Annual report pursuant to Section 13 and 15(d)

Animal Health License Agreements (Narrative) (Details)

v3.21.1
Animal Health License Agreements (Narrative) (Details) - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended
Jul. 31, 2012
Dec. 31, 2020
Dec. 31, 2019
Animal Health License Agreements [Abstract]      
Deferred revenue   $ 97 $ 97
Deferred revenue, noncurrent   679 776
Recognition of license fee revenue $ 1,600 $ 100 $ 100