Quantum Corporation Annual report pursuant to Section 13 and 15(d)

STOCK INCENTIVE PLANS AND SHARE-BASED COMPENSATION - Schedule of Share-based Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2015
Share-based compensation expense:
Total share-based compensation expense	$ 6,698	$ 8,916	$ 11,583
Cost of revenue
Share-based compensation expense:
Total share-based compensation expense	895	1,241	1,489
Research and development
Share-based compensation expense:
Total share-based compensation expense	1,300	1,864	2,559
Sales and marketing
Share-based compensation expense:
Total share-based compensation expense	2,255	2,907	3,506
General and administrative
Share-based compensation expense:
Total share-based compensation expense	$ 2,248	$ 2,904	$ 4,029