Note 3 - Intangible and Other Assets  | 
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| Notes to Financial Statements | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Intangible Assets Disclosure [Text Block] | 
   
 
 Intangible and other assets consisted of the following for the periods presented: 
 
 
 Amortization expense for the three and six months ended June 30, 2022 totaled $1,300,000 and $2,601,000, respectively. Amortization expense for the three and six months ended June 30, 2021 totaled $302,000 and $795,000, respectively. Amortization expense included in cost of revenue for the three and six months ended June 30, 2022 totaled $27,000 and $31,000, respectively. Amortization expense included in cost of revenue for the three and six months ended June 30, 2021 totaled $13,000 and $16,000, respectively. 
 During the three months ended June 30, 2022, the Company purchased Anime Battlegrounds X, one of the highest rated games on Roblox, from a third-party game developer. Total purchase price of $500,000 was capitalized and amortized to cost of revenue over the estimated useful life of 5 years. 
 The Company expects to record amortization of intangible assets for the year ending December 31, 2022 and future fiscal years as follows: 
 
 
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