Note 6 - Intellectual Property (Details Textual) - USD ($)
$ in Thousands
|12 Months Ended|
Dec. 31, 2020
Dec. 31, 2019
|Amortization of Intangible Assets, Total||$ 180||$ 182|
The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.
Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef