Business and Basis of Presentation (Detail) - USD ($)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020
Organization And Basis Of Presentation [Line Items]
Accounts receivable, net	$ 702,459		$ 702,459		$ 310,818
Net proceeds from issuance of stock and warrants			1,950,881	$ 19,673,605
Accumulated deficit	202,887,996		202,887,996		199,163,257
Cash and cash equivalents	1,772,005		1,772,005		22,572,104
Prepaid expenses and other current assets	(845,649)		(845,649)		(598,384)
Assets, Current	(23,432,006)		(23,432,006)		(24,187,859)
Accrued Sales Return provisions	10,000		10,000		39,000
Liabilities, Current	(1,832,429)		(1,832,429)		(1,365,697)
Operating Lease, Liability, Noncurrent	(233,693)		(233,693)		(306,709)
Stockholders' Equity Attributable to Parent	21,966,268	$ 24,228,011	21,966,268	24,228,011	23,215,786	$ 23,410,571	$ 24,237,908	$ 8,835,129	$ 5,261,052	$ 5,247,775
Cost of revenues	693,571	619,833	1,888,566	1,754,343
Gross Profit	1,274,432	1,444,526	4,520,129	4,678,987
Compensation cost not yet recognized	1,224,278		1,224,278
Operating Lease, Right-of-Use Asset	(398,144)		(398,144)		(475,230)
Assets	(24,032,390)		(24,032,390)		(24,888,192)
Accrued Liabilities, Current	(1,134,659)		(1,134,659)		(814,155)
Liabilities	(2,066,122)		(2,066,122)		(1,672,406)
Allowance for doubtful accounts	25,000		25,000		$ 25,000
Other Comprehensive Income (Loss), Net of Tax	0	$ 0	0	0
IdleFacilityImpairmentCharge			0	$ 126,748
Cash, Cash Equivalents, and Short-term Investments	20,800,000		20,800,000
Debt Securities, Held-to-maturity, Fair Value	$ 18,937,643		$ 18,937,643
One Customer | Revenue | Customer Concentration Risk
Organization And Basis Of Presentation [Line Items]
Concentration risk, percentage		25.00%	34.00%	29.00%
One Customer | Accounts Receivable | Customer Concentration Risk
Organization And Basis Of Presentation [Line Items]
Concentration risk, percentage			26.00%
Two Customers | Revenue | Customer Concentration Risk
Organization And Basis Of Presentation [Line Items]
Concentration risk, percentage	32.00%
Two Customers | Accounts Receivable | Customer Concentration Risk
Organization And Basis Of Presentation [Line Items]
Concentration risk, percentage					35.00%