Revenue - Additional Information (Detail)	3 Months Ended		6 Months Ended
	Jun. 30, 2020 USD ($) Customer	Jun. 30, 2019 USD ($) Customer	Jun. 30, 2020 USD ($) Customer	Jun. 30, 2019 USD ($) Customer	Dec. 31, 2019 USD ($)
Revenue Recognition [Line Items]
Number of customer | Customer	3	3	3	3
Percentage of revenue	52.30%	54.10%	53.20%	57.00%
Deferred contract costs	$ 105,000		$ 105,000		$ 113,750
Deferred revenue	16,834		16,834		$ 19,644
Selling, General and Administrative Expense [Member]
Revenue Recognition [Line Items]
Amortized deferred contract costs	$ 52,500	$ 53,750	$ 108,750	$ 107,500