,000
Employees Impacted	'	'	'	'
Restructuring reserve activity	'	'	'	'
Number of employees remaining to be paid at beginning of period	'	67	67	'
Number of positions reduced	'	'	4	120
Number of employees to whom amount paid	'	'	-67	-53
Number of employees remaining to be paid at end of period	4	'	4	67
Restructuring charges \| Datong, China activated carbon manufacturing facility	'	'	'	'
Restructuring Charges	'	'	'	'
Pretax gain on sale	'	600,000	'	'
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 $)	Mar. 31, 2014	Dec. 31, 2013
Inventories	'	'
Raw materials	$28,906,000	$31,603,000
Finished goods	79,715,000	77,914,000
Total	108,621,000	109,517,000
Reserves for obsolete and slow-moving items	$2,000,000	$1,900,000

Goodwill_Other_Identifiable_In2

Goodwill & Other Identifiable Intangible Assets (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
	Mar. 31, 2014	Activated Carbon & Service Segment	Equipment Segment	Consumer Segment	Consumer Segment
Segment information	'	'	'	'	'
Balance on the beginning of the period	$26,552	$19,961	$6,531	$60	$60
Foreign exchange	-29	33	-62	'	'
Balance on the end of the period	$26,523	$19,994	$6,469	$60	$60

Goodwill_Other_Identifiable_In3

Goodwill & Other Identifiable Intangible Assets (Details 2) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Summary of identifiable intangible assets	'	'	'
Gross Carrying Amount	$22,484,000	'	$23,178,000
Foreign Exchange	-278,000	'	-286,000
Accumulated Amortization	-16,289,000	'	-17,290,000
Net Carrying Amount	5,917,000	'	5,602,000
Amortization expense	'	'	'
Amortization expense	500,000	500,000	'
Remaining period of 2014	1,600,000	'	'
Estimated amortization expense to be recognized during the next five years	'	'	'
2015	1,520,000	'	'
2016	1,293,000	'	'
2017	497,000	'	'
2018	306,000	'	'
2019	150,000	'	'
Weighted Average	'	'	'
Identifiable intangible assets	'	'	'
Amortization Period	'13 years 1 month 6 days	'	'12 years 10 months 24 days
Patents	'	'	'
Summary of identifiable intangible assets	'	'	'
Gross Carrying Amount	676,000	'	676,000
Accumulated Amortization	-603,000	'	-592,000
Net Carrying Amount	73,000	'	84,000
Patents \| Weighted Average	'	'	'
Identifiable intangible assets	'	'	'
Amortization Period	'20 years	'	'20 years
Customer Relationships	'	'	'
Summary of identifiable intangible assets	'	'	'
Gross Carrying Amount	10,450,000	'	10,450,000
Foreign Exchange	-208,000	'	-209,000
Accumulated Amortization	-8,888,000	'	-8,777,000
Net Carrying Amount	1,354,000	'	1,464,000
Customer Relationships \| Weighted Average	'	'	'
Identifiable intangible assets	'	'	'
Amortization Period	'15 years 10 months 24 days	'	'15 years 10 months 24 days
Product Certification	'	'	'
Summary of identifiable intangible assets	'	'	'
Gross Carrying Amount	7,211,000	'	7,905,000
Foreign Exchange	-46,000	'	-34,000
Accumulated Amortization	-4,035,000	'	-5,237,000
Net Carrying Amount	3,130,000	'	2,634,000
Product Certification \| Weighted Average	'	'	'
Identifiable intangible assets	'	'	'
Amortization Period	'5 years 1 month 6 days	'	'5 years 4 months 24 days
Unpatented Technology	'	'	'
Summary of identifiable intangible assets	'	'	'
Gross Carrying Amount	3,183,000	'	3,183,000
Accumulated Amortization	-2,524,000	'	-2,457,000
Net Carrying Amount	659,000	'	726,000
Unpatented Technology \| Weighted Average	'	'	'
Identifiable intangible assets	'	'	'
Amortization Period	'18 years 4 months 24 days	'	'18 years 4 months 24 days
Licenses	'	'	'
Summary of identifiable intangible assets	'	'	'
Gross Carrying Amount	964,000	'	964,000
Foreign Exchange	-24,000	'	-43,000
Accumulated Amortization	-239,000	'	-227,000
Net Carrying Amount	$701,000	'	$694,000
Licenses \| Weighted Average	'	'	'
Identifiable intangible assets	'	'	'
Amortization Period	'20 years	'	'20 years

Borrowing_Arrangements_Details

Borrowing Arrangements (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Short-term Debt	'	'
Short-term debt	$3,612	$2,172
Japanese Working Capital Loan	'	'
Short-term Debt	'	'
Short-term debt	3,405	1,900
Chinese Credit Facility	'	'
Short-term Debt	'	'
Short-term debt	$207	$272

Borrowing_Arrangements_Details1

Borrowing Arrangements (Details 2) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Long-term Debt	'	'
Long-term debt	$52,043	$32,114
U.S. Credit Facility	'	'
Long-term Debt	'	'
Long-term debt	47,500	26,250
Japanese Term Loan	'	'
Long-term Debt	'	'
Long-term debt	4,378	5,699
Belgian Loan	'	'
Long-term Debt	'	'
Long-term debt	$165	$165

Borrowing_Arrangements_Details2

Borrowing Arrangements (Details 3)

Mar. 31, 2014

Dec. 31, 2013

10-May-13

Mar. 31, 2014

Nov. 06, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Nov. 06, 2013

Mar. 31, 2014

Nov. 06, 2013

Mar. 31, 2014

Dec. 31, 2013

Nov. 06, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Japanese Term Loan due May 2017

Credit Agreement

Belgian Loan

Belgian credit facility

United Kingdom credit facility

Japanese working capital loan

Chinese Credit Facility

CCJ

Uncollateralized Overnight Call Rate

USD ($)

Permitted dividends

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

Base rate borrowings

LIBOR-based borrowings

Letters of credit

USD ($)

EUR (€)

USD ($)

EUR (€)

Bank guarantees

GBP (£)

Bank guarantees

CCJ

Prime rate

USD ($)

CNY

USD ($)

CNY

USD ($)

JPY (¥)

USD ($)

JPY (¥)

CCJ

Minimum

Maximum

USD ($)

Minimum

Maximum

USD ($)

Maximum

Prime rate

Federal funds rate

LIBOR rate

USD ($)

EUR (€)

GBP (£)

USD ($)

JPY (¥)

USD ($)

JPY (¥)

CCJ

USD ($)

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

€ 2,000,000

£ 600,000

¥ 1,500,000,000

$1,600,000

10,000,000

Number of extensions allowed for additional maturity period

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

175,200,000

75,000,000

Borrowing period

'2 years

Number of term loans

Minimum borrowing

15,000,000

Quarterly nonrefundable commitment fee payable (as a percent)

0.15%

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

'Short-term Prime Rate

Margin added to variable rate (as a percent)

0.60%

0.50%

1.00%

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

0.70%

1.16%

1.20%

1.48%

5.32%

Debt issuance costs

700,000

Amount outstanding

$4,400,000

¥ 450,000,000

$5,700,000

¥ 600,000,000

$47,500,000

$26,300,000

$2,300,000

$200,000

€ 120,000

$200,000

€ 120,000

€ 0

€ 900,000

€ 1,000,000

£ 400,000

$3,400,000

¥ 350,000,000

$1,900,000

¥ 200,000,000

$200,000

1,300,000

$300,000

1,700,000

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

275.00%

Interest rate (as a percent)

5.35%

Fair_Value_Measurements_Detail

Fair Value Measurements (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Fair Value Measurements	'	'
Derivative assets	$1,210	$1,874
Derivative liabilities	-340	-423
Recurring \| Total Fair Value	'	'
Fair Value Measurements	'	'
Derivative assets	1,210	1,874
Derivative liabilities	-340	-423
Acquisition earn-out liability	-912	-850
Recurring \| Level 2	'	'
Fair Value Measurements	'	'
Derivative assets	1,210	1,874
Derivative liabilities	-340	-423
Acquisition earn-out liability	-912	-850
Carrying Amount	'	'
Fair Value Measurements	'	'
Derivative assets	1,210	1,874
Derivative liabilities	-340	-423
Acquisition earn-out liability	-912	-850
Carrying Amount \| U.S. credit facility	'	'
Fair Value Measurements	'	'
Debt instrument	-47,500	-26,250
Carrying Amount \| Chinese Credit Facility	'	'
Fair Value Measurements	'	'
Debt instrument	-207	-272
Carrying Amount \| Japanese working capital loan	'	'
Fair Value Measurements	'	'
Debt instrument	-3,405	-1,900
Carrying Amount \| Japanese term loan	'	'
Fair Value Measurements	'	'
Debt instrument	-4,378	-5,699
Carrying Amount \| Other loans	'	'
Fair Value Measurements	'	'
Debt instrument	-165	-165
Fair Value \| U.S. credit facility	'	'
Fair Value Measurements	'	'
Debt instrument	-47,500	-26,250
Fair Value \| Chinese Credit Facility	'	'
Fair Value Measurements	'	'
Debt instrument	-207	-272
Fair Value \| Japanese working capital loan	'	'
Fair Value Measurements	'	'
Debt instrument	-3,405	-1,900
Fair Value \| Japanese term loan	'	'
Fair Value Measurements	'	'
Debt instrument	-4,378	-5,699
Fair Value \| Other loans	'	'
Fair Value Measurements	'	'
Debt instrument	-165	-165
Fair Value \| Level 2 \| U.S. credit facility	'	'
Fair Value Measurements	'	'
Debt instrument	-47,500	-26,250
Fair Value \| Level 2 \| Chinese Credit Facility	'	'
Fair Value Measurements	'	'
Debt instrument	-207	-272
Fair Value \| Level 2 \| Japanese working capital loan	'	'
Fair Value Measurements	'	'
Debt instrument	-3,405	-1,900
Fair Value \| Level 2 \| Japanese term loan	'	'
Fair Value Measurements	'	'
Debt instrument	-4,378	-5,699
Fair Value \| Level 2 \| Other loans	'	'
Fair Value Measurements	'	'
Debt instrument	($165)	($165)

Shareholders_Equity_Details

Shareholders' Equity (Details) (USD $)	0 Months Ended	1 Months Ended	3 Months Ended
In Millions, except Share data, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014
	Mar. 31, 2014	Share repurchase program addition December 2013	Share repurchase program addition December 2013
Shareholders' Equity	'	'	'
Available value of shares authorized for repurchase under the Program	'	$150	'
Shares repurchased	'	146,800	1,013,341
Average purchase price (in dollars per share)	'	$20.37	$20.50
Amount of remaining authorization to repurchase common stock	$126.20	'	'

Pensions_Details

Pensions (Details) (USD $)	3 Months Ended		12 Months Ended
Pensions (Details) (USD $)	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Employer contributions	'	'	'
Employer contributions made	$707,000	$456,000	'
U.S. Plans	'	'	'
Components of net periodic pension (benefit) costs of the plans	'	'	'
Service cost	251,000	291,000	'
Interest cost	1,199,000	1,127,000	'
Expected return on plan assets	-1,901,000	-1,667,000	'
Amortization of prior service cost	18,000	19,000	'
Net actuarial loss (gain) amortization	276,000	909,000	'
Net periodic pension (benefit) cost	-157,000	679,000	'
Assumptions used	'	'	'
Expected long-term rate of return on plan assets (as a percent)	7.75%	'	'
Employer contributions	'	'	'
Expected employer contributions, 2014	'	'	1,500,000
Employer contributions made	300,000	'	'
Expected employer contribution over balance of current year	1,200,000	'	'
European Plans	'	'	'
Components of net periodic pension (benefit) costs of the plans	'	'	'
Service cost	86,000	78,000	'
Interest cost	405,000	374,000	'
Expected return on plan assets	-377,000	-237,000	'
Net actuarial loss (gain) amortization	61,000	-24,000	'
Foreign currency translation	'	6,000	'
Net periodic pension (benefit) cost	175,000	197,000	'
Employer contributions	'	'	'
Expected employer contributions, 2014	'	'	2,100,000
Employer contributions made	400,000	'	'
Expected employer contribution over balance of current year	$1,700,000	'	'
European Plans \| Minimum	'	'	'
Assumptions used	'	'	'
Expected long-term rate of return on plan assets (as a percent)	4.00%	'	'
European Plans \| Maximum	'	'	'
Assumptions used	'	'	'
Expected long-term rate of return on plan assets (as a percent)	5.60%	'	'

Pensions_Details_2

Pensions (Details 2) (Multi-employer pension plan, Payroll and benefits payable, USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Multi-employer pension plan \| Payroll and benefits payable	'	'
Multi-employer pension plan	'	'
Accrued plan liability	$600	$600

Income_Taxes_Details

Income Taxes (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Income Taxes	'	'	'
U.S. federal statutory rate (as a percent)	35.00%	'	'
Effective income tax rate (as a percent)	34.40%	30.40%	'
Gross unrecognized income tax benefits	$3.50	'	$3.40
Gross unrecognized tax benefits that would impact effective tax rate	2.4	'	2.4
Tax benefits	'	'	'
Amount of unrecognized tax benefits that will be recognized in next twelve months that would impact effective tax rate	0.1	'	'
Expiration of statutory periods	'	'	'
Tax benefits	'	'	'
Unrecognized tax benefits that will be realized in the next twelve months	0.4	'	'
Completion of IRS review of 2008 amended income tax return	'	'	'
Tax benefits	'	'	'
Unrecognized tax benefits that will be realized in the next twelve months	1.4	'	'
Completion of IRS review of 2008 amended income tax return \| Expected	'	'	'
Tax benefits	'	'	'
Income tax refund as a result of conclusion of income tax return examination	$2.50	'	'

Accumulated_Other_Comprehensiv2

Accumulated Other Comprehensive Income (Loss) (Details) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Accumulated Other Comprehensive Loss	'	'
Balance, beginning of year, net of tax	($1,140)	($16,527)
Other comprehensive income (loss) before reclassifications	-34	-6,590
Amounts reclassified from other comprehensive income (loss)	154	498
Net current period other comprehensive income (loss)	120	-6,092
Balance, end of year, net of tax	-1,020	-22,619
Foreign Currency Translation Adjustments	'	'
Accumulated Other Comprehensive Loss	'	'
Balance, beginning of year, net of tax	16,793	17,098
Other comprehensive income (loss) before reclassifications	124	-7,320
Amounts reclassified from other comprehensive income (loss)	'	1,032
Net current period other comprehensive income (loss)	124	-6,288
Balance, end of year, net of tax	16,917	10,810
Pension Benefit Adjustments	'	'
Accumulated Other Comprehensive Loss	'	'
Balance, beginning of year, net of tax	-18,450	-33,718
Other comprehensive income (loss) before reclassifications	-23	181
Amounts reclassified from other comprehensive income (loss)	225	-559
Net current period other comprehensive income (loss)	202	-378
Balance, end of year, net of tax	-18,248	-34,096
Derivatives	'	'
Accumulated Other Comprehensive Loss	'	'
Balance, beginning of year, net of tax	517	93
Other comprehensive income (loss) before reclassifications	-135	549
Amounts reclassified from other comprehensive income (loss)	-71	25
Net current period other comprehensive income (loss)	-206	574
Balance, end of year, net of tax	$311	$667

Accumulated_Other_Comprehensiv3

Accumulated Other Comprehensive Income (Loss) (Details 2) (USD $)	3 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013	Dec. 31, 2012
Amount Reclassified from Accumulated Other Comprehensive Income (Loss)	'	'	'	'
Restructuring	$103	$24	$129	($10,211)
Cost of products sold (excluding depreciation and amortization)	-87,463	-92,415	'	'
Income before income tax provision	14,956	14,093	'	'
Tax (expense) or benefit	-5,147	-4,279	'	'
Net income	9,809	9,814	'	'
Amount Reclassified from Accumulated Other Comprehensive Income (Loss)	'	'	'	'
Amount Reclassified from Accumulated Other Comprehensive Income (Loss)	'	'	'	'
Net income	-154	498	'	'
Derivatives \| Amount Reclassified from Accumulated Other Comprehensive Income (Loss)	'	'	'	'
Amount Reclassified from Accumulated Other Comprehensive Income (Loss)	'	'	'	'
Income before income tax provision	137	44	'	'
Tax (expense) or benefit	-66	-19	'	'
Net income	71	25	'	'
Derivatives \| Amount Reclassified from Accumulated Other Comprehensive Income (Loss) \| Foreign Exchange Contracts	'	'	'	'
Amount Reclassified from Accumulated Other Comprehensive Income (Loss)	'	'	'	'
Cost of products sold (excluding depreciation and amortization)	133	-170	'	'
Derivatives \| Amount Reclassified from Accumulated Other Comprehensive Income (Loss) \| Natural gas contracts	'	'	'	'
Amount Reclassified from Accumulated Other Comprehensive Income (Loss)	'	'	'	'
Cost of products sold (excluding depreciation and amortization)	4	214	'	'
Pension Benefit Adjustments \| Amount Reclassified from Accumulated Other Comprehensive Income (Loss)	'	'	'	'
Amount Reclassified from Accumulated Other Comprehensive Income (Loss)	'	'	'	'
Prior-service costs	-18	-19	'	'
Actuarial losses	-337	-885	'	'
Income before income tax provision	-355	-904	'	'
Tax (expense) or benefit	130	345	'	'
Net income	-225	-559	'	'
Foreign Currency Translation Adjustments \| Amount Reclassified from Accumulated Other Comprehensive Income (Loss)	'	'	'	'
Amount Reclassified from Accumulated Other Comprehensive Income (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 $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014	Dec. 31, 2013
	Mar. 31, 2014	Mar. 31, 2013	Pension benefits	Pension benefits	Derivatives	Derivatives
Accumulated Other Comprehensive Income (Loss)	'	'	'	'	'	'
Income tax benefits in accumulated other comprehensive loss	'	'	$9,600,000	$9,700,000	'	'
Income tax expense in accumulated other comprehensive loss	'	'	'	'	200,000	300,000
Income tax (expense) benefits included in other comprehensive income (loss)	'	'	'	'	'	'
Foreign Currency Translation	-7,000	-200,000	'	'	'	'
Pension Benefits	-100,000	300,000	'	'	'	'
Derivatives	$100,000	($400,000)	'	'	'	'

Supplemental_Cash_Flow_Informa1

Supplemental Cash Flow Information (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Supplemental Cash Flow Information	'	'
Interest paid	$0.10	$0.30
Income taxes paid	3.2	2.1
Increase in accounts payable and accrued liabilities for changes in unpaid capital expenditures	$0.70	$0.10

Derivative_Instruments_Details

Derivative Instruments (Details)	3 Months Ended
Derivative Instruments (Details)	Mar. 31, 2014
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 $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Derivative Instruments	'	'
Total asset derivatives	$1,210	$1,874
Derivatives designated as hedging instruments under ASC 815	'	'
Derivative Instruments	'	'
Total asset derivatives	587	1,146
Derivatives designated as hedging instruments under ASC 815 \| Foreign exchange contracts \| Other current assets	'	'
Derivative Instruments	'	'
Total asset derivatives	416	850
Derivatives designated as hedging instruments under ASC 815 \| Foreign exchange contracts \| Other assets	'	'
Derivative Instruments	'	'
Total asset derivatives	14	94
Derivatives designated as hedging instruments under ASC 815 \| Natural gas contracts \| Other current assets	'	'
Derivative Instruments	'	'
Total asset derivatives	156	189
Derivatives designated as hedging instruments under ASC 815 \| Natural gas contracts \| Other assets	'	'
Derivative Instruments	'	'
Total asset derivatives	1	13
Derivatives not designated as hedging instruments under ASC 815	'	'
Derivative Instruments	'	'
Total asset derivatives	623	728
Derivatives not designated as hedging instruments under ASC 815 \| Foreign exchange contracts \| Other current assets	'	'
Derivative Instruments	'	'
Total asset derivatives	518	728
Derivatives not designated as hedging instruments under ASC 815 \| Foreign exchange contracts \| Other assets	'	'
Derivative Instruments	'	'
Total asset derivatives	$105	'

Derivative_Instruments_Details2

Derivative Instruments (Details 3) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Derivative Instruments	'	'
Total liability derivatives	$340	$423
Derivatives designated as hedging instruments under ASC 815	'	'
Derivative Instruments	'	'
Total liability derivatives	332	418
Derivatives designated as hedging instruments under ASC 815 \| Foreign exchange contracts \| Accounts payable and accrued liabilities	'	'
Derivative Instruments	'	'
Total liability derivatives	274	391
Derivatives designated as hedging instruments under ASC 815 \| Foreign exchange contracts \| Accrued pension and other liabilities	'	'
Derivative Instruments	'	'
Total liability derivatives	22	27
Derivatives designated as hedging instruments under ASC 815 \| Natural gas forward contracts \| Accrued pension and other liabilities	'	'
Derivative Instruments	'	'
Total liability derivatives	36	'
Derivatives not designated as hedging instruments under ASC 815 \| Foreign exchange contracts \| Accounts payable and accrued liabilities	'	'
Derivative Instruments	'	'
Total liability derivatives	$8	$5

Derivative_Instruments_Details3

Derivative Instruments (Details 4) (USD $)	Mar. 31, 2014	Dec. 31, 2013
Derivative Instruments	'	'
Aggregate fair value of derivative instruments in asset positions and maximum loss if all counterparties failed to perform as contracted	$1,200,000	'
Fair Value of Assets	'	'
Gross derivative amounts recognized in the balance sheet	1,210,000	1,874,000
Gross derivative amounts not offset in the balance sheet that are eligible for offsetting	'	'
Gross derivative amounts not offset that are eligible for offsetting	-304,000	-423,000
Net amount	906,000	1,451,000
Fair Value of Liabilities	'	'
Gross derivative amounts recognized in the balance sheet	340,000	423,000
Gross derivative amounts not offset in the balance sheet that are eligible for offsetting	'	'
Gross derivative amounts not offset that are eligible for offsetting	-304,000	-423,000
Net amount	$36,000	'

Derivative_Instruments_Details4

Derivative Instruments (Details 5) (Accumulated OCI derivative gain or (loss), USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Accumulated OCI derivative gain or (loss)	'	'
Changes in accumulated OCI	'	'
Accumulated OCI at beginning of period	$874	$75
Effective portion of changes in fair value	-251	1,032
Reclassifications from accumulated OCI derivative to earnings	-137	44
Foreign currency translation	32	-87
Accumulated OCI at end of period	$518	$1,064

Derivative_Instruments_Details5

Derivative Instruments (Details 6) (USD $)	3 Months Ended
Derivative Instruments (Details 6) (USD $)	Mar. 31, 2014	Mar. 31, 2013
Derivative Instruments	'	'
Amount of gain relating to accumulated OCI expected to be recognized in earnings over the next 12 months	$200,000	'
Cash flow hedges	'	'
Derivative Instruments	'	'
Amount of Gain or (Loss) Recognized in OCI on Derivatives (Effective Portion)	-251,000	1,032,000
Amount of Gain or (Loss) Reclassified from Accumulated OCI in Income (Effective Portion)	137,000	-44,000
Amount of Gain or (Loss) Recognized in Income on Derivatives (Ineffective Portion and Amount Excluded from Effectiveness Testing)	'	87,000
Cash flow hedges \| Foreign exchange contracts	'	'
Derivative Instruments	'	'
Amount of Gain or (Loss) Recognized in OCI on Derivatives (Effective Portion)	-356,000	997,000
Cash flow hedges \| Foreign exchange contracts \| Cost of products sold (excluding depreciation and amortization)	'	'
Derivative Instruments	'	'
Amount of Gain or (Loss) Reclassified from Accumulated OCI in Income (Effective Portion)	133,000	170,000
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)	'	87,000
Cash flow hedges \| Natural gas forward contracts	'	'
Derivative Instruments	'	'
Amount of Gain or (Loss) Recognized in OCI on Derivatives (Effective Portion)	105,000	35,000
Cash flow hedges \| Natural gas forward contracts \| Cost of products sold (excluding depreciation and amortization)	'	'
Derivative Instruments	'	'
Amount of Gain or (Loss) Reclassified from Accumulated OCI in Income (Effective Portion)	$4,000	($214,000)

Derivative_Instruments_Details6

Derivative Instruments (Details 7) (USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	MMBTU	MMBTU
Natural gas forward contracts	'	'
Derivative Instruments	'	'
Outstanding derivative contracts that were entered into to hedge forecasted transactions (in mmbtu)	755,000	525,000
Foreign exchange contracts	'	'
Derivative Instruments	'	'
Outstanding derivative contracts that were entered into to hedge forecasted transactions	45,708	44,110

Derivative_Instruments_Details7

Derivative Instruments (Details 8) (USD $)	3 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Derivative Instruments	'	'
Amount of Gain or (Loss) Recognized in Income on Derivatives Not Designated as Hedging Instruments Under ASC 815	($198)	$581
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	($198)	$581

Derivative_Instruments_Details8

Derivative Instruments (Details 9)	3 Months Ended
Derivative Instruments (Details 9)	Mar. 31, 2014
Minimum	'
Managing foreign currency and natural gas exposure	'
Percentage of the forecasted natural gas requirements to be hedged by using derivatives	0.00%
Maximum	'
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	75.00%
Foreign exchange contracts \| Maximum	'
Managing foreign currency and natural gas exposure	'
Maturity period of derivatives	'18 months
Natural gas forward contracts \| Minimum	'
Managing foreign currency and natural gas exposure	'
Maturity period of derivatives	'1 month
Natural gas forward contracts \| Maximum	'
Managing foreign currency and natural gas exposure	'
Maturity period of derivatives	'18 months

Commitments_and_Contingencies_

Commitments and Contingencies (Details) (USD $)

3 Months Ended

12 Months Ended

13 Months Ended

1 Months Ended

12 Months Ended

0 Months Ended

1 Months Ended

3 Months Ended

Mar. 31, 2014

Mar. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Feb. 24, 2014

Dec. 31, 2010

Mar. 31, 2014

Dec. 31, 2013

Mar. 31, 2014

Mar. 31, 2013

Aug. 31, 2008

Mar. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Nov. 30, 2009

Dec. 31, 2008

Dec. 31, 2012

Dec. 31, 2011

Dec. 31, 2010

Jan. 09, 2014

Aug. 15, 2013

Oct. 31, 2011

Nov. 09, 2012

Nov. 26, 2013

Jun. 26, 2013

Dec. 18, 2012

Jun. 06, 2012

Mar. 18, 2013

Mar. 31, 2012

Nov. 30, 2013

Mar. 31, 2014

Waterlink's Columbus, Ohio property

Big Sandy Plant

Frontier Chemical Processing Royal Avenue Site

Continued Dumping and Subsidy Offset Act Distributions

Period of Review III

Period of Review IV

Period of Review V

Period of Review VI

Sunset Review

Carbon Imports - Anti-dumping duties

Accounts payable and accrued liabilities

Accrued pension and other liabilities

item

Accounts payable and accrued liabilities

Minimum

Estimated

item

Jacobi Carbons AB

Ningxia Huahui Activated Carbon Co., Ltd.

item

Jacobi Carbons AB

Ningxia Huahui Activated Carbon Co., Ltd.

item

periodofreview

item

Contingencies

Recorded liability estimates for environmental loss contingencies

$400,000

$300,000

Environmental remediation costs

31,000

100,000

Accrued potential loss

2,000,000

Reduction in previously recorded liabilities

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

Amount spent by PRP Group for remediation

11,700,000

Additional PRP Group environmental remediation costs

200,000

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

700,000

Import duty (in dollars per pound)

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

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

0.00%

Receivable recorded for anticipated refunds of anti-dumping duties

1,100,000

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

0.127

Number of respondents applied with per-unit rates

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)

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

Number of mandatory respondents

Period for possible continuation of anti-dumping tariff

'5 years

Extension period for continuation of anti-dumping tariff

'5 years

Distributions received under Continued Dumping and Subsidy Offset Act

100,000

1,800,000

800,000

200,000

Distributions received as a percentage of total amount of duties available

59.57%

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

1,500,000

Penalty amount

$1,600,000

Number of ground water monitoring wells to be installed

Commitments_and_Contingencies_1

Commitments and 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

Commitments_and_Contingencies_2

Commitments and Contingencies (Details 3) (Multi-employer pension plan, Payroll and benefits payable, USD $)	Mar. 31, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Multi-employer pension plan \| Payroll and benefits payable	'	'
Multi-employer pension plan	'	'
Accrued plan liability	$600	$600

Basic_and_Diluted_Net_Income_P2

Basic and Diluted Net Income Per Common Share (Details) (USD $)	3 Months Ended
In Thousands, except Share data, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013
Basic and Diluted Net Income Per Common Share	'	'
Net income available to common shareholders	$9,809	$9,814
Weighted Average Shares Outstanding	'	'
Basic (in shares)	53,608,465	53,620,349
Effect of Dilutive Securities (in shares)	916,902	579,861
Diluted (in shares)	54,525,367	54,200,210
Net income per common share Basic and Diluted (in dollars per share)	$0.18	$0.18
Antidilutive options excluded from calculation of net income per common share (in shares)	0	381,396

Segment_Information_Details

Segment Information (Details) (USD $)	3 Months Ended		12 Months Ended
In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013	Dec. 31, 2012
	item	Mar. 31, 2013	Dec. 31, 2013	Dec. 31, 2012
Segment Information	'	'	'	'
Number of reportable segments	3	'	'	'
Segment Information	'	'	'	'
Net Sales	$131,632	$135,040	'	'
Depreciation and amortization	7,029	6,747	'	'
Income from operations	15,601	14,974	'	'
Restructuring	103	24	129	-10,211
Interest income	10	124	'	'
Interest expense	-109	-177	'	'
Other expense - net	-546	-828	'	'
Income before income tax provision	14,956	14,093	'	'
Total assets	594,196	'	590,078	'
Activated Carbon and Service	'	'	'	'
Segment Information	'	'	'	'
Net Sales	117,723	118,897	'	'
Income (loss) from operations before depreciation, amortization, and restructuring	22,669	20,899	'	'
Depreciation and amortization	6,176	5,908	'	'
Total assets	534,094	'	527,430	'
Equipment	'	'	'	'
Segment Information	'	'	'	'
Net Sales	10,468	13,908	'	'
Income (loss) from operations before depreciation, amortization, and restructuring	-987	393	'	'
Depreciation and amortization	695	677	'	'
Total assets	52,283	'	55,558	'
Consumer	'	'	'	'
Segment Information	'	'	'	'
Net Sales	3,441	2,235	'	'
Income (loss) from operations before depreciation, amortization, and restructuring	845	405	'	'
Depreciation and amortization	158	162	'	'
Total assets	7,819	'	7,090	'
Business operating segments	'	'	'	'
Segment Information	'	'	'	'
Income (loss) from operations before depreciation, amortization, and restructuring	22,527	21,697	'	'
Income from operations	$15,498	$14,950	'	'

Government_Grants_Details

Government Grants (Details) (Walloon Region Grant)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014	Mar. 31, 2014	Dec. 31, 2013	Dec. 31, 2013	Dec. 07, 2007	Dec. 07, 2007
	USD ($)	EUR (€)	USD ($)	EUR (€)	USD ($)	EUR (€)
					item
Government Grants	'	'	'	'	'	'
Number of grants awarded	'	'	'	'	2	2
Total grants awarded	'	'	'	'	$3.40	€ 2.60
Amount received recognized as deduction from the carrying amount of the property, plant and equipment	'	'	2.2	1.7	'	'
Additional amount received recognized as deduction from the carrying amount of the property, plant and equipment	$1.30	€ 0.90	'	'	'	'