Quarterly report pursuant to Section 13 or 15(d)

Income Taxes - Additional Information (Detail)

v3.19.1
Income Taxes - Additional Information (Detail) - USD ($)
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Income Tax Disclosure [Abstract]    
Liability for unrecognized tax benefit, including related estimates of penalties and interest $ 0 $ 0
Income tax provision (benefit) $ 15,000 $ 32,000
Projected annual effective tax rate 0.30% 0.60%
Statutory tax rate 21.00%