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Inventories (Tables) | 12 Months Ended
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Dec. 31, 2018
Inventory Disclosure [Abstract] |
Schedule of Inventories | Inventories are valued at the lower of cost or estimated net realizable value, after provision for excess, obsolete or impaired items, which is reviewed and updated on a periodic basis by management. For inventory procured or produced, whether internally or through contract manufacturing arrangements, at our manufacturing facility in Italy, cost is determined on a weighted-average basis, which approximates the first-in, first-out (“FIFO”) method. For inventory procured or produced, whether internally or through contract manufacturing arrangements, at our manufacturing facility in Texas, standard costs, which approximates actual cost on the FIFO method, is used to value inventory. Standard costs are reviewed annually by management, or more often in the event circumstances indicate a change in cost has occurred. Work-in-process, finished products, field inventory and consignment inventory include material, labor and production overhead costs. Field inventory represents immediately saleable finished products inventory that is in the possession of the Company’s independent sales representatives or located at third party customers, such as distributors and hospitals. Prior to the adoption of ASU 2014-09, or for all periods presented prior to January 1, 2018, deferred cost of sales resulted from certain transactions where the Company had shipped product or performed services for which all revenue recognition criteria had not yet been met. Once all revenue recognition criteria had been met, the revenue and associated cost of sales were recognized. Subsequent to the adoption of ASU 2014-09, the Company no longer has transactions which result in the recognition of deferred cost of sales. See Notes 2 and 15 for further discussion of the Company’s adoption of ASU 2014-09.
|  | December 31, |
(U.S. Dollars, in thousands) |  | 2018 |  |  | 2017 |
Raw materials |  | $ | 8,463 |  |  | $ | 6,067 |
Work-in-process |  |  | 13,478 |  |  |  | 12,487 |
Finished products |  |  | 18,244 |  |  |  | 11,244 |
Field / consignment inventory |  |  | 36,662 |  |  |  | 49,197 |
Deferred cost of sales |  |  | — |  |  |  | 2,335 |
Inventories |  | $ | 76,847 |  |  | $ | 81,330 |

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