Employee Benefits, Textuals (Details) (USD $) | 9 Months Ended | 12 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended | 9 Months Ended | 9 Months Ended | 9 Months Ended | 9 Months Ended | 9 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Sep. 30, 2011 | Sep. 30, 2010 | Mar. 23, 2012 | Dec. 31, 2010 | Sep. 30, 2011
Minimum [Member]
Hired Prior to 1/1/2004 [Member]
Defined Contribution Plan [Member]
Salaried And Certain Hourly Employee [Member]
Fixed Rate Contributions [Member] | Sep. 30, 2011
Minimum [Member]
Hired Prior to 1/1/2004 [Member]
Defined Contribution Plan [Member]
Hourly Bargaining Unit Employees [Member]
Fixed Rate Contributions [Member] | Sep. 30, 2011
Hired Prior to 1/1/2004 [Member]
Defined Contribution Plan [Member]
Salaried And Certain Hourly Employee [Member]
Fixed Rate Contributions [Member]
Maximum [Member] | Sep. 30, 2011
Hired Prior to 1/1/2004 [Member]
Defined Contribution Plan [Member]
Hourly Bargaining Unit Employees [Member]
Fixed Rate Contributions [Member]
Maximum [Member] | Sep. 30, 2011
Hired on or after 1/1/2004 [Member]
Defined Contribution Plan [Member]
Salaried And Certain Hourly Employee [Member]
Fixed Rate Contributions [Member] | Sep. 30, 2011
Hired on or after 1/1/2004 [Member]
Defined Contribution Plan [Member]
Hourly Bargaining Unit Employees [Member]
Fixed Rate Contributions [Member] | Sep. 30, 2011
Starting July 2010 until July 2015 [Member]
Multiemployer Pension Plans [Member]
Newark Ohio and Spokane Washington Facilities [Member] | Sep. 30, 2011
Starting July 2015 [Member]
Multiemployer Pension Plans [Member]
Newark Ohio and Spokane Washington Facilities [Member] | Sep. 30, 2011
Veba [Member] | Sep. 30, 2011
Veba [Member]
Annual Cash Flows up to Twenty Million Dollars [Member]
Variable Cash Contribution [Member] | Sep. 30, 2011
Veba [Member]
Annual Cash Flows in Excess of Twenty Million Dollars [Member]
Variable Cash Contribution [Member] | Mar. 31, 2011
Veba [Member]
Additional Amount [Member]
Variable Cash Contribution [Member] | Dec. 31, 2010
Veba [Member]
Variable Cash Contribution [Member] | Sep. 30, 2011
Veba [Member]
Variable Cash Contribution [Member]
Maximum [Member] | Sep. 30, 2011
Veba [Member]
Maximum [Member] | Sep. 30, 2011
Union VEBA [Member]
trustrees | Sep. 30, 2010
Union VEBA [Member] | Mar. 23, 2012
Union VEBA [Member] | Sep. 30, 2011
Union VEBA [Member]
Company Appointed [Member]
trustrees | Sep. 30, 2011
Union VEBA [Member]
USW Appointed [Member]
trustrees | Dec. 31, 2010
Union VEBA [Member]
Variable Cash Contribution [Member] | Dec. 31, 2010
Salaried VEBA [Member]
Variable Cash Contribution [Member] | Sep. 30, 2011
Minimum [Member]
Multiemployer Pension Plans [Member] | Sep. 30, 2011
Multiemployer Pension Plans [Member] | Sep. 30, 2011
Multiemployer Pension Plans [Member]
Florence Alabama Facility [Member] | Sep. 30, 2011
Multiemployer Pension Plans [Member]
Maximum [Member] | Sep. 30, 2011
Defined Benefit Plan [Member]
Salaried Employee [Member]
London Ontario Facility [Member] | Dec. 31, 2010
Defined Benefit Plan [Member]
Salaried Employee [Member]
London Ontario Facility [Member] | Sep. 30, 2011
Minimum [Member]
Defined Contribution Plan [Member]
Salaried And Certain Hourly Employee [Member] | Sep. 30, 2011
Minimum [Member]
Defined Contribution Plan [Member]
Hourly Bargaining Unit Employees [Member] | Sep. 30, 2011
Minimum [Member]
Defined Contribution Plan [Member]
Hourly Bargaining Unit Employees [Member]
Fixed Rate Contributions [Member] | Sep. 30, 2011
Defined Contribution Plan [Member]
Salaried And Certain Hourly Employee [Member]
Concurrent Match [Member] | Sep. 30, 2011
Defined Contribution Plan [Member]
Salaried And Certain Hourly Employee [Member]
Maximum [Member] | Sep. 30, 2011
Defined Contribution Plan [Member]
Hourly Bargaining Unit Employees [Member]
productionfacilities | Sep. 30, 2011
Defined Contribution Plan [Member]
Hourly Bargaining Unit Employees [Member]
Fixed Rate Contributions [Member]
productionfacilities | Sep. 30, 2011
Defined Contribution Plan [Member]
Hourly Bargaining Unit Employees [Member]
Fixed Rate Contributions [Member]
Maximum [Member] | Sep. 30, 2011
Defined Contribution Plan [Member]
Hourly Bargaining Unit Employees [Member]
Concurrent Match [Member]
productionfacilities | Sep. 30, 2011
Defined Contribution Plan [Member]
Hourly Bargaining Unit Employees [Member]
Fixed Rate Contributions and Concurrent Match [Member]
productionfacilities | Sep. 30, 2011
Defined Contribution Plan [Member]
Hourly Bargaining Unit Employees [Member]
No Contributions Required [Member]
productionfacilities | Sep. 30, 2011
Defined Contribution Plan [Member]
Hourly Bargaining Unit Employees [Member]
Maximum [Member] | Sep. 30, 2011
Additional Paid-in Capital [Member] | Sep. 30, 2010
Additional Paid-in Capital [Member] | Sep. 30, 2011
Common Stock Owned by Union VEBA Subject to Transfer Restriction | Sep. 30, 2010
Common Stock Owned by Union VEBA Subject to Transfer Restriction | |||||||||
| Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Monthly contributions per hour worked by each bargaining unit employee | $ 1.25 | $ 1.50 | $ 1 | $ 1.25 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Estimated annual contribution to pension and other postretirement benefit plans | 2,000,000 | 4,000,000 | 4,000,000 | 1,000,000 | 6,000,000 | 3,000,000 | ||||||||||||||||||||||||||||||||||||||||||||||||||
| Number of production facilities | 7 | 3 | 1 | 2 | 1 | |||||||||||||||||||||||||||||||||||||||||||||||||||
| Defined contribution plan annual employer contribution | 800 | 2,400 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Defined contribution plan employer contribution percentage | 2.00% | 2.00% | 10.00% | 10.00% | 2.00% | 2.00% | 4.00% | |||||||||||||||||||||||||||||||||||||||||||||||||
| Portion of plan assets invested in equity securities | 62.00% | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Asset mix target allocation in equity | 60.00% | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Portion of plan assets invested in debt securities | 36.00% | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Asset mix target allocation in debt | 36.00% | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Number of trustees | 4 | 2 | 2 | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| Administrative expense obligation | 300,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Administrative expense obligation percentage | 50.00% | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Postretirement medical plan contribution obligation percentage | 10.00% | 20.00% | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Cash flow in determining VEBA obligation | 20,000,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Postretirement medical plan contribution obligation | 2,100,000 | 20,000,000 | 1,800,000 | 300,000 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Postretirement medical plan contribution obligation paid | 100,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Liquidity requirement | 50,000,000 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Postretirement medical plan common stock ownership percentage | 11.00% | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Common stock, shares outstanding | 19,291,721 | 19,214,451 | 2,202,495 | |||||||||||||||||||||||||||||||||||||||||||||||||||||
| Stock transfer restriction annual period | 12 months | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Unrestricted Union VEBA shares allowed to be sold in any twelve-month period | 1,321,485 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Common stock sold by Union VEBA | 1,321,485 | 1,321,485 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Increase in Union VEBA assets | 65,500,000 | [1] | 52,000,000 | [1] | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| Reduction in Common stock owned by Union VEBA | (40,800,000) | (9,100,000) | (700,000) | (31,700,000) | [2] | (31,700,000) | [2] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Increase in Additional paid in capital | (40,800,000) | (9,100,000) | (700,000) | (31,700,000) | [2] | (31,700,000) | [2] | |||||||||||||||||||||||||||||||||||||||||||||||||
| Decrease in Deferred tax assets | $ (24,700,000) | $ (19,600,000) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Weighted average price per share sold by Union VEBA | $ 49.58 | $ 39.38 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Reorganization Value Per Share | $ 24.02 | $ 24.02 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
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