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Acquisitions Acquisitions (Tables) | 12 Months Ended
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Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Business Acquisition [Line Items] |  |  |
Business Acquisition, Pro Forma Information [Table Text Block] |  | The following table summarizes our consolidated results of operations for the years ended December 31, 2010 and 2009, as well as the pro forma consolidated results of operations as though the BioSphere acquisition had occurred on January 1, 2009 (in thousands, except per share amounts):
| Year Ended December 31, 2010 |  | Year Ended December 31, 2009
| As Reported |  | Pro Forma |  | As Reported |  | Pro Forma
Sales | $ | 296,755 |  |  | $ | 317,382 |  |  | $ | 257,462 |  |  | $ | 288,589 |
Net income | 12,460 |  |  | 7,258 |  |  | 22,530 |  |  | 17,000 |
Earnings per common share: |  |  |  |  |  |  |  |  |  |  |
Basic | $ | 0.35 |  |  | $ | 0.21 |  |  | $ | 0.64 |  |  | $ | 0.49 |
Diluted | $ | 0.35 |  |  | $ | 0.20 |  |  | $ | 0.63 |  |  | $ | 0.48 |
| The following table summarizes our consolidated results of operations for the year ended December 31, 2009, as well as the pro forma consolidated results of operations as though the Hatch, Alveolus and Biosearch transactions had occurred on January 1, 2009 (in thousands, except per share amounts):
| Year Ended December 31, 2009
| As Reported |  | Pro Forma
Sales | $ | 257,462 |  |  | $ | 259,914 |
Net income | 22,530 |  |  | 22,470 |
Earnings per common share: |  |  |  |  |
Basic | $ | 0.64 |  |  | $ | 0.64 |
Diluted | $ | 0.63 |  |  | $ | 0.63 |
ScheduleOfBusinessAcquisitionsByAcquisitionBiosearch [Table Text Block] |  |  | The purchase price was allocated as follows (in thousands):
Assets Acquired |  |
Inventories | $ | 188 |
Property and equipment | 31 |
Intangibles |  |
Developed technology | 380 |
Customer lists | 660 |
Non-compete | 25 |
Goodwill | 316 |
Total assets acquired | 1,600 |
Liabilities Assumed | — |
Net assets acquired | $ | 1,600 |
ScheduleOfBusinessAcquisitionsByAcquisitionAlveolus [Table Text Block] |  |  | The purchase price was allocated as follows (in thousands):
Assets Acquired |  |
Inventories | $ | 1,741 |
Trade receivables | 974 |
Other assets | 241 |
Property and equipment | 547 |
Intangibles |  |
Developed technology | 5,700 |
Trademarks | 1,400 |
Customer lists | 1,100 |
In-process research and development | 400 |
Goodwill | 8,028 |
Total assets acquired | 20,131 |
Liabilities Assumed |  |
Accounts payable | 467 |
Other liabilities | 572 |
Total liabilities assumed | 1,039 |
Net assets acquired | $ | 19,092 |
ScheduleOfBusinessAcquisitionsByAcquisitionHatch [Table Text Block] |  |  | The purchase price was allocated as follows (in thousands):
Assets Acquired |  |
Intangibles |  |
Developed technology | $ | 8,100 |
Customer list | 590 |
Non-compete | 240 |
Trademark | 650 |
Goodwill | 11,420 |
Total assets acquired | 21,000 |
Liabilities Assumed | — |
Net assets acquired | $ | 21,000 |
ScheduleOfBusinessAcquisitionsByAcquisitionBiosphere [Table Text Block] |  | As of December 31, 2010, the BioSphere purchase price was allocated as follows (in thousands):
Assets Acquired |  |
Marketable securities | $ | 9,673 |
Trade receivables | 4,529 |
Inventories | 5,694 |
Other assets | 1,340 |
Property and equipment | 546 |
Deferred income tax assets | 16,012 |
Intangibles |  |
Developed technology | 19,000 |
Customer list | 7,900 |
License agreement | 380 |
Trademark | 3,200 |
Goodwill | 34,016 |
Total assets acquired | 102,290 |
Liabilities Assumed |  |
Accounts payable | 322 |
Accrued expenses | 3,617 |
Deferred income tax liabilities | 729 |
Liabilities related to unrecognized tax benefits | 961 |
Other liabilities | 936 |
Total liabilities assumed | 6,565 |
Net assets acquired, net of cash acquired of $274 | $ | 95,725 |
Schedule of Business Acquisitions, by Acquisition [Table Text Block] | The purchase price was preliminarily allocated as follows (in thousands):
Assets Acquired |
Property and equipment | $ | 73 |
Intangibles |
Developed technology | 3,200 |
Customer lists | 300 |
Goodwill | 2,697 |
Total assets acquired | 6,270 |
Liabilities Assumed |
Contingent liabilities | 1,270 |
Net assets acquired | $ | 5,000 |

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- Definition Tabular disclosure of pro forma results of operations for a material business acquisition or series of individually immaterial business acquisitions that are material in the aggregate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(2)-(3) -URI http://asc.fasb.org/extlink&oid=6909870&loc=d3e1392-128463 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 54 -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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 55 -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 Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 68 -Subparagraph r(2, 3) -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. + Details
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- Definition Tabular disclosure of a material business combination completed during the period, including background, timing, and recognized assets and liabilities. This table does not include leveraged buyouts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Appendix F -Paragraph F4 -Subparagraph e Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6909870&loc=d3e1392-128463 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph a -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 805 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6909870&loc=d3e1486-128463 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 52 -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 FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 68 -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. + Details
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