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Guarantees | 9 Months Ended
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Sep. 30, 2014
Guarantees [Abstract] |
Guarantees | Guarantees We provide warranties on certain of our products at the time of sale. The standard warranty period for our capital and reusable equipment is generally one year. Liability under service and warranty policies is based upon a review of historical warranty and service claim experience. Adjustments are made to accruals as claim data and historical experience warrant. Changes in the carrying amount of service and product warranties for the nine months ended September 30, are as follows:
| 2013 |  | 2014
Balance as of January 1, | $ | 3,636 |  |  | $ | 2,422 |
Provision for warranties | 2,310 |  |  | 2,622 |
Claims made | (2,927 | ) |  | (2,703 | )
Balance as of September 30, | $ | 3,019 |  |  | $ | 2,341 |

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- Definition The entire disclosure for standard and extended product warranties and other product guarantee contracts, including a tabular reconciliation of the changes in the guarantor's aggregate product warranty liability for the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249 + Details
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