XML 32 R81.htm IDEA: XBRL DOCUMENT v3.20.1
Income Taxes - Additional Information (Detail) - USD ($)
3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2018
Jun. 30, 2018
Jun. 30, 2018
Sep. 30, 2018
Dec. 31, 2019
Dec. 31, 2018
Income Tax Examination [Line Items]            
Income tax expense (benefit) from continuing operations $ (528,000) $ (495,000) $ (495,000) $ (1,023,000) $ 2,000 $ (1,062,000)
Effective tax rate         (0.29%) (21.54%)
Net operating losses         $ 145,000,000  
Year of expiration of net operating loss carryforward expiration year         2027  
Specified time period for ownership change         3 years  
Accruals related to uncertainties tax positions         $ 0 $ 0
Tax year remain subject to examination         2016 2017 2018  
Minimum [Member]            
Income Tax Examination [Line Items]            
Percentage of ownership change         50.00%  
Percentage of change in ownership of shareholders         1.00%  
Maximum [Member]            
Income Tax Examination [Line Items]            
Percentage of change in ownership of shareholders         5.00%