XML 75 R38.htm IDEA: XBRL DOCUMENT v3.19.3
Inventories And Deferred Preservation Costs (Schedule Of Inventories) (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Inventories And Deferred Preservation Costs [Abstract]    
Raw materials and supplies $ 19,584 $ 17,381
Work-in-process 5,183 3,858
Finished goods 23,636 24,239
Total inventories $ 48,403 $ 45,478