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, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Net loss	$ (9.1)	$ (6.5)	$ (19.1)	$ (13.2)
Weighted-average shares outstanding (in shares)	38,640,487	38,636,946	38,640,487	38,630,587
Shares used to compute diluted earnings per share (in shares)	38,640,487	38,636,946	38,640,487	38,630,587
Basic net loss per share (in dollars per share)	$ (0.24)	$ (0.17)	$ (0.49)	$ (0.34)
Diluted net loss per share (in dollars per share)	$ (0.24)	$ (0.17)	$ (0.49)	$ (0.34)
Number of anti-dilutive share-based awards excluded from computation (in shares)	5,645,543	4,631,556	5,645,543	4,619,210
Basic net income (loss) per share (in dollars per share)	$ (0.24)	$ (0.17)	$ (0.49)	$ (0.34)
Diluted net loss per share (in dollars per share)	$ (0.24)	$ (0.17)	$ (0.49)	$ (0.34)