Share-Based Plans - Stock Option Activity (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Mar. 31, 2019 USD ($) $ / shares shares
Number of Options
Outstanding, Number of Options, Beginning Balance (in shares) | shares	537,800
Granted, Number of Options (in shares) | shares	10,000
Canceled, Number of Options (in shares) | shares	(123,856)
Forfeited, Number of Options (in shares) | shares	(19,969)
Outstanding, Number of Options, Ending Balance (in shares) | shares	403,975
Exercisable, Number of Options (in shares) | shares	227,125
Expected to Vest, Number of Options (in shares) | shares	176,850
Weighted Average Exercise Price
Outstanding, Weighted Average Exercise Price Beginning Balance (in dollars per share) | $ / shares	$ 26.35
Granted, Weighted Average Exercise Price (in dollars per share) | $ / shares	13.39
Canceled, Weighted Average Exercise Price (in dollars per share) | $ / shares	25.34
Forfeited, Weighted Average Exercise Price (in dollars per share) | $ / shares	27.61
Outstanding, Weighted Average Exercise Price Ending Balance (in dollars per share) | $ / shares	26.27
Exercisable, Weighted Average Exercise Price (in dollars per share) | $ / shares	25.89
Expected to Vest, Weighted Average Exercise Price (in dollars per share) | $ / shares	$ 26.76
Outstanding, Weighted Average Remaining Contractual Life	4 years 6 months 7 days
Exercisable, Weighted Average Remaining Contractual Life	3 years 2 months 22 days
Expected to Vest, Weighted Average Remaining Contractual Life	6 years 2 months 5 days
Outstanding, Aggregate Intrinsic Value | $	$ 0
Exercisable, Aggregate Intrinsic Value | $	0
Expected to Vest, Aggregate Intrinsic Value | $	$ 0