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Inventories And Deferred Preservation Costs | 3 Months Ended
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Mar. 31, 2021
Inventories And Deferred Preservation Costs [Abstract] |
Inventories And Deferred Preservation Costs | 6. Inventories and Deferred Preservation Costs Inventories at March 31, 2021 and December 31, 2020 were comprised of the following (in thousands):
| March 31, |  | December 31,
| 2021 |  | 2020
Raw materials and supplies | $ | 34,789 |  | $ | 33,625
Work-in-process |  | 7,730 |  |  | 6,318
Finished goods |  | 30,856 |  |  | 33,095
Total inventories | $ | 73,375 |  | $ | 73,038
Total deferred preservation costs were $39.3 million and $36.5 million as of March 31, 2021 and December 31, 2020, respectively. To facilitate product usage, we maintain consignment inventory of our On-X heart valves at domestic hospital locations and On-X heart valves, JOTEC and AMDS products at international hospital locations. We retain title and control over this consignment inventory until the device is implanted, at which time we invoice the hospital and recognize revenue. As of March 31, 2021 we had $13.4 million in consignment inventory, with approximately 43% in domestic locations and 57% in international locations. As of December 31, 2020 we had $11.9 million in consignment inventory, with approximately 47% in domestic locations and 53% in international locations.

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- Definition The entire disclosure for inventory. Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -URI http://asc.fasb.org/topic&trid=2126998 + Details
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