XML 61 R50.htm IDEA: XBRL DOCUMENT v3.20.2
NOL Rights Agreement - Additional Information (Detail)
Jul. 06, 2020
Subsequent Events [Abstract]  
Ownership change description A company generally experiences an ownership change if the percentage of the value of its stock owned by certain 5% shareholders, as defined in Section 382 of the Code, increases by more than 50% points over a rolling three-year period.
Beneficial ownership percentage 4.90%