XML 63 R53.htm IDEA: XBRL DOCUMENT v3.19.1
Subsequent Events - Additional Information (Details) - $ / shares
May 06, 2019
Nov. 04, 2019
Maximum [Member] | Scenario, Forecast [Member]    
Subsequent Event [Line Items]    
Nasdaq compliance minimum bid price requirement   $ 1
Subsequent Event [Member]    
Subsequent Event [Line Items]    
Nasdaq compliance, minimum bid price requirement, number of consecutive business days 30 days  
Nasdaq compliance, extension period granted to regain compliance 180 days  
Nasdaq compliance, minimum bid price requirement, number of consecutive business days regain compliance 10 days  
Subsequent Event [Member] | Maximum [Member]    
Subsequent Event [Line Items]    
Nasdaq compliance minimum bid price requirement $ 1.00