Income Taxes - Components of Deferred Tax Assets/(Liabilities) (Detail) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Operating Loss Carryforwards [Line Items]
Reserve for sales allowances and possible losses	$ 686,000	$ 478,000
Accrued expenses	2,381,000	938,000
Prepaid royalties	6,224,000	2,659,000
Accrued royalties	2,314,000	5,973,000
Inventory	10,309,000	10,751,000
State income taxes	17,000	19,000
Property and equipment	1,952,000	2,635,000
Goodwill and intangibles	9,185,000	11,542,000
Share-based compensation	894,000	773,000
Share-based compensation	(1,970,000)	(2,121,000)
Interest limitation	3,539,000	2,210,000
Operating lease right-of-use assets	(7,422,000)
Operating lease liabilities	8,195,000
Federal and state net operating loss carryforwards	53,845,000	46,759,000
Credit carryforwards	909,000	1,121,000
Deferred Tax Liabilities, Other		(633,000)
Other	1,706,000
Gross	92,764,000	83,104,000
Valuation allowance	(92,778,000)	(84,097,000)
Total net deferred tax liabilities	(14,000)	(993,000)
Deferred income tax liabilities	226,000	1,431,000
Other Long Term Assets
Operating Loss Carryforwards [Line Items]
Deferred tax assets	$ 212,000	$ 438,000