Credit Facility - Additional Information (Detail) - USD ($)		12 Months Ended
	Jan. 23, 2020	Dec. 31, 2019
Line of Credit Facility [Line Items]
Revolving credit facility, maximum borrowing capacity		$ 2,500,000
Credit facility limit restricted to support letter of credit		226,731
Line of credit facility, remaining borrowing capacity		$ 2,300,000
Prime Rate
Line of Credit Facility [Line Items]
Interest rate over prime rate		0.50%
Subsequent Event [Member]
Line of Credit Facility [Line Items]
Revolving credit facility, maximum borrowing capacity	$ 250,000
Credit facility expiration date	Apr. 30, 2020