Note 8 - Accrued Liabilities and Other Current Liabilities - Summary of Accrued Liabilities and Other Current Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Employee compensation expense	$ 242	$ 4,221
Project asset costs	7,862	2,503
Accrued legal services	307	1,060
Other accrued liabilities	338	967
Total accrued liabilities and other current liabilities	$ 8,749	$ 8,751