Inventories And Deferred Preservation Costs

6 Months Ended

Jun. 30, 2019

Inventories And Deferred Preservation Costs [Abstract]

Inventories And Deferred Preservation Costs

4. Inventories and Deferred Preservation Costs 

Inventories at June 30, 2019 and December 31, 2018 were comprised of the following (in thousands): 

	June 30,		December 31,
	2019		2018
Raw materials and supplies	$	18,496	$	17,381
Work-in-process		4,382		3,858
Finished goods		22,544		24,239
Total inventories	$	45,422	$	45,478

Deferred preservation costs at June 30, 2019 and December 31, 2018 were comprised of the following (in thousands):

	June 30,		December 31,
	2019		2018
Cardiac tissues	$	16,171	$	15,972
Vascular tissues		16,245		17,202
Total deferred preservation costs	$	32,416	$	33,174

We maintain consignment inventory of our On-X Life Technologies Holdings, Inc. (“On-X”) heart valves at domestic hospital locations and On-X heart valves and JOTEC products at international hospital locations to facilitate usage. 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 June 30, 2019 we had $13.0 million in consignment inventory, with approximately 50% in domestic locations and 50% in foreign locations. As of December 31, 2018 we had $11.2 million in consignment inventory, with approximately 55% in domestic locations and 45% in foreign locations.