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Guarantees | 3 Months Ended
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Mar. 31, 2019
Guarantees [Abstract] |
Guarantees | Guarantees We provide warranties on certain of our products at the time of sale and sell extended warranties. The standard warranty period for our capital equipment is generally 1 year and our extended warranties typically vary from one to three years. 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 standard warranties for the three months ended March 31, are as follows:
| 2019 |  | 2018
Balance as of January 1, | $ | 1,585 |  |  | $ | 1,750 |
Provision for warranties | 486 |  |  | 323 |
Claims made | (343 | ) |  | (290 | )
Balance as of March 31, | $ | 1,728 |  |  | $ | 1,783 |
Costs associated with extended warranty repairs are recorded as incurred and amounted to $1.4 million and $1.3 million for the three months ended March 31, 2019 and 2018, respectively.

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -URI http://asc.fasb.org/topic&trid=2155896 + Details
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