Note 8 - Accrued Liabilities and Other Current Liabilities - Summary of Accrued Liabilities and Other Current Liabilities (Details) - USD ($) $ in Thousands		Dec. 31, 2019	Dec. 31, 2018
Employee compensation expense		$ 4,221	$ 3,130
Terminal and Pipeline asset costs		2,503	2,014
Valve installation incentive(1)	[1]		2,000
Accrued legal services		1,060	313
Other accrued liabilities		967	896
Total accrued liabilities and other current liabilities		$ 8,751	$ 8,353

[1] In April 2018, we entered into an agreement with an intrastate pipeline company with assets near the Terminal which incentivizes the pipeline company to procure, permit and install a valve on an intrastate pipeline near the Terminal. We agreed that, upon the later of (i) March 31, 2019 and (ii) thirty days after the date on which the valve was installed, we would reimburse the pipeline company a cash amount equal to 50% of the costs incurred in connection with the valve, up to a maximum payment of $2.0 million.. Such valve was installed in 2018 and we reimbursed the pipeline company $2.0 million in the first quarter of 2019.