XML 60 R45.htm IDEA: XBRL DOCUMENT v3.19.3
Income Taxes - Additional Information (Detail)
 9 Months Ended
Sep. 30, 2019
USD ($)
Income Taxes [Line Items]  
Net deferred tax asset $ 0
Income tax expense 0
Valuation allowance, net operating loss $ 8,200,000
Estimated Annual Effective Tax Rate 37.541%
Effective tax rate 0.00%
Federal [Member]  
Income Taxes [Line Items]  
Net operating loss carryforwards subject to expiration $ 172,700,000
Net operating loss carryforwards expiration year 2025
Net operating loss carryforwards expiration year 2037
Net operating loss carryforwards $ 5,300,000
Foreign [Member]  
Income Taxes [Line Items]  
Net operating loss carryforwards subject to expiration 46,400,000
Net operating loss carryforwards $ 2,800,000