Materion (MTRN) 10-K 14 Mar 14 2013 FY Annual report Financial data

Document_and_Entity_Informatio

Document and Entity Information (USD $)	12 Months Ended
	Dec. 31, 2013	Feb. 21, 2014	Jun. 28, 2013
Document and Entity Information [Abstract]	'	'	'
Entity Registrant Name	'MATERION Corp	'	'
Entity Central Index Key	'0001104657	'	'
Current Fiscal Year End Date	'--12-31	'	'
Entity Filer Category	'Accelerated Filer	'	'
Document Type	'10-K	'	'
Document Period End Date	31-Dec-13	'	'
Document Fiscal Year Focus	'2013	'	'
Document Fiscal Period Focus	'FY	'	'
Amendment Flag	'false	'	'
Entity Common Stock, Shares Outstanding	'	20,595,691	'
Entity Well-known Seasoned Issuer	'No	'	'
Entity Voluntary Filers	'No	'	'
Entity Current Reporting Status	'Yes	'	'
Entity Public Float	'	'	$557,659,759

Consolidated_Statements_of_Inc

Consolidated Statements of Income (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Statement [Abstract]	'	'	'
Net sales	$1,166,882	$1,273,078	$1,526,730
Cost of sales	978,904	1,074,295	1,311,409
Gross margin	187,978	198,783	215,321
Selling, general and administrative expense	133,253	133,893	131,388
Research and development expense	13,432	12,505	11,081
Other — net	14,462	15,609	15,774
Operating profit	26,831	36,776	57,078
Interest expense — net	3,036	3,134	2,812
Income before income taxes	23,795	33,642	54,266
Income tax expense	4,088	8,978	14,287
Net income	$19,707	$24,664	$39,979
Basic earnings per share:	'	'	'
Net income per share of common stock (in dollars per share)	$0.96	$1.21	$1.96
Diluted earnings per share:	'	'	'
Net income per share of common stock (in dollars per share)	$0.94	$1.19	$1.93
Cash dividends per share (in dollars per share)	$0.32	$0.23	$0
Weighted-average number of shares of common stock outstanding	'	'	'
Basic (in shares)	20,571	20,418	20,365
Diluted (in shares)	20,895	20,679	20,754

Consolidated_Statements_of_Com

Consolidated Statements of Comprehensive Income (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Statement of Comprehensive Income [Abstract]	'	'	'
Net income	$19,707	$24,664	$39,979
Other comprehensive income:	'	'	'
Foreign currency translation adjustment	-3,790	-870	958
Derivative and hedging activity, net of tax benefit (expense) of $160, $385, and ($1,047)	-296	-715	1,946
Pension and post employment benefit adjustment, net of tax of ($17,613), $7,676, and $12,292	32,627	-14,629	-23,503
Net change in accumulated other comprehensive income	28,541	-16,214	-20,599
Comprehensive income	$48,248	$8,450	$19,380

Consolidated_Statements_of_Com1

Consolidated Statements of Comprehensive Income (Parentheticals) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Derivative and hedging activity, tax benefit (expense)	$160	$385	($1,047)
Pension and post employment benefit adjustment, tax	($17,613)	$7,676	$12,292

Consolidated_Statements_of_Cas

Consolidated Statements of Cash Flows (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Cash flows from operating activities:	'	'	'
Net income	$19,707	$24,664	$39,979
Adjustments to reconcile net income to net cash provided from operating activities:	'	'	'
Depreciation, depletion and amortization	41,649	37,046	43,635
Amortization of deferred financing costs in interest expense	679	649	559
Stock-based compensation expense	5,741	5,889	5,000
Deferred tax (benefit) expense	-2,442	-2,462	-1,668
Changes in assets and liabilities net of acquired assets and liabilities:	'	'	'
Decrease (increase) in accounts receivable	11,956	-8,913	26,818
Decrease (increase) in other receivables	160	4,197	-630
Decrease (increase) in inventory	-8,241	-18,880	-30,016
Decrease (increase) in prepaid and other current assets	6,647	483	-7,571
Increase (decrease) in accounts payable and accrued expenses	-7,739	1,472	-2,580
Increase (decrease) in unearned revenue	-1,064	-1,491	661
Increase (decrease) in interest and taxes payable	2,391	-2,324	-5,891
Increase (decrease) in long-term liabilities	6,879	-5,053	-15,993
Other — net	-401	3,343	4,503
Net cash provided from operating activities	75,922	38,620	56,806
Cash flows from investing activities:	'	'	'
Payments for purchase of property, plant and equipment	-27,848	-34,088	-28,187
Payments for mine development	-4,776	-10,573	-560
Reimbursement for capital spending under government contract	0	991	5,386
Payments for purchase of business less cash received	0	-3,894	-22,448
Proceeds from sale of property, plant and equipment	22	0	54
Other investments — net	15	4,201	-4,274
Net cash (used in) investing activities	-32,587	-43,363	-50,029
Cash flows from financing activities:	'	'	'
Issuance (repayment) of short-term debt	-13,692	8,594	-6,950
Proceeds from issuance of long-term debt	70,423	32,403	118,582
Repayment of long-term debt	-86,036	-27,986	-116,425
Principal payments under capital lease obligations	-657	-749	-812
Cash dividends paid	-6,497	-4,615	0
Deferred financing costs	-1,587	0	-2,637
Repurchase of common stock	0	-119	-3,776
Issuance of common stock under stock option plans	1,163	158	735
Tax benefit from stock compensation realization	711	817	658
Net cash (used in) provided from financing activities	-36,172	8,503	-10,625
Effects of exchange rate changes on cash and cash equivalents	-445	41	-1
Net change in cash and cash equivalents	6,718	3,801	-3,849
Cash and cash equivalents at beginning of year	16,056	12,255	16,104
Cash and cash equivalents at end of year	$22,774	$16,056	$12,255

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Current assets	'	'
Cash and cash equivalents	$22,774	$16,056
Accounts receivable (net of allowance of $1,421 for 2013 and $1,403 for 2012)	112,767	126,482
Other receivables	245	405
Inventories	213,392	206,125
Prepaid expenses	35,761	41,685
Deferred income taxes	9,566	10,236
Total current assets	394,505	400,989
Long-term deferred income taxes	4,672	19,946
Property, plant and equipment	782,879	779,785
Less allowances for depreciation, amortization and depletion	-520,986	-507,243
Property, plant and equipment — net	261,893	272,542
Intangible assets	24,248	28,869
Other assets	3,874	3,818
Goodwill	88,753	88,753
Total Assets	777,945	814,917
Current liabilities	'	'
Short-term debt	35,566	49,432
Accounts payable	36,556	42,281
Salaries and wages	28,202	27,768
Taxes other than income taxes	1,527	1,055
Other liabilities and accrued items	25,122	26,988
Unearned revenue	479	1,543
Income taxes	1,564	0
Total current liabilities	129,016	149,067
Other long-term liabilities	16,531	16,173
Retirement and post-employment benefits	80,275	125,978
Unearned income	56,490	61,184
Long-term income taxes	1,576	1,510
Deferred income taxes	1,469	1,130
Long-term debt	29,267	44,880
Shareholders’ equity	'	'
Serial preferred stock (no par value; 5,000 authorized shares, none issued)	0	0
Common stock (no par value; 60,000 authorized shares, issued shares of 27,164 for 2013 and 27,050 for 2012)	197,576	191,169
Retained earnings	441,518	428,394
Common stock in treasury (6,274 shares for 2013 and 6,607 shares for 2012)	-118,151	-118,298
Other comprehensive income (loss)	-59,888	-88,429
Other equity transactions	2,266	2,159
Total shareholders’ equity	463,321	414,995
Total Liabilities and Shareholders’ Equity	$777,945	$814,917

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, except Share data, unless otherwise specified
Statement of Financial Position [Abstract]	'	'
Allowance for accounts receivable	$1,421	$1,403
Serial preferred stock, shares authorized	5,000,000	5,000,000
Common stock, shares authorized	60,000,000	60,000,000
Common stock, shares, issued	27,164,000	27,050,000
Treasury stock, shares	6,274,000	6,607,000

Consolidated_Statements_of_Sha

Consolidated Statements of Shareholders' Equity (USD $)	Total	Common Stock	Retained Earnings	Common Stock In Treasury	Other Comprehensive Income (Loss)	Other Equity Transactions
In Thousands, unless otherwise specified
Beginning balances at Dec. 31, 2010	$384,356	$180,161	$368,401	($115,090)	($51,616)	$2,500
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'
Net income	39,979	'	39,979	'	'	'
Other comprehensive income	-20,599	'	'	'	-20,599	'
Proceeds from exercise of 53, 16, and 74 shares under option plans for the years ended 2011, 2012 and 2013, respectively	735	735	'	'	'	'
Income tax benefit from stock compensation realization	658	658	'	'	'	'
Repurchase of 132 and 6 shares for the years ended 2011 and 2012, respectively	-3,776	'	'	-3,776	'	'
Stock-based compensation expense	5,000	5,000	'	'	'	'
Shares withheld for employee taxes on equity awards	-641	-641	'	'	'	'
Directors' deferred compensation	270	'	'	587	'	-317
Ending balances at Dec. 31, 2011	405,982	185,913	408,380	-118,279	-72,215	2,183
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'
Net income	24,664	'	24,664	'	'	'
Other comprehensive income	-16,214	'	'	'	-16,214	'
Cash dividends declared	-4,650	'	-4,650	'	'	'
Proceeds from exercise of 53, 16, and 74 shares under option plans for the years ended 2011, 2012 and 2013, respectively	158	158	'	'	'	'
Income tax benefit from stock compensation realization	817	817	'	'	'	'
Repurchase of 132 and 6 shares for the years ended 2011 and 2012, respectively	-119	'	'	-119	'	'
Stock-based compensation expense	5,889	5,889	'	'	'	'
Shares withheld for employee taxes on equity awards	-1,608	-1,608	'	'	'	'
Directors' deferred compensation	76	'	'	100	'	-24
Ending balances at Dec. 31, 2012	414,995	191,169	428,394	-118,298	-88,429	2,159
Increase (Decrease) in Stockholders' Equity [Roll Forward]	'	'	'	'	'	'
Net income	19,707	'	19,707	'	'	'
Other comprehensive income	28,541	'	'	'	28,541	'
Cash dividends declared	-6,583	'	-6,583	'	'	'
Proceeds from exercise of 53, 16, and 74 shares under option plans for the years ended 2011, 2012 and 2013, respectively	1,163	1,163	'	'	'	'
Income tax benefit from stock compensation realization	711	711	'	'	'	'
Stock-based compensation expense	5,741	5,741	'	'	'	'
Shares withheld for employee taxes on equity awards	-1,208	-1,208	'	'	'	'
Directors' deferred compensation	254	'	'	147	'	107
Ending balances at Dec. 31, 2013	$463,321	$197,576	$441,518	($118,151)	($59,888)	$2,266

Consolidated_Statements_of_Sha1

Consolidated Statements of Shareholders' Equity (Parenthetical)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Statement of Stockholders' Equity [Abstract]	'	'
Proceeds from exercise of shares under option plans (in shares)	16	53
Repurchase of shares (in shares)	6	132

Significant_Accounting_Policie

Significant Accounting Policies	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Significant Accounting Policies	'
	Significant Accounting Policies
	Organization:  The Company is a holding company with subsidiaries that have operations in the United States, Europe and Asia. These operations manufacture advanced engineered materials used in a variety of markets, including consumer electronics, defense and science, industrial components and commercial aerospace, automotive electronics, telecommunications infrastructure, energy, medical and appliance. The Company has four reportable segments:
	Advanced Material Technologies manufactures precious and non-precious vapor deposition targets, frame lid assemblies, advanced chemicals, performance coatings, optics, microelectronic packages, other precious and non-precious metal products and specialty inorganic materials;
	Performance Alloys manufactures high precision strip and bulk products from copper and nickel-based alloys;
	Beryllium and Composites produces beryllium metal, beryllium and non-beryllium metal matrix composites and beryllia ceramics in a variety of forms; and
	Technical Materials manufactures clad inlay and overlay metals, precious and base metal electroplated systems and other related products.
	See Note M to the Consolidated Financial Statements for additional segment details. The Company is vertically integrated and distributes its products through a combination of company-owned facilities and independent distributors and agents.
	Use of Estimates:    The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results may differ from those estimates.
	Consolidation:    The Consolidated Financial Statements include the accounts of Materion Corporation and its subsidiaries. All of the Company’s subsidiaries are wholly owned as of December 31, 2013. Intercompany accounts and transactions are eliminated in consolidation.
	Cash Equivalents:    All highly liquid investments with a maturity of three months or less when purchased are considered to be cash equivalents.
	Accounts Receivable:    An allowance for doubtful accounts is maintained for the estimated losses resulting from the inability of customers to pay the amounts due. The allowance is based upon identified delinquent accounts, customer payment patterns and other analyses of historical data and trends. The Company extends credit to customers based upon their financial condition and generally collateral is not required.
	Inventories:    Inventories are stated at the lower of cost or market. The cost of the majority of domestic inventories is determined using the last-in, first-out (LIFO) method. The remaining inventories are stated principally at average cost.
	Property, Plant and Equipment:    Property, plant and equipment is stated on the basis of cost. Depreciation is computed principally by the straight-line method, except certain assets for which depreciation may be computed by the units-of-production or the sum-of-the-years-digit method. The depreciable lives that are used in computing the annual provision for depreciation by class of asset are as follows:
		Years
	Land improvements	5 to 25
	Buildings	10 to 40
	Leasehold improvements	Life of lease
	Machinery and equipment	3 to 15
	Furniture and fixtures	4 to 15
	Automobiles and trucks	2 to 8
	Research equipment	6 to 12
	Computer hardware	3 to 10
	Computer software	3 to 10
	An asset acquired under a capital lease will be recorded at the lesser of the present value of the projected lease payments or the fair value of the asset and will be depreciated in accordance with the above schedule. Leasehold improvements will be depreciated over the life of the improvement if it is shorter than the life of the lease. Repair and maintenance costs are expensed as incurred.
	Mineral Resources and Mine Development:    Property acquisition costs are capitalized as mineral resources on the balance sheet and are depleted using the units-of-production method based upon recoverable proven reserves. Mine development costs are capitalized once mineralization has been classified as proven or probable reserves. Drilling and related costs are capitalized for an ore body where proven and probable reserves exist if those activities are directed at obtaining additional information about the ore body or convert mineralized materials into proven or probable reserves. Drilling costs incurred during the production phase are allocated to inventory. The cost of removing overburden and waste materials to access the ore body in an open pit are capitalized and amortized as the ore is extracted using the units-of-production method based upon the proven reserves in that particular pit. Costs incurred to access specific ore blocks or areas that only provide benefit over the life of that area are amortized over the estimated life of that specific ore block area.
	Goodwill and Other Intangible Assets:    Goodwill is not amortized, but instead reviewed annually as of December 31 of each year, or more frequently under certain circumstances, for impairment. Goodwill is assigned to the reporting unit, which is the operating segment level or one level below the operating segment. Intangible assets with finite lives are amortized using the straight-line method or effective interest method, as applicable, over the periods estimated to be benefited, which is generally twenty years or less. Finite-lived intangible assets are also reviewed for impairment if facts and circumstances warrant.
	Asset Impairment:    In the event that facts and circumstances indicate that the carrying value of long-lived assets may be impaired, an evaluation of recoverability is performed by comparing the carrying value of the assets to the associated estimated future undiscounted cash flow. If the carrying value exceeds that cash flow, then the assets are written down to their fair values.
	Derivatives:    The Company recognizes all derivatives on the balance sheet at their fair values. If the derivative is designated and effective as a cash flow hedge, changes in the fair value of the derivative are recognized in other comprehensive income (loss), a component of shareholders’ equity, until the hedged item is recognized in earnings. If the derivative is designated as a fair value hedge, changes in its value are offset against the change in the value of the hedged asset, liability or commitment through earnings. The ineffective portion of a derivative’s change in fair value, if any, is recognized in earnings immediately. If a derivative is not a hedge, changes in its fair value are adjusted through income.
	Asset Retirement Obligation:    The Company records a liability to recognize the legal obligation to remove an asset at the time the asset is acquired or when the legal liability arises. The liability is recorded for the present value of the ultimate obligation by discounting the estimated future cash flows using a credit-adjusted risk-free interest rate. The liability is accreted over time, with the accretion charged to expense. An asset equal to the fair value of the liability is recorded concurrent with the liability and depreciated over the life of the underlying asset.
	Unearned Income:    Expenditures for capital equipment to be reimbursed under government contracts are recorded in construction in process while the reimbursements for those expenditures are recorded in unearned income, a liability on the balance sheet. When the assets subject to reimbursement are placed in service, their total cost is depreciated over their useful lives and the unearned income liability is reduced and credited to cost of sales on the Consolidated Statements of Income ratably with the annual depreciation expense. Depreciation and amortization expense on the Consolidated Statement of Cash Flows is shown net of the associated current period reduction in the unearned income liability.
	Revenue Recognition:    The Company generally recognizes revenue when the goods are shipped and title passes to the customer. The Company requires persuasive evidence that a revenue arrangement exists, delivery of the product has occurred, the selling price is fixed or determinable and collectibility is reasonably assured before revenue is realized and earned. Billings in advance of the shipment of the goods are recorded as unearned revenue, which is a liability on the balance sheet. Revenue is recognized for these transactions when the goods are shipped and all other revenue recognition criteria are met.
	Shipping and Handling Costs:    The Company records shipping and handling costs for products sold to customers in cost of sales on the Consolidated Statements of Income.
	Advertising Costs:    The Company expenses all advertising costs as incurred. Advertising costs were $1.1 million in 2013, $1.2 million in 2012, $3.1 million in 2011.
	Stock-based Compensation:    All stock-based compensation instruments, including options, stock appreciation rights, restricted stock and performance restricted stock, are viewed collectively when determining the accounting treatment of the tax considerations upon the realization of the benefit by the recipient.
	Capitalized Interest: Interest expense associated with active capital asset construction and mine development projects is capitalized and amortized over the future useful lives of the related assets.
	Income Taxes:    The Company uses the liability method in measuring the provision for income taxes and recognizing deferred tax assets and liabilities on the balance sheet. The Company will record a valuation allowance to reduce the deferred tax assets to the amount that is more likely than not to be realized, as warranted by the facts and circumstances. The Company applies a more-likely-than-not recognition threshold for all tax uncertainties and will record a liability for those tax benefits that have a less than 50% likelihood of being sustained upon examination by the taxing authorities.
	Net Income Per Share:    Basic earnings per share (EPS) is computed by dividing income available to common stockholders by the weighted-average number of common shares outstanding for the period. Diluted EPS reflects the assumed conversion of all dilutive common stock equivalents as appropriate under the treasury stock method.
	Reclassification:    Certain amounts in prior years have been reclassified to conform to the 2013 consolidated financial statement presentation.
	New Pronouncements:    In 2011, the Financial Accounting Standards Board (FASB) issued two Accounting Standards Updates (ASU) which amended guidance for the presentation of comprehensive income. The amended guidance requires an entity to present components of net income and other comprehensive income in one continuous statement, referred to as the statement of comprehensive income, or in two separate, but consecutive statements. The current option to report other comprehensive income and its components in the statement of stockholders’ equity was eliminated. Although the new guidance changes the presentation of comprehensive income, there were no changes to the components that are recognized in net income or other comprehensive income under existing guidance. The ASU is effective for interim and annual periods beginning after December 15, 2011 and retrospective application is required. The Company adopted these ASUs beginning with its disclosures for the first quarter 2012.
	In February 2013, the FASB issued guidance that requires an entity to disclose information showing the effect of the items reclassified from accumulated other comprehensive income on the line items of net income. The provisions of this new guidance were effective prospectively as of the beginning of our 2013 fiscal year. Accordingly, an enhanced footnote disclosure for the year ended December 31, 2013 was included.
	In July 2013, the Financial Accounting Standards Board (FASB) issued new accounting guidance that requires an entity to net its liability for unrecognized tax positions against a net operating loss carryforward, a similar tax loss or a tax credit carryforward when settlement in this manner is available under the tax law. The provisions of this new guidance are effective as of the beginning of 2014. Adoption of this new guidance is not expected to have a material impact on the financial statements.

Acquisitions

Acquisitions	12 Months Ended
	Dec. 31, 2013
Business Combinations [Abstract]	'
Acquisitions	'
	Acquisitions
	In the first quarter 2012, the Company acquired all of the outstanding stock of Aerospace Metal Composites Limited (AMC) of Farnborough, England for $3.3 million, net of $1.5 million of cash acquired. AMC manufactures ultrafine particulate reinforced metal matrix composites, primarily aluminum materials, that are used in performance automotive, aerospace, defense and precision high speed machinery applications. Goodwill was valued at $1.9 million.
	In the fourth quarter of 2011, the Company acquired the outstanding stock of EIS Optics Limited (EIS) for $23.0 million, net of $1.5 million of cash acquired. EIS manufactures optical thin film filters, glass processing, lithography and optical subassemblies that allow for the precision management of light in a broad range of end-use applications throughout the projection display, entertainment lighting, sensors, medical instruments and gaming industries. EIS manufactures its products at a 101,000 square foot facility in Shanghai, China. The $23.0 million net purchase price includes $0.6 million paid by the Company in the first quarter of 2012 as a result of the resolution of working capital valuation adjustments in accordance with the purchase agreement. Goodwill assigned to the transaction totaled $13.9 million.
	Both of these acquisitions were financed with a combination of cash on hand and borrowings under the existing revolving credit agreement.
	The results of the above acquired businesses were included in the Company’s financial statements since their respective acquisition dates. The AMC acquisition is included in the Beryllium and Composites segment while the EIS acquisition is included in the Advanced Material Technologies segment. See Note E to the Consolidated Financial Statements for additional information on the intangible assets associated with these acquisitions.

Inventories

Inventories	12 Months Ended
	Dec. 31, 2013
Inventory Disclosure [Abstract]	'
Inventories	'
	Inventories
	Inventories on the Consolidated Balance Sheets are summarized as follows:
		December 31,
	(Thousands)	2013		2012
	Principally average cost:
	Raw materials and supplies	$	42,352	$	42,751
	Work in process	203,107		203,179
	Finished goods	45,503		51,094
	Gross inventories	290,962		297,024
	Excess of average cost over LIFO inventory value	77,570		90,899
	Net inventories	$	213,392	$	206,125
	Average cost approximates current cost. Gross inventories accounted for using the LIFO method totaled $195.0 million at December 31, 2013 and $195.7 million at December 31, 2012. The use of the LIFO method results in a better matching of revenue and costs. The liquidation of LIFO inventory layers reduced cost of sales by $1.0 million in 2013 and $0.5 million in 2012.

Property_Plant_and_Equipment

Property, Plant and Equipment	12 Months Ended
	Dec. 31, 2013
Property, Plant and Equipment [Abstract]	'
Property, Plant and Equipment	'
	Property, Plant and Equipment
	Property, plant and equipment on the Consolidated Balance Sheets is summarized as follows:
		December 31,
	(Thousands)	2013			2012
	Land	$	8,097		$	8,797
	Buildings	128,187			127,691
	Machinery and equipment	569,617			570,001
	Software	31,571			31,640
	Construction in progress	14,363			15,389
	Allowances for depreciation	(510,718		)	(503,560		)
	Subtotal	241,117			249,956
	Capital leases	10,912			10,912
	Allowances for amortization	(1,728		)	(1,440		)
	Subtotal	9,184			9,472
	Mineral resources	4,979			4,979
	Mine development	15,153			10,377
	Allowances for amortization and depletion	(8,540		)	(2,243		)
	Subtotal	11,592			13,113
	Property, plant and equipment — net	$	261,893		$	272,542
	The Company has a Title III contract with the Department of Defense (DoD) for the design and development of a primary beryllium production facility. Construction of the facility would not have been economically feasible without assistance from the government. The cost of the project, which included the equipment and building and project design, administrative and other general costs that were not capitalizable as fixed assets, totaled approximately $104.9 million. The Company capitalized $14.7 million of fixed assets and $10.0 million of capital leases as a portion of its cost share for the project. Reimbursements received by the Company from the DoD included $63.5 million for its share of the cost of equipment that was purchased by the Company and installed in the facility. The cost paid by the Company was recorded in property, plant and equipment and the reimbursement from the government was recorded as unearned income on the Consolidated Balance Sheets. The unearned income liability will be reduced and credited to income ratably with the depreciation expense recorded over the useful life the equipment.
	The equipment was placed in service during 2012. Depreciation expense on the portion of the equipment whose cost was reimbursed by the DoD was $4.7 million in 2013 and $2.3 million in 2012. Accordingly, unearned income was reduced by $4.7 million in 2013 and $2.3 million in 2012 and credited to cost of sales in the Consolidated Statement of Income, offsetting the impact of the depreciation expense on the associated equipment on the Company's cost of sales and gross margin.
	Depreciation expense, including amortization for assets recorded under capital lease, was $36.1 million in 2013, $31.0 million in 2012 and $37.5 million in 2011. The expense in 2013 and 2012 is net of the above referenced reductions in the unearned income liability. Depreciation, depletion and amortization as shown on the Consolidated Statement of Cash Flows is also net of the reduction in the unearned income liability in 2013 and 2012. The net book value of capitalized software as of December 31, 2013 was $7.0 million and $8.5 million as of December 31, 2012. Depreciation expense related to software was $1.7 million in 2013, $1.6 million in 2012 and $1.2 million in 2011.

Intangible_Assets

Intangible Assets	12 Months Ended
	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'
Intangible Assets	'
	Intangible Assets
	Assets Acquired
	The Company incurred $1.6 million for deferred financing costs associated with new debt agreements in 2013 with a weighted-average amortization period of 4.8 years.
	Assets Subject to Amortization
	The cost, accumulated amortization and net book value of intangible assets subject to amortization as of December 31, 2013 and 2012 and the aggregate amortization expense for each year then ended is as follows:
	(Thousands)	2013			2012
	Deferred financing costs
	Cost	$	7,794		$	6,427
	Accumulated amortization	(4,507		)	(4,048		)
	Net book value	3,287			2,379
	Customer relationships
	Cost	38,427			38,427
	Accumulated amortization	(22,624		)	(18,703		)
	Net book value	15,803			19,724
	Technology
	Cost	12,092			12,092
	Accumulated amortization	(7,626		)	(6,538		)
	Net book value	4,466			5,554
	License
	Cost	2,480			2,480
	Accumulated amortization	(1,828		)	(1,340		)
	Net book value	652			1,140
	Non-compete contracts
	Cost	550			550
	Accumulated amortization	(550		)	(530		)
	Net book value	—			20
	Trade Name
	Cost	62			62
	Accumulated amortization	(22		)	(10		)
	Net book value	40			52
	Total
	Cost	$	61,405		$	60,038
	Accumulated amortization	(37,157		)	(31,169		)
	Net book value	$	24,248		$	28,869
	Aggregate amortization expense	$	6,208		$	6,657
	The aggregate amortization expense is estimated to be $5.9 million in 2014, $5.8 million in 2015, $5.1 million in 2016, $4.5 million in 2017 and $1.7 million in 2018.
	Assets Not Subject to Amortization
	The Company’s only intangible asset not subject to amortization is goodwill. A reconciliation of the goodwill activity for 2013 and 2012 is as follows:
	(Thousands)	2013			2012
	Balance at the beginning of the year	$	88,753		$	84,036
	Current year additions	—			4,717
	Balance at the end of the year	$	88,753		$	88,753
	Goodwill totaling $86.9 million has been assigned to the Advanced Material Technologies segment while the remaining $1.9 million has been assigned to the Beryllium and Composites segment.
	The goodwill acquired in 2012 was not deductible for tax purposes.

Debt

Debt	12 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
Debt	'
	Debt
	Long-term debt on the Consolidated Balance Sheets is summarized as follows:
			December 31,
	(Thousands)		2013			2012
	Revolving credit agreement		$	15,000		$	30,000
	Fixed rate industrial development revenue bonds payable in annual installments through 2021		6,575			7,158
	Variable rate industrial development revenue bonds payable in 2016		8,305			8,305
	Total outstanding		29,880			45,463
	Current portion of long-term debt		(613		)	(583		)
	Total		$	29,267		$	44,880
	Maturities on long-term debt instruments as of December 31, 2013 are as follows:
	2014	$	613
	2015	653
	2016	9,000
	2017	733
	2018	15,773
	Thereafter	3,108
	Total	$	29,880
	In July 2013, the Company entered into an amended and restated credit agreement (Credit Agreement) with six financial institutions that expires in 2018 and provides for a $375.0 million revolving credit facility comprised of sub-facilities for revolving loans, swing line loans, letters of credit and foreign borrowings. The Credit Agreement also provides for an uncommitted incremental facility whereby, under certain conditions, the Company may be able to borrow additional term loans in an aggregate amount not to exceed $100.0 million. Borrowings under the revolving credit facility are secured by substantially all of the assets of the Company and its direct subsidiaries, with the exception of non-mining real property and certain other assets. The Credit Agreement allows the Company to borrow money at a premium over LIBOR or the prime rate and at varying maturities. The premium resets quarterly according to the terms and conditions available under the agreement. At December 31, 2013 there was $39.5 million outstanding against the letters of credit sub-facility. The Company pays a variable commitment fee that resets quarterly (0.225% as of December 31, 2013) of the available and unborrowed amounts under the revolving credit line.
	The Credit Agreement contains restrictive covenants including incurring additional indebtedness, acquisition limits, dividend declarations and stock repurchases. In addition, the Credit Agreement includes covenants over a maximum leverage ratio and a minimum fixed charge coverage ratio. The Company was in compliance with all of its debt covenants as of December 31, 2013.
	The following table summarizes the Company’s short-term lines of credit. Amounts shown as outstanding are included in short-term debt on the Consolidated Balance Sheets.
			December 31, 2013								December 31, 2012
	(Thousands)		Total			Outstanding			Available		Total		Outstanding		Available
	Domestic		$	320,510		$	6,291		$	314,219	$	256,799	$	8,000	$	248,799
	Foreign		13,320			—			13,320		15,266		1,415		13,851
	Precious metal		28,662			28,662			—		39,435		39,435		—
	Total		$	362,492		$	34,953		$	327,539	$	311,500	$	48,850	$	262,650
	While the available borrowings under the individual existing credit lines total $327.5 million, the covenants in the domestic credit agreement restrict the aggregate available borrowings to $186.8 million as of December 31, 2013.
	The domestic line is committed and includes all sub-facilities in the $375.0 million maximum borrowing under the revolving credit agreement. The Company has various foreign lines of credit, one of which is for 3.5 million euros is committed and secured. The remaining foreign lines are uncommitted, unsecured and renewed annually. The average interest rate on short-term debt was 2.47% and 2.43% as of December 31, 2013 and 2012, respectively.
	In April 2011, the Company entered into an agreement with the Toledo-Lucas County Port Authority and the Dayton–Montgomery County Port Authority, who co-issued $8.0 million in taxable development revenue bonds, with a fixed amortization term that will mature in 2021. The interest rate on these bonds is fixed at 4.9% and the unamortized balance of the bonds was $6.6 million at December 31, 2013.
	In November 1996, the Company entered into an agreement with the Lorain Port Authority, Ohio to issue $8.3 million in variable rate industrial revenue bonds, maturing in 2016. The variable rate ranged from 0.19% to 0.38% in 2013 and from 0.26% to 0.46% in 2012.

Leasing_Arrangements

Leasing Arrangements	12 Months Ended
	Dec. 31, 2013
Leases [Abstract]	'
Leasing Arrangements	'
	Leasing Arrangements
	The Company leases warehouse and manufacturing space, and manufacturing and computer equipment under operating leases with terms ranging up to 25 years. Operating lease expense amounted to $9.4 million, $9.0 million, and $8.9 million during 2013, 2012, and 2011, respectively. The future estimated minimum payments under capital leases and non-cancelable operating leases with initial lease terms in excess of one year at December 31, 2013, are as follows:
		Capital		Operating
	(Thousands)	Leases		Leases
	2014	$	1,076	$	6,931
	2015	1,069		6,227
	2016	1,064		5,257
	2017	1,064		4,032
	2018	1,064		3,436
	2019 and thereafter	4,701		12,110
	Total minimum lease payments	10,038		$	37,993
	Amounts representing interest	2,151
	Present value of net minimum lease payments	$	7,887
	The Company was in compliance with all of the covenants contained in the lease agreements as of December 31, 2013.

Fair_Value_Information_and_Der

Fair Value Information and Derivative Financial Instruments	12 Months Ended
	Dec. 31, 2013
Fair Value Information and Derivative Financial Instruments [Abstract]	'
Fair Value Information and Derivative Financial Instruments	'
	Fair Value Information and Derivative Financial Instruments
	The Company measures and records financial instruments at their fair value. A hierarchy is used for those instruments measured at fair value that distinguishes between assumptions based upon market data (observable inputs) and the Company's assumptions (unobservable inputs). The hierarchy consists of three levels:
	Level 1 — Quoted market prices in active markets for identical assets and liabilities;
	Level 2 — Inputs other than Level 1 inputs that are either directly or indirectly observable; and
	Level 3 — Other significant unobservable inputs developed using estimates and assumptions developed by the Company, which reflect those that a market participant would use.
	The following table summarizes the financial instruments measured at fair value in the Consolidated Balance Sheet as of December 31, 2013:
				Fair Value Measurements
	(Thousands)	Total		Quoted Prices			Significant		Other
				in Active			Observable		Significant
				Markets for			Inputs		Unobservable
				Identical			(Level 2)		Inputs
				Assets					(Level 3)
				(Level 1)
	Financial Assets
	Directors’ deferred compensation investments	$	535	$	535		$	—	$	—
	Precious metal forward contracts	11		—			11		—
	Foreign currency forward contracts	292		—			292		—
	Total	$	838	$	535		$	303	$	—
	Financial Liabilities
	Directors’ deferred compensation liability	$	535	$	535		$	—	$	—
	Precious metal swaps	30		—			30		—
	Foreign currency forward contracts	379		—			379		—
	Total	$	944	$	535		$	409	$	—
	The Company uses a market approach to value the assets and liabilities for outstanding derivative contracts in the table above. Foreign currency and precious metal hedge contracts are valued through models that utilize market observable inputs including both spot and forward prices for the same underlying currencies and metals. The carrying values of the other working capital items and debt on the Consolidated Balance Sheet approximate their fair values as of December 31, 2013.
	The Company uses derivative contracts to hedge portions of its foreign currency exposures and may also use derivatives to hedge a portion of its precious metal exposures. The objectives and strategies for using derivatives in these areas are as follows:
	Foreign Currency.    The Company sells products to overseas customers in their local currencies, primarily the euro and yen. The Company secures foreign currency derivatives, mainly forward contracts and options, to hedge these anticipated sales transactions. The purpose of the hedge program is to protect against the reduction in the dollar value of foreign currency sales from adverse exchange rate movements. Should the dollar strengthen significantly, the decrease in the translated value of the foreign currency sales should be partially offset by gains on the hedge contracts. Depending upon the methods used, the hedge contract may limit the benefits from a weakening U.S. dollar.
	The use of forward contracts locks in a firm rate and eliminates any downside from an adverse rate movement as well as any benefit from a favorable rate movement. The Company may from time to time choose to hedge with options or a tandem of options known as a collar. These hedging techniques can limit or eliminate the downside risk but can allow for some or all of the benefit from a favorable rate movement to be realized. Unlike a forward contract, a premium is paid for an option; collars, which are a combination of a put and call option, may have a net premium but they can be structured to be cash neutral. The Company will primarily hedge with forward contracts due to the relationship between the cash outlay and the level of risk.
	Precious Metals.    The Company maintains the majority of its precious metal production requirements on consignment in order to reduce its working capital investment and the exposure to metal price movements. When a precious metal product is fabricated and ready for shipment to the customer, the metal is purchased out of consignment at the current market price. The price paid by the Company forms the basis for the price charged to the customer. This methodology allows for changes in either direction in the market prices of the precious metals used by the Company to be passed through to the customer and reduces the impact changes in prices could have on the Company's margins and operating profit. The consigned metal is owned by financial institutions who charge the Company a financing fee based upon the current value of the metal on hand.
	In certain instances, a customer may want to establish the price for the precious metal at the time the sales order is placed rather than at the time of shipment. Setting the sales price at a different date than when the material would be purchased potentially creates an exposure to movements in the market price of the metal. Therefore, in these limited situations, the Company may elect to enter into a forward contract to purchase precious metal. The forward contract allows the Company to purchase metal at a fixed price on a specific future date. The price in the forward contract serves as the basis for the price to be charged to the customer. By doing so, the selling price and purchase price are matched and the Company's price exposure is reduced.
	The Company refines precious metal containing materials for its customers and typically will purchase the refined metal from the customer at current market prices. In limited circumstances, the customer may want to fix the price to be paid at the time of the order as opposed to when the material is refined. The customer may also want to fix the price for a set period of time. The Company may then elect to enter into a hedge contract, either a forward contract or a swap, to fix the price for the estimated quantity of metal to be purchased thereby reducing the exposure to adverse movements in the price of the metal.
	The Company may from time to time elect to purchase precious metal and hold in its inventory rather than on consignment due to potential credit line limitations or other factors. These purchases are typically held for a short duration. A forward contract will be secured at the time of the purchase to fix the price to be used when the metal is transferred back to the consignment line, thereby limiting any price exposure during the time when the metal was owned.
	A team consisting of senior financial managers reviews the estimated exposure levels, as defined by budgets, forecasts and other internal data, and determines the timing, amounts and instruments to use to hedge that exposure. Management analyzes the effective hedged rates and the actual and projected gains and losses on the hedging transactions against the program objectives, targeted rates and levels of risk assumed. Foreign currency contracts are typically layered in at different times for a specified exposure period in order to minimize the impact of market rate movements.
	The use of derivatives is governed by policies adopted by the Audit Committee of the Board of Directors. The Company will only enter into a derivative contract if there is an underlying identified exposure. Contracts are typically held to maturity. The Company does not engage in derivative trading activities and does not use derivatives for speculative purposes. The Company only uses hedge contracts that are denominated in the same currency or metal as the underlying exposure.
	The fair values of the outstanding derivatives are recorded as assets (if the derivatives are in a gain position) or liabilities (if the derivatives are in a loss position). The fair values will also be classified as short term or long term depending upon their maturity dates. The following table summarizes the notional amount and the fair value of the Company’s outstanding derivatives and their balance sheet classification as of December 31, 2013 and 2012:
		31-Dec-13					31-Dec-12
	(Thousands)	Notional		Fair			Notional		Fair
		Amount		Value			Amount		Value
	Prepaid expenses
	Foreign currency forward contracts - yen	$	4,951	$	292		$	8,024	$	650
	Precious metal forward contracts	5,663		11			14,623		197
	Total	10,614		303			22,647		847
	Other liabilities and accrued items
	Foreign currency forward contracts - euro	25,112		(364		)	21,047		(397		)
	Precious metal swaps	4,511		(30		)	11,673		(100		)
	Total	29,623		(394		)	32,720		(497		)
	Other long-term liabilities
	Foreign currency forward contracts - euro	952		(15		)	—		—
	Total	$	41,189	$	(106	)	$	55,367	$	350
	All of the foreign currency and precious metal derivative contracts outstanding at December 31, 2013 and 2012 were designated and effective as cash flow hedges.
	There was no ineffectiveness associated with the derivative contracts outstanding at December 31, 2013 and 2012, and no ineffectiveness expense was recorded in 2013, 2012 or 2011.
	The change in the fair value of derivative contracts recorded in accumulated other comprehensive income totaled ($0.1) million as of December 31, 2013. The Company expects to relieve substantially all of this balance to expense on the Consolidated Statement of Income in 2014. The change in fair value of derivative contracts in accumulated other comprehensive income totaled $0.4 million at December 31, 2012.

Pensions_and_Other_Postretirem

Pensions and Other Post-retirement Benefits	12 Months Ended
	Dec. 31, 2013
Compensation and Retirement Disclosure [Abstract]	'
Pensions and Other Post-retirement Benefits	'
	Pensions and Other Post-retirement Benefits
	The obligation and funded status of the Company’s pension and other post-retirement benefit plans are shown below. The Pension Benefits column aggregates defined benefit pension plans in the U.S., Germany and England and the U.S. supplemental retirement plans. The Other Benefits column includes the domestic retiree medical and life insurance plan.
			Pension Benefits								Other Benefits
	(Thousands)		2013				2012				2013				2012
	Change in benefit obligation
	Benefit obligation at beginning of year		$	253,839			$	210,996			$	34,294			$	33,209
	Service cost		9,724				7,915				305				285
	Interest cost		9,936				9,912				1,243				1,439
	Plan amendments		—				117				—				—
	Actuarial (gain) loss		(28,581		)		32,595				(2,396		)		1,493
	Benefit payments from fund		(22,893		)		(7,523		)		—				—
	Benefit payments directly by Company		(136		)		(129		)		(2,271		)		(2,431		)
	Expenses paid from assets		(613		)		(293		)		—				—
	Medicare Part D subsidy		—				—				223				299
	Foreign currency exchange rate changes		472				249				—				—
	Benefit obligation at end of year		221,748				253,839				31,398				34,294
	Change in plan assets
	Fair value of plan assets at beginning of year		163,436				140,344				—				—
	Actual return on plan assets		23,824				18,534				—				—
	Employer contributions		9,615				12,218				—				—
	Benefit payments from fund		(22,893		)		(7,523		)		—				—
	Expenses paid from assets		(613		)		(293		)		—				—
	Foreign currency exchange rate changes		125				156				—				—
	Fair value of plan assets at end of year		173,494				163,436				—				—
	Funded status at end of year		$	(48,254	)		$	(90,403	)		$	(31,398	)		$	(34,294	)
	Amounts recognized in the Consolidated
	Balance Sheets consist of:
	Other assets		$	1,321			$	1,112			$	—			$	—
	Other liabilities and accrued items		(1,138		)		(475		)		(2,663		)		(2,663		)
	Retirement and post-employment benefits		(48,437		)		(91,040		)		(28,735		)		(31,631		)
			$	(48,254	)		$	(90,403	)		$	(31,398	)		$	(34,294	)
	Amounts recognized in other comprehensive income (before tax) consist of:
	Net actuarial loss		$	78,983			$	127,027			$	52			$	2,472
	Net prior service (credit) cost		(1,734		)		(2,075		)		—				115
			$	77,249			$	124,952			$	52			$	2,587
	Amortizations expected to be recognized during next fiscal year (before tax):
	Amortization of net loss		$	5,100			$	7,731			$	—			$	—
	Amortization of prior service credit		(434		)		(341		)		—				115
			$	4,666			$	7,390			$	—			$	115
	Additional information
	Accumulated benefit obligation for all defined benefit pension plans		$	213,585			$	242,854			—				—
	For defined benefit pension plans with benefit obligations in excess of plan assets:
	Aggregate benefit obligation		216,567				249,075				—				—
	Aggregate fair value of plan assets		166,992				157,560				—				—
	For defined benefit pension plans with accumulated benefit obligations in excess of plan assets:
	Aggregate accumulated benefit obligation		208,404				238,090				—				—
	Aggregate fair value of plan assets		166,992				157,560				—				—
	Components of net periodic benefit cost and other amounts recognized in other comprehensive income (OCI)
			Pension Benefits												Other Benefits
	(Thousands)		2013				2012				2011				2013				2012			2011
	Net periodic benefit cost
	Service cost		$	9,724			$	7,915			$	6,955			$	305			$	285		$	284
	Interest cost		9,936				9,912				9,786				1,243				1,439			1,596
	Expected return on plan assets		(12,261		)		(11,934		)		(11,050		)		—				—			—
	Amortization of prior service cost (benefit)		(340		)		(335		)		(335		)		115				87			(36		)
	Recognized net actuarial loss		7,912				5,605				3,920				—				—			—
	Net periodic benefit cost		$	14,971			$	11,163			$	9,276			$	1,663			$	1,811		$	1,844
		Pension Benefits												Other Benefits
	(Thousands)	2013				2012				2011				2013				2012			2011
	Change in other comprehensive income
	OCI at beginning of year	$	124,955			$	104,056			$	69,716			$	2,587			$	1,180		$	(275	)
	Increase (decrease) in OCI:
	Recognized during year — prior service cost (credit)	340				335				335				(115		)		(87		)	36
Recognized during year — net actuarial (losses) gains	(7,912		)		(5,605		)		(3,920		)		—				—			—
Occurring during year — prior service cost	—				117				430				—				—			—
Occurring during year — net actuarial losses (gains)	(40,143		)		25,995				37,543				(2,397		)		1,494			1,419
Other adjustments	(3		)		—				—				(23		)		—			—
Foreign currency exchange rate changes	12				57				(48		)		—				—			—
OCI at end of year	$	77,249			$	124,955			$	104,056			$	52			$	2,587		$	1,180
Summary of key valuation assumptions
		Pension Benefits									Other Benefits
		2013			2012			2011			2013			2012			2011
Weighted-average assumptions used to determine benefit obligations at fiscal year end
Discount rate		4.8	%		3.99	%		N/A			4.5	%		3.75	%		N/A
Rate of compensation increase		4.43	%		4.44	%		N/A			4.5	%		4.5	%		N/A
Weighted-average assumptions used to determine net cost for the fiscal year
Discount rate		3.97	%		4.81	%		5.49	%		3.75	%		4.5	%		5.13	%
Expected long-term return on plan assets		7.44	%		7.65	%		7.88	%		N/A			N/A			N/A
Rate of compensation increase		4.42	%		4.43	%		3.97	%		4.5	%		4.5	%		4	%
The Company uses a December 31 measurement date for the above plans.
Effective January 1, 2014, the Company revised the expected long-term rate of return assumption used in calculating the annual expense for its domestic defined benefit pension plan, decreasing it to 7.25% from 7.50%. Effective January 1, 2013, the Company revised the expected long-term rate of return assumption used in calculating the annual expense for its domestic defined benefit pension plan, decreasing it to 7.50% from 7.75%, and effective January 1, 2012, this assumption was decreased to 7.75% from 8.00%. In each instance, the impact was accounted for as a change in estimate.
Management establishes the domestic expected long-term rate of return assumption by reviewing its historical trends and analyzing the current and projected market conditions in relation to the plan’s asset allocation and risk management objectives. Consideration is given to both recent plan asset performance as well as plan asset performance over various long-term periods of time, with an emphasis on the assumption being a prospective, long-term rate of return. Management consults with and considers the opinions of its outside investment advisors and actuaries when establishing the rate and reviews its assumptions with the Audit Committee of the Board of Directors. Management believes that the 7.25% domestic expected long-term rate of return assumption is achievable and reasonable given current market conditions and forecasts, asset allocations, investment policies and investment risk objectives.
The rate of compensation increase assumption was changed to 4.5% for 2012 and years after in the domestic defined benefit pension plan and the domestic retiree medical plan. Previously, a graded assumption was used that resulted in an assumption of 4.0% for the 2011.
In the second quarter 2012, the Company closed its domestic defined benefit pension plan to new entrants. Current plan participants will continue to accrue benefits under the existing formulas while new hires will be offered an enhanced defined contribution plan.
Assumptions for the defined benefit pension plans in Germany and England are determined separately from the U.S. plan assumptions, based on historical trends and current and projected market conditions in Germany and England. The plan in Germany is unfunded and the plan in England has assets that are approximately 4.0% of the Company’s aggregated total fair value of plan assets as of year-end 2013.
Assumed health care trend rates at fiscal year end		2013		2012
Health care trend rate assumed for next year		7.50%		8.00%
Rate that the trend rate gradually declines to (ultimate trend rate)		5.00%		5.00%
Year that the rate reaches the ultimate trend rate		2019		2019
Assumed health care cost trend rates have a significant effect on the amounts reported for the health care plans. A one-percentage-point change in assumed health care cost trend rates would have the following effects:
		1-Percentage-								1-Percentage-
		Point Increase								Point Decrease
(Thousands)		2013				2012				2013				2012
Effect on total of service and interest cost components		$	30			$	35			$	(26	)		$	(31	)
Effect on post-retirement benefit obligation		602				827				(567		)		(723		)
Plan Assets
The following tables present the fair values of the Company’s defined benefit pension plan assets as of December 31, 2013 and 2012 by asset category. See Note H to the Consolidated Financial Statements for definitions of fair value hierarchy.
		December 31, 2013
		Total				Level 1				Level 2				Level 3
(Thousands)
Cash		$	6,568			$	6,568			$	—			$	—
Equity securities:
U.S. (a)		63,321				54,095				9,226				—
International (b)		27,403				23,911				3,492				—
Emerging markets (c)		14,165				13,908				257				—
Fixed income securities:
Intermediate-term bonds (d)		21,874				14,482				7,392				—
Short-term bonds (e)		11,608				11,608				—				—
Global bonds (f)		12,728				10,879				1,849				—
Other types of investments:
Real estate fund (g)		9,943				9,882				61				—
Multi-strategy hedge funds (h)		5,467				—				—				5,467
Private equity funds		417				—				—				417
Total		$	173,494			$	145,333			$	22,277			$	5,884
		31-Dec-12
		Total				Level 1				Level 2				Level 3
(Thousands)
Cash		$	7,388			$	7,388			$	—			$	—
Equity securities:
U.S. (a)		54,691				45,025				9,666				—
International (b)		22,683				19,650				3,033				—
Emerging markets (c)		14,786				14,535				251				—
Fixed income securities:
Intermediate-term bonds (d)		26,749				18,378				8,371				—
Short-term bonds (e)		11,656				11,656				—				—
Global bonds (f)		12,854				11,185				1,669				—
Other types of investments:
Real estate fund (g)		7,793				7,768				25				—
Multi-strategy hedge funds (h)		4,191				—				—				4,191
Private equity funds		645				—				—				645
Total		$	163,436			$	135,585			$	23,015			$	4,836
(a)	Mutual funds that invest in various sectors of the U.S. market.
(b)	Mutual funds that invest in non-U.S. companies primarily in developed countries that are generally considered to be value stocks.
(c)	Mutual funds that invest in non-U.S. companies in emerging market countries.
(d)	Includes a mutual fund that employs a value-oriented approach to fixed income investment management and a mutual fund that invests primarily in investment-grade debt securities.
(e)	Includes a mutual fund that seeks a market rate of return for a fixed-income portfolio with low relative volatility of returns, investing generally in U.S. and foreign debt securities maturing in five years or less.
(f)	Mutual funds that invest in domestic and foreign sovereign securities, fixed income securities, mortgage-backed and asset-backed bonds, convertible bonds, high yield bonds and emerging market bonds.
(g)	Includes a mutual fund that typically invests at least 80% of its assets in equity and debt securities of companies in the real estate industry or related industries or in companies which own significant real estate assets at the time of investment.
(h)	Includes a hedge fund that employs multiple strategies to multiple asset classes with low correlations.
The following table summarizes changes in the fair value of the Company’s defined benefit pension plan Level 3 assets measured using significant unobservable inputs during 2013 and 2012:
(Thousands)		Multi-				Private				Total
		strategy				Equity
		Hedge Funds				Funds
Balance as of January 1, 2012		$	3,989			$	682			$	4,671
Actual return:
On assets still held at reporting date		386				17				403
On assets sold during the period		(57		)		4				(53		)
Purchases, sales and settlements		(127		)		(58		)		(185		)
Balance as of December 31, 2012		$	4,191			$	645			$	4,836
Actual return:
On assets still held at reporting date		1,276				(93		)		1,183
On assets sold during the period		—				229				229
Purchases, sales and settlements		—				(364		)		(364		)
Balance as of December 31, 2013		$	5,467			$	417			$	5,884
Capital may be withdrawn from the multi-strategy hedge fund partnership on a monthly basis with a ten day notice period.
The Company’s domestic defined benefit pension plan investment strategy, as approved by the Governance and Organization Committee of the Board of Directors, is to employ an allocation of investments that will generate returns equal to or better than the projected long-term growth of pension liabilities so that the plan will be self-funding. The return objective is to maximize investment return to achieve and maintain a 100% funded status over time, taking into consideration required cash contributions. The allocation of investments is designed to maximize the advantages of diversification while mitigating the risk and overall portfolio volatility to achieve the return objective. Risk is defined as the annual variability in value and is measured in terms of the standard deviation of investment return. Under the Company’s investment policies, allowable investments include domestic equities, international equities, fixed income securities, cash equivalents and alternative securities (which include real estate, private venture capital investments, hedge funds and tactical asset allocation). Ranges, in terms of a percentage of the total assets, are established for each allowable class of security. Derivatives may be used to hedge an existing security or as a risk reduction strategy. Current asset allocation guidelines are to invest 30% to 70% in equity securities, 20% to 50% in fixed income securities and cash and up to 20% in alternative securities. Management reviews the asset allocation on a quarterly or more frequent basis and makes revisions as deemed necessary.
None of the plan assets noted above are invested in the Company’s common stock.
Cash Flows
Employer Contributions
The Company expects to contribute $19.0 million to its domestic defined benefit pension plan and $2.7 million to its other benefit plans in 2014.
Estimated Future Benefit Payments
The following benefit payments, which reflect expected future service, as appropriate, are expected to be paid:
						Other Benefits
		Pension Benefits				Gross Benefit				Net of
						Payment				Medicare
										Part D
										Subsidy
(Thousands)
2014		$	10,280			$	2,663			$	2,322
2015		9,629				2,745				2,384
2016		10,201				2,789				2,410
2017		12,867				2,852				2,452
2018		11,518				2,883				2,457
2019 through 2023		71,293				13,270				10,677
Other Benefit Plans
In addition to the plans shown above, the Company also has certain foreign subsidiaries with accrued unfunded pension and other post-employment arrangements. The liability for these arrangements was $2.3 million at December 31, 2013 and $2.6 million at December 31, 2012 and was included in retirement and post-employment benefits on the Consolidated Balance Sheets.
The Company also sponsors defined contribution plans available to substantially all U.S. employees. The Company’s annual defined contribution expense, including the expense for the enhanced defined contribution plan that was implemented in the second quarter 2012, was $2.8 million in 2013, $2.5 million in 2012 and $2.2 million in 2011.

Contingencies_and_Commitments

Contingencies and Commitments	12 Months Ended
	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Contingencies and Commitments	'
	Contingencies and Commitments
	CBD Claims
	The Company is a defendant from time to time in proceedings in various state and federal courts brought by plaintiffs alleging that they have contracted chronic beryllium disease (CBD) or related ailments as a result of exposure to beryllium. Plaintiffs in CBD cases seek recovery under theories of negligence and various other legal theories and seek compensatory and punitive damages, in many cases of an unspecified sum. Spouses, if any, often claim loss of consortium.
	Employee cases, in which plaintiffs have a high burden of proof, have historically involved relatively small losses to the Company. Third-party plaintiffs (typically employees of customers) face a lower burden of proof than do the Company’s employees, but these cases have generally been covered by varying levels of insurance. Management has vigorously contested the CBD cases brought against the Company.
	Claims filed by third-party plaintiffs alleging CBD filed prior to the end of 2022 are covered by insurance if any portion of the alleged exposure period occurred prior to year-end 2007. Both defense and indemnity costs are covered subject to an annual $1.0 million deductible and other terms and provisions.
	There were two CBD cases outstanding as of year-end 2013 with a recorded reserve of $0.1 million. One of these cases was filed during 2013, while the other case was filed in 2012. There were no settlements paid or cases dismissed during 2013 or 2012. There were two active cases during 2011, both of which were filed prior to 2011. One of these cases was settled for less than $0.1 million while the other case was dismissed during 2011.
	Although it is not possible to predict the outcome of any pending litigation, the Company provides for costs related to litigation matters when a loss is probable and the amount is reasonably estimable. Litigation is subject to many uncertainties, and it is possible that some of the actions could be decided unfavorably in amounts exceeding the Company’s reserves. An unfavorable outcome or settlement of a CBD case or adverse media coverage could encourage the commencement of additional similar litigation. The Company is unable to estimate its potential exposure to unasserted claims.
	Based upon currently known facts and assuming collectibility of insurance, the Company does not believe that resolution of the current or future beryllium proceedings will have a material adverse effect on the financial condition or cash flow of the Company. However, the Company’s results of operations could be materially affected by unfavorable results in one or more cases.
	Insurance Recoverable
	After recording and investigating a $7.4 million inventory loss in the fourth quarter 2012, the Company filed a claim with its insurance provider under existing polices for theft. As of early in the first quarter 2014, the insurance company and the Company were still in discussions regarding the claim and no payment to the Company had been made. No benefit from an insurance recovery was recorded as of December 31, 2013 or 2012. The benefit of any insurance recoverable may be recorded in future periods based upon the ability to determine the amount of the recovery, an assessment of the probability of the recovery and other factors and/or in the period when the cash is received.
	Environmental Proceedings
	The Company has an active program for environmental compliance that includes the identification of environmental projects and estimating their impact on the Company’s financial performance and available resources. Environmental expenditures that relate to current operations, such as wastewater treatment and control of airborne emissions, are either expensed or capitalized as appropriate. The Company records reserves for the probable costs for identified environmental remediation projects. The Company’s environmental engineers perform routine ongoing analyses of the remediation sites and will use outside consultants to assist in their analyses from time to time. Accruals are based upon their analyses and are established at either the best estimate or, absent a best estimate, at the low end of the estimated range of costs. The accruals are revised for the results of ongoing studies, changes in strategies, inflation and for differences between actual and projected costs. The accruals may also be affected by rulings and negotiations with regulatory agencies. The timing of payments often lags the accrual, as environmental projects typically require a number of years to complete.
	The environmental reserves recorded represent the Company's best estimate of what is reasonably possible and cover existing or currently foreseen projects based upon the current facts and circumstances. The Company does not believe that it is reasonably possible that the cost to resolve environmental matters for sites where the investigative work and work plan development are substantially complete will be materially different than what has been accrued while the ultimate loss contingencies for sites that are in the preliminary stages of investigation cannot be reasonably determined at the present time. As facts and circumstances changes, the ultimate cost may be revised and the recording of additional costs may be material in the period in which the additional costs are accrued. The Company does not believe that the ultimate liability for environmental matters will have a material impact on its financial condition or liquidity due to the extended period of time during which environmental remediation normally takes place.
	The undiscounted reserve balance at the beginning of the year, the amounts expensed and paid and the balance at the end of the year for 2013 and 2012 are as follows:
	(Thousands)	2013			2012
	Reserve balance at beginning of year	$	(5,301	)	$	(5,312	)
	Expensed	(503		)	(316		)
	Paid	995			327
	Reserve balance at end of year	$	(4,809	)	$	(5,301	)
	Ending balance recorded in:
	Other liabilities and accrued items	$	(430	)	$	(903	)
	Other long-term liabilities	(4,379		)	(4,398		)
	The majority of spending in 2013 and 2012 was for various remediation projects at the Elmore, Ohio plant site with lesser amounts spent at other locations.
	Long-term Obligation
	The Company has a long-term supply agreement with Ulba/Kazatomprom of the Republic of Kazakhstan and its marketing representative, Nukem, Inc. (Nukem) of Connecticut, for the purchase of approximately 775,000 pounds of beryllium copper master alloy. The pricing for the beryllium content of the material is fixed while the price for the copper content fluctuates based upon the monthly average LME market price. The contract was completed prior to year-end 2013. Purchases made under this agreement totaled $1.8 million in 2013, $5.2 million in 2012 and $8.8 million in 2011. The material purchased from Nukem is used in the manufacture of beryllium-containing alloy products by the Performance Alloys segment.
	Other
	The Company is subject to various other legal or other proceedings that relate to the ordinary course of its business. The Company believes that the resolution of these proceedings, individually or in the aggregate, will not have a material adverse impact upon the Company’s consolidated financial statements.
	The Company has outstanding letters of credit totaling $27.3 million related to workers’ compensation, consigned precious metal guarantees, environmental remediation issues and other matters, the majority of which will expire in 2014.

Common_Stock_and_Stockbased_Co

Common Stock and Stock-based Compensation	12 Months Ended
	Dec. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Common Stock and Stock-based Compensation	'
	Common Stock and Stock-based Compensation
	A reconciliation of the changes in the number of common shares issued is as follows:
	(Thousands)
	Issued as of January 1, 2011	26,968
	Exercise of stock options and stock appreciation rights (SARs)	55
	Vesting of performance-restricted shares	1
	Issued as of December 31, 2011	27,024
	Exercise of stock options and SARs	26
	Issued as of December 31, 2012	27,050
	Exercise of stock options and SARs	114
	Issued as of December 31, 2013	27,164
	Stock incentive plans (the 2006 Stock Incentive Plan and the 2006 Non-employee Director Equity Plan) were approved at the May 2, 2006 annual meeting of shareholders. These plans authorize the granting of option rights, stock appreciation rights, performance-restricted shares, performance shares, performance units and restricted shares and replaced the 1995 Stock Incentive Plan and the 1997 Stock Incentive Plan for Non-employee Directors, although there are still options outstanding under these plans. The 2006 Stock Incentive Plan and the 2006 Non-employee Director Equity Plan were amended to, among other things, add additional shares to the plans. These amendments were approved by shareholders at the May 2011 annual meeting.
	Stock Options
	Stock options may be granted to employees or non-employee directors of the Company. Option rights entitle the optionee to purchase common shares at a price equal to or greater than the market value on the date of grant. Option rights granted to employees generally become exercisable (i.e., vest) over a four-year period and expire ten years from the date of the grant. Options granted to employees may also be issued with shorter vesting periods. Options granted to non-employee directors vest in six months and expire ten years from the date of the grant. The number of options available to be issued is established in plans approved by shareholders. The exercise of options is generally satisfied by the issuance of new shares.
	The following table summarizes the Company’s stock option activity during 2013:
	(Shares in thousands)	Number of		Weighted-				Aggregate		Weighted-
		Options		average				Intrinsic		average
				Exercise				Value		Remaining
				Price Per						Term (Years)
				Share
	Outstanding at December 31, 2012	96		$	15.98
	Exercised	(74	)	15.6
	Canceled	(1	)	10.3
	Outstanding at December 31, 2013	21		17.29				$	291,000	1
	Vested and expected to vest as of December 31, 2013	21		17.29				291,000		1
	Exercisable at December 31, 2013	21		17.29				291,000		1
	Summarized information on options outstanding as of December 31, 2013 is as follows:
	Range of Option Prices	Number		Weighted-		Weighted-
		Outstanding		average		average
		and Exercisable		Remaining		Exercise
		(Thousands)		Life (Years)		Price
	$14.80	2		1.3		$	14.8
	$17.08	4		0.1		17.08
	$17.68	15		1.1		17.68
	Total	21		0.9		$	17.29
	Cash received from the exercise of stock options totaled $1.2 million in 2013, $0.2 million in 2012 and $0.7 million in 2011. The benefit realized from tax deductions from exercises was $0.5 million in 2013, $0.1 million in 2012 and $0.5 million in 2011. The total intrinsic value of options exercised during the years ended December 31, 2013, 2012 and 2011 was $1.0 million, $0.3 million and $1.4 million, respectively.
	Restricted Stock
	The Company may grant restricted stock to employees and non-employee directors of the Company. These shares are restricted and vest over a designated period of time as defined at the date of the grant and are forfeited should the holder’s employment terminate during the restriction period. The fair market value of the restricted shares is determined on the date of the grant and is amortized over the restriction period. The restriction period is typically three years.
	The fair value of the restricted stock is based on the closing stock price on the date of grant. The weighted-average grant date fair value for 2013, 2012 and 2011 was $27.35, $27.87 and $39.18, respectively.
	Compensation cost was $2.5 million in 2013, $2.7 million in 2012 and $2.5 million in 2011. The unamortized compensation cost on the outstanding restricted stock was $2.4 million as of December 31, 2013 and is expected to be amortized over a weighted-average period of 18 months. The benefit realized from tax deductions from the vesting of restricted stock totaled $0.2 million in 2013, $0.7 million in 2012 and $0.2 million in 2011.
	The following table summarizes the restricted stock activity during 2013:
	(Shares in thousands)	Number of		Weighted-
		Shares		average
				Grant Date
				Fair Value
	Outstanding at December 31, 2012	223		$	30.18
	Granted	67		27.35
	Vested	(66	)	27.72
	Forfeited	(24	)	29.36
	Outstanding at December 31, 2013	200		$	32.71
	Long-term Incentive Plans
	Under long-term incentive compensation plans, executive officers and selected other employees receive cash or stock awards based upon the Company’s performance over the defined period, typically three years. Awards may vary based upon the degree to which actual performance exceeds the pre-determined threshold, target and maximum performance levels at the end of the performance periods. Payouts may be subjected to attainment of threshold performance objectives.
	Compensation expense is based upon the performance projections for the three-year plan period, the percentage of requisite service rendered and the fair market value of the Company’s common shares on the date of grant. The offset to the compensation expense for the portion of the award to be settled in shares is recorded within shareholders’ equity and was $0.8 million for 2013, $0.4 million for 2012 and zero for 2011.
	Directors Deferred Compensation
	Non-employee directors may defer all or part of their fees into the Company’s common shares. The fair value of the deferred shares is determined at the share acquisition date and is recorded within shareholders’ equity. Subsequent changes in the fair value of the Company’s common shares do not impact the recorded values of the shares.
	The following table summarizes the stock activity for the directors' deferred compensation plan during 2013:
	(Shares in thousands)	Number of		Weighted-
		Shares		average
				Grant  Date
				Fair Value
	Outstanding at December 31, 2012	103		$	22.28
	Granted	15		26.99
	Distributed	(17	)	20.32
Outstanding at December 31, 2013	101		$	23.74
There was no income or expense associated with this plan recorded in 2013, 2012 or 2011. During the years ended December 31, 2013, 2012 and 2011, the weighted-average grant date fair value of shares granted was $26.99, $23.10 and $38.00, respectively.
Stock Appreciation Rights
The Company may grant SARs to certain employees and non-employee directors. Upon exercise of vested SARs, the participant will receive a number of shares of common stock equal to the spread (the difference between the market price of the Company’s common shares at the time of the exercise and the strike price established in the SARs agreement) divided by the common share price. The strike price of the SARs is equal to or greater than the market value of the Company’s common shares on the day of the grant. The number of SARs available to be issued is established by plans approved by the shareholders. The vesting period and the life of the SARs are established in the SARs agreement at the time of the grant. The exercise of the SARs is satisfied by the issuance of treasury shares. The SARs vest three years from the date of grant. SARs granted prior to 2011 expire in ten years, while the SARs granted in 2011 and later expire in seven years.
The following table summarizes the Company's SARs activity during 2013:
(Shares in thousands)	Number of		Weighted-				Aggregate		Weighted-
	SARs		average				Intrinsic		average
			Exercise				Value		Remaining
			Price Per						Term (Years)
			Share
Outstanding at December 31, 2012	993		$	24.8
Granted	147		28.32
Exercised	(145	)	17.42
Cancelled	(11	)	31.9
Outstanding at December 31, 2013	984		26.34				$	6,211,000	5
Vested and expected to vest as of December 31, 2013	984		26.34				6,211,000		5
Exercisable at December 31, 2013	511		20.94				5,592,000		4.7
The weighted-average fair value of the SARs granted in 2013 was $12.54. The fair value will be amortized to compensation cost on a straight-line basis over the three-year vesting period. Compensation cost was $2.4 million, $2.8 million and $2.5 million in 2013, 2012 and 2011, respectively, and was included in selling, general and administrative expense. The unamortized compensation cost balance was $2.6 million as of December 31, 2013.
Summarized information on SARs outstanding as of December 31, 2013 follows:
SARs Prices	Number		Weighted-		Weighted-
	Outstanding		average		average
	(Thousands)		Remaining		Exercise
			Life (Years)		Price
$15.01	221		4.8		$	15.01
$21.24-$24.03	223		5		21.87
$27.78-$29.45	353		5.5		28.86
$34.30-$39.30	148		4.4		39.19
$44.72	39		3		44.72
	984		5		$	26.34
The SARs granted at $15.01, $24.03, $27.78 and $44.72 are exercisable.
The fair value of the SARs was estimated on the grant date using the Black-Scholes pricing model with the following assumptions:
	2013		2012			2011
Risk-free interest rate	0.7	%	0.89	%		0.03	%
Dividend yield	1.1	%	—	%		—	%
Volatility	56.6	%	50	%		58.7	%
Expected lives (in years)	5		5			6.5
The risk-free rate of return was based upon the five-year Treasury note rate at the time the SARs were granted. The Company initiated a dividend in May 2012, subsequent to the 2012 grant date. The share price volatility was calculated based upon the actual closing prices of the Company's common shares at month end over a period of approximately ten years prior to the granting of the SARs. This approach to measuring volatility is consistent with the approach used to calculate the volatility assumption in the valuation of stock options. The Company's current SARs program has been in place since 2006. The expected life assumption was based upon prior analyses.
Serial Preferred Stock
The Company has five million shares of Serial Preferred Stock authorized (no par value), none of which have been issued. Certain terms of the Serial Preferred Stock, including dividends, redemption and conversion, will be determined by the Board of Directors prior to issuance.

Accumulated_Other_Comprehensiv

Accumulated Other Comprehensive Income	12 Months Ended
	Dec. 31, 2013
Equity [Abstract]	'
Accumulated Other Comprehensive Income	'
	Accumulated Other Comprehensive Income
	Changes in the components of accumulated other comprehensive income, including amounts reclassified out, for 2013, 2012 and 2011 and the balances in accumulated other comprehensive income as of December 31, 2013, 2012 and 2011 are as follows:
		Gains and Losses									Pension and Post Employment Benefits			Foreign Currency Translation
		On Cash Flow Hedges
	(Thousands)	Foreign Currency			Precious Metals			Total									Total
	Accumulated other comprehensive income as of January 1, 2011
	Gross	$	(1,543	)	$	—		$	(1,543	)	$	(69,441	)	$	3,989		$	(66,995	)
	Deferred tax (benefit)	(1,942		)	—			(1,942		)	(13,437		)	—			(15,379		)
	Net	399			—			399			(56,004		)	3,989			(51,616		)
	2011 current year activity:
	Other comprehensive income (loss) before reclassifications	133			51			184			(39,344		)	958			(38,202		)
	Amounts reclassified from accumulated other comprehensive income	2,809			—			2,809			3,549			—			6,358
	Net current period other comprehensive income (loss)	2,942			51			2,993			(35,795		)	958			(31,844		)
	Deferred tax on current period activity	1,029			18			1,047			(12,292		)	—			(11,245		)
	Subtotal 2011 activity	1,913			33			1,946			(23,503		)	958			(20,599		)
	Accumulated other comprehensive income as of December 31, 2011
	Gross	1,399			51			1,450			(105,236		)	4,947			(98,839		)
	Deferred tax expense (benefit)	(913		)	18			(895		)	(25,729		)	—			(26,624		)
	Net	2,312			33			2,345			(79,507		)	4,947			(72,215		)
	2012 current year activity:
	Other comprehensive income (loss) before reclassifications	693			(552		)	141			(27,662		)	(870		)	(28,391		)
	Amounts reclassified from accumulated other comprehensive income	(1,839		)	598			(1,241		)	5,357			—			4,116
	Net current period other comprehensive income (loss)	(1,146		)	46			(1,100		)	(22,305		)	(870		)	(24,275		)
	Deferred taxes on current period activity	(401		)	16			(385		)	(7,676		)	—			(8,061		)
	Subtotal 2012 activity	(745		)	30			(715		)	(14,629		)	(870		)	(16,214		)
	Accumulated other comprehensive income as of December 31, 2012
	Gross	253			97			350			(127,541		)	(4,077		)	(123,114		)
	Deferred tax expense (benefit)	(1,314		)	34			(1,280		)	(33,405		)	—			(34,685		)
	Net	1,567			63			1,630			(94,136		)	(4,077		)	(88,429		)
	2013 current year activity:
	Other comprehensive income (loss) before reclassifications	618			4			622			42,553			(3,790		)	39,385
	Amounts reclassified from accumulated other comprehensive income	(958		)	(120		)	(1,078		)	7,687			—			6,609
	Net current period other comprehensive income (loss)	(340		)	(116		)	(456		)	50,240			(3,790		)	45,994
	Deferred taxes on current period activity	(119		)	(41		)	(160		)	17,613			—			17,453
	Subtotal 2013 activity	(221		)	(75		)	(296		)	32,627			(3,790		)	28,541
	Accumulated other comprehensive income as of December 31, 2013
	Gross	(87		)	(19		)	(106		)	(77,301		)	287			(77,120		)
	Deferred tax (benefit)	(1,433		)	(7		)	(1,440		)	(15,792		)	—			(17,232		)
	Net	$	1,346		$	(12	)	$	1,334		$	(61,509	)	$	287		$	(59,888	)
	Reclassifications from accumulated other comprehensive income of gains and losses on foreign currency cash flow hedges are recorded in other-net on the Consolidated Statement of Income while gains and losses on precious metal cash flow hedges are recorded in cost of sales on the Consolidated Statement of Income. See Note H to the Consolidated Financial Statements for additional details on cash flow hedges.
	Reclassifications from accumulated other comprehensive income for pension and post employment benefits are included in the computation of the net periodic pension and post employment benefit expense. See Note I to the Consolidated Financial Statements for additional details on pension and post employment expenses.

Segment_Reporting_and_Geograph

Segment Reporting and Geographic Information	12 Months Ended
	Dec. 31, 2013
Segment Reporting [Abstract]	'
Segment Reporting and Geographic Information	'
	Segment Reporting and Geographic Information
	(Thousands)	Advanced		Performance		Beryllium			Technical		Subtotal		All			Total
		Material		Alloys		and			Materials				Other
		Technologies				Composites
	2013
	Sales to external customers	$	744,240	$	292,189	$	61,338		$	69,115	$	1,166,882	$	—		$	1,166,882
	Intersegment sales	2,463		2,054		330			760		5,607		—			5,607
	Operating profit (loss)	4,661		23,384		(3,526		)	6,897		31,416		(4,585		)	26,831
	Depreciation, depletion and amortization	17,483		17,683		2,760			2,590		40,516		1,133			41,649
	Expenditures for long-lived assets	10,942		13,463		3,215			1,663		29,283		3,341			32,624
	Assets	306,291		264,521		142,390			21,795		734,997		42,948			777,945
	2012
	Sales to external customers	$	847,835	$	292,448	$	59,983		$	72,733	$	1,272,999	$	79		$	1,273,078
	Intersegment sales	2,556		2,718		740			672		6,686		—			6,686
	Operating profit (loss)	16,749		24,004		(3,944		)	6,608		43,417		(6,641		)	36,776
	Depreciation, depletion and amortization	16,282		14,994		1,883			2,609		35,768		1,278			37,046
	Expenditures for long-lived assets	11,874		19,906		7,962			3,604		43,346		1,315			44,661
	Assets	341,604		269,003		135,414			23,328		769,349		45,568			814,917
	2011
	Sales to external customers	$	1,051,823	$	335,323	$	60,557		$	78,732	$	1,526,435	$	295		$	1,526,730
	Intersegment sales	2,493		3,771		757			2,167		9,188		—			9,188
	Operating profit (loss)	33,471		27,241		(754		)	7,262		67,220		(10,142		)	57,078
	Depreciation, depletion and amortization	16,170		22,324		1,367			2,459		42,320		1,315			43,635
	Expenditures for long-lived assets	8,014		10,599		6,460			2,286		27,359		1,388			28,747
	Assets	342,819		235,547		127,708			21,502		727,576		44,527			772,103
	Intersegment sales are eliminated in consolidation. The sales to external customers are presented net of intersegment sales. Segments are evaluated at the operating profit level.
	The All Other column includes the parent company expenses, the operating results for Materion Services Inc., a wholly owned subsidiary, and other corporate charges. Materion Services Inc. provides administrative and financial services to the other businesses in the Company on a cost-plus basis.
	The assets shown in the All Other column include the assets used by Materion Services Inc. and the parent company as well as cash and long-term deferred income taxes.
	Other geographic information includes the following:
	(Thousands)	2013		2012		2011
	Sales from U.S. operations	$	962,288	$	1,064,779	$	1,306,192
	Sales based upon location of customers
	United States	$	810,642	$	881,968	$	1,143,720
	All other	356,240		391,110		383,010
	Total	$	1,166,882	$	1,273,078	$	1,526,730
	Long-lived assets by country deployed
	United States	$	340,922	$	354,122	$	349,988
	All other	33,972		36,042		32,441
	Total	$	374,894	$	390,164	$	382,429
	No individual country, other than the United States, or customer accounted for 10% or more of the Company’s sales for the years presented. Sales outside the United States are primarily to Asia and Europe.

Othernet

Other-net	12 Months Ended
	Dec. 31, 2013
Other-net [Abstract]	'
Other-net	'
	Other-net
	Other-net expense is summarized for 2013, 2012 and 2011 as follows:
		Income (Expense)
	(Thousands)	2013			2012			2011
	Foreign currency exchange/translation gain (loss)	$	1,506		$	1,477		$	(2,775	)
	Amortization of intangible assets	(5,529		)	(6,008		)	(6,144		)
	Metal consignment fees	(7,218		)	(9,011		)	(9,877		)
	Changes to earn-out valuation	—			—			1,052
	Net loss on disposal of fixed assets	(1,459		)	(1,836		)	—
	Consignment facility renegotiation bank fee	(853		)	—			—
	Other items	(909		)	(231		)	1,970
	Total	$	(14,462	)	$	(15,609	)	$	(15,774	)

Facility_Consolidation_Facilit

Facility Consolidation Facility Consolidation	12 Months Ended
	Dec. 31, 2013
Restructuring and Related Activities [Abstract]	'
Facility Consolidation	'
	Facility Consolidation
	During 2012, the Company announced a plan to consolidate various small facilities to improve efficiencies and reduce overhead costs in order to improve profitability and cash flows. As part of this program, two facilities were closed down with their operations transferred to other existing facilities (one in the fourth quarter 2012 and the other in the third quarter 2013), one operation was consolidated from four separate buildings into two in the fourth quarter 2013 and the majority of the equipment from a fourth operation was either transferred to another facility or written off. That fourth operation remained open as of December 31, 2013 to service one customer on a limited basis. The program also involved a reduction in the hourly workforce and management group at other facilities. All of the affected facilities and manpower reductions were within the Advanced Materials Technologies segment.
	Costs associated with the consolidation program included severance and related manpower costs, equipment write-downs, equipment relocations and other related costs. These costs were included in the Consolidated Statements of Income as follows:
	(Thousands)	2013		2012
	Cost of sales	$	1,812	$	1,559
	Selling, general and administrative expense	2,805		1,614
	Other-net	1,373		1,603
	Total	$	5,990	$	4,776
	Included in these costs are equipment write-offs of $1.2 million in 2013 and $1.6 million in 2012 that resulted from the abandonment of equipment with no realizable value.
	An accrual totaling $2.0 million, primarily for severance and other manpower costs associated with this program, was recorded on the Company's balance sheet as of December 31, 2013. The facility consolidations were substantially complete as of December 31, 2013 and the Company anticipates spending an additional $0.5 million in 2014 on this program.

Interest

Interest	12 Months Ended
	Dec. 31, 2013
Interest [Abstract]	'
Interest	'
	Interest
	The following chart summarizes the interest incurred, capitalized and paid, as well as the amortization of capitalized interest for 2013, 2012 and 2011:
	(Thousands)	2013		2012		2011
	Interest incurred	$	3,286	$	3,334	$	2,860
	Less capitalized interest	250		200		48
	Total net expense	$	3,036	$	3,134	$	2,812
	Interest paid	$	2,671	$	2,639	$	2,211
	Amortization of capitalized interest included in cost of sales	$	265	$	336	$	441
	The difference in expense among 2013, 2012 and 2011 was primarily due to changes in the level of outstanding debt and capital leases and the average borrowing rate. Amortization of deferred financing costs within interest expense was $0.7 million in 2013, $0.6 million in 2012 and $0.6 million in 2011.

Income_Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	Income Taxes
	Income before income taxes and income taxes (benefit) are comprised of the following:
	(Thousands)	2013				2012				2011
	Income before income taxes:
	Domestic	$	16,528			$	23,379			$	53,648
	Foreign	7,267				10,263				618
	Total income before income taxes	$	23,795			$	33,642			$	54,266
	Income taxes:
	Current income taxes:
	Domestic	$	4,325			$	7,825			$	15,487
	Foreign	2,205				3,615				468
	Total current	$	6,530			$	11,440			$	15,955
	Deferred income taxes (benefit):
	Domestic	$	(2,958	)		$	(3,084	)		$	(2,710	)
	Foreign	319				(44		)		(351		)
	Valuation allowance	197				666				1,393
	Total deferred	$	(2,442	)		$	(2,462	)		$	(1,668	)
	Total income taxes	$	4,088			$	8,978			$	14,287
	The reconciliation of the federal statutory and effective income tax rates follows:
		2013			2012			2011
	Federal statutory rate	35	%		35	%		35	%
	State and local income taxes, net of federal tax effect	(0.8	)		(0.3	)		0.7
	Effect of excess of percentage depletion over cost depletion	(11.8	)		(7.3	)		(3.9	)
	Manufacturing production deduction	(2.4	)		(2.2	)		(3.5	)
	Officers’ compensation	0.4			1.1			0.7
	Adjustment to unrecognized tax benefits	0.3			(0.6	)		(3.4	)
	Foreign rate differential	(0.1	)		(0.1	)		(0.2	)
	Research and experimentation tax credit	(7.4	)		—			(1.0	)
	Retiree medical expense	—			(2.0	)		—
	Valuation allowance	0.8			2			2.5
	Other items	3.2			1.1			(0.6	)
	Effective tax rate	17.2	%		26.7	%		26.3	%
	Included in domestic income taxes, as shown in the Consolidated Statements of Income, are $(0.2) million, $(0.1) million and $0.6 million of state and local income taxes in 2013, 2012 and 2011, respectively.
	The Company had domestic and foreign income tax payments of $8.2 million, $13.2 million and $20.7 million in 2013, 2012 and 2011, respectively.
	Deferred tax assets and liabilities are determined based on temporary differences between the financial reporting bases and the tax bases of assets and liabilities. Deferred tax assets and (liabilities) recorded in the Consolidated Balance Sheets consist of the following:
		December 31,
	(Thousands)	2013				2012
	Asset (liability)
	Post-retirement benefits other than pensions	$	10,989			$	12,003
	Other reserves	13,744				12,804
	Environmental reserves	1,789				1,958
	Inventory	3,934				4,303
	Pensions	9,867				27,547
	Net operating loss and credit carryforwards	5,588				5,186
	Miscellaneous	303				357
	Subtotal	46,214				64,158
	Valuation allowance	(4,782		)		(4,584		)
	Total deferred tax assets	41,432				59,574
	Depreciation	(18,669		)		(19,388		)
	Amortization	(7,371		)		(7,939		)
	Capitalized interest expense	(184		)		(195		)
	Mine development	(2,309		)		(2,832		)
	Derivative instruments and hedging activities	(130		)		(168		)
	Total deferred tax liabilities	(28,663		)		(30,522		)
	Net deferred tax asset	$	12,769			$	29,052
	The Company had deferred income tax assets offset with a valuation allowance for state and foreign net operating losses and state investment tax credit carryforwards. The Company intends to maintain a valuation allowance on these deferred tax assets until a realization event occurs to support reversal of all or a portion of the allowance.
	At December 31, 2013, for income tax purposes, the Company had foreign net operating loss carryforwards of $4.9 million that do not expire, and $10.5 million that expire in calendar years 2014 through 2022. The Company had state net operating loss carryforwards of $23.6 million that expire in calendar years 2017 through 2033. The Company had state tax credits of $2.7 million that expire in calendar years 2014 through 2027.
	The Company files income tax returns in the U.S. federal jurisdiction, and in various state, local and foreign jurisdictions. With limited exceptions, the Company is no longer subject to U.S. federal examinations for years before 2010, state and local examinations for years before 2009, and foreign examinations for tax years before 2007. The Company is not presently under examination for its income tax filings.
	A reconciliation of the Company’s unrecognized tax benefits for the year-to-date periods ending December 31, 2013 and 2012 is as follows:
	(Thousands)	2013				2012
	Balance as of January 1	$	1,767			$	1,969
	Additions to tax provisions related to the current year	—				149
	Additions to tax positions related to prior years	484				174
Reduction to tax positions related to prior years	(17		)		(20		)
Lapses on statutes of limitations	(555		)		(455		)
Settlements	—				(50		)
Balance as of December 31	$	1,679			$	1,767
At December 31, 2013, the Company had $1.7 million of unrecognized tax benefits, of which $0.8 million would affect the Company’s effective tax rate if recognized.
The Company classifies all interest and penalties as income tax expense. The amount of interest and penalties, net of related federal tax benefit, recognized in earnings was immaterial during 2013 and 2012. As of December 31, 2013 and 2012, accrued interest and penalties, net of related federal tax benefit, were immaterial.
A provision has not been made with respect to $49.0 million of unremitted earnings at December 31, 2013 because such earnings may be considered to be reinvested indefinitely. It is not practical to estimate the amount of unrecognized deferred tax liability for undistributed foreign earnings.

Earnings_Per_Share

Earnings Per Share	12 Months Ended
	Dec. 31, 2013
Earnings Per Share [Abstract]	'
Earnings Per Share	'
	Earnings Per Share
	The following table sets forth the computation of basic and diluted EPS:
	(Thousands except per share amounts)	2013		2012		2011
	Numerator for basic and diluted EPS:
	Net income	$	19,707	$	24,664	$	39,979
	Denominator:
	Denominator for basic EPS:
	Weighted-average shares outstanding	20,571		20,418		20,365
	Effect of dilutive securities:
	Stock options and stock appreciation rights	188		163		237
	Restricted stock	101		94		152
	Performance-based restricted shares	35		4		—
	Diluted potential common shares	324		261		389
	Denominator for diluted EPS:
	Adjusted weighted-average shares outstanding	20,895		20,679		20,754
	Basic EPS	$	0.96	$	1.21	$	1.96
	Diluted EPS	$	0.94	$	1.19	$	1.93
	SARs with grants in excess of the average annual share price totaling 368,000 in 2013, 465,000 in 2012 and 152,000 in 2011 were excluded from the diluted EPS calculation as their effect would have been anti-dilutive.

Quarterly_Data_Unaudited

Quarterly Data (Unaudited)	12 Months Ended
	Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract]	'
Quarterly Data (Unaudited)	'
	Quarterly Data (Unaudited)
	The following tables summarize selected quarterly financial data for the years ended December 31, 2013 and 2012:
		2013
	(Dollars in thousands except per share amounts)	First			Second			Third			Fourth			Total
		Quarter			Quarter			Quarter			Quarter
	Net sales	$	299,169		$	306,141		$	275,434		$	286,138		$	1,166,882
	Gross margin	48,339			45,992			44,483			49,164			187,978
	Percent of sales	16.2		%	15		%	16.2		%	17.2		%	16.1		%
	Net income	$	6,785		$	4,155		$	4,992		$	3,775		$	19,707
	Net income per share of common stock:
	Basic	0.33			0.2			0.24			0.18			0.96
	Diluted	0.33			0.2			0.24			0.18			0.94
	Cash dividends per share of common stock	0.075			0.08			0.08			0.08			0.315
	Stock price range:
	High	29.81			31.49			33.69			32.73
	Low	26.2			24.58			27.09			25.75
		2012
		First			Second			Third			Fourth			Total
		Quarter			Quarter			Quarter			Quarter
	Net sales	$	353,630		$	325,088		$	290,601		$	303,759		$	1,273,078
	Gross margin	49,418			53,024			52,369			43,972			198,783
	Percent of sales	14		%	16.3		%	18		%	14.5		%	15.6		%
	Net income	$	6,118		$	7,929		$	8,114		$	2,503		$	24,664
	Net income per share of common stock:
	Basic	0.3			0.39			0.4			0.12			1.21
	Diluted	0.3			0.38			0.39			0.12			1.19
	Cash dividends per share of common stock	—			0.075			0.075			0.075			0.225
	Stock price range:
	High	32.91			29.37			25.57			25.93
	Low	24.77			20.37			17.59			18.84
	During the fourth quarter 2013, the Company determined that there were procedural errors made during the reconciliation of the physical inventory counts taken and recorded at one of its facilities within the Advanced Material Technologies reporting segment during the second and third quarters of 2013 that were not detected by the management review process on a timely basis. The Company, after determining that these errors were material to the applicable quarterly financial results, filed amended Quarterly Reports on Form 10-Q in March 2014 with corrected financial statements for the periods ended June 28, 2013 and September 27, 2013.
	The corrections reduced the previously reported gross margin in the second quarter 2013 by $6.8 million and net income by $4.8 million, or $0.23 per share diluted. The corrections reduced the previously reported gross margin by $0.7 million in the third quarter 2013. Net income was reduced by $0.1 million and earnings per share was reduced by a nominal amount in the third quarter 2013. The figures in the above table represent the corrected amounts for each quarter.
	The Company recorded a $7.4 million pre-tax expense in the fourth quarter 2012 for a net inventory loss. A portion of this expense may have been applicable to the third quarter 2012. Any insurance recoveries will be recorded in the future as they become probable and estimable.

Valuation_And_Qualifying_Accou

Valuation And Qualifying Accounts	12 Months Ended
	Dec. 31, 2013
Valuation and Qualifying Accounts [Abstract]	'
Valuation and Qualifying Accounts	'
	Materion Corporation and Subsidiaries
	Schedule II—Valuation and Qualifying Accounts
	Years Ended December 31, 2013, 2012 and 2011
	COL. A	COL. B		COL. C						COL. D			COL. E
	(Thousands)	Balance at Beginning of Period		ADDITIONS						Deduction-			Balance at End
				-1		-2				Describe			of Period
				Charged to  Costs		Charged to  Other
				and Expenses		Accounts-Describe
	Year ended December 31, 2013
	Deducted from asset accounts:
	Allowance for doubtful accounts receivable	$	1,403	$	127	$	(12	)		$	97	(A)	$	1,421
	Inventory reserves and obsolescence	5,872		5,250		—				4,789		(B)	6,333
	Year ended December 31, 2012
	Deducted from asset accounts:
	Allowance for doubtful accounts receivable	1,490		560		(305		)		342		(A)	1,403
	Inventory reserves and obsolescence	6,336		3,935		—				4,399		(B)	5,872
	Year ended December 31, 2011
	Deducted from asset accounts:
	Allowance for doubtful accounts receivable	1,452		285		—				247		(A)	1,490
	Inventory reserves and obsolescence	4,607		878		1,332			(C)	481		(B)	6,336
	Note (A) - Bad debts written-off, net of recoveries
	Note (B) - Inventory write-off
	Note (C) - Beginning balance from acquisition

Significant_Accounting_Policie1

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Organization	'
	Organization:  The Company is a holding company with subsidiaries that have operations in the United States, Europe and Asia. These operations manufacture advanced engineered materials used in a variety of markets, including consumer electronics, defense and science, industrial components and commercial aerospace, automotive electronics, telecommunications infrastructure, energy, medical and appliance. The Company has four reportable segments:
	Advanced Material Technologies manufactures precious and non-precious vapor deposition targets, frame lid assemblies, advanced chemicals, performance coatings, optics, microelectronic packages, other precious and non-precious metal products and specialty inorganic materials;
	Performance Alloys manufactures high precision strip and bulk products from copper and nickel-based alloys;
	Beryllium and Composites produces beryllium metal, beryllium and non-beryllium metal matrix composites and beryllia ceramics in a variety of forms; and
	Technical Materials manufactures clad inlay and overlay metals, precious and base metal electroplated systems and other related products.
	See Note M to the Consolidated Financial Statements for additional segment details. The Company is vertically integrated and distributes its products through a combination of company-owned facilities and independent distributors and agents.
Use of Estimates	'
	Use of Estimates:    The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results may differ from those estimates.
Consolidation	'
	Consolidation:    The Consolidated Financial Statements include the accounts of Materion Corporation and its subsidiaries. All of the Company’s subsidiaries are wholly owned as of December 31, 2013. Intercompany accounts and transactions are eliminated in consolidation.
Cash Equivalents	'
	Cash Equivalents:    All highly liquid investments with a maturity of three months or less when purchased are considered to be cash equivalents.
Accounts Receivable	'
	Accounts Receivable:    An allowance for doubtful accounts is maintained for the estimated losses resulting from the inability of customers to pay the amounts due. The allowance is based upon identified delinquent accounts, customer payment patterns and other analyses of historical data and trends. The Company extends credit to customers based upon their financial condition and generally collateral is not required.
Inventories	'
	Inventories:    Inventories are stated at the lower of cost or market. The cost of the majority of domestic inventories is determined using the last-in, first-out (LIFO) method. The remaining inventories are stated principally at average cost.
Property, Plant and Equipment	'
	Property, Plant and Equipment:    Property, plant and equipment is stated on the basis of cost. Depreciation is computed principally by the straight-line method, except certain assets for which depreciation may be computed by the units-of-production or the sum-of-the-years-digit method. The depreciable lives that are used in computing the annual provision for depreciation by class of asset are as follows:
		Years
	Land improvements	5 to 25
	Buildings	10 to 40
	Leasehold improvements	Life of lease
	Machinery and equipment	3 to 15
	Furniture and fixtures	4 to 15
	Automobiles and trucks	2 to 8
	Research equipment	6 to 12
	Computer hardware	3 to 10
	Computer software	3 to 10
	An asset acquired under a capital lease will be recorded at the lesser of the present value of the projected lease payments or the fair value of the asset and will be depreciated in accordance with the above schedule. Leasehold improvements will be depreciated over the life of the improvement if it is shorter than the life of the lease. Repair and maintenance costs are expensed as incurred.
Mineral Resources and Mine Development	'
	Mineral Resources and Mine Development:    Property acquisition costs are capitalized as mineral resources on the balance sheet and are depleted using the units-of-production method based upon recoverable proven reserves. Mine development costs are capitalized once mineralization has been classified as proven or probable reserves. Drilling and related costs are capitalized for an ore body where proven and probable reserves exist if those activities are directed at obtaining additional information about the ore body or convert mineralized materials into proven or probable reserves. Drilling costs incurred during the production phase are allocated to inventory. The cost of removing overburden and waste materials to access the ore body in an open pit are capitalized and amortized as the ore is extracted using the units-of-production method based upon the proven reserves in that particular pit. Costs incurred to access specific ore blocks or areas that only provide benefit over the life of that area are amortized over the estimated life of that specific ore block area.
Goodwill and Other Intangible Assets	'
	Goodwill and Other Intangible Assets:    Goodwill is not amortized, but instead reviewed annually as of December 31 of each year, or more frequently under certain circumstances, for impairment. Goodwill is assigned to the reporting unit, which is the operating segment level or one level below the operating segment. Intangible assets with finite lives are amortized using the straight-line method or effective interest method, as applicable, over the periods estimated to be benefited, which is generally twenty years or less. Finite-lived intangible assets are also reviewed for impairment if facts and circumstances warrant.
Asset Impairment	'
	Asset Impairment:    In the event that facts and circumstances indicate that the carrying value of long-lived assets may be impaired, an evaluation of recoverability is performed by comparing the carrying value of the assets to the associated estimated future undiscounted cash flow. If the carrying value exceeds that cash flow, then the assets are written down to their fair values.
Derivatives	'
	Derivatives:    The Company recognizes all derivatives on the balance sheet at their fair values. If the derivative is designated and effective as a cash flow hedge, changes in the fair value of the derivative are recognized in other comprehensive income (loss), a component of shareholders’ equity, until the hedged item is recognized in earnings. If the derivative is designated as a fair value hedge, changes in its value are offset against the change in the value of the hedged asset, liability or commitment through earnings. The ineffective portion of a derivative’s change in fair value, if any, is recognized in earnings immediately. If a derivative is not a hedge, changes in its fair value are adjusted through income.
Asset Retirement Obligation	'
	Asset Retirement Obligation:    The Company records a liability to recognize the legal obligation to remove an asset at the time the asset is acquired or when the legal liability arises. The liability is recorded for the present value of the ultimate obligation by discounting the estimated future cash flows using a credit-adjusted risk-free interest rate. The liability is accreted over time, with the accretion charged to expense. An asset equal to the fair value of the liability is recorded concurrent with the liability and depreciated over the life of the underlying asset.
Unearned Income	'
	Unearned Income:    Expenditures for capital equipment to be reimbursed under government contracts are recorded in construction in process while the reimbursements for those expenditures are recorded in unearned income, a liability on the balance sheet. When the assets subject to reimbursement are placed in service, their total cost is depreciated over their useful lives and the unearned income liability is reduced and credited to cost of sales on the Consolidated Statements of Income ratably with the annual depreciation expense. Depreciation and amortization expense on the Consolidated Statement of Cash Flows is shown net of the associated current period reduction in the unearned income liability.
Revenue Recognition	'
	Revenue Recognition:    The Company generally recognizes revenue when the goods are shipped and title passes to the customer. The Company requires persuasive evidence that a revenue arrangement exists, delivery of the product has occurred, the selling price is fixed or determinable and collectibility is reasonably assured before revenue is realized and earned. Billings in advance of the shipment of the goods are recorded as unearned revenue, which is a liability on the balance sheet. Revenue is recognized for these transactions when the goods are shipped and all other revenue recognition criteria are met.
Shipping and Handling Costs	'
	Shipping and Handling Costs:    The Company records shipping and handling costs for products sold to customers in cost of sales on the Consolidated Statements of Income.
Advertising Costs	'
	Advertising Costs:    The Company expenses all advertising costs as incurred.
Stock-based Compensation	'
	Stock-based Compensation:    All stock-based compensation instruments, including options, stock appreciation rights, restricted stock and performance restricted stock, are viewed collectively when determining the accounting treatment of the tax considerations upon the realization of the benefit by the recipient.
Capitalized Interest	'
	Capitalized Interest: Interest expense associated with active capital asset construction and mine development projects is capitalized and amortized over the future useful lives of the related assets.
Income Taxes	'
	Income Taxes:    The Company uses the liability method in measuring the provision for income taxes and recognizing deferred tax assets and liabilities on the balance sheet. The Company will record a valuation allowance to reduce the deferred tax assets to the amount that is more likely than not to be realized, as warranted by the facts and circumstances. The Company applies a more-likely-than-not recognition threshold for all tax uncertainties and will record a liability for those tax benefits that have a less than 50% likelihood of being sustained upon examination by the taxing authorities.
Net Income Per Share	'
	Net Income Per Share:    Basic earnings per share (EPS) is computed by dividing income available to common stockholders by the weighted-average number of common shares outstanding for the period. Diluted EPS reflects the assumed conversion of all dilutive common stock equivalents as appropriate under the treasury stock method.
Reclassification	'
	Reclassification:    Certain amounts in prior years have been reclassified to conform to the 2013 consolidated financial statement presentation.
New Pronouncements	'
	New Pronouncements:    In 2011, the Financial Accounting Standards Board (FASB) issued two Accounting Standards Updates (ASU) which amended guidance for the presentation of comprehensive income. The amended guidance requires an entity to present components of net income and other comprehensive income in one continuous statement, referred to as the statement of comprehensive income, or in two separate, but consecutive statements. The current option to report other comprehensive income and its components in the statement of stockholders’ equity was eliminated. Although the new guidance changes the presentation of comprehensive income, there were no changes to the components that are recognized in net income or other comprehensive income under existing guidance. The ASU is effective for interim and annual periods beginning after December 15, 2011 and retrospective application is required. The Company adopted these ASUs beginning with its disclosures for the first quarter 2012.
	In February 2013, the FASB issued guidance that requires an entity to disclose information showing the effect of the items reclassified from accumulated other comprehensive income on the line items of net income. The provisions of this new guidance were effective prospectively as of the beginning of our 2013 fiscal year. Accordingly, an enhanced footnote disclosure for the year ended December 31, 2013 was included.
	In July 2013, the Financial Accounting Standards Board (FASB) issued new accounting guidance that requires an entity to net its liability for unrecognized tax positions against a net operating loss carryforward, a similar tax loss or a tax credit carryforward when settlement in this manner is available under the tax law. The provisions of this new guidance are effective as of the beginning of 2014. Adoption of this new guidance is not expected to have a material impact on the financial statements.

Significant_Accounting_Policie2

Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Summary of depreciable lives by class of assets	'
	The depreciable lives that are used in computing the annual provision for depreciation by class of asset are as follows:
		Years
	Land improvements	5 to 25
	Buildings	10 to 40
	Leasehold improvements	Life of lease
	Machinery and equipment	3 to 15
	Furniture and fixtures	4 to 15
	Automobiles and trucks	2 to 8
	Research equipment	6 to 12
	Computer hardware	3 to 10
	Computer software	3 to 10

Inventories_Tables

Inventories (Tables)	12 Months Ended
	Dec. 31, 2013
Inventory Disclosure [Abstract]	'
Summary of Inventories	'
	Inventories on the Consolidated Balance Sheets are summarized as follows:
		December 31,
	(Thousands)	2013		2012
	Principally average cost:
	Raw materials and supplies	$	42,352	$	42,751
	Work in process	203,107		203,179
	Finished goods	45,503		51,094
	Gross inventories	290,962		297,024
	Excess of average cost over LIFO inventory value	77,570		90,899
	Net inventories	$	213,392	$	206,125

Property_Plant_and_Equipment_T

Property, Plant and Equipment (Tables)	12 Months Ended
	Dec. 31, 2013
Property, Plant and Equipment [Abstract]	'
Summary of Property, Plant and Equipment	'
	Property, plant and equipment on the Consolidated Balance Sheets is summarized as follows:
		December 31,
	(Thousands)	2013			2012
	Land	$	8,097		$	8,797
	Buildings	128,187			127,691
	Machinery and equipment	569,617			570,001
	Software	31,571			31,640
	Construction in progress	14,363			15,389
	Allowances for depreciation	(510,718		)	(503,560		)
	Subtotal	241,117			249,956
	Capital leases	10,912			10,912
	Allowances for amortization	(1,728		)	(1,440		)
	Subtotal	9,184			9,472
	Mineral resources	4,979			4,979
	Mine development	15,153			10,377
	Allowances for amortization and depletion	(8,540		)	(2,243		)
	Subtotal	11,592			13,113
	Property, plant and equipment — net	$	261,893		$	272,542

Intangible_Assets_Tables

Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]	'
Summary of cost, accumulated amortization and net book value of intangible assets	'
	The cost, accumulated amortization and net book value of intangible assets subject to amortization as of December 31, 2013 and 2012 and the aggregate amortization expense for each year then ended is as follows:
	(Thousands)	2013			2012
	Deferred financing costs
	Cost	$	7,794		$	6,427
	Accumulated amortization	(4,507		)	(4,048		)
	Net book value	3,287			2,379
	Customer relationships
	Cost	38,427			38,427
	Accumulated amortization	(22,624		)	(18,703		)
	Net book value	15,803			19,724
	Technology
	Cost	12,092			12,092
	Accumulated amortization	(7,626		)	(6,538		)
	Net book value	4,466			5,554
	License
	Cost	2,480			2,480
	Accumulated amortization	(1,828		)	(1,340		)
	Net book value	652			1,140
	Non-compete contracts
	Cost	550			550
	Accumulated amortization	(550		)	(530		)
	Net book value	—			20
	Trade Name
	Cost	62			62
	Accumulated amortization	(22		)	(10		)
	Net book value	40			52
	Total
	Cost	$	61,405		$	60,038
	Accumulated amortization	(37,157		)	(31,169		)
	Net book value	$	24,248		$	28,869
	Aggregate amortization expense	$	6,208		$	6,657
Summary of reconciliation of goodwill	'
	The Company’s only intangible asset not subject to amortization is goodwill. A reconciliation of the goodwill activity for 2013 and 2012 is as follows:
	(Thousands)	2013			2012
	Balance at the beginning of the year	$	88,753		$	84,036
	Current year additions	—			4,717
	Balance at the end of the year	$	88,753		$	88,753

Debt_Tables

Debt (Tables)	12 Months Ended
	Dec. 31, 2013
Debt Disclosure [Abstract]	'
Summary of long-term debt	'
	Long-term debt on the Consolidated Balance Sheets is summarized as follows:
			December 31,
	(Thousands)		2013			2012
	Revolving credit agreement		$	15,000		$	30,000
	Fixed rate industrial development revenue bonds payable in annual installments through 2021		6,575			7,158
	Variable rate industrial development revenue bonds payable in 2016		8,305			8,305
	Total outstanding		29,880			45,463
	Current portion of long-term debt		(613		)	(583		)
	Total		$	29,267		$	44,880
Maturities on long-term debt instruments	'
	Maturities on long-term debt instruments as of December 31, 2013 are as follows:
	2014	$	613
	2015	653
	2016	9,000
	2017	733
	2018	15,773
	Thereafter	3,108
	Total	$	29,880
Summary of short-term lines of credit	'
	The following table summarizes the Company’s short-term lines of credit. Amounts shown as outstanding are included in short-term debt on the Consolidated Balance Sheets.
			December 31, 2013								December 31, 2012
	(Thousands)		Total			Outstanding			Available		Total		Outstanding		Available
	Domestic		$	320,510		$	6,291		$	314,219	$	256,799	$	8,000	$	248,799
	Foreign		13,320			—			13,320		15,266		1,415		13,851
	Precious metal		28,662			28,662			—		39,435		39,435		—
	Total		$	362,492		$	34,953		$	327,539	$	311,500	$	48,850	$	262,650

Leasing_Arrangements_Tables

Leasing Arrangements (Tables)	12 Months Ended
	Dec. 31, 2013
Leases [Abstract]	'
Future estimated minimum payments under capital leases and non-cancelable operating leases	'
	The future estimated minimum payments under capital leases and non-cancelable operating leases with initial lease terms in excess of one year at December 31, 2013, are as follows:
		Capital		Operating
	(Thousands)	Leases		Leases
	2014	$	1,076	$	6,931
	2015	1,069		6,227
	2016	1,064		5,257
	2017	1,064		4,032
	2018	1,064		3,436
	2019 and thereafter	4,701		12,110
	Total minimum lease payments	10,038		$	37,993
	Amounts representing interest	2,151
	Present value of net minimum lease payments	$	7,887

Fair_Value_Information_and_Der1

Fair Value Information and Derivative Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2013
Fair Value Information and Derivative Financial Instruments [Abstract]	'
Summary of fair value information and derivative financial instruments	'
	The following table summarizes the financial instruments measured at fair value in the Consolidated Balance Sheet as of December 31, 2013:
				Fair Value Measurements
	(Thousands)	Total		Quoted Prices			Significant		Other
				in Active			Observable		Significant
				Markets for			Inputs		Unobservable
				Identical			(Level 2)		Inputs
				Assets					(Level 3)
				(Level 1)
	Financial Assets
	Directors’ deferred compensation investments	$	535	$	535		$	—	$	—
	Precious metal forward contracts	11		—			11		—
	Foreign currency forward contracts	292		—			292		—
	Total	$	838	$	535		$	303	$	—
	Financial Liabilities
	Directors’ deferred compensation liability	$	535	$	535		$	—	$	—
	Precious metal swaps	30		—			30		—
	Foreign currency forward contracts	379		—			379		—
	Total	$	944	$	535		$	409	$	—
Summary of the notional amount and the fair value of the Company's outstanding derivatives	'
	The following table summarizes the notional amount and the fair value of the Company’s outstanding derivatives and their balance sheet classification as of December 31, 2013 and 2012:
		31-Dec-13					31-Dec-12
	(Thousands)	Notional		Fair			Notional		Fair
		Amount		Value			Amount		Value
	Prepaid expenses
	Foreign currency forward contracts - yen	$	4,951	$	292		$	8,024	$	650
	Precious metal forward contracts	5,663		11			14,623		197
	Total	10,614		303			22,647		847
	Other liabilities and accrued items
	Foreign currency forward contracts - euro	25,112		(364		)	21,047		(397		)
	Precious metal swaps	4,511		(30		)	11,673		(100		)
	Total	29,623		(394		)	32,720		(497		)
	Other long-term liabilities
	Foreign currency forward contracts - euro	952		(15		)	—		—
	Total	$	41,189	$	(106	)	$	55,367	$	350

Pensions_and_Other_Postretirem1

Pensions and Other Post-retirement Benefits (Tables)	12 Months Ended
	Dec. 31, 2013
Compensation and Retirement Disclosure [Abstract]	'
Obligation and funded status of the company's pension and other post-retirement benefit plans	'
	The obligation and funded status of the Company’s pension and other post-retirement benefit plans are shown below. The Pension Benefits column aggregates defined benefit pension plans in the U.S., Germany and England and the U.S. supplemental retirement plans. The Other Benefits column includes the domestic retiree medical and life insurance plan.
			Pension Benefits								Other Benefits
	(Thousands)		2013				2012				2013				2012
	Change in benefit obligation
	Benefit obligation at beginning of year		$	253,839			$	210,996			$	34,294			$	33,209
	Service cost		9,724				7,915				305				285
	Interest cost		9,936				9,912				1,243				1,439
	Plan amendments		—				117				—				—
	Actuarial (gain) loss		(28,581		)		32,595				(2,396		)		1,493
	Benefit payments from fund		(22,893		)		(7,523		)		—				—
	Benefit payments directly by Company		(136		)		(129		)		(2,271		)		(2,431		)
	Expenses paid from assets		(613		)		(293		)		—				—
	Medicare Part D subsidy		—				—				223				299
	Foreign currency exchange rate changes		472				249				—				—
	Benefit obligation at end of year		221,748				253,839				31,398				34,294
	Change in plan assets
	Fair value of plan assets at beginning of year		163,436				140,344				—				—
	Actual return on plan assets		23,824				18,534				—				—
	Employer contributions		9,615				12,218				—				—
	Benefit payments from fund		(22,893		)		(7,523		)		—				—
	Expenses paid from assets		(613		)		(293		)		—				—
	Foreign currency exchange rate changes		125				156				—				—
	Fair value of plan assets at end of year		173,494				163,436				—				—
	Funded status at end of year		$	(48,254	)		$	(90,403	)		$	(31,398	)		$	(34,294	)
	Amounts recognized in the Consolidated
	Balance Sheets consist of:
	Other assets		$	1,321			$	1,112			$	—			$	—
	Other liabilities and accrued items		(1,138		)		(475		)		(2,663		)		(2,663		)
	Retirement and post-employment benefits		(48,437		)		(91,040		)		(28,735		)		(31,631		)
			$	(48,254	)		$	(90,403	)		$	(31,398	)		$	(34,294	)
	Amounts recognized in other comprehensive income (before tax) consist of:
	Net actuarial loss		$	78,983			$	127,027			$	52			$	2,472
	Net prior service (credit) cost		(1,734		)		(2,075		)		—				115
			$	77,249			$	124,952			$	52			$	2,587
	Amortizations expected to be recognized during next fiscal year (before tax):
	Amortization of net loss		$	5,100			$	7,731			$	—			$	—
	Amortization of prior service credit		(434		)		(341		)		—				115
			$	4,666			$	7,390			$	—			$	115
	Additional information
	Accumulated benefit obligation for all defined benefit pension plans		$	213,585			$	242,854			—				—
	For defined benefit pension plans with benefit obligations in excess of plan assets:
	Aggregate benefit obligation		216,567				249,075				—				—
	Aggregate fair value of plan assets		166,992				157,560				—				—
	For defined benefit pension plans with accumulated benefit obligations in excess of plan assets:
	Aggregate accumulated benefit obligation		208,404				238,090				—				—
	Aggregate fair value of plan assets		166,992				157,560				—				—
Components of net periodic benefit cost and other amounts recognized in other comprehensive income	'
	Components of net periodic benefit cost and other amounts recognized in other comprehensive income (OCI)
			Pension Benefits												Other Benefits
	(Thousands)		2013				2012				2011				2013				2012			2011
	Net periodic benefit cost
	Service cost		$	9,724			$	7,915			$	6,955			$	305			$	285		$	284
	Interest cost		9,936				9,912				9,786				1,243				1,439			1,596
	Expected return on plan assets		(12,261		)		(11,934		)		(11,050		)		—				—			—
	Amortization of prior service cost (benefit)		(340		)		(335		)		(335		)		115				87			(36		)
	Recognized net actuarial loss		7,912				5,605				3,920				—				—			—
	Net periodic benefit cost		$	14,971			$	11,163			$	9,276			$	1,663			$	1,811		$	1,844
		Pension Benefits												Other Benefits
	(Thousands)	2013				2012				2011				2013				2012			2011
	Change in other comprehensive income
	OCI at beginning of year	$	124,955			$	104,056			$	69,716			$	2,587			$	1,180		$	(275	)
	Increase (decrease) in OCI:
	Recognized during year — prior service cost (credit)	340				335				335				(115		)		(87		)	36
	Recognized during year — net actuarial (losses) gains	(7,912		)		(5,605		)		(3,920		)		—				—			—
	Occurring during year — prior service cost	—				117				430				—				—			—
	Occurring during year — net actuarial losses (gains)	(40,143		)		25,995				37,543				(2,397		)		1,494			1,419
	Other adjustments	(3		)		—				—				(23		)		—			—
	Foreign currency exchange rate changes	12				57				(48		)		—				—			—
	OCI at end of year	$	77,249			$	124,955			$	104,056			$	52			$	2,587		$	1,180
Summary of key valuation assumptions	'
	Summary of key valuation assumptions
			Pension Benefits									Other Benefits
			2013			2012			2011			2013			2012			2011
	Weighted-average assumptions used to determine benefit obligations at fiscal year end
	Discount rate		4.8	%		3.99	%		N/A			4.5	%		3.75	%		N/A
	Rate of compensation increase		4.43	%		4.44	%		N/A			4.5	%		4.5	%		N/A
	Weighted-average assumptions used to determine net cost for the fiscal year
	Discount rate		3.97	%		4.81	%		5.49	%		3.75	%		4.5	%		5.13	%
	Expected long-term return on plan assets		7.44	%		7.65	%		7.88	%		N/A			N/A			N/A
	Rate of compensation increase		4.42	%		4.43	%		3.97	%		4.5	%		4.5	%		4	%
Assumed health care trend rates	'
	The plan in Germany is unfunded and the plan in England has assets that are approximately 4.0% of the Company’s aggregated total fair value of plan assets as of year-end 2013.
	Assumed health care trend rates at fiscal year end		2013		2012
	Health care trend rate assumed for next year		7.50%		8.00%
	Rate that the trend rate gradually declines to (ultimate trend rate)		5.00%		5.00%
	Year that the rate reaches the ultimate trend rate		2019		2019
Effects of A one-percentage-point change in assumed health care cost trend rates	'
	A one-percentage-point change in assumed health care cost trend rates would have the following effects:
			1-Percentage-								1-Percentage-
			Point Increase								Point Decrease
	(Thousands)		2013				2012				2013				2012
	Effect on total of service and interest cost components		$	30			$	35			$	(26	)		$	(31	)
	Effect on post-retirement benefit obligation		602				827				(567		)		(723		)
Summary of fair values of the Company's defined benefit pension plan assets	'
	The following tables present the fair values of the Company’s defined benefit pension plan assets as of December 31, 2013 and 2012 by asset category. See Note H to the Consolidated Financial Statements for definitions of fair value hierarchy.
			December 31, 2013
			Total				Level 1				Level 2				Level 3
	(Thousands)
	Cash		$	6,568			$	6,568			$	—			$	—
	Equity securities:
	U.S. (a)		63,321				54,095				9,226				—
	International (b)		27,403				23,911				3,492				—
	Emerging markets (c)		14,165				13,908				257				—
	Fixed income securities:
	Intermediate-term bonds (d)		21,874				14,482				7,392				—
	Short-term bonds (e)		11,608				11,608				—				—
	Global bonds (f)		12,728				10,879				1,849				—
	Other types of investments:
	Real estate fund (g)		9,943				9,882				61				—
	Multi-strategy hedge funds (h)		5,467				—				—				5,467
	Private equity funds		417				—				—				417
	Total		$	173,494			$	145,333			$	22,277			$	5,884
			31-Dec-12
			Total				Level 1				Level 2				Level 3
	(Thousands)
	Cash		$	7,388			$	7,388			$	—			$	—
	Equity securities:
	U.S. (a)		54,691				45,025				9,666				—
	International (b)		22,683				19,650				3,033				—
	Emerging markets (c)		14,786				14,535				251				—
	Fixed income securities:
	Intermediate-term bonds (d)		26,749				18,378				8,371				—
	Short-term bonds (e)		11,656				11,656				—				—
	Global bonds (f)		12,854				11,185				1,669				—
	Other types of investments:
	Real estate fund (g)		7,793				7,768				25				—
	Multi-strategy hedge funds (h)		4,191				—				—				4,191
	Private equity funds		645				—				—				645
	Total		$	163,436			$	135,585			$	23,015			$	4,836
	(a)	Mutual funds that invest in various sectors of the U.S. market.
	(b)	Mutual funds that invest in non-U.S. companies primarily in developed countries that are generally considered to be value stocks.
	(c)	Mutual funds that invest in non-U.S. companies in emerging market countries.
	(d)	Includes a mutual fund that employs a value-oriented approach to fixed income investment management and a mutual fund that invests primarily in investment-grade debt securities.
	(e)	Includes a mutual fund that seeks a market rate of return for a fixed-income portfolio with low relative volatility of returns, investing generally in U.S. and foreign debt securities maturing in five years or less.
	(f)	Mutual funds that invest in domestic and foreign sovereign securities, fixed income securities, mortgage-backed and asset-backed bonds, convertible bonds, high yield bonds and emerging market bonds.
	(g)	Includes a mutual fund that typically invests at least 80% of its assets in equity and debt securities of companies in the real estate industry or related industries or in companies which own significant real estate assets at the time of investment.
	(h)	Includes a hedge fund that employs multiple strategies to multiple asset classes with low correlations.
Summary of fair value of company's defined benefit pension plan Level 3 assets	'
	The following table summarizes changes in the fair value of the Company’s defined benefit pension plan Level 3 assets measured using significant unobservable inputs during 2013 and 2012:
	(Thousands)		Multi-				Private				Total
			strategy				Equity
			Hedge Funds				Funds
	Balance as of January 1, 2012		$	3,989			$	682			$	4,671
	Actual return:
	On assets still held at reporting date		386				17				403
	On assets sold during the period		(57		)		4				(53		)
	Purchases, sales and settlements		(127		)		(58		)		(185		)
	Balance as of December 31, 2012		$	4,191			$	645			$	4,836
	Actual return:
	On assets still held at reporting date		1,276				(93		)		1,183
	On assets sold during the period		—				229				229
	Purchases, sales and settlements		—				(364		)		(364		)
	Balance as of December 31, 2013		$	5,467			$	417			$	5,884
Estimated Future Benefits payments	'
	The following benefit payments, which reflect expected future service, as appropriate, are expected to be paid:
							Other Benefits
			Pension Benefits				Gross Benefit				Net of
							Payment				Medicare
											Part D
											Subsidy
	(Thousands)
	2014		$	10,280			$	2,663			$	2,322
	2015		9,629				2,745				2,384
	2016		10,201				2,789				2,410
	2017		12,867				2,852				2,452
	2018		11,518				2,883				2,457
	2019 through 2023		71,293				13,270				10,677

Contingencies_and_Commitments_

Contingencies and Commitments (Tables)	12 Months Ended
	Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]	'
Undiscounted reserve	'
	The undiscounted reserve balance at the beginning of the year, the amounts expensed and paid and the balance at the end of the year for 2013 and 2012 are as follows:
	(Thousands)	2013			2012
	Reserve balance at beginning of year	$	(5,301	)	$	(5,312	)
	Expensed	(503		)	(316		)
	Paid	995			327
	Reserve balance at end of year	$	(4,809	)	$	(5,301	)
	Ending balance recorded in:
	Other liabilities and accrued items	$	(430	)	$	(903	)
	Other long-term liabilities	(4,379		)	(4,398		)

Common_Stock_and_Stockbased_Co1

Common Stock and Stock-based Compensation (Tables)	12 Months Ended
	Dec. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Reconciliation of the changes in the number of shares of common stock issued	'
	A reconciliation of the changes in the number of common shares issued is as follows:
	(Thousands)
	Issued as of January 1, 2011	26,968
	Exercise of stock options and stock appreciation rights (SARs)	55
	Vesting of performance-restricted shares	1
	Issued as of December 31, 2011	27,024
	Exercise of stock options and SARs	26
	Issued as of December 31, 2012	27,050
	Exercise of stock options and SARs	114
	Issued as of December 31, 2013	27,164
Summary of company's stock option activity	'
	The following table summarizes the Company’s stock option activity during 2013:
	(Shares in thousands)	Number of		Weighted-				Aggregate		Weighted-
		Options		average				Intrinsic		average
				Exercise				Value		Remaining
				Price Per						Term (Years)
				Share
	Outstanding at December 31, 2012	96		$	15.98
	Exercised	(74	)	15.6
	Canceled	(1	)	10.3
	Outstanding at December 31, 2013	21		17.29				$	291,000	1
	Vested and expected to vest as of December 31, 2013	21		17.29				291,000		1
	Exercisable at December 31, 2013	21		17.29				291,000		1
Summary of options outstanding	'
	Summarized information on options outstanding as of December 31, 2013 is as follows:
	Range of Option Prices	Number		Weighted-		Weighted-
		Outstanding		average		average
		and Exercisable		Remaining		Exercise
		(Thousands)		Life (Years)		Price
	$14.80	2		1.3		$	14.8
	$17.08	4		0.1		17.08
	$17.68	15		1.1		17.68
	Total	21		0.9		$	17.29
Summary of restricted stock activity	'
	The following table summarizes the restricted stock activity during 2013:
	(Shares in thousands)	Number of		Weighted-
		Shares		average
				Grant Date
				Fair Value
	Outstanding at December 31, 2012	223		$	30.18
	Granted	67		27.35
	Vested	(66	)	27.72
	Forfeited	(24	)	29.36
	Outstanding at December 31, 2013	200		$	32.71
Summary of stock activity for the directors deferred compensation plan	'
	The following table summarizes the stock activity for the directors' deferred compensation plan during 2013:
	(Shares in thousands)	Number of		Weighted-
		Shares		average
				Grant  Date
				Fair Value
	Outstanding at December 31, 2012	103		$	22.28
	Granted	15		26.99
	Distributed	(17	)	20.32
	Outstanding at December 31, 2013	101		$	23.74
Summary of Company's SARs activity	'
	The following table summarizes the Company's SARs activity during 2013:
	(Shares in thousands)	Number of		Weighted-				Aggregate		Weighted-
		SARs		average				Intrinsic		average
				Exercise				Value		Remaining
				Price Per						Term (Years)
				Share
	Outstanding at December 31, 2012	993		$	24.8
	Granted	147		28.32
	Exercised	(145	)	17.42
	Cancelled	(11	)	31.9
	Outstanding at December 31, 2013	984		26.34				$	6,211,000	5
	Vested and expected to vest as of December 31, 2013	984		26.34				6,211,000		5
	Exercisable at December 31, 2013	511		20.94				5,592,000		4.7
Summary of information on SARs outstanding	'
	Summarized information on SARs outstanding as of December 31, 2013 follows:
	SARs Prices	Number		Weighted-		Weighted-
		Outstanding		average		average
		(Thousands)		Remaining		Exercise
				Life (Years)		Price
	$15.01	221		4.8		$	15.01
	$21.24-$24.03	223		5		21.87
	$27.78-$29.45	353		5.5		28.86
	$34.30-$39.30	148		4.4		39.19
	$44.72	39		3		44.72
		984		5		$	26.34
Fair value of SARs using Black-Scholes pricing model	'
	The fair value of the SARs was estimated on the grant date using the Black-Scholes pricing model with the following assumptions:
		2013		2012			2011
	Risk-free interest rate	0.7	%	0.89	%		0.03	%
	Dividend yield	1.1	%	—	%		—	%
	Volatility	56.6	%	50	%		58.7	%
	Expected lives (in years)	5		5			6.5

Accumulated_Other_Comprehensiv1

Accumulated Other Comprehensive Income (Tables)	12 Months Ended
	Dec. 31, 2013
Equity [Abstract]	'
Summary of cumulative net gain (loss) by component, net of tax, within other comprehensive income	'
	Changes in the components of accumulated other comprehensive income, including amounts reclassified out, for 2013, 2012 and 2011 and the balances in accumulated other comprehensive income as of December 31, 2013, 2012 and 2011 are as follows:
		Gains and Losses									Pension and Post Employment Benefits			Foreign Currency Translation
		On Cash Flow Hedges
	(Thousands)	Foreign Currency			Precious Metals			Total									Total
	Accumulated other comprehensive income as of January 1, 2011
	Gross	$	(1,543	)	$	—		$	(1,543	)	$	(69,441	)	$	3,989		$	(66,995	)
	Deferred tax (benefit)	(1,942		)	—			(1,942		)	(13,437		)	—			(15,379		)
	Net	399			—			399			(56,004		)	3,989			(51,616		)
	2011 current year activity:
	Other comprehensive income (loss) before reclassifications	133			51			184			(39,344		)	958			(38,202		)
	Amounts reclassified from accumulated other comprehensive income	2,809			—			2,809			3,549			—			6,358
	Net current period other comprehensive income (loss)	2,942			51			2,993			(35,795		)	958			(31,844		)
	Deferred tax on current period activity	1,029			18			1,047			(12,292		)	—			(11,245		)
	Subtotal 2011 activity	1,913			33			1,946			(23,503		)	958			(20,599		)
	Accumulated other comprehensive income as of December 31, 2011
	Gross	1,399			51			1,450			(105,236		)	4,947			(98,839		)
	Deferred tax expense (benefit)	(913		)	18			(895		)	(25,729		)	—			(26,624		)
	Net	2,312			33			2,345			(79,507		)	4,947			(72,215		)
	2012 current year activity:
	Other comprehensive income (loss) before reclassifications	693			(552		)	141			(27,662		)	(870		)	(28,391		)
	Amounts reclassified from accumulated other comprehensive income	(1,839		)	598			(1,241		)	5,357			—			4,116
	Net current period other comprehensive income (loss)	(1,146		)	46			(1,100		)	(22,305		)	(870		)	(24,275		)
	Deferred taxes on current period activity	(401		)	16			(385		)	(7,676		)	—			(8,061		)
	Subtotal 2012 activity	(745		)	30			(715		)	(14,629		)	(870		)	(16,214		)
	Accumulated other comprehensive income as of December 31, 2012
	Gross	253			97			350			(127,541		)	(4,077		)	(123,114		)
	Deferred tax expense (benefit)	(1,314		)	34			(1,280		)	(33,405		)	—			(34,685		)
	Net	1,567			63			1,630			(94,136		)	(4,077		)	(88,429		)
	2013 current year activity:
	Other comprehensive income (loss) before reclassifications	618			4			622			42,553			(3,790		)	39,385
	Amounts reclassified from accumulated other comprehensive income	(958		)	(120		)	(1,078		)	7,687			—			6,609
	Net current period other comprehensive income (loss)	(340		)	(116		)	(456		)	50,240			(3,790		)	45,994
	Deferred taxes on current period activity	(119		)	(41		)	(160		)	17,613			—			17,453
	Subtotal 2013 activity	(221		)	(75		)	(296		)	32,627			(3,790		)	28,541
	Accumulated other comprehensive income as of December 31, 2013
	Gross	(87		)	(19		)	(106		)	(77,301		)	287			(77,120		)
	Deferred tax (benefit)	(1,433		)	(7		)	(1,440		)	(15,792		)	—			(17,232		)
	Net	$	1,346		$	(12	)	$	1,334		$	(61,509	)	$	287		$	(59,888	)

Segment_Reporting_and_Geograph1

Segment Reporting and Geographic Information (Tables)	12 Months Ended
	Dec. 31, 2013
Segment Reporting [Abstract]	'
Segment Reporting	'
	(Thousands)	Advanced		Performance		Beryllium			Technical		Subtotal		All			Total
		Material		Alloys		and			Materials				Other
		Technologies				Composites
	2013
	Sales to external customers	$	744,240	$	292,189	$	61,338		$	69,115	$	1,166,882	$	—		$	1,166,882
	Intersegment sales	2,463		2,054		330			760		5,607		—			5,607
	Operating profit (loss)	4,661		23,384		(3,526		)	6,897		31,416		(4,585		)	26,831
	Depreciation, depletion and amortization	17,483		17,683		2,760			2,590		40,516		1,133			41,649
	Expenditures for long-lived assets	10,942		13,463		3,215			1,663		29,283		3,341			32,624
	Assets	306,291		264,521		142,390			21,795		734,997		42,948			777,945
	2012
	Sales to external customers	$	847,835	$	292,448	$	59,983		$	72,733	$	1,272,999	$	79		$	1,273,078
	Intersegment sales	2,556		2,718		740			672		6,686		—			6,686
	Operating profit (loss)	16,749		24,004		(3,944		)	6,608		43,417		(6,641		)	36,776
	Depreciation, depletion and amortization	16,282		14,994		1,883			2,609		35,768		1,278			37,046
	Expenditures for long-lived assets	11,874		19,906		7,962			3,604		43,346		1,315			44,661
	Assets	341,604		269,003		135,414			23,328		769,349		45,568			814,917
	2011
	Sales to external customers	$	1,051,823	$	335,323	$	60,557		$	78,732	$	1,526,435	$	295		$	1,526,730
	Intersegment sales	2,493		3,771		757			2,167		9,188		—			9,188
	Operating profit (loss)	33,471		27,241		(754		)	7,262		67,220		(10,142		)	57,078
	Depreciation, depletion and amortization	16,170		22,324		1,367			2,459		42,320		1,315			43,635
	Expenditures for long-lived assets	8,014		10,599		6,460			2,286		27,359		1,388			28,747
	Assets	342,819		235,547		127,708			21,502		727,576		44,527			772,103
Sales and long-lived assets attributed to countries based upon the location of customers	'
	Other geographic information includes the following:
	(Thousands)	2013		2012		2011
	Sales from U.S. operations	$	962,288	$	1,064,779	$	1,306,192
	Sales based upon location of customers
	United States	$	810,642	$	881,968	$	1,143,720
	All other	356,240		391,110		383,010
	Total	$	1,166,882	$	1,273,078	$	1,526,730
	Long-lived assets by country deployed
	United States	$	340,922	$	354,122	$	349,988
	All other	33,972		36,042		32,441
	Total	$	374,894	$	390,164	$	382,429

Othernet_Tables

Other-net (Tables)	12 Months Ended
	Dec. 31, 2013
Other-net [Abstract]	'
Summary of other-net expense	'
	Other-net expense is summarized for 2013, 2012 and 2011 as follows:
		Income (Expense)
	(Thousands)	2013			2012			2011
	Foreign currency exchange/translation gain (loss)	$	1,506		$	1,477		$	(2,775	)
	Amortization of intangible assets	(5,529		)	(6,008		)	(6,144		)
	Metal consignment fees	(7,218		)	(9,011		)	(9,877		)
	Changes to earn-out valuation	—			—			1,052
	Net loss on disposal of fixed assets	(1,459		)	(1,836		)	—
	Consignment facility renegotiation bank fee	(853		)	—			—
	Other items	(909		)	(231		)	1,970
	Total	$	(14,462	)	$	(15,609	)	$	(15,774	)

Facility_Consolidation_Tables

Facility Consolidation (Tables)	12 Months Ended
	Dec. 31, 2013
Restructuring and Related Activities [Abstract]	'
Costs associated with consolidation program	'
	These costs were included in the Consolidated Statements of Income as follows:
	(Thousands)	2013		2012
	Cost of sales	$	1,812	$	1,559
	Selling, general and administrative expense	2,805		1,614
	Other-net	1,373		1,603
	Total	$	5,990	$	4,776

Interest_Tables

Interest (Tables)	12 Months Ended
	Dec. 31, 2013
Interest [Abstract]	'
Summarized of interest incurred capitalized and paid as well as the amortization of capitalized interest	'
	The following chart summarizes the interest incurred, capitalized and paid, as well as the amortization of capitalized interest for 2013, 2012 and 2011:
	(Thousands)	2013		2012		2011
	Interest incurred	$	3,286	$	3,334	$	2,860
	Less capitalized interest	250		200		48
	Total net expense	$	3,036	$	3,134	$	2,812
	Interest paid	$	2,671	$	2,639	$	2,211
	Amortization of capitalized interest included in cost of sales	$	265	$	336	$	441

Income_Taxes_Tables

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Income tax expenses benefit	'
	Income before income taxes and income taxes (benefit) are comprised of the following:
	(Thousands)	2013				2012				2011
	Income before income taxes:
	Domestic	$	16,528			$	23,379			$	53,648
	Foreign	7,267				10,263				618
	Total income before income taxes	$	23,795			$	33,642			$	54,266
	Income taxes:
	Current income taxes:
	Domestic	$	4,325			$	7,825			$	15,487
	Foreign	2,205				3,615				468
	Total current	$	6,530			$	11,440			$	15,955
	Deferred income taxes (benefit):
	Domestic	$	(2,958	)		$	(3,084	)		$	(2,710	)
	Foreign	319				(44		)		(351		)
	Valuation allowance	197				666				1,393
	Total deferred	$	(2,442	)		$	(2,462	)		$	(1,668	)
	Total income taxes	$	4,088			$	8,978			$	14,287
Effective income tax rate reconciliation	'
	The reconciliation of the federal statutory and effective income tax rates follows:
		2013			2012			2011
	Federal statutory rate	35	%		35	%		35	%
	State and local income taxes, net of federal tax effect	(0.8	)		(0.3	)		0.7
	Effect of excess of percentage depletion over cost depletion	(11.8	)		(7.3	)		(3.9	)
	Manufacturing production deduction	(2.4	)		(2.2	)		(3.5	)
	Officers’ compensation	0.4			1.1			0.7
	Adjustment to unrecognized tax benefits	0.3			(0.6	)		(3.4	)
	Foreign rate differential	(0.1	)		(0.1	)		(0.2	)
	Research and experimentation tax credit	(7.4	)		—			(1.0	)
	Retiree medical expense	—			(2.0	)		—
	Valuation allowance	0.8			2			2.5
	Other items	3.2			1.1			(0.6	)
	Effective tax rate	17.2	%		26.7	%		26.3	%
Deferred tax assets and liabilities	'
	Deferred tax assets and (liabilities) recorded in the Consolidated Balance Sheets consist of the following:
		December 31,
	(Thousands)	2013				2012
	Asset (liability)
	Post-retirement benefits other than pensions	$	10,989			$	12,003
	Other reserves	13,744				12,804
	Environmental reserves	1,789				1,958
	Inventory	3,934				4,303
	Pensions	9,867				27,547
	Net operating loss and credit carryforwards	5,588				5,186
	Miscellaneous	303				357
	Subtotal	46,214				64,158
	Valuation allowance	(4,782		)		(4,584		)
	Total deferred tax assets	41,432				59,574
	Depreciation	(18,669		)		(19,388		)
	Amortization	(7,371		)		(7,939		)
	Capitalized interest expense	(184		)		(195		)
	Mine development	(2,309		)		(2,832		)
	Derivative instruments and hedging activities	(130		)		(168		)
	Total deferred tax liabilities	(28,663		)		(30,522		)
	Net deferred tax asset	$	12,769			$	29,052
Reconciliation of unrecognized tax benefits	'
	A reconciliation of the Company’s unrecognized tax benefits for the year-to-date periods ending December 31, 2013 and 2012 is as follows:
	(Thousands)	2013				2012
	Balance as of January 1	$	1,767			$	1,969
	Additions to tax provisions related to the current year	—				149
	Additions to tax positions related to prior years	484				174
	Reduction to tax positions related to prior years	(17		)		(20		)
	Lapses on statutes of limitations	(555		)		(455		)
	Settlements	—				(50		)
	Balance as of December 31	$	1,679			$	1,767

Earnings_Per_Share_Tables

Earnings Per Share (Tables)	12 Months Ended
	Dec. 31, 2013
Earnings Per Share [Abstract]	'
Computation of basic and diluted net earnings per share	'
	The following table sets forth the computation of basic and diluted EPS:
	(Thousands except per share amounts)	2013		2012		2011
	Numerator for basic and diluted EPS:
	Net income	$	19,707	$	24,664	$	39,979
	Denominator:
	Denominator for basic EPS:
	Weighted-average shares outstanding	20,571		20,418		20,365
	Effect of dilutive securities:
	Stock options and stock appreciation rights	188		163		237
	Restricted stock	101		94		152
	Performance-based restricted shares	35		4		—
	Diluted potential common shares	324		261		389
	Denominator for diluted EPS:
	Adjusted weighted-average shares outstanding	20,895		20,679		20,754
	Basic EPS	$	0.96	$	1.21	$	1.96
	Diluted EPS	$	0.94	$	1.19	$	1.93

Quarterly_Data_Unaudited_Table

Quarterly Data (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract]	'
Summary of selected quarterly financial data	'
	The following tables summarize selected quarterly financial data for the years ended December 31, 2013 and 2012:
		2013
	(Dollars in thousands except per share amounts)	First			Second			Third			Fourth			Total
		Quarter			Quarter			Quarter			Quarter
	Net sales	$	299,169		$	306,141		$	275,434		$	286,138		$	1,166,882
	Gross margin	48,339			45,992			44,483			49,164			187,978
	Percent of sales	16.2		%	15		%	16.2		%	17.2		%	16.1		%
	Net income	$	6,785		$	4,155		$	4,992		$	3,775		$	19,707
	Net income per share of common stock:
	Basic	0.33			0.2			0.24			0.18			0.96
	Diluted	0.33			0.2			0.24			0.18			0.94
	Cash dividends per share of common stock	0.075			0.08			0.08			0.08			0.315
	Stock price range:
	High	29.81			31.49			33.69			32.73
	Low	26.2			24.58			27.09			25.75
		2012
		First			Second			Third			Fourth			Total
		Quarter			Quarter			Quarter			Quarter
	Net sales	$	353,630		$	325,088		$	290,601		$	303,759		$	1,273,078
	Gross margin	49,418			53,024			52,369			43,972			198,783
	Percent of sales	14		%	16.3		%	18		%	14.5		%	15.6		%
	Net income	$	6,118		$	7,929		$	8,114		$	2,503		$	24,664
	Net income per share of common stock:
	Basic	0.3			0.39			0.4			0.12			1.21
	Diluted	0.3			0.38			0.39			0.12			1.19
	Cash dividends per share of common stock	—			0.075			0.075			0.075			0.225
	Stock price range:
	High	32.91			29.37			25.57			25.93
	Low	24.77			20.37			17.59			18.84

Significant_Accounting_Policie3

Significant Accounting Policies (Details)	12 Months Ended
	Dec. 31, 2013
Summary of depreciable lives by class of assets	'
Useful life of lease hold improvements Minimum	'Life of lease
Useful life of lease hold improvements Maximum	'Life of lease
Minimum [Member] | Land improvements [Member]	'
Summary of depreciable lives by class of assets	'
Useful life of class of asset	'5 years
Minimum [Member] | Buildings [Member]	'
Summary of depreciable lives by class of assets	'
Useful life of class of asset	'10 years
Minimum [Member] | Machinery and equipment [Member]	'
Summary of depreciable lives by class of assets	'
Useful life of class of asset	'3 years
Minimum [Member] | Furniture and fixtures [Member]	'
Summary of depreciable lives by class of assets	'
Useful life of class of asset	'4 years
Minimum [Member] | Automobiles and trucks [Member]	'
Summary of depreciable lives by class of assets	'
Useful life of class of asset	'2 years
Minimum [Member] | Research equipment [Member]	'
Summary of depreciable lives by class of assets	'
Useful life of class of asset	'6 years
Minimum [Member] | Computer hardware [Member]	'
Summary of depreciable lives by class of assets	'
Useful life of class of asset	'3 years
Minimum [Member] | Computer software [Member]	'
Summary of depreciable lives by class of assets	'
Useful life of class of asset	'3 years
Maximum [Member] | Land improvements [Member]	'
Summary of depreciable lives by class of assets	'
Useful life of class of asset	'25 years
Maximum [Member] | Buildings [Member]	'
Summary of depreciable lives by class of assets	'
Useful life of class of asset	'40 years
Maximum [Member] | Machinery and equipment [Member]	'
Summary of depreciable lives by class of assets	'
Useful life of class of asset	'15 years
Maximum [Member] | Furniture and fixtures [Member]	'
Summary of depreciable lives by class of assets	'
Useful life of class of asset	'15 years
Maximum [Member] | Automobiles and trucks [Member]	'
Summary of depreciable lives by class of assets	'
Useful life of class of asset	'8 years
Maximum [Member] | Research equipment [Member]	'
Summary of depreciable lives by class of assets	'
Useful life of class of asset	'12 years
Maximum [Member] | Computer hardware [Member]	'
Summary of depreciable lives by class of assets	'
Useful life of class of asset	'10 years
Maximum [Member] | Computer software [Member]	'
Summary of depreciable lives by class of assets	'
Useful life of class of asset	'10 years

Significant_Accounting_Policie4

Significant Accounting Policies (Details Textual) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
	Segment
Finite-Lived Intangible Assets [Line Items]	'	'	'
Estimated time period for amortization of intangible assets	'twenty years or less	'	'
Significant Accounting Policies (Textual) [Abstract]	'	'	'
Reportable Segments	4	'	'
Maturity period of highly liquid investments	'three months or less	'	'
Advertising cost incurred	$1.10	$1.20	$3.10
Criteria for recording tax liability based on sustainability upon income tax examination	'less than 50%	'	'
Maximum [Member]	'	'	'
Finite-Lived Intangible Assets [Line Items]	'	'	'
Finite-Lived Intangible Asset, Useful Life	'20 years	'	'

Acquisitions_Details_Textual

Acquisitions (Details Textual) (USD $)	12 Months Ended			3 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Mar. 30, 2012	Mar. 30, 2012	Dec. 31, 2011
				Aerospace Metal Composites Limited [Member]	EIS Optics Limited [Member]	EIS Optics Limited [Member]
						sqft
Acquisitions (Textual) [Abstract]	'	'	'	'	'	'
Payments to acquire business, net of cash acquired	$0	$3,894,000	$22,448,000	$3,300,000	'	'
Cash acquired from acquisition	'	'	'	1,500,000	'	1,500,000
Goodwill	88,753,000	88,753,000	84,036,000	1,900,000	'	13,900,000
Acquisitions for cash	'	'	'	'	'	23,000,000
Area for manufacturing facility in shanghai, China	'	'	'	'	'	101,000
Payments as a result of the resolution of working capital valuation adjustments	'	'	'	'	$600,000	'

Inventories_Details

Inventories (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Principally average cost:	'	'
Raw material and supplies	$42,352	$42,751
Work in process	203,107	203,179
Finished goods	45,503	51,094
Gross inventories	290,962	297,024
Excess of average cost over LIFO inventory value	77,570	90,899
Net inventories	$213,392	$206,125

Inventories_Details_Textual

Inventories (Details Textual) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Inventories (Textual) [Abstract]	'	'
Gross inventories under LIFO method	$195	$195.70
Reduction in cost of sales by the liquidation of LIFO inventory layers	$1	$0.50

Property_Plant_and_Equipment_D

Property, Plant and Equipment (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Summary of Property, plant and equipment	'	'	'
Property, plant and equipment	$782,879,000	$779,785,000	'
Less allowances for depreciation, amortization and depletion	-520,986,000	-507,243,000	'
Property, plant and equipment - net	261,893,000	272,542,000	'
Property, Plant and Equipment (Textual) [Abstract]	'	'	'
Cost of project	104,900,000	'	'
Capitalization of fixed assets	14,700,000	'	'
Capitalization of capital leases	10,000,000	'	'
Reimbursements	63,500,000	'	'
Depreciation expense	4,700,000	2,300,000	'
Cost of sales	4,700,000	2,300,000	'
Depreciation and amortization expense	41,649,000	37,046,000	43,635,000
Net book value of capitalized software	7,000,000	8,500,000	'
Depreciation expense related to software	1,700,000	1,600,000	1,200,000
Land [Member]	'	'	'
Summary of Property, plant and equipment	'	'	'
Property, plant and equipment	8,097,000	8,797,000	'
Buildings [Member]	'	'	'
Summary of Property, plant and equipment	'	'	'
Property, plant and equipment	128,187,000	127,691,000	'
Machinery and equipment [Member]	'	'	'
Summary of Property, plant and equipment	'	'	'
Property, plant and equipment	569,617,000	570,001,000	'
Computer software [Member]	'	'	'
Summary of Property, plant and equipment	'	'	'
Property, plant and equipment	31,571,000	31,640,000	'
Construction in progress [Member]	'	'	'
Summary of Property, plant and equipment	'	'	'
Property, plant and equipment	14,363,000	15,389,000	'
Land Building Machinery and Equipment [Member]	'	'	'
Summary of Property, plant and equipment	'	'	'
Less allowances for depreciation, amortization and depletion	-510,718,000	-503,560,000	'
Property, plant and equipment - net	241,117,000	249,956,000	'
Capital leases [Member]	'	'	'
Summary of Property, plant and equipment	'	'	'
Property, plant and equipment	10,912,000	10,912,000	'
Less allowances for depreciation, amortization and depletion	-1,728,000	-1,440,000	'
Property, plant and equipment - net	9,184,000	9,472,000	'
Property, Plant and Equipment (Textual) [Abstract]	'	'	'
Depreciation and amortization expense	36,100,000	31,000,000	37,500,000
Mineral resources [Member]	'	'	'
Summary of Property, plant and equipment	'	'	'
Property, plant and equipment	4,979,000	4,979,000	'
Mine development [Member]	'	'	'
Summary of Property, plant and equipment	'	'	'
Property, plant and equipment	15,153,000	10,377,000	'
Productive land [Member]	'	'	'
Summary of Property, plant and equipment	'	'	'
Less allowances for depreciation, amortization and depletion	-8,540,000	-2,243,000	'
Property, plant and equipment - net	$11,592,000	$13,113,000	'

Intangible_Assets_Details_1

Intangible Assets (Details 1) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Summary of cost, accumulated amortization and net book value of intangible assets	'	'
Cost	$61,405	$60,038
Accumulated amortization	-37,157	-31,169
Net book value	24,248	28,869
Aggregate amortization expense	6,208	6,657
Deferred financing costs [Member]	'	'
Summary of cost, accumulated amortization and net book value of intangible assets	'	'
Cost	7,794	6,427
Accumulated amortization	-4,507	-4,048
Net book value	3,287	2,379
Customer relationships [Member]	'	'
Summary of cost, accumulated amortization and net book value of intangible assets	'	'
Cost	38,427	38,427
Accumulated amortization	-22,624	-18,703
Net book value	15,803	19,724
Technology [Member]	'	'
Summary of cost, accumulated amortization and net book value of intangible assets	'	'
Cost	12,092	12,092
Accumulated amortization	-7,626	-6,538
Net book value	4,466	5,554
License [Member]	'	'
Summary of cost, accumulated amortization and net book value of intangible assets	'	'
Cost	2,480	2,480
Accumulated amortization	-1,828	-1,340
Net book value	652	1,140
Non-compete contracts [Member]	'	'
Summary of cost, accumulated amortization and net book value of intangible assets	'	'
Cost	550	550
Accumulated amortization	-550	-530
Net book value	0	20
Trade name [Member]	'	'
Summary of cost, accumulated amortization and net book value of intangible assets	'	'
Cost	62	62
Accumulated amortization	-22	-10
Net book value	$40	$52

Intangible_Assets_Details_2

Intangible Assets (Details 2) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Summary of reconciliation of goodwill	'	'
Balance at the beginning of the year	$88,753	$84,036
Current year additions	0	4,717
Balance at the end of the year	$88,753	$88,753

Intangible_Assets_Details_Text

Intangible Assets (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Goodwill [Line Items]	'	'	'
Deferred Finance Costs, Net	$1,600,000	'	'
Amortization Of Finance Costs, Remaining Average Period	'4 years 9 months 18 days	'	'
Goodwill	88,753,000	88,753,000	84,036,000
Intangible Assets (Textual) [Abstract]	'	'	'
Aggregate amortization expense, estimated 2014	5,900,000	'	'
Aggregate amortization expense, estimated 2015	5,800,000	'	'
Aggregate amortization expense, estimated 2016	5,100,000	'	'
Aggregate amortization expense, estimated 2017	4,500,000	'	'
Aggregate amortization expense, estimated 2018	1,700,000	'	'
Advanced Material Technologies [Member]	'	'	'
Goodwill [Line Items]	'	'	'
Goodwill	86,900,000	'	'
Beryllium And Composites [Member]	'	'	'
Goodwill [Line Items]	'	'	'
Goodwill	$1,900,000	'	'

Debt_Details

Debt (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Summary of long-term debt	'	'
Revolving credit agreement	$15,000	$30,000
Fixed rate industrial development revenue bonds payable in annual installments through 2021	6,575	7,158
Variable rate industrial development revenue bonds payable in 2016	8,305	8,305
Total outstanding	29,880	45,463
Current portion of long-term debt	-613	-583
Total	$29,267	$44,880

Debt_Details_1

Debt (Details 1) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Maturities on long-term debt instruments	'	'
2014	$613	'
2015	653	'
2016	9,000	'
2017	733	'
2018	15,773	'
Thereafter	3,108	'
Total outstanding	$29,880	$45,463

Debt_Details_2

Debt (Details 2) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Summary of short-term lines of credit	'	'
Available	$327,500	'
Short-term Debt [Member]	'	'
Summary of short-term lines of credit	'	'
Total	362,492	311,500
Outstanding	34,953	48,850
Available	327,539	262,650
Domestic [Member] | Short-term Debt [Member]	'	'
Summary of short-term lines of credit	'	'
Total	320,510	256,799
Outstanding	6,291	8,000
Available	314,219	248,799
Foreign [Member] | Short-term Debt [Member]	'	'
Summary of short-term lines of credit	'	'
Total	13,320	15,266
Outstanding	0	1,415
Available	13,320	13,851
Precious metal [Member] | Short-term Debt [Member]	'	'
Summary of short-term lines of credit	'	'
Total	28,662	39,435
Outstanding	28,662	39,435
Available	$0	$0

Debt_Details_Textual

Debt (Details Textual)

1 Months Ended

1 Months Ended

1 Months Ended

12 Months Ended

Jul. 31, 2013

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Dec. 31, 2012

Apr. 30, 2011

Dec. 31, 2013

Nov. 30, 1996

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2013

Jul. 31, 2013

Dec. 31, 2013

Dec. 31, 2013

financial_institution

USD ($)

USD ($)

Line of Credit [Member]

Line of Credit [Member]

Toledo-Lucas County Port Authority and Dayton-Montgomery County Port Authority [Member]

Toledo-Lucas County Port Authority and Dayton-Montgomery County Port Authority [Member]

Lorain Port Authority [Member]

Lorain Port Authority [Member]

Lorain Port Authority [Member]

Revolving Credit Facility [Member]

Revolving Credit Facility [Member]

Letter of Credit [Member]

Foreign Line of Credit [Member]

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

EUR (€)

Line of Credit Facility [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Line of Credit Facility, Number of Financial Institutions

6

'

'

'

'

'

'

'

'

'

'

'

'

'

Maximum borrowing amount under revolving credit agreement

'

'

'

'

'

'

'

'

'

'

$375,000,000

$375,000,000

'

'

Additional term loan

'

'

'

'

'

'

'

'

'

'

'

100,000,000

'

'

Outstanding amount

'

'

'

'

'

'

'

'

'

'

'

'

39,500,000

'

Variable commitment fee

'

'

'

'

'

'

'

'

'

'

0.23%

'

'

'

Amount of maximum available unused credit

'

327,500,000

'

'

'

'

'

'

'

'

'

'

'

'

Aggregate available borrowings

'

186,800,000

'

'

'

'

'

'

'

'

'

'

'

'

Foreign lines of credit committed and secured

'

'

'

'

'

'

'

'

'

'

'

'

'

3,500,000

Average interest rate on short term debt

'

'

'

2.47%

2.43%

'

'

'

'

'

'

'

'

'

Amount issued in variable rate industrial revenue bonds

'

'

'

'

'

8,000,000

'

8,300,000

'

'

'

'

'

'

Interest rate on bonds

'

'

'

'

'

'

4.90%

'

'

'

'

'

'

'

Unamortized balance of the bonds

'

$6,575,000

$7,158,000

'

'

'

$6,600,000

'

'

'

'

'

'

'

Variable rate minimum

'

'

'

'

'

'

'

'

0.19%

0.26%

'

'

'

'

Variable rate maximum

'

'

'

'

'

'

'

'

0.38%

0.46%

'

'

'

'

Leasing_Arrangements_Details

Leasing Arrangements (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Capital Leases	'	'	'
2014	$1,076,000	'	'
2015	1,069,000	'	'
2016	1,064,000	'	'
2017	1,064,000	'	'
2018	1,064,000	'	'
2019 and thereafter	4,701,000	'	'
Total minimum lease payments	10,038,000	'	'
Amounts representing interest	2,151,000	'	'
Present value of net minimum lease payments	7,887,000	'	'
Operating Leases	'	'	'
2014	6,931,000	'	'
2015	6,227,000	'	'
2016	5,257,000	'	'
2017	4,032,000	'	'
2018	3,436,000	'	'
2019 and thereafter	12,110,000	'	'
Total minimum lease payments	37,993,000	'	'
Leasing Arrangements (Textual) [Abstract]	'	'	'
Operating lease term maximum	'25 years	'	'
Operating lease expense	$9,400,000	$9,000,000	$8,900,000

Fair_Value_Information_and_Der2

Fair Value Information and Derivative Financial Instruments (Details) (Fair Value, Measurements, Recurring [Member], USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Financial Assets	'
Assets Fair Value Disclosure	$838
Financial Liabilities	'
Liabilities Fair Value Disclosure	944
Directors' deferred compensation liability [Member]	'
Financial Liabilities	'
Liabilities Fair Value Disclosure	535
Precious Metal Swaps [Member]	'
Financial Liabilities	'
Liabilities Fair Value Disclosure	30
Foreign currency forward contracts [Member]	'
Financial Liabilities	'
Liabilities Fair Value Disclosure	379
Directors' deferred compensation investments [Member]	'
Financial Assets	'
Assets Fair Value Disclosure	535
Precious Metal Forward Contracts [Member]	'
Financial Assets	'
Assets Fair Value Disclosure	11
Foreign Currency Forward Contract [Member]	'
Financial Assets	'
Assets Fair Value Disclosure	292
Fair Value, Inputs, Level 1 [Member]	'
Financial Assets	'
Assets Fair Value Disclosure	535
Financial Liabilities	'
Liabilities Fair Value Disclosure	535
Fair Value, Inputs, Level 1 [Member] | Directors' deferred compensation liability [Member]	'
Financial Liabilities	'
Liabilities Fair Value Disclosure	535
Fair Value, Inputs, Level 1 [Member] | Precious Metal Swaps [Member]	'
Financial Liabilities	'
Liabilities Fair Value Disclosure	0
Fair Value, Inputs, Level 1 [Member] | Foreign currency forward contracts [Member]	'
Financial Liabilities	'
Liabilities Fair Value Disclosure	0
Fair Value, Inputs, Level 1 [Member] | Directors' deferred compensation investments [Member]	'
Financial Assets	'
Assets Fair Value Disclosure	535
Fair Value, Inputs, Level 1 [Member] | Precious Metal Forward Contracts [Member]	'
Financial Assets	'
Assets Fair Value Disclosure	0
Fair Value, Inputs, Level 1 [Member] | Foreign Currency Forward Contract [Member]	'
Financial Assets	'
Assets Fair Value Disclosure	0
Fair Value, Inputs, Level 2 [Member]	'
Financial Assets	'
Assets Fair Value Disclosure	303
Financial Liabilities	'
Liabilities Fair Value Disclosure	409
Fair Value, Inputs, Level 2 [Member] | Directors' deferred compensation liability [Member]	'
Financial Liabilities	'
Liabilities Fair Value Disclosure	0
Fair Value, Inputs, Level 2 [Member] | Precious Metal Swaps [Member]	'
Financial Liabilities	'
Liabilities Fair Value Disclosure	30
Fair Value, Inputs, Level 2 [Member] | Foreign currency forward contracts [Member]	'
Financial Liabilities	'
Liabilities Fair Value Disclosure	379
Fair Value, Inputs, Level 2 [Member] | Directors' deferred compensation investments [Member]	'
Financial Assets	'
Assets Fair Value Disclosure	0
Fair Value, Inputs, Level 2 [Member] | Precious Metal Forward Contracts [Member]	'
Financial Assets	'
Assets Fair Value Disclosure	11
Fair Value, Inputs, Level 2 [Member] | Foreign Currency Forward Contract [Member]	'
Financial Assets	'
Assets Fair Value Disclosure	292
Fair Value, Inputs, Level 3 [Member]	'
Financial Assets	'
Assets Fair Value Disclosure	0
Financial Liabilities	'
Liabilities Fair Value Disclosure	0
Fair Value, Inputs, Level 3 [Member] | Directors' deferred compensation liability [Member]	'
Financial Liabilities	'
Liabilities Fair Value Disclosure	0
Fair Value, Inputs, Level 3 [Member] | Precious Metal Swaps [Member]	'
Financial Liabilities	'
Liabilities Fair Value Disclosure	0
Fair Value, Inputs, Level 3 [Member] | Foreign currency forward contracts [Member]	'
Financial Liabilities	'
Liabilities Fair Value Disclosure	0
Fair Value, Inputs, Level 3 [Member] | Directors' deferred compensation investments [Member]	'
Financial Assets	'
Assets Fair Value Disclosure	0
Fair Value, Inputs, Level 3 [Member] | Precious Metal Forward Contracts [Member]	'
Financial Assets	'
Assets Fair Value Disclosure	0
Fair Value, Inputs, Level 3 [Member] | Foreign Currency Forward Contract [Member]	'
Financial Assets	'
Assets Fair Value Disclosure	$0

Fair_Value_Information_and_Der3

Fair Value Information and Derivative Financial Instruments (Details 1) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]	'	'
Notional amount of derivatives	$41,189	$55,367
Fair value of derivatives	-106	350
Prepaid expenses [Member]	'	'
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]	'	'
Notional amount of derivative assets	10,614	22,647
Fair value of derivative assets	303	847
Prepaid expenses [Member] | Forward Contracts [Member] | Foreign Exchange Forward [Member] | Yen [Member]	'	'
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]	'	'
Notional amount of derivative assets	4,951	8,024
Fair value of derivative assets	292	650
Prepaid expenses [Member] | Forward Contracts [Member] | Price Risk Derivative [Member]	'	'
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]	'	'
Notional amount of derivative assets	5,663	14,623
Fair value of derivative assets	11	197
Other liabilities and accrued items [Member]	'	'
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]	'	'
Notional amount of derivative liabilities	29,623	32,720
Fair value of derivative liabilities	-394	-497
Other liabilities and accrued items [Member] | Forward Contracts [Member] | Foreign Exchange Forward [Member] | Euro [Member]	'	'
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]	'	'
Notional amount of derivative liabilities	25,112	21,047
Fair value of derivative liabilities	-364	-397
Other liabilities and accrued items [Member] | Swap [Member] | Price Risk Derivative [Member]	'	'
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]	'	'
Notional amount of derivative liabilities	4,511	11,673
Fair value of derivative liabilities	-30	-100
Other long-term liabilities [Member] | Forward Contracts [Member] | Foreign Exchange Forward [Member] | Euro [Member]	'	'
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]	'	'
Notional amount of derivative liabilities	952	0
Fair value of derivative liabilities	($15)	$0

Fair_Value_Information_and_Der4

Fair Value Information and Derivative Financial Instruments (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Fair Value Information and Derivative Financial Instruments [Abstract]	'	'	'
Total derivative ineffectiveness expense	$0	$0	$0
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax	($100,000)	$400,000	'

Pensions_and_Other_Postretirem2

Pensions and Other Post-retirement Benefits (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Change in plan assets	'	'	'
Fair value of plan assets at end of year	$173,494	$163,436	'
Pension Benefits [Member]	'	'	'
Change in benefit obligation	'	'	'
Benefit obligation at beginning of year	253,839	210,996	'
Service cost	9,724	7,915	6,955
Interest cost	9,936	9,912	9,786
Plan amendments	0	117	'
Actuarial (gain) loss	-28,581	32,595	'
Benefit payments from fund	-22,893	-7,523	'
Benefit payments directly by Company	-136	-129	'
Expenses paid from assets	-613	-293	'
Medicare Part D subsidy	0	0	'
Foreign currency exchange rate changes	472	249	'
Benefit obligation at end of year	221,748	253,839	210,996
Change in plan assets	'	'	'
Fair value of plan assets at beginning of year	163,436	140,344	'
Actual return on plan assets	23,824	18,534	'
Employer contributions	9,615	12,218	'
Benefit payments from fund	-22,893	-7,523	'
Expenses paid from assets	-613	-293	'
Foreign currency exchange rate changes	125	156	'
Fair value of plan assets at end of year	173,494	163,436	140,344
Funded status at end of year	-48,254	-90,403	'
Amounts recognized in the Consolidated Balance Sheets consist of:	'	'	'
Other assets	1,321	1,112	'
Other liabilities and accrued items	-1,138	-475	'
Retirement and post-employment benefits	-48,437	-91,040	'
Amounts recognized in the consolidated balance sheets, total	-48,254	-90,403	'
Amounts recognized in other comprehensive income (before tax) consist of:	'	'	'
Net actuarial loss	78,983	127,027	'
Net prior service (credit) cost	-1,734	-2,075	'
Amounts recognized in other comprehensive income (before tax),total	77,249	124,952	'
Amortizations expected to be recognized during next fiscal year (before tax):	'	'	'
Amortization of net loss	5,100	7,731	'
Amortization of prior service credit	-434	-341	'
Amortizations expected to be recognized during next fiscal year (before tax),total	4,666	7,390	'
Additional information	'	'	'
Accumulated benefit obligation for all defined benefit pension plans	213,585	242,854	'
For defined benefit pension plans with benefit obligations in excess of plan assets:	'	'	'
Aggregate benefit obligation	216,567	249,075	'
Aggregate fair value of plan assets	166,992	157,560	'
For defined benefit pension plans with accumulated benefit obligations in excess of plan assets:	'	'	'
Aggregate accumulated benefit obligation	208,404	238,090	'
Aggregate fair value of plan assets	166,992	157,560	'
Other Benefits [Member]	'	'	'
Change in benefit obligation	'	'	'
Benefit obligation at beginning of year	34,294	33,209	'
Service cost	305	285	284
Interest cost	1,243	1,439	1,596
Plan amendments	0	0	'
Actuarial (gain) loss	-2,396	1,493	'
Benefit payments from fund	0	0	'
Benefit payments directly by Company	-2,271	-2,431	'
Expenses paid from assets	0	0	'
Medicare Part D subsidy	223	299	'
Foreign currency exchange rate changes	0	0	'
Benefit obligation at end of year	31,398	34,294	33,209
Change in plan assets	'	'	'
Fair value of plan assets at beginning of year	0	0	'
Actual return on plan assets	0	0	'
Employer contributions	0	0	'
Benefit payments from fund	0	0	'
Expenses paid from assets	0	0	'
Foreign currency exchange rate changes	0	0	'
Fair value of plan assets at end of year	0	0	0
Funded status at end of year	-31,398	-34,294	'
Amounts recognized in the Consolidated Balance Sheets consist of:	'	'	'
Other assets	0	0	'
Other liabilities and accrued items	-2,663	-2,663	'
Retirement and post-employment benefits	-28,735	-31,631	'
Amounts recognized in the consolidated balance sheets, total	-31,398	-34,294	'
Amounts recognized in other comprehensive income (before tax) consist of:	'	'	'
Net actuarial loss	52	2,472	'
Net prior service (credit) cost	0	115	'
Amounts recognized in other comprehensive income (before tax),total	52	2,587	'
Amortizations expected to be recognized during next fiscal year (before tax):	'	'	'
Amortization of net loss	0	0	'
Amortization of prior service credit	0	115	'
Amortizations expected to be recognized during next fiscal year (before tax),total	0	115	'
Additional information	'	'	'
Accumulated benefit obligation for all defined benefit pension plans	0	0	'
For defined benefit pension plans with benefit obligations in excess of plan assets:	'	'	'
Aggregate benefit obligation	0	0	'
Aggregate fair value of plan assets	0	0	'
For defined benefit pension plans with accumulated benefit obligations in excess of plan assets:	'	'	'
Aggregate accumulated benefit obligation	0	0	'
Aggregate fair value of plan assets	$0	$0	'

Pensions_and_Other_Postretirem3

Pensions and Other Post-retirement Benefits (Details 1) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net periodic benefit cost	'	'	'
Expected return on plan assets	'	$0	$0
Pension Benefits [Member]	'	'	'
Net periodic benefit cost	'	'	'
Service cost	9,724	7,915	6,955
Interest cost	9,936	9,912	9,786
Expected return on plan assets	-12,261	-11,934	-11,050
Amortization of prior service cost (benefit)	-340	-335	-335
Recognized net actuarial loss	7,912	5,605	3,920
Net periodic benefit cost	14,971	11,163	9,276
Change in other comprehensive income	'	'	'
OCI at beginning of year	124,955	104,056	69,716
Increase (decrease) in OCI:	'	'	'
Recognized during year — prior service cost (credit)	340	335	335
Recognized during year — net actuarial (losses) gains	-7,912	-5,605	-3,920
Occurring during year — prior service cost	0	117	430
Occurring during year — net actuarial losses (gains)	-40,143	25,995	37,543
Other adjustments	-3	0	0
Foreign currency exchange rate changes	12	57	-48
OCI at end of year	77,249	124,955	104,056
Other Benefits [Member]	'	'	'
Net periodic benefit cost	'	'	'
Service cost	305	285	284
Interest cost	1,243	1,439	1,596
Expected return on plan assets	0	'	'
Amortization of prior service cost (benefit)	115	87	-36
Recognized net actuarial loss	0	0	0
Net periodic benefit cost	1,663	1,811	1,844
Change in other comprehensive income	'	'	'
OCI at beginning of year	2,587	1,180	-275
Increase (decrease) in OCI:	'	'	'
Recognized during year — prior service cost (credit)	-115	-87	36
Recognized during year — net actuarial (losses) gains	0	0	0
Occurring during year — prior service cost	0	0	0
Occurring during year — net actuarial losses (gains)	-2,397	1,494	1,419
Other adjustments	-23	0	0
Foreign currency exchange rate changes	0	0	0
OCI at end of year	$52	$2,587	$1,180

Pensions_and_Other_Postretirem4

Pensions and Other Post-retirement Benefits (Details 2)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Weighted-average assumptions used to determine benefit obligations at fiscal year end	'	'	'
Rate of compensation increase	4.50%	4.50%	4.00%
Pension Benefits [Member]	'	'	'
Weighted-average assumptions used to determine benefit obligations at fiscal year end	'	'	'
Discount rate	4.80%	3.99%	'
Rate of compensation increase	4.43%	4.44%	'
Weighted-average assumptions used to determine net cost for the fiscal year	'	'	'
Discount rate	3.97%	4.81%	5.49%
Expected long-term return on plan assets	7.44%	7.65%	7.88%
Rate of compensation increase	4.42%	4.43%	3.97%
Other Benefits [Member]	'	'	'
Weighted-average assumptions used to determine benefit obligations at fiscal year end	'	'	'
Discount rate	4.50%	3.75%	'
Rate of compensation increase	4.50%	4.50%	'
Weighted-average assumptions used to determine net cost for the fiscal year	'	'	'
Discount rate	3.75%	4.50%	5.13%
Rate of compensation increase	4.50%	4.50%	4.00%

Pensions_and_Other_Postretirem5

Pensions and Other Post-retirement Benefits (Details 3)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Assumed health care trend rates at fiscal year end	'	'
Health care trend rate assumed for next year	7.50%	8.00%
Rate that the trend rate gradually declines to (ultimate trend rate)	5.00%	5.00%
Year that the rate reaches the ultimate trend rate	'2019	'2019

Pensions_and_Other_Postretirem6

Pensions and Other Post-retirement Benefits (Details 4) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Effects of A one-percentage-point change in assumed health care cost trend rates	'	'
Effect on total of service and interest cost components,1-Percentage-Point Increase	$30	$35
Effect on total of service and interest cost components,1-Percentage-Point Decrease	-26	-31
Effect on post-retirement benefit obligation,1-Percentage-Point Increase	602	827
Effect on post-retirement benefit obligation,1-Percentage-Point Decrease	($567)	($723)

Pensions_and_Other_Postretirem7

Pensions and Other Post-retirement Benefits (Details 5) (USD $)	Dec. 31, 2013		Dec. 31, 2012
In Thousands, unless otherwise specified
Summary of fair values of the Company's defined benefit pension plan assets	'		'
Fair Value of Plan Assets	$173,494		$163,436
Cash [Member]	'		'
Summary of fair values of the Company's defined benefit pension plan assets	'		'
Fair Value of Plan Assets	6,568		7,388
U.S. Equities [Member]	'		'
Summary of fair values of the Company's defined benefit pension plan assets	'		'
Fair Value of Plan Assets	63,321	[1]	54,691	[1]
International Equities [Member]	'		'
Summary of fair values of the Company's defined benefit pension plan assets	'		'
Fair Value of Plan Assets	27,403	[2]	22,683	[2]
Emerging Markets Equities [Member]	'		'
Summary of fair values of the Company's defined benefit pension plan assets	'		'
Fair Value of Plan Assets	14,165	[3]	14,786	[3]
Intermediate-term bonds [Member]	'		'
Summary of fair values of the Company's defined benefit pension plan assets	'		'
Fair Value of Plan Assets	21,874	[4]	26,749	[4]
Short-term bonds [Member]	'		'
Summary of fair values of the Company's defined benefit pension plan assets	'		'
Fair Value of Plan Assets	11,608	[5]	11,656	[5]
Global bonds [Member]	'		'
Summary of fair values of the Company's defined benefit pension plan assets	'		'
Fair Value of Plan Assets	12,728	[6]	12,854	[6]
Real estate fund [Member]	'		'
Summary of fair values of the Company's defined benefit pension plan assets	'		'
Fair Value of Plan Assets	9,943	[7]	7,793	[7]
Multi-strategy hedge funds [Member]	'		'
Summary of fair values of the Company's defined benefit pension plan assets	'		'
Fair Value of Plan Assets	5,467	[8]	4,191	[8]
Private equity funds [Member]	'		'
Summary of fair values of the Company's defined benefit pension plan assets	'		'
Fair Value of Plan Assets	417		645
Level 1 [Member]	'		'
Summary of fair values of the Company's defined benefit pension plan assets	'		'
Fair Value of Plan Assets	145,333		135,585
Level 1 [Member] | Cash [Member]	'		'
Summary of fair values of the Company's defined benefit pension plan assets	'		'
Fair Value of Plan Assets	6,568		7,388
Level 1 [Member] | U.S. Equities [Member]	'		'
Summary of fair values of the Company's defined benefit pension plan assets	'		'
Fair Value of Plan Assets	54,095	[1]	45,025	[1]
Level 1 [Member] | International Equities [Member]	'		'
Summary of fair values of the Company's defined benefit pension plan assets	'		'
Fair Value of Plan Assets	23,911	[2]	19,650	[2]
Level 1 [Member] | Emerging Markets Equities [Member]	'		'
Summary of fair values of the Company's defined benefit pension plan assets	'		'
Fair Value of Plan Assets	13,908	[3]	14,535	[3]
Level 1 [Member] | Intermediate-term bonds [Member]	'		'
Summary of fair values of the Company's defined benefit pension plan assets	'		'
Fair Value of Plan Assets	14,482	[4]	18,378	[4]
Level 1 [Member] | Short-term bonds [Member]	'		'
Summary of fair values of the Company's defined benefit pension plan assets	'		'
Fair Value of Plan Assets	11,608	[5]	11,656	[5]
Level 1 [Member] | Global bonds [Member]	'		'
Summary of fair values of the Company's defined benefit pension plan assets	'		'
Fair Value of Plan Assets	10,879	[6]	11,185	[6]
Level 1 [Member] | Real estate fund [Member]	'		'
Summary of fair values of the Company's defined benefit pension plan assets	'		'
Fair Value of Plan Assets	9,882	[7]	7,768	[7]
Level 2 [Member]	'		'
Summary of fair values of the Company's defined benefit pension plan assets	'		'
Fair Value of Plan Assets	22,277		23,015
Level 2 [Member] | U.S. Equities [Member]	'		'
Summary of fair values of the Company's defined benefit pension plan assets	'		'
Fair Value of Plan Assets	9,226	[1]	9,666	[1]
Level 2 [Member] | International Equities [Member]	'		'
Summary of fair values of the Company's defined benefit pension plan assets	'		'
Fair Value of Plan Assets	3,492	[2]	3,033	[2]
Level 2 [Member] | Emerging Markets Equities [Member]	'		'
Summary of fair values of the Company's defined benefit pension plan assets	'		'
Fair Value of Plan Assets	257	[3]	251	[3]
Level 2 [Member] | Intermediate-term bonds [Member]	'		'
Summary of fair values of the Company's defined benefit pension plan assets	'		'
Fair Value of Plan Assets	7,392	[4]	8,371	[4]
Level 2 [Member] | Global bonds [Member]	'		'
Summary of fair values of the Company's defined benefit pension plan assets	'		'
Fair Value of Plan Assets	1,849	[6]	1,669	[6]
Level 2 [Member] | Real estate fund [Member]	'		'
Summary of fair values of the Company's defined benefit pension plan assets	'		'
Fair Value of Plan Assets	61	[7]	25	[7]
Level 3 [Member]	'		'
Summary of fair values of the Company's defined benefit pension plan assets	'		'
Fair Value of Plan Assets	5,884		4,836
Level 3 [Member] | Multi-strategy hedge funds [Member]	'		'
Summary of fair values of the Company's defined benefit pension plan assets	'		'
Fair Value of Plan Assets	5,467	[8]	4,191	[8]
Level 3 [Member] | Private equity funds [Member]	'		'
Summary of fair values of the Company's defined benefit pension plan assets	'		'
Fair Value of Plan Assets	$417		$645
[1]	Mutual funds that invest in various sectors of the U.S. market.
[2]	Mutual funds that invest in non-U.S. companies primarily in developed countries that are generally considered to be value stocks.
[3]	Mutual funds that invest in non-U.S. companies in emerging market countries.
[4]	Includes a mutual fund that employs a value-oriented approach to fixed income investment management and a mutual fund that invests primarily in investment-grade debt securities.
[5]	Includes a mutual fund that seeks a market rate of return for a fixed-income portfolio with low relative volatility of returns, investing generally in U.S. and foreign debt securities maturing in five years or less.
[6]	Mutual funds that invest in domestic and foreign sovereign securities, fixed income securities, mortgage-backed and asset-backed bonds, convertible bonds, high yield bonds and emerging market bonds.
[7]	Includes a mutual fund that typically invests at least 80% of its assets in equity and debt securities of companies in the real estate industry or related industries or in companies which own significant real estate assets at the time of investment.
[8]	Includes a hedge fund that employs multiple strategies to multiple asset classes with low correlations.

Pensions_and_Other_Postretirem8

Pensions and Other Post-retirement Benefits (Details 6) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Summary of fair value of company's defined benefit pension plan Level 3 assets	'	'
Beginning balance	$4,836	$4,671
Actual return:	'	'
On assets still held at reporting date	1,183	403
On assets sold during the period	229	-53
Purchases, sales and settlements	-364	-185
Ending balance	5,884	4,836
Multi-strategy hedge funds [Member]	'	'
Summary of fair value of company's defined benefit pension plan Level 3 assets	'	'
Beginning balance	4,191	3,989
Actual return:	'	'
On assets still held at reporting date	1,276	386
On assets sold during the period	0	-57
Purchases, sales and settlements	0	-127
Ending balance	5,467	4,191
Private equity funds [Member]	'	'
Summary of fair value of company's defined benefit pension plan Level 3 assets	'	'
Beginning balance	645	682
Actual return:	'	'
On assets still held at reporting date	-93	17
On assets sold during the period	229	4
Purchases, sales and settlements	-364	-58
Ending balance	$417	$645

Pensions_and_Other_Postretirem9

Pensions and Other Post-retirement Benefits (Details 7) (USD $)	Dec. 31, 2013
In Thousands, unless otherwise specified
Pension Benefits [Member]	'
Estimated Future Benefits payments	'
2014	$10,280
2015	9,629
2016	10,201
2017	12,867
2018	11,518
2019 through 2023	71,293
Gross Benefit Payment [Member]	'
Estimated Future Benefits payments	'
2014	2,663
2015	2,745
2016	2,789
2017	2,852
2018	2,883
2019 through 2023	13,270
Net of Medicare Part D Subsidy [Member]	'
Estimated Future Benefits payments	'
2014	2,322
2015	2,384
2016	2,410
2017	2,452
2018	2,457
2019 through 2023	$10,677

Recovered_Sheet1

Pensions and Other Post-retirement Benefits (Details Textual) (USD $)	0 Months Ended		3 Months Ended	12 Months Ended
	Dec. 31, 2013	Jun. 30, 2013	Mar. 29, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Pension and other post-retirement benefits (Textual) [Abstract]	'	'	'	'	'	'	'
Expected rate of return assumption	'	'	'	7.25%	7.50%	7.75%	8.00%
Domestic expected long-term rate of return assumption	'	'	'	7.25%	'	'	'
Increase graded assumption for the domestic rate of compensation	4.50%	'	'	4.50%	4.50%	4.00%	'
Maturity Of debt securities	'	'	'five years or less	'	'	'	'
Mutual fund that typically invests at least of its assets in equity and debt securities	'	'	80.00%	'	'	'	'
Percentage of plan withdrawals from the multi-strategy hedge fund partnerships	25.00%	25.00%	'	'	'	'	'
Period of written notice for withdrawals from multi-strategy hedge fund partnerships	'	'	'	'10 days	'	'	'
Excess percentage of withdrawals	'	'	'	25.00%	'	'	'
Percentage of withdrawals of the capital accounts	'	'	'	100.00%	'	'	'
Target funded status percentage	'	'	'	100.00%	'	'	'
Current asset allocation to invest in alternative securities, maximum	'	'	'	20.00%	'	'	'
Domestic defined benefit pension plan	$19,000,000	'	'	$19,000,000	'	'	'
Other defined benefit plan estimated future employer contributions in next fiscal year	2,700,000	'	'	2,700,000	'	'	'
Liability for other post-employment arrangements	80,275,000	'	'	80,275,000	125,978,000	'	'
Company's annual contributions	'	'	'	2,800,000	2,500,000	2,200,000	'
England Pension Plan Defined Benefit [Member]	'	'	'	'	'	'	'
Pension and other post-retirement benefits (Textual) [Abstract]	'	'	'	'	'	'	'
Percent of Company aggregated total fair value of plan assets	4.00%	'	'	4.00%	'	'	'
Foreign Pension Plans Defined Benefit [Member]	'	'	'	'	'	'	'
Pension and other post-retirement benefits (Textual) [Abstract]	'	'	'	'	'	'	'
Liability for other post-employment arrangements	$2,300,000	'	'	$2,300,000	$2,600,000	'	'
Maximum [Member]	'	'	'	'	'	'	'
Pension and other post-retirement benefits (Textual) [Abstract]	'	'	'	'	'	'	'
Maturity of foreign debt securities	'	'	'	'5 years	'	'	'
Minimum [Member]	'	'	'	'	'	'	'
Pension and other post-retirement benefits (Textual) [Abstract]	'	'	'	'	'	'	'
Period of written notice for plan withdrawals from multi-strategy hedge fund partnerships	'	'	'	'30 days	'	'	'
Minimum period of written notice for other withdrawals	'	'	'	'3 months	'	'	'
Equity Securities [Member]	'	'	'	'	'	'	'
Pension and other post-retirement benefits (Textual) [Abstract]	'	'	'	'	'	'	'
Current asset allocation to invest in equity securities, minimum	'	'	'	30.00%	'	'	'
Current asset allocation to invest in equity securities, maximum	'	'	'	70.00%	'	'	'
Fixed Income Funds [Member]	'	'	'	'	'	'	'
Pension and other post-retirement benefits (Textual) [Abstract]	'	'	'	'	'	'	'
Current asset allocation to invest in equity securities, minimum	'	'	'	20.00%	'	'	'
Current asset allocation to invest in equity securities, maximum	'	'	'	50.00%	'	'	'

Contingencies_and_Commitments_1

Contingencies and Commitments (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Undiscounted reserve	'	'
Reserve balance at beginning of year	($5,301)	($5,312)
Expensed	-503	-316
Paid	995	327
Reserve balance at end of year	-4,809	-5,301
Ending balance recorded in:	'	'
Other liabilities and accrued items	-430	-903
Other long-term liabilities	($4,379)	($4,398)

Contingencies_and_Commitments_2

Contingencies and Commitments (Details Textual) (USD $)	3 Months Ended	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
		lb		LegalMatter
		claim		claim
Contingencies And Commitments (Textual) [Abstract]	'	'	'	'
Annual deductible to cover defense and indemnity costs incurred	'	$1,000,000	'	'
Number of CBD cases pending	'	2	'	2
Reserve for outstanding CBD case	'	100,000	'	'
Number of cases settled	'	'	'	1
Case settled	'	'	'	'for less than $0.1 million
Settlement payments (less than $1 million)	'	'	'	100,000
Physical inventory count pre-tax loss	7,400,000	'	'	'
Beryllium copper master alloy purchased	'	775,000	'	'
Purchases Under Committed Contracts	'	1,800,000	5,200,000	8,800,000
Outstanding letters of credit	'	27,300,000	'	'
Insurance Claims [Member]	'	'	'	'
Contingencies And Commitments (Textual) [Abstract]	'	'	'	'
Physical inventory count pre-tax loss	$7,400,000	'	'	'

Common_Stock_and_Stockbased_Co2

Common Stock and Stock-based Compensation (Details)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Reconciliation of the changes in the number of shares of common stock issued	'	'	'
Number of Common Stock Shares Issued, Beginning balance	27,050	27,024	26,968
Exercise of stock options and SARs	114	26	55
Vesting of performance-restricted shares	'	'	1
Number of Common Stock Shares Issued, Ending balance	27,164	27,050	27,024

Common_Stock_and_Stockbased_Co3

Common Stock and Stock-based Compensation (Details 1) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Summary of company's stock option activity	'	'	'
Number of options outstanding, Beginning balance (in shares)	96	'	'
Exercise of stock options (in shares)	-74	-16	-53
Canceled stock options (in shares)	-1	'	'
Number of options outstanding, Ending balance (in shares)	21	96	'
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]	'	'	'
Number of options outstanding, Weighted average Exercise Price Per Share, Beginning of Period	$15.98	'	'
Exercised, Weighted average exercise price per share	$15.60	'	'
Canceled, Weighted average exercise price per share	$10.30	'	'
Number of options outstanding, Weighted Average Exercise Price Per Share, Ending of Period	$17.29	$15.98	'
Number of options, vested and expected to vest (in shares)	21	'	'
Number of options outstanding, exercisable (in shares)	21	'	'
Number of options, vested and expected to vest, Weighted Average Exercise Price Per Share	$17.29	'	'
Number of options outstanding, exercisable, Weighted Average Exercise Price Per Share	$17.29	'	'
Number of options, outstanding, Aggregate Intrinsic Value	$291	'	'
Number of options, vested and expected to vest, Aggregate Intrinsic Value	291	'	'
Number of options, Exercisable, Aggregate Intrinsic Value	$291	'	'
Number of options, outstanding, Weighted Average Remaining Term (Years)	'1 year	'	'
Number of options, vested and expected to vest, Weighted Average Remaining Term (Years)	'1 year	'	'
Number of options, Exercisable, Weighted Average Remaining Term (Years)	'1 year	'	'

Common_Stock_and_Stockbased_Co4

Common Stock and Stock-based Compensation (Details 2) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013
Summary of options outstanding	'
Number of Outstanding and Exercisable options (in shares)	21
Weighted average Remaining Life (Years)	'10 months 24 days
Weighted average Exercise Price (in dollars per share)	$17.29
Range of Exercise Prices One [Member]	'
Summary of options outstanding	'
Range of option prices, Lower range (in dollars per share)	$14.80
Range of option prices, Upper range (in dollars per share)	$14.80
Number of Outstanding and Exercisable options (in shares)	2
Weighted average Remaining Life (Years)	'1 year 3 months 18 days
Weighted average Exercise Price (in dollars per share)	$14.80
Range of Exercise Prices Two [Member]	'
Summary of options outstanding	'
Range of option prices, Lower range (in dollars per share)	$17.08
Range of option prices, Upper range (in dollars per share)	$17.08
Number of Outstanding and Exercisable options (in shares)	4
Weighted average Remaining Life (Years)	'1 month 6 days
Weighted average Exercise Price (in dollars per share)	$17.08
Range of Exercise Prices Three [Member]	'
Summary of options outstanding	'
Range of option prices, Lower range (in dollars per share)	$17.68
Range of option prices, Upper range (in dollars per share)	$17.68
Number of Outstanding and Exercisable options (in shares)	15
Weighted average Remaining Life (Years)	'1 year 1 month 6 days
Weighted average Exercise Price (in dollars per share)	$17.68

Common_Stock_and_Stockbased_Co5

Common Stock and Stock-based Compensation (Details 3) (Restricted Stock [Member], USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Restricted Stock [Member]	'	'	'
Summary of restricted stock activity	'	'	'
Number of options outstanding, Beginning Balance	223	'	'
Number of shares, Granted in Period	67	'	'
Number of shares, Vested in Period	-66	'	'
Number of shares, Forfeited in Period	-24	'	'
Number of options outstanding, Ending Balance	200	223	'
Restricted stock activity - weighted average grant date fair value	'	'	'
Restricted stock Options, Weighted Average Grant Date Fair Value, Beginning balance	$30.18	'	'
Number of restricted stock Options, Granted in Period, Weighted Average Grant Date Fair Value	$27.35	$27.87	$39.18
Number of restricted stock Options, Vested in Period, Weighted Average Grant Date Fair Value	$27.72	'	'
Number of restricted stock Options, Forfeited in Period, Weighted Average Grant Date Fair Value	$29.36	'	'
Restricted stock Options, Weighted Average Grant Date Fair Value, Ending balance	$32.71	$30.18	'

Common_Stock_and_Stockbased_Co6

Common Stock and Stock-based Compensation (Details 4) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Directors' deferred compensation plan, weighted average grant date fair value	'	'	'
Number of shares distributed, Weighted Average Grant Date Fair Value	$15.60	'	'
Deferred Directors Compensation Plan [Member]	'	'	'
Summary of stock activity for the directors deferred compensation plan	'	'	'
Number of options outstanding, Beginning Balance	103	'	'
Number of shares, Granted in Period	15	'	'
Number of shares distributed in period	-17	'	'
Number of options outstanding, Ending Balance	101	103	'
Directors' deferred compensation plan, weighted average grant date fair value	'	'	'
Restricted stock Options, Weighted Average Grant Date Fair Value, Beginning balance	$22.28	'	'
Number of restricted stock Options, Granted in Period, Weighted Average Grant Date Fair Value	$26.99	$23.10	$38
Number of shares distributed, Weighted Average Grant Date Fair Value	$20.32	'	'
Restricted stock Options, Weighted Average Grant Date Fair Value, Ending balance	$23.74	$22.28	'

Common_Stock_and_Stockbased_Co7

Common Stock and Stock-based Compensation (Details 5) (SARs Activity [Member], USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013
SARs Activity [Member]	'
Summary of Company's SARs activity	'
Number of options outstanding, Beginning Balance	993
Number of shares, Granted in Period	147
Number of shares, Exercised In Period	-145
Number of shares, Forfeited in Period	-11
Number of options outstanding, Ending Balance	984
Number of options outstanding, vested and expected to vest	984
Number of options outstanding, exercisable	511
Number of options outstanding, Weighted Average Exercise Price Per Share, Beginning of Period	$24.80
Number of options, Granted in Period, Weighted Average Exercise Price Per Share	$28.32
Number of options exercised, Weighted Average Exercise Price Per Share	$17.42
Number of options canceled, Weighted Average Exercise Price Per Share	$31.90
Number of options outstanding, Weighted Average Exercise Price Per Share, End of Period	$26.34
Number of options outstanding, Weighted Average Exercise Price Per Share, vested and expected to vest	$26.34
Number of options outstanding, exercisable, Weighted Average Exercise Price Per Share	$20.94
Number of options, outstanding, Aggregate Intrinsic Value	$6,211
Number of options, vested and expected to vest, Aggregate Intrinsic Value	6,211
Number of options, exercisable, Aggregate Intrinsic Value	$5,592
Number of options, outstanding, Weighted Average Remaining Contractual Term	'5 years
Number of options, vested and expected to vest, Weighted Average Remaining Contractual Term	'5 years
Number of options, exercisable, Weighted Average Remaining Contractual Term	'4 years 8 months

Common_Stock_and_Stockbased_Co8

Common Stock and Stock-based Compensation (Details 6) (USD $)	12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013
SARs Activity [Member]	'
Summary of information on SARs outstanding	'
Number of Outstanding Options (in shares)	984
Weighted average Remaining Life (Years)	'5 years
Weighted average Exercise Price (in dollars per share)	$26.34
Range of Exercise Prices One [Member]	'
Summary of information on SARs outstanding	'
SARs Prices, Lower range (in dollars per share)	$14.80
SARs Prices, Upper range (in dollars per share)	$14.80
Range of Exercise Prices One [Member] | SARs Activity [Member]	'
Summary of information on SARs outstanding	'
SARs Prices, Lower range (in dollars per share)	$15.01
SARs Prices, Upper range (in dollars per share)	$15.01
Number of Outstanding Options (in shares)	221
Weighted average Remaining Life (Years)	'4 years 10 months
Weighted average Exercise Price (in dollars per share)	$15.01
Summary of information on SARs outstanding	'
SARs exercise price (in dollars per share)	$15.01
Range of Exercise Prices Two [Member]	'
Summary of information on SARs outstanding	'
SARs Prices, Lower range (in dollars per share)	$17.08
SARs Prices, Upper range (in dollars per share)	$17.08
Range of Exercise Prices Two [Member] | SARs Activity [Member]	'
Summary of information on SARs outstanding	'
SARs Prices, Lower range (in dollars per share)	$21.24
SARs Prices, Upper range (in dollars per share)	$24.03
Number of Outstanding Options (in shares)	223
Weighted average Remaining Life (Years)	'5 years
Weighted average Exercise Price (in dollars per share)	$21.87
Summary of information on SARs outstanding	'
SARs exercise price (in dollars per share)	$24.03
Range of Exercise Prices Three [Member]	'
Summary of information on SARs outstanding	'
SARs Prices, Lower range (in dollars per share)	$17.68
SARs Prices, Upper range (in dollars per share)	$17.68
Range of Exercise Prices Three [Member] | SARs Activity [Member]	'
Summary of information on SARs outstanding	'
SARs Prices, Lower range (in dollars per share)	$27.78
SARs Prices, Upper range (in dollars per share)	$29.45
Number of Outstanding Options (in shares)	353
Weighted average Remaining Life (Years)	'5 years 6 months
Weighted average Exercise Price (in dollars per share)	$28.86
Summary of information on SARs outstanding	'
SARs exercise price (in dollars per share)	$27.78
Range of Exercise Prices Five [Member]	'
Summary of information on SARs outstanding	'
SARs Prices, Lower range (in dollars per share)	$34.30
SARs Prices, Upper range (in dollars per share)	$39.30
Range of Exercise Prices Five [Member] | SARs Activity [Member]	'
Summary of information on SARs outstanding	'
Number of Outstanding Options (in shares)	148
Weighted average Remaining Life (Years)	'4 years 5 months
Weighted average Exercise Price (in dollars per share)	$39.19
Range of Exercise Prices Six [Member] | SARs Activity [Member]	'
Summary of information on SARs outstanding	'
SARs Prices, Lower range (in dollars per share)	$44.72
SARs Prices, Upper range (in dollars per share)	$44.72
Number of Outstanding Options (in shares)	39
Weighted average Remaining Life (Years)	'3 years
Weighted average Exercise Price (in dollars per share)	$44.72
Summary of information on SARs outstanding	'
SARs exercise price (in dollars per share)	$44.72

Common_Stock_and_Stockbased_Co9

Common Stock and Stock-based Compensation (Details 7) (SARs Activity [Member])	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
SARs Activity [Member]	'	'	'
Fair value of SARs using Black-Scholes pricing model	'	'	'
Risk-free interest rate	0.70%	0.89%	0.03%
Dividend yield	1.10%	0.00%	0.00%
Volatility	56.60%	50.00%	58.70%
Expected lives (in years)	'5 years	'5 years	'6 years 6 months

Recovered_Sheet2

Common Stock and Stock-based Compensation (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Common Stock and Stock-based Compensation (Textual) [Abstract]	'	'	'
Serial preferred stock, shares authorized	5,000,000	5,000,000	'
Serial preferred stock, par value	'	'	'
Serial preferred stock, shares issued	'	'	'
Stock Options [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock appreciation rights vested period	'4 years	'	'
Expire period of option rights granted to non employees	'10 years	'	'
Total cash received from the exercise of stock options	$1,200,000	$200,000	$700,000
Tax benefit realized from tax deductions	500,000	100,000	500,000
Total intrinsic value of options exercised	1,000,000	300,000	1,400,000
Restricted Stock [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Amortization period	'3 years	'	'
Amount of weighted average grant date fair value	$27.35	$27.87	$39.18
Compensation cost	2,500,000	2,700,000	2,500,000
Unvested outstanding options	2,400,000	'	'
Expected amortization weighted average period	'18 months	'	'
Tax benefit from vesting of restricted stock	200,000	700,000	200,000
Stock Appreciation Rights (SARs) [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock appreciation rights vested period	'3 years	'	'
Amount of weighted average grant date fair value	$12.54	'	'
Compensation cost	2,400,000	2,800,000	2,500,000
Unvested outstanding options	2,600,000	'	'
Basis of risk-free rate of return	'5 years	'	'
Duration of month-end Company share closing prices prior to granting of SARs used in calculating share price volatility	'10 years	'	'
Stock Appreciation Rights (SARs) [Member] | Range of Exercise Prices One [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock appreciation rights granted	$15.01	'	'
Stock Appreciation Rights (SARs) [Member] | Range of Exercise Prices Two [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock appreciation rights granted	$24.03	'	'
Stock Appreciation Rights (SARs) [Member] | Range of Exercise Prices Three [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock appreciation rights granted	$27.78	'	'
Stock Appreciation Rights (SARs) [Member] | Range of Exercise Prices Six [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Stock appreciation rights granted	$44.72	'	'
Long Term Incentive Plans [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Compensation cost	800,000	400,000	0
Period in which employees receive cash or stock awards	'3 years	'	'
Compensation expense plan period	'3 years	'	'
Deferred Directors Compensation Plan [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Expire period of option rights granted to non employees	'10 years	'	'
Exercisable short term period of option rights granted to non employees	'6 months	'	'
Amount of weighted average grant date fair value	$26.99	$23.10	$38
Deferred compensation plan expense	$0	$0	$0
Granted Prior To 2011 [Member] | Stock Appreciation Rights (SARs) [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Expire period of option rights granted to non employees	'10 years	'	'
Granted in 2011 and Later [Member] | Stock Appreciation Rights (SARs) [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Expire period of option rights granted to non employees	'7 years	'	'

Accumulated_Other_Comprehensiv2

Accumulated Other Comprehensive Income (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accumulated Other Comprehensive Income (Loss) [Roll Forward]	'	'	'
Gross	($123,114)	($98,839)	($66,995)
Deferred tax (benefit)	-34,685	-26,624	-15,379
Net	-88,429	-72,215	-51,616
Current year activity:	'	'	'
Other comprehensive income (loss) before reclassifications	39,385	-28,391	-38,202
Amounts reclassified from accumulated other comprehensive income	6,609	4,116	6,358
Net current period other comprehensive income (loss)	45,994	-24,275	-31,844
Deferred tax on current period activity	17,453	-8,061	-11,245
Subtotal activity	28,541	-16,214	-20,599
Gross	-77,120	-123,114	-98,839
Deferred tax expense (benefit)	-17,232	-34,685	-26,624
Net	-59,888	-88,429	-72,215
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]	'	'	'
Accumulated Other Comprehensive Income (Loss) [Roll Forward]	'	'	'
Gross	350	1,450	-1,543
Deferred tax (benefit)	-1,280	-895	-1,942
Net	1,630	2,345	399
Current year activity:	'	'	'
Other comprehensive income (loss) before reclassifications	622	141	184
Amounts reclassified from accumulated other comprehensive income	-1,078	-1,241	2,809
Net current period other comprehensive income (loss)	-456	-1,100	2,993
Deferred tax on current period activity	-160	-385	1,047
Subtotal activity	-296	-715	1,946
Gross	-106	350	1,450
Deferred tax expense (benefit)	-1,440	-1,280	-895
Net	1,334	1,630	2,345
Accumulated Defined Benefit Plans Adjustment [Member]	'	'	'
Accumulated Other Comprehensive Income (Loss) [Roll Forward]	'	'	'
Gross	-127,541	-105,236	-69,441
Deferred tax (benefit)	-33,405	-25,729	-13,437
Net	-94,136	-79,507	-56,004
Current year activity:	'	'	'
Other comprehensive income (loss) before reclassifications	42,553	-27,662	-39,344
Amounts reclassified from accumulated other comprehensive income	7,687	5,357	3,549
Net current period other comprehensive income (loss)	50,240	-22,305	-35,795
Deferred tax on current period activity	17,613	-7,676	-12,292
Subtotal activity	32,627	-14,629	-23,503
Gross	-77,301	-127,541	-105,236
Deferred tax expense (benefit)	-15,792	-33,405	-25,729
Net	-61,509	-94,136	-79,507
Accumulated Translation Adjustment [Member]	'	'	'
Accumulated Other Comprehensive Income (Loss) [Roll Forward]	'	'	'
Gross	-4,077	4,947	3,989
Deferred tax (benefit)	0	0	0
Net	-4,077	4,947	3,989
Current year activity:	'	'	'
Other comprehensive income (loss) before reclassifications	-3,790	-870	958
Amounts reclassified from accumulated other comprehensive income	0	0	0
Net current period other comprehensive income (loss)	-3,790	-870	958
Deferred tax on current period activity	0	0	0
Subtotal activity	-3,790	-870	958
Gross	287	-4,077	4,947
Deferred tax expense (benefit)	0	0	0
Net	287	-4,077	4,947
Foreign Exchange Forward [Member] | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]	'	'	'
Accumulated Other Comprehensive Income (Loss) [Roll Forward]	'	'	'
Gross	253	1,399	-1,543
Deferred tax (benefit)	-1,314	-913	-1,942
Net	1,567	2,312	399
Current year activity:	'	'	'
Other comprehensive income (loss) before reclassifications	618	693	133
Amounts reclassified from accumulated other comprehensive income	-958	-1,839	2,809
Net current period other comprehensive income (loss)	-340	-1,146	2,942
Deferred tax on current period activity	-119	-401	1,029
Subtotal activity	-221	-745	1,913
Gross	-87	253	1,399
Deferred tax expense (benefit)	-1,433	-1,314	-913
Net	1,346	1,567	2,312
Precious Metal Contracts [Member] | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]	'	'	'
Accumulated Other Comprehensive Income (Loss) [Roll Forward]	'	'	'
Gross	97	51	0
Deferred tax (benefit)	34	18	0
Net	63	33	0
Current year activity:	'	'	'
Other comprehensive income (loss) before reclassifications	4	-552	51
Amounts reclassified from accumulated other comprehensive income	-120	598	0
Net current period other comprehensive income (loss)	-116	46	51
Deferred tax on current period activity	-41	16	18
Subtotal activity	-75	30	33
Gross	-19	97	51
Deferred tax expense (benefit)	-7	34	18
Net	($12)	$63	$33

Segment_Reporting_and_Geograph2

Segment Reporting and Geographic Information (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Sep. 27, 2013	Jun. 28, 2013	Mar. 29, 2013	Dec. 31, 2012	Sep. 28, 2012	Jun. 29, 2012	Mar. 30, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting and Geographic Information	'	'	'	'	'	'	'	'	'	'	'
Sales to external customers	$286,138	$275,434	$306,141	$299,169	$303,759	$290,601	$325,088	$353,630	$1,166,882	$1,273,078	$1,526,730
Intersegment sales	'	'	'	'	'	'	'	'	5,607	6,686	9,188
Operating profit (loss)	'	'	'	'	'	'	'	'	26,831	36,776	57,078
Depreciation, depletion and amortization	'	'	'	'	'	'	'	'	41,649	37,046	43,635
Expenditures for long-lived assets	'	'	'	'	'	'	'	'	32,624	44,661	28,747
Assets	777,945	'	'	'	814,917	'	'	'	777,945	814,917	772,103
Advanced Material Technologies [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting and Geographic Information	'	'	'	'	'	'	'	'	'	'	'
Sales to external customers	'	'	'	'	'	'	'	'	744,240	847,835	1,051,823
Intersegment sales	'	'	'	'	'	'	'	'	2,463	2,556	2,493
Operating profit (loss)	'	'	'	'	'	'	'	'	4,661	16,749	33,471
Depreciation, depletion and amortization	'	'	'	'	'	'	'	'	17,483	16,282	16,170
Expenditures for long-lived assets	'	'	'	'	'	'	'	'	10,942	11,874	8,014
Assets	306,291	'	'	'	341,604	'	'	'	306,291	341,604	342,819
Performance Alloys [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting and Geographic Information	'	'	'	'	'	'	'	'	'	'	'
Sales to external customers	'	'	'	'	'	'	'	'	292,189	292,448	335,323
Intersegment sales	'	'	'	'	'	'	'	'	2,054	2,718	3,771
Operating profit (loss)	'	'	'	'	'	'	'	'	23,384	24,004	27,241
Depreciation, depletion and amortization	'	'	'	'	'	'	'	'	17,683	14,994	22,324
Expenditures for long-lived assets	'	'	'	'	'	'	'	'	13,463	19,906	10,599
Assets	264,521	'	'	'	269,003	'	'	'	264,521	269,003	235,547
Beryllium and Composites [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting and Geographic Information	'	'	'	'	'	'	'	'	'	'	'
Sales to external customers	'	'	'	'	'	'	'	'	61,338	59,983	60,557
Intersegment sales	'	'	'	'	'	'	'	'	330	740	757
Operating profit (loss)	'	'	'	'	'	'	'	'	-3,526	-3,944	-754
Depreciation, depletion and amortization	'	'	'	'	'	'	'	'	2,760	1,883	1,367
Expenditures for long-lived assets	'	'	'	'	'	'	'	'	3,215	7,962	6,460
Assets	142,390	'	'	'	135,414	'	'	'	142,390	135,414	127,708
Technical Materials [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting and Geographic Information	'	'	'	'	'	'	'	'	'	'	'
Sales to external customers	'	'	'	'	'	'	'	'	69,115	72,733	78,732
Intersegment sales	'	'	'	'	'	'	'	'	760	672	2,167
Operating profit (loss)	'	'	'	'	'	'	'	'	6,897	6,608	7,262
Depreciation, depletion and amortization	'	'	'	'	'	'	'	'	2,590	2,609	2,459
Expenditures for long-lived assets	'	'	'	'	'	'	'	'	1,663	3,604	2,286
Assets	21,795	'	'	'	23,328	'	'	'	21,795	23,328	21,502
Subtotal [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting and Geographic Information	'	'	'	'	'	'	'	'	'	'	'
Sales to external customers	'	'	'	'	'	'	'	'	1,166,882	1,272,999	1,526,435
Intersegment sales	'	'	'	'	'	'	'	'	5,607	6,686	9,188
Operating profit (loss)	'	'	'	'	'	'	'	'	31,416	43,417	67,220
Depreciation, depletion and amortization	'	'	'	'	'	'	'	'	40,516	35,768	42,320
Expenditures for long-lived assets	'	'	'	'	'	'	'	'	29,283	43,346	27,359
Assets	734,997	'	'	'	769,349	'	'	'	734,997	769,349	727,576
All Other [Member]	'	'	'	'	'	'	'	'	'	'	'
Segment Reporting and Geographic Information	'	'	'	'	'	'	'	'	'	'	'
Sales to external customers	'	'	'	'	'	'	'	'	0	79	295
Operating profit (loss)	'	'	'	'	'	'	'	'	-4,585	-6,641	-10,142
Depreciation, depletion and amortization	'	'	'	'	'	'	'	'	1,133	1,278	1,315
Expenditures for long-lived assets	'	'	'	'	'	'	'	'	3,341	1,315	1,388
Assets	$42,948	'	'	'	$45,568	'	'	'	$42,948	$45,568	$44,527

Segment_Reporting_and_Geograph3

Segment Reporting and Geographic Information (Details 1) (USD $)	3 Months Ended								12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Sep. 27, 2013	Jun. 28, 2013	Mar. 29, 2013	Dec. 31, 2012	Sep. 28, 2012	Jun. 29, 2012	Mar. 30, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Sales and long-lived assets attributed to countries based upon the location of customers	'	'	'	'	'	'	'	'	'	'	'
Sales from U.S. operations	'	'	'	'	'	'	'	'	$962,288	$1,064,779	$1,306,192
Sales based upon location of customers	286,138	275,434	306,141	299,169	303,759	290,601	325,088	353,630	1,166,882	1,273,078	1,526,730
Long-lived assets by country deployed	374,894	'	'	'	390,164	'	'	'	374,894	390,164	382,429
United States [Member]	'	'	'	'	'	'	'	'	'	'	'
Sales and long-lived assets attributed to countries based upon the location of customers	'	'	'	'	'	'	'	'	'	'	'
Sales based upon location of customers	'	'	'	'	'	'	'	'	810,642	881,968	1,143,720
Long-lived assets by country deployed	340,922	'	'	'	354,122	'	'	'	340,922	354,122	349,988
All other [Member]	'	'	'	'	'	'	'	'	'	'	'
Sales and long-lived assets attributed to countries based upon the location of customers	'	'	'	'	'	'	'	'	'	'	'
Sales based upon location of customers	'	'	'	'	'	'	'	'	356,240	391,110	383,010
Long-lived assets by country deployed	$33,972	'	'	'	$36,042	'	'	'	$33,972	$36,042	$32,441

Segment_Reporting_and_Geograph4

Segment Reporting and Geographic Information (Details Textual)	12 Months Ended
	Dec. 31, 2013
Segment Reporting And Geographic Information (Textual) [Abstract]	'
Percentage of customers accounted for the company's sale	10.00%

Othernet_Details

Other-net (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Summary of other-net expense	'	'	'
Foreign currency exchange/translation gain (loss)	$1,506	$1,477	($2,775)
Amortization of intangible assets	-5,529	-6,008	-6,144
Metal consignment fees	-7,218	-9,011	-9,877
Changes to earn-out valuation	0	0	1,052
Net loss on disposal of fixed assets	-1,459	-1,836	0
Consignment facility renegotiation bank fee	-853	0	0
Other items	-909	-231	1,970
Total	($14,462)	($15,609)	($15,774)

Facility_Consolidation_Details

Facility Consolidation (Details) (Facility Closing [Member], USD $)	3 Months Ended			12 Months Ended
	Dec. 31, 2013	Sep. 27, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
	operation	facility	facility		facility
Restructuring Cost and Reserve [Line Items]	'	'	'	'	'
Number of facilities closed	'	1	1	'	2
Number of operations consolidated	1	'	'	'	'
Costs associated with consolidation program	'	'	'	$5,990,000	$4,776,000
Equipment write-offs	'	'	'	1,200,000	1,600,000
Additional expenditures in next fiscal year	'	'	'	500,000	'
Cost of Sales [Member]	'	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'	'
Costs associated with consolidation program	'	'	'	1,812,000	1,559,000
Selling, General and Administrative Expenses [Member]	'	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'	'
Costs associated with consolidation program	'	'	'	2,805,000	1,614,000
Other Expense [Member]	'	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'	'
Costs associated with consolidation program	'	'	'	1,373,000	1,603,000
Employee Severance and Other Employee Costs [Member]	'	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'	'
Costs associated with consolidation program	'	'	'	$2,000,000	'
Previous [Member]	'	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'	'
Number of buildings included in consolidation	4	'	'	'	'
Current [Member]	'	'	'	'	'
Restructuring Cost and Reserve [Line Items]	'	'	'	'	'
Number of buildings included in consolidation	2	'	'	'	'

Interest_Details

Interest (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Summarized of interest incurred, capitalized and paid as well as the amortization of capitalized interest	'	'	'
Interest incurred	$3,286	$3,334	$2,860
Less capitalized interest	250	200	48
Total net expense	3,036	3,134	2,812
Interest paid	2,671	2,639	2,211
Amortization of capitalized interest included in cost of sales	$265	$336	$441

Interest_Details_Textual

Interest (Details Textual) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Interest (Textual) [Abstract]	'	'	'
Amortization of deferred financing costs	$679	$649	$559

Income_Taxes_Details

Income Taxes (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income before income taxes:	'	'	'
Domestic	$16,528	$23,379	$53,648
Foreign	7,267	10,263	618
Income before income taxes	$23,795	$33,642	$54,266

Income_Taxes_Details_1

Income Taxes (Details 1) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Current income taxes:	'	'	'
Domestic	$4,325	$7,825	$15,487
Foreign	2,205	3,615	468
Total current	6,530	11,440	15,955
Deferred income taxes (benefit):	'	'	'
Domestic	-2,958	-3,084	-2,710
Foreign	319	-44	-351
Valuation allowance	197	666	1,393
Total deferred	-2,442	-2,462	-1,668
Total income taxes	$4,088	$8,978	$14,287

Income_Taxes_Details_2

Income Taxes (Details 2)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Reconciliation of the federal statutory and effective income tax rate	'	'	'
Federal statutory rate	35.00%	35.00%	35.00%
State and local income taxes, net of federal tax effect	-0.80%	-0.30%	0.70%
Effect of excess of percentage depletion over cost depletion	-11.80%	-7.30%	-3.90%
Manufacturing production deduction	-2.40%	-2.20%	-3.50%
Officers’ compensation	0.40%	1.10%	0.70%
Adjustment to unrecognized tax benefits	0.30%	-0.60%	-3.40%
Foreign rate differential	-0.10%	-0.10%	-0.20%
Research and experimentation tax credit	-7.40%	0.00%	-1.00%
Retiree medical expense	0.00%	-2.00%	0.00%
Valuation allowance	0.80%	2.00%	2.50%
Other items	3.20%	1.10%	-0.60%
Effective tax rate	17.20%	26.70%	26.30%

Income_Taxes_Details_3

Income Taxes (Details 3) (USD $)	Dec. 31, 2013	Dec. 31, 2012
In Thousands, unless otherwise specified
Asset (liability)	'	'
Post-retirement benefits other than pensions	$10,989	$12,003
Other reserves	13,744	12,804
Environmental reserves	1,789	1,958
Inventory	3,934	4,303
Pensions	9,867	27,547
Net operating loss and credit carryforwards	5,588	5,186
Miscellaneous	303	357
Subtotal	46,214	64,158
Valuation allowance	-4,782	-4,584
Total deferred tax assets	41,432	59,574
Depreciation	-18,669	-19,388
Amortization	-7,371	-7,939
Capitalized interest expense	-184	-195
Mine development	-2,309	-2,832
Derivative instruments and hedging activities	-130	-168
Total deferred tax liabilities	-28,663	-30,522
Net deferred tax asset	$12,769	$29,052

Income_Taxes_Details_4

Income Taxes (Details 4) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Reconciliation of unrecognized tax benefits	'	'
Balance as of January 1	$1,767	$1,969
Additions to tax provisions related to the current year	0	149
Additions to tax positions related to prior years	484	174
Reduction to tax positions related to prior years	-17	-20
Lapses on statutes of limitations	-555	-455
Settlements	0	-50
Balance as of December 31	$1,679	$1,767

Income_Taxes_Details_Textual

Income Taxes (Details Textual) (USD $)	12 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Taxes (Textual) [Abstract]	'	'	'
State and local income taxes	($0.20)	($0.10)	$0.60
Foreign income tax payments (refunds)	8.2	13.2	20.7
Amount of unrecognized tax benefits	1.7	'	'
Effective tax rate if recognized	0.8	'	'
Undistributed foreign earnings	49	'	'
Foreign Country [Member]	'	'	'
Operating Loss Carryforwards [Line Items]	'	'	'
Foreign net operating loss carryforwards, do not expire	4.9	'	'
Foreign net operating loss carryforwards	10.5	'	'
State and Local Jurisdiction [Member]	'	'	'
Operating Loss Carryforwards [Line Items]	'	'	'
Foreign net operating loss carryforwards	23.6	'	'
State tax credits, expire in calendar years 2012 through 2026	$2.70	'	'

Earnings_Per_Share_Details

Earnings Per Share (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Sep. 27, 2013	Jun. 28, 2013	Mar. 29, 2013	Dec. 31, 2012	Sep. 28, 2012	Jun. 29, 2012	Mar. 30, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Numerator for basic and diluted EPS	'	'	'	'	'	'	'	'	'	'	'
Net income	$3,775	$4,992	$4,155	$6,785	$2,503	$8,114	$7,929	$6,118	$19,707	$24,664	$39,979
Denominator for basic EPS:	'	'	'	'	'	'	'	'	'	'	'
Weighted-average shares outstanding (in shares)	'	'	'	'	'	'	'	'	20,571	20,418	20,365
Effective of dilutive securities:	'	'	'	'	'	'	'	'	'	'	'
Stock options and stock appreciation rights (in shares)	'	'	'	'	'	'	'	'	188	163	237
Restricted stock (in shares)	'	'	'	'	'	'	'	'	101	94	152
Performance-based restricted shares (in shares)	'	'	'	'	'	'	'	'	35	4	0
Diluted potential common shares (in shares)	'	'	'	'	'	'	'	'	324	261	389
Denominator for diluted EPS:	'	'	'	'	'	'	'	'	'	'	'
Adjusted weighted-average shares outstanding (in shares)	'	'	'	'	'	'	'	'	20,895	20,679	20,754
Basic EPS (in dollars per share)	$0.18	$0.24	$0.20	$0.33	$0.12	$0.40	$0.39	$0.30	$0.96	$1.21	$1.96
Diluted EPS (in dollars per share)	$0.18	$0.24	$0.20	$0.33	$0.12	$0.39	$0.38	$0.30	$0.94	$1.19	$1.93

Earnings_Per_Share_Details_1

Earnings Per Share (Details 1) (Stock Appreciation Rights (SARs) [Member])	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Stock Appreciation Rights (SARs) [Member]	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'
Stock appreciation rights excluded from diluted EPS calculation	368	465	152

Quarterly_Data_Unaudited_Detai

Quarterly Data (Unaudited) (Details) (USD $)	3 Months Ended								12 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Sep. 27, 2013	Jun. 28, 2013	Mar. 29, 2013	Dec. 31, 2012	Sep. 28, 2012	Jun. 29, 2012	Mar. 30, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Summary of selected quarterly financial data	'	'	'	'	'	'	'	'	'	'	'
Net sales	$286,138	$275,434	$306,141	$299,169	$303,759	$290,601	$325,088	$353,630	$1,166,882	$1,273,078	$1,526,730
Gross margin	49,164	44,483	45,992	48,339	43,972	52,369	53,024	49,418	187,978	198,783	215,321
Percent of sales	17.20%	16.20%	15.00%	16.20%	14.50%	18.00%	16.30%	14.00%	16.10%	15.60%	'
Net income	$3,775	$4,992	$4,155	$6,785	$2,503	$8,114	$7,929	$6,118	$19,707	$24,664	$39,979
Net income per share of common stock:	'	'	'	'	'	'	'	'	'	'	'
Basic (in dollars per share)	$0.18	$0.24	$0.20	$0.33	$0.12	$0.40	$0.39	$0.30	$0.96	$1.21	$1.96
Diluted (in dollars per share)	$0.18	$0.24	$0.20	$0.33	$0.12	$0.39	$0.38	$0.30	$0.94	$1.19	$1.93
Cash dividends per share of common stock	$0.08	$0.08	$0.08	$0.08	$0.08	$0.08	$0.08	$0	$0.32	$0.23	$0
Stock price range:	'	'	'	'	'	'	'	'	'	'	'
High (in dollars per share)	$32.73	$33.69	$31.49	$29.81	$25.93	$25.57	$29.37	$32.91	'	'	'
Low (in dollars per share)	$25.75	$27.09	$24.58	$26.20	$18.84	$17.59	$20.37	$24.77	'	'	'

Quarterly_Data_Unaudited_Detai1

Quarterly Data (Unaudited) (Details Textual) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 27, 2013	Jun. 28, 2013	Mar. 29, 2013	Dec. 31, 2012	Sep. 28, 2012	Jun. 29, 2012	Mar. 30, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
	facility
Number of facilities where accounting error occurred	1	'	'	'	'	'	'	'	'	'	'
Correction to previously reported gross margin	($49,164,000)	($44,483,000)	($45,992,000)	($48,339,000)	($43,972,000)	($52,369,000)	($53,024,000)	($49,418,000)	($187,978,000)	($198,783,000)	($215,321,000)
Correction to reduce previously reported net income	-3,775,000	-4,992,000	-4,155,000	-6,785,000	-2,503,000	-8,114,000	-7,929,000	-6,118,000	-19,707,000	-24,664,000	-39,979,000
Correction to reduce previously reported earnings per share diluted (in dollars per share)	($0.18)	($0.24)	($0.20)	($0.33)	($0.12)	($0.39)	($0.38)	($0.30)	($0.94)	($1.19)	($1.93)
Pre-tax net inventory loss	'	'	'	'	7,400,000	'	'	'	'	'	'
Procedural Errors In Reconciliation of Physical Inventory [Member] | Restatement Adjustment [Member]	'	'	'	'	'	'	'	'	'	'	'
Correction to previously reported gross margin	'	700,000	6,800,000	'	'	'	'	'	'	'	'
Correction to reduce previously reported net income	'	$100,000	$4,800,000	'	'	'	'	'	'	'	'
Correction to reduce previously reported earnings per share diluted (in dollars per share)	'	'	$0.23	'	'	'	'	'	'	'	'

Recovered_Sheet3

Valuation and Qualifying Accounts (Details) (USD $)	12 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Allowance for doubtful accounts receivable [Member]	'		'		'
Deducted from asset accounts:	'		'		'
Balance at Beginning of Period	$1,403		$1,490		$1,452
Charged to Costs and Expenses	127		560		285
Charged to Other Accounts-Describe	-12		-305		0
Deduction-Describe	97	[1]	342	[1]	247	[1]
Balance at End of Period	1,421		1,403		1,490
Inventory reserves and obsolescence [Member]	'		'		'
Deducted from asset accounts:	'		'		'
Balance at Beginning of Period	5,872		6,336		4,607
Charged to Costs and Expenses	5,250		3,935		878
Charged to Other Accounts-Describe	0		0		1,332	[2]
Deduction-Describe	4,789	[3]	4,399	[3]	481	[3]
Balance at End of Period	$6,333		$5,872		$6,336
[1]	Bad debts written-off, net of recoveries
[2]	Beginning balance from acquisition
[3]	Inventory write-off