Om 10-Q 30 Apr 15 2015 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2015	Apr. 29, 2015
Document And Entity Information [Abstract]
Entity Registrant Name	OM GROUP INC
Entity Central Index Key	899723
Current Fiscal Year End Date	-19
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	31-Mar-15
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Amendment Flag	FALSE
Entity Common Stock, Shares Outstanding		30,347,329

Unaudited_Condensed_Consolidat

Unaudited Condensed Consolidated Balance Sheets (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
Current assets
Cash and cash equivalents	$53.10	$91.70
Accounts receivable, less allowance of $2.8 in 2015 and $2.5 in 2014	152.2	134.5
Inventories	214.2	228.4
Other current assets	25.8	21.5
Total current assets	445.3	476.1
Property, plant and equipment, net	277.3	308.3
Goodwill	244.5	252.6
Intangible assets, net	296.7	324.8
Other non-current assets	48.3	57.7
Total assets	1,312.10	1,419.50
Current liabilities
Revolving credit facility	40.1	12.5
Accounts payable	78.3	74.7
Accrued employee costs	34.9	34.9
Purchase price of VAC payable to seller	4.1	46.2
Other current liabilities	50.9	57.4
Total current liabilities	208.3	225.7
Deferred income taxes	67.5	74.8
Pension liabilities	223.3	244.4
Other non-current liabilities	34.2	37.7
Stockholders’ equity:
Preferred stock, $.01 par value: Authorized 2,000,000 shares, no shares issued or outstanding	0	0
Common stock, $.01 par value: Authorized 90,000,000 shares; 32,492,755 shares issued in 2015 and 32,408,222 shares issued in 2014	0.3	0.3
Capital in excess of par value	650.6	647.3
Retained earnings	391.8	405.3
Treasury stock (2,151,981 shares in 2015 and 2,136,116 shares in 2014, at cost)	-58.7	-58.2
Accumulated other comprehensive loss	-205.2	-157.8
Total stockholders' equity	778.8	836.9
Total liabilities and and stockholders' equity	$1,312.10	$1,419.50

Unaudited_Condensed_Consolidat1

Unaudited Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Thousands, except Share data, unless otherwise specified
Statement of Financial Position [Abstract]
Allowance for Doubtful Accounts Receivable, Current	$2,800	$2,500
Preferred Stock, Par or Stated Value Per Share (in usd per share)	$0.01	$0.01
Preferred Stock, Shares Authorized (in shares)	2,000,000	2,000,000
Preferred Stock, Shares Issued (in shares)	0	0
Preferred Stock, Shares Outstanding (in shares)	0	0
Common Stock, Par or Stated Value Per Share (in usd per share)	$0.01	$0.01
Common Stock, Shares Authorized (in shares)	90,000,000	90,000,000
Common Stock, Shares, Issued (in shares)	32,492,755	32,408,222
Treasury Stock, Shares (in shares)	2,151,981	2,136,116

Unaudited_Condensed_Statements

Unaudited Condensed Statements of Consolidated Operations (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Income Statement [Abstract]
Net sales	$247.80	$261.70
Cost of goods sold	197.5	199.8
Gross profit	50.3	61.9
Selling, general and administrative expenses	54.8	53.4
Operating profit (loss)	-4.5	8.5
Other income (expense):
Interest expense	-0.6	-0.7
Foreign exchange loss	-4.4	-0.3
Gain (loss) on divestiture of Advanced Materials business	2	-0.2
Charges associated with VAC arbitration conclusion	-10.4	0
Other income (expense), net	2.9	-0.6
Income (loss) from continuing operations before income tax expense	-15	6.7
Income tax (benefit) expense	-3.9	1.4
Income (loss) from continuing operations, net of tax	-11.1	5.3
Income (loss) from discontinued operations, net of tax	0.1	-0.1
Consolidated net income (loss)	($11)	$5.20
Earnings (loss) per common share — basic:
Income (loss) from continuing operations (in dollars per share)	($0.37)	$0.17
Income (loss) from discontinued operations (in dollars per share)	$0.01	$0
Net income (loss) (in dollars per share)	($0.36)	$0.17
Earnings (loss) per common share — assuming dilution:
Income (loss) from continuing operations (in dollars per share)	($0.37)	$0.16
Income (loss) from discontinued operations (in dollars per share)	$0.01	$0
Net income (loss) (in dollars per share)	($0.36)	$0.16
Weighted average shares outstanding
Basic (in shares)	30.3	31.5
Assuming dilution (in shares)	30.3	31.9
Dividends declared per common share (in dollars per share)	$0.08	$0.08

Unaudited_Statements_of_Consol

Unaudited Statements of Consolidated Comprehensive Income (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
Consolidated net income (loss)	($11)	$5.20
Foreign currency translation adjustments	-44.5	-2
Reclassification of foreign currency translation adjustment related to the sale of property into earnings	-3.5	0
Reclassification of hedging activities into earnings, net of tax	0	0.1
Unrealized gain (loss) on cash flow hedges, net of tax	-0.2	0.1
Pension adjustment, net of tax	0.8	0.1
Net change in accumulated other comprehensive loss	-47.4	-1.7
Comprehensive income (loss)	($58.40)	$3.50

Unaudited_Condensed_Statements1

Unaudited Condensed Statements of Consolidated Cash Flows (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Operating activities
Consolidated net income (loss)	($11)	$5.20
Adjustments to reconcile consolidated net income (loss) to net cash used for operating activities:
(Gain) loss from discontinued operations	-0.1	0.1
Depreciation and amortization	14.9	18.1
Amortization of deferred financing fees	0.3	0.3
Share-based compensation expense	3.2	2.6
Foreign exchange loss	4.4	0.3
(Gain) loss on divestiture of Advanced Materials business	-2	0.2
Deferred income tax benefit	-0.7	-1
Other non-cash items	-1.2	1
Changes in operating assets and liabilities, excluding the effect of divestitures:
Accounts receivable	-27.5	-0.8
Inventories	-3.9	-4
Accounts payable	9.2	-20.8
Other, net	-0.8	-4
Net cash used for operating activities	-15.2	-2.8
Investing activities
Expenditures for property, plant and equipment	-4.6	-3.2
Cash received from acquisition purchase price adjustments	1.5	0
Proceeds from sale of property	1.2	0
Net cash used for investing activities	-1.9	-3.2
Financing activities
Payments related to VAC purchase price payable	-41.8	0
Net proceeds from revolving credit facility	27.6	0
Dividends paid	-2.5	-2.4
Proceeds from exercise of stock options	0.1	0.5
Debt issuance costs	-0.1	-0.1
Payment related to surrendered shares	-0.5	-0.7
Net cash used for financing activities	-17.2	-2.7
Effect of exchange rate changes on cash	-4.2	-0.1
Cash and cash equivalents
Decrease from continuing operations	-38.5	-8.8
Discontinued operations - net cash used by operating activities	-0.1	0
Balance at the beginning of the period	91.7	118.4
Balance at the end of the period	$53.10	$109.60

Basis_of_Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation
	Principles of Consolidation — OM Group, Inc. (the “Company”, “we”, “our”, “us”) is a technology-driven industrial company serving attractive global markets, including automotive systems, electronic devices, aerospace and defense, industrial and medical. We use innovative technologies to address customers' complex applications and demanding requirements. Our strategy is to grow organically through product and application innovation and new market and customer development, to grow strategically through complementary acquisitions to build-out our growth platforms, and to maximize total stockholder returns through a combination of business growth, financial discipline, optimal deployment of capital and continued operational excellence. Our objective is to deliver sustainable, profitable growth and create long-term stockholder value. The consolidated financial statements include the accounts of OM Group and its consolidated subsidiaries. We were formed in 1991 as a Delaware corporation. Intercompany accounts and transactions have been eliminated in consolidation.
	Certain financial data may have been rounded. As a result of such rounding, the totals of data presented in this document may vary slightly from the actual arithmetical totals of such data.
	On November 24, 2014, we completed the acquisition of Ener-Tek International, Inc., which operates under the brand name Yardney Technical Products ("Yardney"), and now operates as a part of our Battery Technologies business. Based in East Greenwich, Rhode Island, Yardney is a designer, developer and manufacturer of high-performance lithium-ion and silver-zinc cells and batteries for niche applications in the defense and aerospace markets. We funded the initial $24.6 million acquisition price through existing cash balances. During the first quarter ending March 31, 2015, a post-closing working capital settlement resulted in a $1.5 million purchase price reduction.
	These financial statements have been prepared in accordance with U.S. generally accepted accounting principles for interim financial information and the instructions to Form 10-Q and do not include all of the information and footnotes required by U.S. generally accepted accounting principles for complete financial statements. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation of our financial position at March 31, 2015 and the results of our income (loss), comprehensive income (loss) and cash flows for the three months ended March 31, 2015 and 2014 have been included. The balance sheet at December 31, 2014 has been derived from the audited consolidated financial statements at that date but does not include all of the information or notes required by U.S. generally accepted accounting principles for complete financial statements. Past operating results are not necessarily indicative of the results which may occur in future periods, and the interim period results are not necessarily indicative of the results to be expected for the full year. These Unaudited Condensed Consolidated Financial Statements should be read in conjunction with the consolidated financial statements and notes thereto included in our Annual Report on Form 10-K for the year ended December 31, 2014.

Recently_Issued_Accounting_Gui

Recently Issued Accounting Guidance	3 Months Ended
	Mar. 31, 2015
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Recently Issued Accounting Guidance	Recently Issued Accounting Guidance
	Accounting Guidance adopted in 2014
	In May 2014, the FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606)” (“ASU 2014-09”). The update amends the guidance for revenue recognition to replace numerous, industry-specific requirements and converges areas under this topic with those of the International Financial Reporting Standards. The amendments are effective for reporting periods beginning after December 15, 2016, and early adoption is prohibited. Entities can transition to the standard either retrospectively or as a cumulative-effect adjustment as of the date of adoption. We are currently assessing the impact the adoption of ASU 2014-09 may have on our results of operations or financial position.
	In April 2015, the FASB issued ASU No. 2015-03, “Interest - Imputation of Interest” (“ASU 2015-03”). The update amends the guidance for presenting deferred debt costs on the balance sheet and requires that the costs are recorded as a deduction from the carrying amount of debt. The amendments are effective for reporting periods beginning after December 15, 2015, and early adoption is permitted. We are currently assessing the impact the adoption of ASU 2015-03 and believe the impact will not be material to our financial position.

Inventories

Inventories	3 Months Ended
	Mar. 31, 2015
Inventory, Net [Abstract]
Inventories	Inventories
	Inventories consist of the following:
		March 31,		December 31,
		2015		2014
	Raw materials and supplies	$	66.7	$	73.6
	Work-in-process	112.5		118.1
	Finished goods	35		36.7
		$	214.2	$	228.4

Acquisitions_and_Divestitures

Acquisitions and Divestitures	3 Months Ended
	Mar. 31, 2015
Business Combinations [Abstract]
Acquisitions and Divestitures	Acquisitions and Divestitures
	(a) Acquisitions
	Yardney
	On November 24, 2014. we completed the acquisition Yardney. Based in East Greenwich, Rhode Island, Yardney is a designer, developer and manufacturer of high-performance lithium-ion and silver-zinc cells and batteries for niche applications in the defense and aerospace markets. We funded the initial $24.6 million acquisition price through existing cash balances at the time of the acquisition. The balance sheet at the acquisition date was based on preliminary estimated purchase accounting. In the first quarter ending March 31, 2015, we agreed on the closing working capital with the seller which resulted in a post-closing purchase price reduction of $1.5 million. The updated purchase price of $23.1 million, after the working capital settlement and other minor purchase accounting adjustments, resulted in a preliminary allocation of $12.7 million of net assets, including $6.5 million of identifiable intangibles. The remaining $10.4 million was recorded as goodwill, which is not expected to be deductible for tax purposes.
	VAC
	Our Magnetic Technologies segment consists of VAC Holding GmbH ("VAC"), which we acquired in 2011. The total purchase price of $812.2 million included cash consideration of $686.2 million, withheld consideration of $86.3 million, and the issuance of Company shares valued at $39.7 million. The withheld consideration relates to potential indemnification claims made by OM Group and accepted by the seller, if any, within two years of the closing date of the acquisition with certain exceptions related to tax matters. In August 2013, we remitted a payment of $23.0 million to the seller of VAC and entered into arbitration with the seller to determine the outcome of the remaining withheld consideration. In December 2014, we withdrew one claim related to certain potential tax obligations and remitted a payment of $16.2 million to the seller of VAC and charged certain tax assessments related to pre-acquisition tax years of $1.6 million against the outstanding withholding liability. In March 2015, the arbitration decision was issued addressing the remaining declaratory actions we had undertaken in support of our indemnification claims and we remitted a payment of $52.5 million to the seller of VAC. The payment consisted of the remaining non-tax related withholding liability of $41.8 million and $10.7 million in charges associated with the arbitration conclusion, which included interest charges and legal fee reimbursement. The remainder of the purchase price of VAC payable to the seller of $4.1 million is tax related and will be resolved when all open tax examinations are completed by the tax authorities in the various jurisdictions, which we expect to occur in 2015. Due to the length of time over which these withholding liability payments are being made, these payments are classified as financing activities within the Unaudited Condensed Consolidated Statement of Cash Flows.
	(b) Divestitures
	Advanced Materials
	On March 29, 2013, we completed the divestiture of our cobalt-based business. The transaction comprised the sale of the downstream portion of the business (including our cobalt refinery assets in Kokkola, Finland), and the transfer of our equity interests in the DRC-based joint venture, known as GTL, to the joint venture partners, subject to a security interest in our favor with respect to the joint venture's performance related to certain supply arrangements.
	The sale agreement for the downstream portion of the business also provides for potential future additional cash consideration of up to $110.0 million based on the business achieving certain revenue targets over a period of three years. Using our projected trends of cobalt prices and volumes, it is not probable that the business will meet the revenue targets, and no value was assigned to the potential future cash consideration while calculating the loss on the divestiture at December 31, 2014 or March 31, 2015.
	Following the sale, to assist in the transition of the downstream business, we entered into two agreements with the buyer pursuant to which: (1) We acted as intermediary in a supply agreement between GTL and the buyer, in back-to-back arrangements for a period of two years. We met the cobalt feed supply target under that agreement in October 2014. The supply agreement terminated as of March 31, 2015 and we expect all related activity under the performance of the agreement to be completed in the second quarter of 2015. (2) We also served as the U.S. distributor for refined cobalt products in primarily back-to-back arrangements until December 31, 2013.

Debt

Debt	3 Months Ended
	Mar. 31, 2015
Debt Instruments [Abstract]
Debt	Debt
	On September 4, 2013, we entered into a five-year Senior Secured Revolving Credit Facility (“the Facility”), and terminated our previous credit facility dated August 2, 2011 that was scheduled to expire in August 2016. The Facility provides for $350 million of revolving borrowing capacity and includes an expansion option of up to an additional $150 million, subject to certain conditions. The borrowers under the Facility are the Company, Harko C.V. (“Harko”), a limited partnership organized under the laws of the Netherlands, and VAC Germany GmbH (“VAC”), a limited liability company under the laws of Germany. Harko and VAC are wholly-owned subsidiaries of the Company. The Facility matures on September 4, 2018.
	The obligations of the Company under the Facility are guaranteed by certain of the Company’s material U.S. subsidiaries. The obligations of Harko and VAC under the Facility are guaranteed by the Company and certain of the Company’s material subsidiaries, subject to certain exceptions including financial assistance limitations in certain foreign jurisdictions. In addition, the obligations of the Company under the Facility are secured by a first priority security interest in substantially all of the existing and future personal property of the Company and certain of the Company’s material U.S. subsidiaries, including 65% of the voting capital stock of certain of the Company’s direct foreign subsidiaries. The obligations of Harko and VAC under the Facility are secured by a first priority security interest in certain of the existing and future personal property of Harko, VAC and certain of the Company’s subsidiaries and a 100% pledge of the voting capital stock of certain of the Company’s subsidiaries, subject to certain exceptions, including financial assistance limitations in certain foreign jurisdictions.
	The interest rates applicable to loans under the Facility will be at our option and equal to either a base rate or a LIBOR rate, in each case plus an applicable margin percentage. The base rate will be the highest of (i) the federal funds rate plus 0.50%, (ii) the prime rate or (iii) the LIBOR rate with a maturity of one month plus 1.00%. The applicable margin percentage is based on the leverage ratio of the Company. The range of the applicable margin percentage is 1.125% to 2.000% in the case of LIBOR advances and 0.125% to 1.000% in the case of base rate advances.
	The Facility contains customary representations and warranties and certain covenants that limit the ability of the Company and its restricted subsidiaries to, among other things: (i) incur or guarantee additional indebtedness; (ii) redeem, repurchase or pay distributions on capital stock or redeem or repurchase subordinated debt; (iii) make investments; (iv) sell assets; (v) enter into agreements that restrict distributions or other payments from restricted subsidiaries to the Company; (vi) incur or suffer to exist liens securing indebtedness; (vii) consolidate, merge or transfer all or substantially all of their assets; and (viii) engage in transactions with affiliates. In addition, the Facility contains financial covenants that limit capital expenditures in any fiscal year and that measure (i) the ratio of the Company’s total funded indebtedness net of certain cash to the amount of the Company’s consolidated EBITDA and (ii) the ratio of the amount of the Company’s consolidated EBITDA to the Company’s cash interest expense, as defined in the agreement.
	As of March 31, 2015, we had $40.1 million outstanding under the Facility and were in compliance with all Facility covenants.

Derivative_Instruments

Derivative Instruments	3 Months Ended
	Mar. 31, 2015
Derivative Instruments and Hedges, Assets [Abstract]
Derivative Instruments	Derivative Instruments
	Commodity Price Risk
	In March 2015, we entered into nickel forward derivative contracts to establish a fixed margin and mitigate the risk of price volatility related to certain sales expected in 2015 and 2016 of nickel-containing finished products that were priced on a formula that included a fixed nickel price component. These forward derivative contracts have been designated as cash flow hedges for accounting purposes and had a fair value of $(0.3) million at March 31, 2015.
	In May 2013, we entered into nickel forward derivative contracts to establish a fixed margin and mitigate the risk of price volatility related to certain sales expected in 2013 and 2014 of nickel-containing finished products that were priced on a formula that included a fixed nickel price component. These forward derivative contracts were designated as cash flow hedges for accounting purposes and had a fair value of less than $0.1 million at March 31, 2014.
	There was no hedge ineffectiveness in the three months ended March 31, 2015 or 2014 for these hedges.

Fair_Value_Disclosures

Fair Value Disclosures	3 Months Ended
	Mar. 31, 2015
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Fair Value Disclosures	Fair Value Disclosures
	The following table shows our assets and liabilities accounted for at fair value on a recurring basis:
					Fair Value Measurements at Reporting Date Using
					Quoted Prices in		Significant Other		Significant
					Active Markets for		Observable Inputs		Unobservable Inputs
					Identical Assets
	Description	31-Mar-15			(Level 1)		(Level 2)		(Level 3)
	Liabilities:
	Contingent consideration payable	$	1.3		$	—	$	—	$	1.3
	Commodity contract derivatives	0.3			—		0.3		—
		$	1.6		$	—	$	0.3	$	1.3
	Our valuation techniques and Level 3 inputs used to estimate the fair value of the contingent consideration payable in connection with our acquisition of Rahu Catalytics Limited ("Rahu") are described below. There were no transfers into or out of Levels 1, 2 or 3 in 2014 or 2015.
	The following table summarizes changes in Level 3 liabilities measured at fair value on a recurring basis:
		Contingent Consideration
	Fair Value at December 31, 2014	$	1.4
	Accretion expense	—
	Foreign exchange	(0.1		)
	Fair Value at March 31, 2015	$	1.3
	We acquired Rahu on December 22, 2011. The purchase price included contingent consideration of up to an additional €20.0 million ($21.5 million at March 31, 2015) based on achieving certain volume targets over a fifteen-year period ending on December 31, 2026. We estimated the fair value of the contingent consideration using probability-weighted expected future cash flows and applied a discount rate that appropriately captures a market participant's view of the risk associated with the contingent consideration. Contingent consideration is included in Other non-current liabilities in the Unaudited Condensed Consolidated Balance Sheet. The valuation of the contingent consideration is classified utilizing Level 3 inputs consistent with assumptions which would be made by other market participants. There are many factors that could impact the likelihood that we will pay the contingent consideration and therefore its value, including overall economic conditions and our ability to drive sales volumes as planned. A change in a market participant view of risks could also impact the value of the contingent consideration.
	We also hold financial instruments consisting of cash, accounts receivable, and accounts payable. The carrying amounts of cash, accounts receivable, and accounts payable approximate fair value due to the short-term maturities of these instruments. The Facility had a carrying value of $40.1 million and $12.5 million at March 31, 2015 and December 31, 2014, respectively, and is the approximate fair value due to the the short-term nature of the instrument. Derivative instruments are recorded at fair value and immaterial as of March 31, 2015 and 2014.
	We utilize a “relief from royalty” methodology in estimating fair values for indefinite-lived tradenames. The methodology estimates the fair value of each trade name by determining the present value of the royalty payments that are avoided as a result of owning the tradename and includes judgmental assumptions about sales growth that are consistent with the assumptions used to determine the fair value of reporting units in our goodwill testing. The fair value measurements were calculated using unobservable inputs, classified as Level 3, requiring significant management judgment due to the absence of quoted market prices or observable inputs for assets of a similar nature.

Income_Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes
	We file income tax returns in the U.S. federal jurisdiction, and various state and foreign jurisdictions. Our major tax jurisdictions include the U.S. and Germany. With few exceptions, we are no longer subject to U.S. federal, state and local, or non-U.S. income tax examinations by tax authorities for years before 2006. The Internal Revenue Service completed the examination of our 2010 U.S. federal income tax return, and Finnish tax authorities completed the examination of our Finnish tax returns for the years 2007-2011.  VAC's German tax returns have been audited through 2005. We are indemnified, subject to certain limitations, for any pre-acquisition income tax liabilities of VAC. German tax authorities are currently examining VAC's income tax returns for the years 2006-2011.
	As required under ASC 740, our interim income tax provision is based on the application of an estimated annual effective income tax rate applied to year-to-date ordinary income from continuing operations before income tax expense. In determining the estimated annual effective income tax rate, we analyze various factors, including forecasts of projected annual earnings (including specific subsidiaries projected to have pretax income and pretax losses), taxing jurisdictions in which the earnings will be generated, our ability to use tax credits and net operating loss carryforwards, and available tax planning alternatives. We evaluate the estimated annual effective income tax rate on a quarterly basis based on current and forecasted earnings by tax jurisdiction, including changes in the Company's structure. The estimated annual effective income tax rate may be significantly impacted by changes to the mix of forecasted earnings by tax jurisdiction. The tax effects of adjustments to the estimated annual effective income tax rate are recorded in the period such estimates are revised. The tax effects of discrete items, including the effect of changes in tax laws, tax rates, certain circumstances with respect to valuation allowances or other unusual or non-recurring items, are reflected in the period in which they occur as an addition to, or reduction from, the income tax provision, rather than included in the estimated annual effective income tax rate.
	Income (loss) from continuing operations before income tax expense consists of the following:
		Three Months Ended March 31,
		2015			2014
	United States	$	(8.8	)	$	(2.7	)
	Outside the United States	(6.2		)	9.4
	Income (loss) from continuing operations before income tax expense	$	(15.0	)	$	6.7
	Effective Income Tax Rate	25.9		%	20.7		%
	The effective income tax rates for the three months ended March 31, 2015 and 2014 are lower than the U.S. statutory tax rate primarily due to income earned in tax jurisdictions with lower statutory rates than the U.S. (primarily Germany, Malaysia and Taiwan) and our financing structure, partially offset by losses in certain jurisdictions (including the U.S.) with no corresponding tax benefit.

Defined_Benefit_Plans

Defined Benefit Plans	3 Months Ended
	Mar. 31, 2015
Pension and Other Postretirement Benefit Expense [Abstract]
Defined Benefit Plans	Defined Benefit Plans
	At March 31, 2015 and December 31, 2014, we had pension liabilities of $230.9 million and $253.1 million, respectively, the majority of which were assumed in the 2011 VAC acquisition and the 2010 EaglePicher Technologies acquisition.
	Set forth below is a detail of the net periodic pension expense for the U.S. defined benefit plans:
		Three Months Ended March 31,
		2015			2014
	Service cost	$	0.3		$	0.3
	Interest cost	1.9			2.4
	Amortization of unrecognized net loss	0.4			0.4
	Expected return on plan assets	(2.3		)	(2.8		)
	Total expense	$	0.3		$	0.3
	Set forth below is a detail of the net periodic pension expense for the VAC defined benefit plans:
		Three Months Ended March 31,
		2015			2014
	Service cost	$	1.5		$	1.7
	Interest cost	0.8			1.5
	Amortization of unrecognized net loss	0.6			0.3
	Total expense	$	2.9		$	3.5

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Loss	3 Months Ended
	Mar. 31, 2015
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Income Loss	Accumulated Other Comprehensive Loss
	(a) Changes in Accumulated Comprehensive Loss by Component
		Foreign				Unrealized			Pension and		Accumulated
		Currency				Loss on Cash			Post-Retirement		Other Comprehensive Loss
		Translation				Flow Hedging			Obligation, net of tax
						Derivatives, net of tax
	Beginning Balance at January 1, 2015	$	(87.2	)		—			(70.6	)	(157.8		)
	Other comprehensive income (loss) before reclassifications	(44.5		)		(0.2		)	—		(44.7		)
	Amounts reclassified from accumulated other comprehensive loss	(3.5		)		—			0.8		(2.7		)
	Net current-period other comprehensive income (loss)	(48.0		)		(0.2		)	0.8		(47.4		)
	Ending balance at March 31, 2015	$	(135.2	)		$	(0.2	)	(69.8	)	$	(205.2	)
	(b) Reclassifications out of Accumulated Other Comprehensive Loss
	Details about Accumulated Other Comprehensive Loss Components	Amount Reclassified from Accumulated Other Comprehensive Loss			Affected Line Item in the Statement Where Net Income is Presented
	Foreign currency translation	(3.5	)		Other income (expense), net
	Pension and post-retirement obligation	0.8			Selling, general and administrative expenses

Earnings_Loss_Per_Share

Earnings (Loss) Per Share	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Earnings (Loss) Per Share	Earnings (Loss) Per Share
	The following table sets forth the computation of basic and dilutive income (loss) per common share from continuing operations attributable to OM Group, Inc. common stockholders:
		Three Months Ended March 31,
		2015			2014
	Amounts attributable to OM Group, Inc. common stockholders:
	Income (loss) from continuing operations, net of tax	$	(11.1	)	$	5.3
	Earnings (loss) per common share - basic:
	Income (loss) from continuing operations	$	(0.37	)	$	0.17
	Earnings (loss) per common share - assuming dilution:
	Income (loss) from continuing operations	$	(0.37	)	$	0.16
	Weighted average shares outstanding — basic	30.3			31.5
	Dilutive effect of stock options and restricted stock	—			0.4
	Weighted average shares outstanding — assuming dilution	30.3			31.9
	The following table sets forth the computation of basic and diluted net income (loss) per common share attributable to OM Group, Inc. common stockholders:
		Three Months Ended March 31,
		2015			2014
	Amounts attributable to OM Group, Inc. common stockholders:
	Net income (loss)	$	(11.0	)	$	5.2
	Earnings (loss) per common share - basic:
	Net income (loss)	$	(0.36	)	$	0.17
	Earnings per common share - assuming dilution:
	Net income (loss)	$	(0.36	)	$	0.16
	Weighted average shares outstanding — basic	30.3			31.5
	Dilutive effect of stock options and restricted stock	—			0.4
	Weighted average shares outstanding — assuming dilution	30.3			31.9
	We use the treasury stock method to calculate the effect of outstanding share-based compensation awards, which requires us to compute total employee proceeds as the sum of (a) the amount the employee must pay upon exercise of the award, (b) the amount of unearned share-based compensation costs attributed to future services and (c) the amount of tax benefits, if any, that would be credited to additional paid-in capital assuming exercise of the award. Shares, under share-based compensation awards, for which the total employee proceeds exceed the average market price over the applicable period have an anti-dilutive effect on earnings per share, and accordingly, are excluded from the calculation of diluted earnings per share.
	In the three months ended March 31, 2015 and 2014, stock options to purchase 0.2 million and 0.1 million shares, respectively, were excluded from the calculation of dilutive earnings per share because the options’ exercise prices were greater than the average market price of the common shares and, therefore, the effect would have been anti-dilutive.

ShareBased_Compensation

Share-Based Compensation	3 Months Ended
	Mar. 31, 2015
Share-based Compensation [Abstract]
Share-Based Compensation	Share-Based Compensation
	Set forth below is a summary of share-based compensation expense for option grants, restricted stock awards and restricted stock unit awards included as a component of Selling, general and administrative expenses in the Unaudited Condensed Consolidated Statements of Operations:
		Three Months Ended March 31,
		2015		2014
	Stock options and restricted stock awards	$	2.9	$	2.3
	Restricted stock unit awards	0.2		0.2
	Share-based compensation expense - employees	$	3.1	$	2.5
	Share-based compensation expense - non-employee directors	$	0.1	$	0.1
	No tax benefit for share-based compensation was realized during the first quarter of 2015 or 2014 as a result of a valuation allowance against the deferred tax assets.
	At March 31, 2015, there was $12.9 million of unrecognized compensation expense related to unvested share-based awards. That cost is expected to be recognized as follows: $6.0 million in the last nine months of 2015, $4.3 million in 2016, and $2.6 million in 2017 as a component of Selling, general and administrative expenses. Unearned compensation expense is recognized over the vesting period for the particular grant. Total unrecognized compensation cost will be adjusted for future changes in actual and estimated forfeitures, updated vesting assumptions for performance awards, and fluctuations in the fair value of restricted stock unit awards.
	Non-employee directors of the Company are paid a portion of their annual retainer in unrestricted shares of common stock. For purposes of determining the number of shares of common stock to be issued subsequent to May 13, 2014, the 2014 Plan provides that shares are to be valued at the closing sale price of the Company’s common stock on the New York Stock Exchange ("NYSE") on the last trading date of the quarter. Pursuant to the 2014 Plan, we issued 4,403 shares in the three months ended March 31, 2015. For purposes of determining the number of shares of common stock to be issued prior to May 13, 2014, the 2007 Plan provides that shares are to be valued at the average of the high and low sale price of the Company’s common stock on the NYSE on the last trading date of the quarter. Pursuant to the 2007 Plan, we issued 3,976 shares in the three months ended March 31, 2014 to non-employee directors.

Commitments_and_Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies
	We have potential contingent liabilities with respect to environmental matters related to our former operations in Brazil which were sold in 2003. Environmental cost-sharing arrangements are in place between the original owner and operator of these operations and between the Company and the subsequent purchaser of these operations. We have reviewed the limited information made available to us on the environmental conditions and are awaiting more detailed information from the purchaser. We cannot currently evaluate whether or not, or to what extent, we will be responsible for any remediation costs until more detailed information is received and validated.
	From time to time, we are subject to various legal and regulatory proceedings, claims and assessments that arise in the normal course of business. The ultimate resolution of such proceedings, claims and assessments is inherently unpredictable and, as a result, our estimates of liability, if any, are subject to change and actual results may materially differ from such estimates. Our estimate of any costs to be incurred as a result of these proceedings, claims and assessments are accrued when the liability is considered probable and the amount can be reasonably estimated. We believe the amount of any current potential liability with respect to legal and regulatory proceedings, claims and assessments will not have a material adverse effect upon our financial condition, results of operations, or cash flows.

Reportable_Segments

Reportable Segments	3 Months Ended
	Mar. 31, 2015
Segment Reporting Information, Profit (Loss) [Abstract]
Reportable Segments	Reportable Segments
	We determine our segments based on how the chief operating decision maker makes decisions about allocating resources to segments and measuring their performance. We operate and report our results in four operating segments: Magnetic Technologies, Battery Technologies, Specialty Chemicals and Advanced Materials. Intersegment transactions are immaterial and generally recognized based on current market prices and are eliminated in consolidation. Corporate is comprised of general and administrative expenses not allocated to the operating segments.
	The following table reflects the results of our reportable segments:
			Three Months Ended March 31,
			2015			2014
	Net sales
	Magnetic Technologies		$	104.3		$	129.2
	Battery Technologies		39.7			40.5
	Specialty Chemicals		75.1			76.9
	Advanced Materials		28.7			15.1
			$	247.8		$	261.7
	Operating profit (loss)
	Magnetic Technologies (a)		$	(0.6	)	$	5.7
	Battery Technologies (b) (c)		3			6.3
	Specialty Chemicals (a)		6.3			7.4
	Advanced Materials		(0.8		)	(1.0		)
	Corporate (a)		(12.4		)	(9.9		)
			$	(4.5	)	$	8.5
	Interest expense		$	(0.6	)	$	(0.7	)
	Foreign exchange loss		(4.4		)	(0.3		)
	Gain (loss) on divestiture of Advanced Materials business		2			(0.2		)
	Charges associated with VAC arbitration conclusion		(10.4		)	—
	Other income (expense), net		2.9			(0.6		)
	Income (loss) from continuing operations before income taxes		$	(15.0	)	$	6.7
	Expenditures for property, plant & equipment
	Magnetic Technologies		$	3.6		$	1.7
	Battery Technologies		0.6			0.9
	Specialty Chemicals		0.4			0.5
	Corporate		—			0.1
			$	4.6		$	3.2
	Depreciation and amortization
	Magnetic Technologies		$	8.6		$	11.8
	Battery Technologies		3			2.6
	Specialty Chemicals		3.2			3.6
	Corporate		0.1			0.1
			$	14.9		$	18.1
	(a)	The first quarter of 2015 included costs related to enterprise initiatives, including fees related to a potential proxy contest and competitive repositioning and cost optimization opportunities announced on February 18, 2015 of $0.6 million in Magnetic Technologies, $0.9 million in Specialty Chemicals, and $2.0 million in Corporate. Certain of these opportunities are subject to ongoing negotiations with employee works councils and unions.
	(b)	The first quarter of 2015 includes costs related to inventory purchase accounting step-up charges of $1.0 million related to the Yardney acquisition in Battery Technologies.
	(c)	In the fourth quarter of 2014, Battery Technologies entered into a research and development ("R&D") contract with the U.S. Government. The contract is a “best efforts” cost-sharing agreement and calls for Battery Technologies to develop a production line for lithium-ion batteries from October 2014 through June 2017. The total expected costs to build the production line are approximately $29.0 million, a significant majority of which is expected to be reimbursed by the U.S. Government under the terms of the contract. During the first quarter of 2015, Battery Technologies incurred $1.4 million of expenses and requested reimbursement for $1.3 million of these expenses, which are recorded net within Selling, general and administrative expenses.

Basis_of_Presentation_Policies

Basis of Presentation (Policies)	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Principles of Consolidation	Principles of Consolidation — OM Group, Inc. (the “Company”, “we”, “our”, “us”) is a technology-driven industrial company serving attractive global markets, including automotive systems, electronic devices, aerospace and defense, industrial and medical. We use innovative technologies to address customers' complex applications and demanding requirements. Our strategy is to grow organically through product and application innovation and new market and customer development, to grow strategically through complementary acquisitions to build-out our growth platforms, and to maximize total stockholder returns through a combination of business growth, financial discipline, optimal deployment of capital and continued operational excellence. Our objective is to deliver sustainable, profitable growth and create long-term stockholder value. The consolidated financial statements include the accounts of OM Group and its consolidated subsidiaries. We were formed in 1991 as a Delaware corporation. Intercompany accounts and transactions have been eliminated in consolidation.
Accounting Guidance adopted in 2014	Accounting Guidance adopted in 2014
	In May 2014, the FASB issued ASU No. 2014-09, “Revenue from Contracts with Customers (Topic 606)” (“ASU 2014-09”). The update amends the guidance for revenue recognition to replace numerous, industry-specific requirements and converges areas under this topic with those of the International Financial Reporting Standards. The amendments are effective for reporting periods beginning after December 15, 2016, and early adoption is prohibited. Entities can transition to the standard either retrospectively or as a cumulative-effect adjustment as of the date of adoption. We are currently assessing the impact the adoption of ASU 2014-09 may have on our results of operations or financial position.
	In April 2015, the FASB issued ASU No. 2015-03, “Interest - Imputation of Interest” (“ASU 2015-03”). The update amends the guidance for presenting deferred debt costs on the balance sheet and requires that the costs are recorded as a deduction from the carrying amount of debt. The amendments are effective for reporting periods beginning after December 15, 2015, and early adoption is permitted. We are currently assessing the impact the adoption of ASU 2015-03 and believe the impact will not be material to our financial position.

Inventories_Tables

Inventories (Tables)	3 Months Ended
	Mar. 31, 2015
Inventory, Net [Abstract]
Inventories	Inventories consist of the following:
		March 31,		December 31,
		2015		2014
	Raw materials and supplies	$	66.7	$	73.6
	Work-in-process	112.5		118.1
	Finished goods	35		36.7
		$	214.2	$	228.4

Fair_Value_Disclosures_Tables

Fair Value Disclosures (Tables)	3 Months Ended
	Mar. 31, 2015
Fair Value, Assets, Liabilities and Stockholders' Equity Measured on Recurring Basis [Abstract]
Assets And Liabilities Accounted For At Fair Value On A Recurring Basis	The following table shows our assets and liabilities accounted for at fair value on a recurring basis:
					Fair Value Measurements at Reporting Date Using
					Quoted Prices in		Significant Other		Significant
					Active Markets for		Observable Inputs		Unobservable Inputs
					Identical Assets
	Description	31-Mar-15			(Level 1)		(Level 2)		(Level 3)
	Liabilities:
	Contingent consideration payable	$	1.3		$	—	$	—	$	1.3
	Commodity contract derivatives	0.3			—		0.3		—
		$	1.6		$	—	$	0.3	$	1.3
Changes In Level 3 Liabilities Measured at Fair Value on a Recurring Basis	The following table summarizes changes in Level 3 liabilities measured at fair value on a recurring basis:
		Contingent Consideration
	Fair Value at December 31, 2014	$	1.4
	Accretion expense	—
	Foreign exchange	(0.1		)
	Fair Value at March 31, 2015	$	1.3

Income_Taxes_Tables

Income Taxes (Tables)	3 Months Ended
	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Income (Loss) From Continuing Operations Before Income Tax Expense	Income (loss) from continuing operations before income tax expense consists of the following:
		Three Months Ended March 31,
		2015			2014
	United States	$	(8.8	)	$	(2.7	)
	Outside the United States	(6.2		)	9.4
	Income (loss) from continuing operations before income tax expense	$	(15.0	)	$	6.7
	Effective Income Tax Rate	25.9		%	20.7		%

Defined_Benefit_Plans_Tables

Defined Benefit Plans (Tables)	3 Months Ended
	Mar. 31, 2015
U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Schedule of Net Benefit Costs and Amounts Recognized in Other Comprehensive Income (Loss)	Set forth below is a detail of the net periodic pension expense for the U.S. defined benefit plans:
		Three Months Ended March 31,
		2015			2014
	Service cost	$	0.3		$	0.3
	Interest cost	1.9			2.4
	Amortization of unrecognized net loss	0.4			0.4
	Expected return on plan assets	(2.3		)	(2.8		)
	Total expense	$	0.3		$	0.3
Non-U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Schedule of Net Benefit Costs and Amounts Recognized in Other Comprehensive Income (Loss)	Set forth below is a detail of the net periodic pension expense for the VAC defined benefit plans:
		Three Months Ended March 31,
		2015			2014
	Service cost	$	1.5		$	1.7
	Interest cost	0.8			1.5
	Amortization of unrecognized net loss	0.6			0.3
	Total expense	$	2.9		$	3.5

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive Loss (Tables)	3 Months Ended
	Mar. 31, 2015
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	Changes in Accumulated Comprehensive Loss by Component
		Foreign				Unrealized			Pension and		Accumulated
		Currency				Loss on Cash			Post-Retirement		Other Comprehensive Loss
		Translation				Flow Hedging			Obligation, net of tax
						Derivatives, net of tax
	Beginning Balance at January 1, 2015	$	(87.2	)		—			(70.6	)	(157.8		)
	Other comprehensive income (loss) before reclassifications	(44.5		)		(0.2		)	—		(44.7		)
	Amounts reclassified from accumulated other comprehensive loss	(3.5		)		—			0.8		(2.7		)
	Net current-period other comprehensive income (loss)	(48.0		)		(0.2		)	0.8		(47.4		)
	Ending balance at March 31, 2015	$	(135.2	)		$	(0.2	)	(69.8	)	$	(205.2	)
Reclassifications Out of Accumulated Other Comprehensive Income (Loss)	Reclassifications out of Accumulated Other Comprehensive Loss
	Details about Accumulated Other Comprehensive Loss Components	Amount Reclassified from Accumulated Other Comprehensive Loss			Affected Line Item in the Statement Where Net Income is Presented
	Foreign currency translation	(3.5	)		Other income (expense), net
	Pension and post-retirement obligation	0.8			Selling, general and administrative expenses

Earnings_Loss_Per_Share_Tables

Earnings (Loss) Per Share (Tables)	3 Months Ended
	Mar. 31, 2015
Earnings Per Share [Abstract]
Computation Of Basic And Diluted Income (Loss) Per Common Share From Continuing Operations	The following table sets forth the computation of basic and dilutive income (loss) per common share from continuing operations attributable to OM Group, Inc. common stockholders:
		Three Months Ended March 31,
		2015			2014
	Amounts attributable to OM Group, Inc. common stockholders:
	Income (loss) from continuing operations, net of tax	$	(11.1	)	$	5.3
	Earnings (loss) per common share - basic:
	Income (loss) from continuing operations	$	(0.37	)	$	0.17
	Earnings (loss) per common share - assuming dilution:
	Income (loss) from continuing operations	$	(0.37	)	$	0.16
	Weighted average shares outstanding — basic	30.3			31.5
	Dilutive effect of stock options and restricted stock	—			0.4
	Weighted average shares outstanding — assuming dilution	30.3			31.9
Computation Of Basic And Diluted Net Income (Loss) Per Common Share	The following table sets forth the computation of basic and diluted net income (loss) per common share attributable to OM Group, Inc. common stockholders:
		Three Months Ended March 31,
		2015			2014
	Amounts attributable to OM Group, Inc. common stockholders:
	Net income (loss)	$	(11.0	)	$	5.2
	Earnings (loss) per common share - basic:
	Net income (loss)	$	(0.36	)	$	0.17
	Earnings per common share - assuming dilution:
	Net income (loss)	$	(0.36	)	$	0.16
	Weighted average shares outstanding — basic	30.3			31.5
	Dilutive effect of stock options and restricted stock	—			0.4
	Weighted average shares outstanding — assuming dilution	30.3			31.9

ShareBased_Compensation_Tables

Share-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2015
Share-based Compensation [Abstract]
Share-Based Compensation Expense For Option Grants, Restricted Stock Awards And Restricted Stock Unit Awards	Set forth below is a summary of share-based compensation expense for option grants, restricted stock awards and restricted stock unit awards included as a component of Selling, general and administrative expenses in the Unaudited Condensed Consolidated Statements of Operations:
		Three Months Ended March 31,
		2015		2014
	Stock options and restricted stock awards	$	2.9	$	2.3
	Restricted stock unit awards	0.2		0.2
	Share-based compensation expense - employees	$	3.1	$	2.5
	Share-based compensation expense - non-employee directors	$	0.1	$	0.1

Reportable_Segments_Tables

Reportable Segments (Tables)	3 Months Ended
	Mar. 31, 2015
Segment Reporting Information, Profit (Loss) [Abstract]
Results of Reportable Segments	The following table reflects the results of our reportable segments:
		Three Months Ended March 31,
		2015			2014
	Net sales
	Magnetic Technologies	$	104.3		$	129.2
	Battery Technologies	39.7			40.5
	Specialty Chemicals	75.1			76.9
	Advanced Materials	28.7			15.1
		$	247.8		$	261.7
	Operating profit (loss)
	Magnetic Technologies (a)	$	(0.6	)	$	5.7
	Battery Technologies (b) (c)	3			6.3
	Specialty Chemicals (a)	6.3			7.4
	Advanced Materials	(0.8		)	(1.0		)
	Corporate (a)	(12.4		)	(9.9		)
		$	(4.5	)	$	8.5
	Interest expense	$	(0.6	)	$	(0.7	)
	Foreign exchange loss	(4.4		)	(0.3		)
	Gain (loss) on divestiture of Advanced Materials business	2			(0.2		)
	Charges associated with VAC arbitration conclusion	(10.4		)	—
	Other income (expense), net	2.9			(0.6		)
	Income (loss) from continuing operations before income taxes	$	(15.0	)	$	6.7
	Expenditures for property, plant & equipment
	Magnetic Technologies	$	3.6		$	1.7
	Battery Technologies	0.6			0.9
	Specialty Chemicals	0.4			0.5
	Corporate	—			0.1
		$	4.6		$	3.2
	Depreciation and amortization
	Magnetic Technologies	$	8.6		$	11.8
	Battery Technologies	3			2.6
	Specialty Chemicals	3.2			3.6
	Corporate	0.1			0.1
		$	14.9		$	18.1

Basis_of_Presentation_Narrativ

Basis of Presentation (Narrative) (Details) (Battery Technologies [Member], USD $)	0 Months Ended	3 Months Ended
In Millions, unless otherwise specified	Nov. 24, 2014	Mar. 31, 2015
Battery Technologies [Member]
Related Party Transaction [Line Items]
Purchase price total cash consideration	$24.60	$23.10

Inventories_Details

Inventories (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
Inventory, Net [Abstract]
Raw materials and supplies	$66.70	$73.60
Work-in-process	112.5	118.1
Finished goods	35	36.7
Inventories, total	$214.20	$228.40

Acquisitions_and_Divestitures_

Acquisitions and Divestitures (Narrative) (Details) (USD $)	3 Months Ended		0 Months Ended			1 Months Ended			0 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 29, 2013	Aug. 02, 2011	Aug. 02, 2011	Mar. 31, 2015	Dec. 31, 2014	Aug. 31, 2013	Nov. 24, 2014
			contract
Business Acquisition [Line Items]
Payments for purchase price payable to seller	$41,800,000	$0
Reduction of purchase price payable to seller	1,500,000	0
Advanced Materials [Member]
Business Acquisition [Line Items]
Potential earn-out income			110,000,000
Potential earn-out payment period			3 years
Number of agreements			2
VAC [Member]
Business Acquisition [Line Items]
Purchase price total cash consideration				812,200,000
Cash consideration paid for business acquisition				686,200,000		52,500,000
Purchase price of VAC Holding payable to seller	4,100,000			86,300,000	86,300,000	4,100,000
Shares issued in connection with acquisition of VAC Holding				39,700,000	39,700,000
Period from closing date of acquisition relating to the withheld consideration					2 years
Payments for purchase price payable to seller						41,800,000	16,200,000	23,000,000
Reduction of purchase price payable to seller							1,600,000
Payments for interest and legal costs related to payable to seller						10,700,000
Battery Technologies [Member]
Business Acquisition [Line Items]
Purchase price total cash consideration	23,100,000								24,600,000
Purchase price reduction	1,500,000
Allocation of net assets	12,700,000					12,700,000
Identifiable intangible assets	6,500,000
Goodwill acquired	$10,400,000

Debt_Details

Debt (Details) (USD $)	0 Months Ended
	Sep. 04, 2013	Mar. 31, 2015
Line of Credit Facility [Line Items]
Line of credit facility amount outstanding		$40,100,000
Senior Secured Revolving Credit New Facility [Member]
Line of Credit Facility [Line Items]
Debt instrument term	5 years
Undrawn revolving credit facility	350,000,000
Line of credit facility borrowing capacity increase limit	$150,000,000
Percentage pledged by voting capital stock of certain foreign subsidiaries	65.00%
Percentage pledged by voting capital stock subject to certain exceptions	100.00%
Senior Secured Revolving Credit New Facility [Member] | Federal Funds Rate [Member] | Adjusted Base Rate Advances [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate	0.50%
Senior Secured Revolving Credit New Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member] | Variable Spread [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.13%
Senior Secured Revolving Credit New Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member] | Variable Spread [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate	2.00%
Senior Secured Revolving Credit New Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Adjusted Base Rate Advances [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.00%
Senior Secured Revolving Credit New Facility [Member] | Applicable Margin [Member] | Adjusted Base Rate Advances [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate	0.13%
Senior Secured Revolving Credit New Facility [Member] | Applicable Margin [Member] | Adjusted Base Rate Advances [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.00%

Derivative_Instruments_Narrati

Derivative Instruments (Narrative) (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Derivative Instruments and Hedges, Assets [Abstract]
Derivative, Fair Value, Net	($300,000)	$100,000
Hedge ineffectiveness recorded to income	$0	$0

Fair_Value_Disclosures_Details

Fair Value Disclosures (Details)

3 Months Ended

12 Months Ended

3 Months Ended

Mar. 31, 2015

Dec. 31, 2014

Mar. 31, 2015

Mar. 31, 2015

Mar. 31, 2015

Mar. 31, 2015

Mar. 31, 2015

Mar. 31, 2015

Mar. 31, 2015

Mar. 31, 2015

Mar. 31, 2015

Mar. 31, 2015

Mar. 31, 2015

Mar. 31, 2015

Mar. 31, 2015

Mar. 31, 2015

Mar. 31, 2015

USD ($)

USD ($)

Rahu Catalytics Limited [Member]

Volume Targets [Member]

Volume Targets [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Fair Value, Measurements, Recurring [Member]

Rahu Catalytics Limited [Member]

Rahu Catalytics Limited [Member]

USD ($)

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

Significant Other Observable Inputs (Level 2) [Member]

Significant Unobservable Inputs (Level 3) [Member]

Contingent Consideration [Member]

Contingent Consideration [Member]

Contingent Consideration [Member]

Contingent Consideration [Member]

Commodity Contract [Member]

Commodity Contract [Member]

Commodity Contract [Member]

Commodity Contract [Member]

USD ($)

EUR (€)

USD ($)

USD ($)

USD ($)

USD ($)

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

Significant Other Observable Inputs (Level 2) [Member]

Significant Unobservable Inputs (Level 3) [Member]

USD ($)

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

Significant Other Observable Inputs (Level 2) [Member]

Significant Unobservable Inputs (Level 3) [Member]

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Fair Value, Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items]

Contingent consideration payable

$1,600,000

$0

$300,000

$1,300,000

$1,300,000

$0

$0

$1,300,000

Commodity contract derivatives

300,000

0

300,000

0

Transfer into or out of fair value measurement levels 1 and 2

0

0

Transfer into or out of fair value measurement level 3

0

0

Contingent consideration amounts based on certain volume targets

21,500,000

20,000,000

Contingent consideration based on achieving target volumes

15 years

Long-term debt

$40,100,000

$12,500,000

Fair_Value_Disclosures_Changes

Fair Value Disclosures (Changes in Level 3 liabilities measured at fair value on a recurring basis) (Details) (Significant Unobservable Inputs (Level 3) [Member], USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value at December 31, 2014	$1.40
Accretion expense	0
Foreign exchange	-0.1
Fair Value at March 31, 2015	$1.30

Income_Taxes_Income_Loss_From_

Income Taxes (Income (Loss) From Continuing Operations Before Income Tax Expense) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Income (loss) from continuing operations before income tax expense:
United States	($8.80)	($2.70)
Outside the United States	-6.2	9.4
Income (loss) from continuing operations before income tax expense	($15)	$6.70
Effective Income Tax Rate	25.90%	20.70%

Defined_Benefit_Plans_Narrativ

Defined Benefit Plans (Narrative) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
Defined Benefit Plan Disclosure [Line Items]
Pension liabilities	$223.30	$244.40
VAC [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension liabilities	$230.90	$253.10

Defined_Benefit_Plans_Schedule

Defined Benefit Plans (Schedule of Net Benefit Costs and Amounts Recognized in Other Comprehensive Income (Loss)) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$0.30	$0.30
Interest cost	1.9	2.4
Amortization of unrecognized net loss	0.4	0.4
Expected return on plan assets	-2.3	-2.8
Total expense	0.3	0.3
Non-U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	1.5	1.7
Interest cost	0.8	1.5
Amortization of unrecognized net loss	0.6	0.3
Total expense	$2.90	$3.50

Accumulated_Other_Comprehensiv2

Accumulated Other Comprehensive Loss (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance at January 1, 2015	($157.80)
Other comprehensive income (loss) before reclassifications	-44.7
Amounts reclassified from accumulated other comprehensive loss	-2.7
Net change in accumulated other comprehensive loss	-47.4	-1.7
Ending balance at March 31, 2015	-205.2
Foreign exchange loss	-4.4	-0.3
Foreign Currency Translation [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance at January 1, 2015	-87.2
Other comprehensive income (loss) before reclassifications	-44.5
Amounts reclassified from accumulated other comprehensive loss	-3.5
Net change in accumulated other comprehensive loss	-48
Ending balance at March 31, 2015	-135.2
Foreign Currency Translation [Member] | Amount of Reclassified from Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Foreign exchange loss	-3.5
Unrealized Loss on Cash Flow Hedging Derivatives, net of tax [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance at January 1, 2015	0
Other comprehensive income (loss) before reclassifications	-0.2
Amounts reclassified from accumulated other comprehensive loss	0
Net change in accumulated other comprehensive loss	-0.2
Ending balance at March 31, 2015	-0.2
Pension and Post-Retirement Obligation, net of tax [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance at January 1, 2015	-70.6
Other comprehensive income (loss) before reclassifications	0
Amounts reclassified from accumulated other comprehensive loss	0.8
Net change in accumulated other comprehensive loss	0.8
Ending balance at March 31, 2015	($69.80)

Earnings_Loss_Per_Share_Comput

Earnings (Loss) Per Share (Computation Of Basic And Diluted Income Per Common Share From Continuing Operations) (Details) (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Earnings Per Share [Abstract]
Income (loss) from continuing operations, net of tax	($11.10)	$5.30
Earnings (loss) per common share:
Income (loss) from continuing operations (in dollars per share)	($0.37)	$0.17
Income (loss) from continuing operations (in dollars per share)	($0.37)	$0.16
Weighted average shares outstanding - basic (in shares)	30.3	31.5
Dilutive effect of stock options and restricted stock (in shares)	0	0.4
Weighted average shares outstanding - assuming dilution (in shares)	30.3	31.9

Earnings_Loss_Per_Share_Comput1

Earnings (Loss) Per Share (Computation Of Basic And Diluted Net Income Per Common Share) (Details) (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Earnings Per Share [Abstract]
Net income (loss)	($11)	$5.20
Earnings (loss) per common share:
Net income (loss) (in dollars per share)	($0.36)	$0.17
Net income (loss) (in dollars per share)	($0.36)	$0.16
Weighted average shares outstanding - basic (in shares)	30.3	31.5
Dilutive effect of stock options and restricted stock (in shares)	0	0.4
Weighted average shares outstanding - assuming dilution (in shares)	30.3	31.9

Earnings_Loss_Per_Share_NonVes

Earnings (Loss) Per Share (Non-Vested Share-Based Compensation Awards That Could Potentially Dilute Earnings Per Share) (Details)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Earnings Per Share [Abstract]
Non-vested share-based compensation awards not included in the fully diluted computation (in shares)	0.2	0.1

ShareBased_Compensation_Compen

Share-Based Compensation (Compensation Expense For Option Grants, Restricted Stock Awards And Restricted Stock Unit Awards) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$3.10	$2.50
Stock Options and Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	2.9	2.3
Restricted Stock Unit Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	0.2	0.2
Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$0.10	$0.10

ShareBased_Compensation_Narrat

Share-Based Compensation (Narrative) (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Tax benefit for share-based compensation	$0	$0
Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Quantity of securities issued	4,403	3,976

ShareBased_Compensation_Compen1

Share-Based Compensation (Compensation Expense For Nonvested Share-Based Awards Expected To Be Recognized) (Details) (USD $)	Mar. 31, 2015
In Millions, unless otherwise specified
Share-based Compensation [Abstract]
Unrecognized compensation expense	$12.90
Unrecognized compensation expense to be recognized in 2015	6
Unrecognized compensation expense to be recognized in 2016	4.3
Unrecognized compensation expense to be recognized in 2017	$2.60

Reportable_Segments_Results_of

Reportable Segments (Results of Reportable Segments) (Details) (USD $)	3 Months Ended				33 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015		Mar. 31, 2014		Jun. 30, 2017
	segment
Segment Reporting Information [Line Items]
Number of operating segments	4
Net sales
Net sales	$247.80		$261.70
Operating profit (loss)
Operating profit (loss)	-4.5		8.5
Interest expense	-0.6		-0.7
Foreign exchange loss	-4.4		-0.3
Gain (loss) on divestiture of Advanced Materials business	2		-0.2
Charges associated with VAC arbitration conclusion	-10.4		0
Other income (expense), net	2.9		-0.6
Income (loss) from continuing operations before income tax expense	-15		6.7
Expenditures for property, plant & equipment
Expenditures for property, plant and equipment	4.6		3.2
Depreciation and amortization
Depreciation and amortization	14.9		18.1
Magnetic Technologies [Member]
Net sales
Net sales	104.3		129.2
Operating profit (loss)
Operating profit (loss)	-0.6	[1]	5.7	[1]
Expenditures for property, plant & equipment
Expenditures for property, plant and equipment	3.6		1.7
Depreciation and amortization
Depreciation and amortization	8.6		11.8
Cost reductions initiatives	0.6
Battery Technologies [Member]
Net sales
Net sales	39.7		40.5
Operating profit (loss)
Operating profit (loss)	3	[2],[3]	6.3	[2],[3]
Expenditures for property, plant & equipment
Expenditures for property, plant and equipment	0.6		0.9
Depreciation and amortization
Depreciation and amortization	3		2.6
Amount of inventory step-up amortization	1
research and development arrangement with federal government costs incurred, gross	1.4
Research and development arrangement with federal government, customer funding to offset costs incurred	1.3
Battery Technologies [Member] | Scenario, Forecast [Member]
Depreciation and amortization
research and development arrangement with federal government costs incurred, gross					29
Specialty Chemicals [Member]
Net sales
Net sales	75.1		76.9
Operating profit (loss)
Operating profit (loss)	6.3	[1]	7.4	[1]
Expenditures for property, plant & equipment
Expenditures for property, plant and equipment	0.4		0.5
Depreciation and amortization
Depreciation and amortization	3.2		3.6
Cost reductions initiatives	0.9
Advanced Materials [Member]
Net sales
Net sales	28.7		15.1
Operating profit (loss)
Operating profit (loss)	-0.8		-1
Corporate [Member]
Operating profit (loss)
Operating profit (loss)	-12.4	[1]	-9.9	[1]
Expenditures for property, plant & equipment
Expenditures for property, plant and equipment	0		0.1
Depreciation and amortization
Depreciation and amortization	0.1		0.1
Cost reductions initiatives	$2
[1]	enterprise initiatives, including fees related to a potential proxy contest and competitive repositioning and cost optimization opportunities announced on February 18, 2015 of $0.6 million in Magnetic Technologies, $0.9 million in Specialty Chemicals, and $2.0 million in Corporate.
[2]	The first quarter of 2015 includes costs related to inventory purchase accounting step-up charges of $1.0 million related to the Yardney acquisition in Battery Technologies.
[3]	In the fourth quarter of 2014, Battery Technologies entered into a research and development ("R&D") contract with the U.S. Government. The contract is a “best efforts” cost-sharing agreement and calls for Battery Technologies to develop a production line for lithium-ion batteries from October 2014 through June 2017. The total expected costs to build the production line are approximately $29.0 million, a significant majority of which is expected to be reimbursed by the U.S. Government under the terms of the contract. During the first quarter of 2015, Battery Technologies incurred $1.4 million of expenses and requested reimbursement for $1.3 million of these expenses, which are recorded net within Selling, general and administrative expenses.