Note 7 - Accounts Payable, Accrued Expenses and Other Liabilities (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]

	December 31, 2018		December 31,  2017
Accounts payable, trade	$	12,394	$	19,330
Accrued compensation and other		42,833		24,072
Accrued operating expenses		19,675		18,498
Total accounts payable, accrued expenses and other liabilities	$	74,902	$	61,900