Stock-based Compensation Option Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Stock-based Compensation Option Activity Details
Balance at beginning of period	4,462	4,793
Granted	35	54
Exercised	(101)	(192)
Cancelled/forfeited	(48)	0
Balance at end of period	4,348	4,655
Weighted-average exercise price of options granted during period	$ 4.93	$ 5.45
Total intrinsic value of options exercised during the period	$ 792	$ 2,018
Weighted Average Remaining recognition period in years	1 year 331 days	2 years 79 days