Note 6 - Net Loss Per Share - Computation of Historical Basic and Diluted Net Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Net loss	$ (3.4)	$ (9.1)	$ (8.7)	$ (19.1)
Weighted-average shares outstanding (in shares)	38,649,237	38,640,487	38,649,237	38,640,487
Shares used to compute diluted earnings per share (in shares)	38,649,237	38,640,487	38,649,237	38,640,487
Basic net loss per share (in dollars per share)	$ (0.09)	$ (0.24)	$ (0.23)	$ (0.49)
Diluted net loss per share (in dollars per share)	$ (0.09)	$ (0.24)	$ (0.23)	$ (0.49)
Number of anti-dilutive share-based awards excluded from computation (in shares)	6,898,629	5,645,543	6,898,629	5,645,543