Consolidated Statements of Cash Flow (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2020	Jun. 30, 2019
Statement Of Cash Flows [Abstract]
Cash	$ 263	$ 228
Restricted cash included in other long-term assets		$ 430
Restricted Cash and Cash Equivalents, Noncurrent, Asset, Statement of Financial Position [Extensible List]	us-gaap:OtherAssetsNoncurrent	us-gaap:OtherAssetsNoncurrent
Total cash and restricted cash	$ 263	$ 658