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Condensed Consolidated Statements Of Operations And Comprehensive Loss - USD ($)
shares in Thousands, $ in Thousands
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Revenues:    
Total revenues $ 77,213 $ 71,087
Cost of products and preservation services:    
Total cost of products and preservation services 26,494 23,249
Gross margin 50,719 47,838
Operating expenses:    
General, administrative, and marketing 38,955 38,638
Research and development 10,128 7,754
Total operating expenses 49,083 46,392
Operating income 1,636 1,446
Interest expense 3,948 4,040
Interest income (16) (24)
Other expense, net 133 1,931
Loss before income taxes (2,429) (4,501)
Income tax expense (benefit) 960 (1,363)
Net loss $ (3,389) $ (3,138)
Loss per share:    
Basic $ (0.08) $ (0.08)
Diluted $ (0.08) $ (0.08)
Weighted-average common shares outstanding:    
Basic 39,850 38,738
Diluted 39,850 38,738
Net loss $ (3,389) $ (3,138)
Other Comprehensive loss:    
Foreign currency translation adjustments (3,775) (10,290)
Comprehensive loss (7,164) (13,428)
Products [Member]    
Revenues:    
Total revenues 57,542 53,345
Cost of products and preservation services:    
Total cost of products and preservation services 17,408 14,911
Preservation Services [Member]    
Revenues:    
Total revenues 19,671 17,742
Cost of products and preservation services:    
Total cost of products and preservation services $ 9,086 $ 8,338