Note 1 - Basis of Presentation (Tables)

9 Months Ended

Sep. 30, 2019

Notes Tables

Schedule of Cash and Cash Equivalents [Table Text Block]

Nine Months Ended September 30,	2019			2018
Cash, cash equivalents and restricted cash, beginning of period	$	278,629		$	233,711
End of the period
Cash and cash equivalents		184,673			230,259
Restricted cash		5,658			5,599
Total cash, cash equivalents and restricted cash, end of period		190,331			235,858
Net (decrease) increase in cash, cash equivalents and restricted cash	$	(88,298	)	$	2,147