Loss per Share (Details) - $ / shares shares in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Denominator [Abstract]
Weighted average shares outstanding (in shares)	23,131	22,760	23,113	22,740
Earnings Per Share, Basic and Diluted [Abstract]
Loss per share (in dollars per share)	$ (0.16)	$ (0.14)	$ (0.24)	$ (0.27)
Earnings Per Share, Diluted [Abstract]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	1,481,000	1,788,000	1,419,000	1,728,000