Note 1 - Basis of Presentation - Reconciliation of Basic to Diluted Weighted-average Shares Outstanding (Details) - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Weighted-average shares outstanding-basic (in shares)	100,000	88,000	100,000	88,000
Common stock equivalents for stock options and restricted shares (in shares)	1,000	0	0	1,000
Weighted-average shares outstanding-diluted (in shares)	101,000	88,000	100,000	89,000