Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Jun. 30, 2020	Mar. 31, 2020
Statement of Financial Position [Abstract]
Pledged as collateral for credit	$ 85	$ 85
Accounts receivable, net of allowance	566	500
Notes receivable, net of allowance	$ 0	$ 25
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized	5,000	5,000
Preferred stock, shares issued
Preferred stock, shares outstanding
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	200,000	200,000
Common stock, shares issued	98,604	85,876
Common stock, shares outstanding	98,019	85,291