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Basis of Presentation and Significant Accounting Policies (Details) (USD $) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2014 | Mar. 31, 2013 | Dec. 31, 2013
Inventories Detail [Table] |  |  |
Finished goods | $ 70,574,000 |  | $ 73,515,000
Raw materials | 3,974,000 |  | 3,894,000
Parts and supplies | 22,855,000 |  | 22,668,000
Work in progress | 922,000 |  | 715,000
Inventories | 98,325,000 |  | 100,792,000
Weighted Average Shares Outstanding [Table] |  |  |
Number of weighted average common shares outstanding | 78,306,000 | 77,671,000 |
Assumed exercise of stock options | 0 | 724,000 |
Average diluted shares outstanding | 78,306,000 | 78,395,000 |
Outstanding stock options excluded from average diluted shares outstanding |  | 2,434,093 |
Proceeds from insurance settlements |  | 7,600,000 |
Fair value of Senior Notes | 313,300,000 |  | 318,400,000
Carrying value of Senior Notes | 305,000,000 |  | 305,000,000
Prior period reclassification adjustment |  | 300,000 |
Fair value of contingent purchase price liability | 2,400,000 |  |
Fair Value, Measurements, Recurring [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Asset for foreign currency derivative contracts | 195,000 |  |
Liability for foreign currency derivative contracts | (88,000) |  |
Total | 107,000 |  |
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Asset for foreign currency derivative contracts | 0 |  |
Liability for foreign currency derivative contracts | 0 |  |
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Asset for foreign currency derivative contracts | 195,000 |  |
Liability for foreign currency derivative contracts | (88,000) |  |
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Asset for foreign currency derivative contracts | 0 |  |
Liability for foreign currency derivative contracts | $ 0 |  |

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- Definition The cash inflow from the amounts received by the insured under the terms of an insurance contract settlement. This element pertains only to insurance proceeds related to operating activities. It excludes insurance settlements classified as investing cash flows, for example, insurance settlements related to fixed assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 16 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3337-108585 + Details
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