Annual report pursuant to Section 13 and 15(d)

Related Party Transactions - Additional Information (Detail)

v3.19.1
Related Party Transactions - Additional Information (Detail) - USD ($)
1 Months Ended 12 Months Ended
Mar. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
Related Party Transaction [Line Items]      
Due to other related party transactions   $ 0 $ 0
Chad Steelberg and Ryan Steelberg [Member]      
Related Party Transaction [Line Items]      
Employment agreement term 3 years    
Estimated common stock calculated value $ 125,000    
Chad Steelberg and Ryan Steelberg [Member] | Healthcare Plans [Member]      
Related Party Transaction [Line Items]      
Related party transaction expenses   56,000 58,000
Due to related party   $ 5,000 $ 0
Chad Steelberg [Member]      
Related Party Transaction [Line Items]      
Employment agreement term 3 years    
Estimated common stock calculated value $ 125,000    
Share-based compensation arrangement by share-based payment award, shares issued in period     17,807