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Summary Quarterly Financial Data | 12 Months Ended
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Dec. 31, 2011
Summary Quarterly Financial Data [Abstract] |
Schedule of Quarterly Financial Information [Table Text Block] | Summary Quarterly Financial Data
|  | As of December 31, 2011
|  | First Quarter |  | Second Quarter |  | Third Quarter |  | Fourth Quarter
|  | (unaudited, dollars in thousands, except for per share data)
Net sales |  | $ | 258,560 |  |  | $ | 288,090 |  |  | $ | 277,660 |  |  | $ | 259,650 |
Gross profit |  | 71,820 |  |  | 88,290 |  |  | 81,940 |  |  | 75,650 |
Income from continuing operations |  | 10,690 |  |  | 16,010 |  |  | 16,980 |  |  | 7,130 |
Income from discontinued operations, net of income taxes |  | 1,060 |  |  | 1,080 |  |  | 1,290 |  |  | 6,120 |
Net income |  | 11,750 |  |  | 17,090 |  |  | 18,270 |  |  | 13,250 |
Earnings per share—basic: |  |  |  |  |  |  |  |
Continuing operations |  | $ | 0.32 |  |  | $ | 0.47 |  |  | $ | 0.49 |  |  | $ | 0.21 |
Discontinued operations |  | 0.03 |  |  | 0.03 |  |  | 0.04 |  |  | 0.18 |
Net income per share |  | $ | 0.35 |  |  | $ | 0.50 |  |  | $ | 0.53 |  |  | $ | 0.39 |
Weighted average shares—basic |  | 33,913,610 |  |  | 34,215,734 |  |  | 34,417,879 |  |  | 34,437,097 |
Earnings per share—diluted: |  |  |  |  |  |  |  |
Continuing operations |  | $ | 0.31 |  |  | $ | 0.46 |  |  | $ | 0.49 |  |  | $ | 0.20 |
Discontinued operations |  | 0.03 |  |  | 0.03 |  |  | 0.03 |  |  | 0.18 |
Net income per share |  | $ | 0.34 |  |  | $ | 0.49 |  |  | $ | 0.52 |  |  | $ | 0.38 |
Weighted average shares—diluted |  | 34,599,076 |  |  | 34,769,576 |  |  | 34,901,277 |  |  | 34,961,772 |
|  | As of December 31, 2010
|  | First Quarter |  | Second Quarter |  | Third Quarter |  | Fourth Quarter
|  | (unaudited, dollars in thousands, except for per share data)
Net sales |  | $ | 210,430 |  |  | $ | 241,790 |  |  | $ | 237,730 |  |  | $ | 212,510 |
Gross profit |  | 61,110 |  |  | 75,620 |  |  | 72,070 |  |  | 62,250 |
Income from continuing operations |  | 5,180 |  |  | 14,170 |  |  | 11,950 |  |  | 7,630 |
Income (loss) from discontinued operations, net of income taxes |  | 250 |  |  | 7,260 |  |  | 770 |  |  | (1,940 | )
Net income |  | 5,430 |  |  | 21,430 |  |  | 12,720 |  |  | 5,690 |
Earnings (loss) per share—basic: |  |  |  |  |  |  |  |
Continuing operations |  | $ | 0.15 |  |  | $ | 0.42 |  |  | $ | 0.36 |  |  | $ | 0.23 |
Discontinued operations |  | 0.01 |  |  | 0.21 |  |  | 0.02 |  |  | (0.06 | )
Net income per share |  | $ | 0.16 |  |  | $ | 0.63 |  |  | $ | 0.38 |  |  | $ | 0.17 |
Weighted average shares—basic |  | 33,569,677 |  |  | 33,794,647 |  |  | 33,827,939 |  |  | 33,852,165 |
Earnings (loss) per share—diluted: |  |  |  |  |  |  |  |
Continuing operations |  | $ | 0.15 |  |  | $ | 0.41 |  |  | $ | 0.35 |  |  | $ | 0.22 |
Discontinued operations |  | 0.01 |  |  | 0.21 |  |  | 0.02 |  |  | (0.06 | )
Net income per share |  | $ | 0.16 |  |  | $ | 0.62 |  |  | $ | 0.37 |  |  | $ | 0.16 |
Weighted average shares—diluted |  | 34,314,020 |  |  | 34,437,418 |  |  | 34,512,820 |  |  | 34,561,391 |

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- Definition The entire disclosure for the quarterly financial data in the annual financial statements. The disclosure may include a tabular presentation of financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income or loss before extraordinary items and earnings per share data. It also includes an indication if the information in the note is unaudited, comments on the aggregate effect of year-end adjustments, and an explanation of matters or transactions that affect comparability or are pertinent to an understanding of the information furnished. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 6 -Section G -Subsection 1 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6372559&loc=d3e725-108305 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 28 -Paragraph 23, 24 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6372559&loc=d3e765-108305 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 28 -Paragraph 30 -Subparagraph a-j -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 302 -Paragraph a Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=6952194&loc=d3e1280-108306 + Details
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