Stockholders' Equity - Narrative (Details)	1 Months Ended
	Aug. 31, 2009 item shares	Mar. 31, 2021 shares	Mar. 31, 2020 shares
Common Stock Warrants
Preferred stock, authorized shares		2,000,000
Preferred stock, outstanding shares		0	0
Stockholder Rights Plan
Common Stock Warrants
Number of shares of Series A Junior Participating Preferred Stock that each right will enable the holder to buy	0.001
Number of preferred stock purchase rights distributed as dividend for each shares of common stock held	1
Number of series of junior participating preferred stock eliminated | item	2