Consolidated Statements of Cash Flow (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2020	Mar. 31, 2019
Statement Of Cash Flows [Abstract]
Cash	$ 233	$ 237
Restricted cash included in other long-term assets		$ 412
Restricted Cash and Cash Equivalents, Noncurrent, Asset, Statement of Financial Position [Extensible List]	us-gaap:OtherAssetsNoncurrent	us-gaap:OtherAssetsNoncurrent
Total cash and restricted cash	$ 233	$ 649