| Schedule of Goodwill [Table Text Block] |
The change in the carrying amount of goodwill for the six months ended June 30, 2018 is as follows: | Balance as of December 31, 2017 | | $ | 1,522,605 | | | Impairment goodwill | | | (1,522,605) | | | Balance as of June 30, 2018 | | $ | | |
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| Schedule of Finite-Lived Intangible Assets [Table Text Block] |
The change in the carrying amounts of intangible assets for the six months ended June 30, 2018 is as follows: | Balance as of December 31, 2017 | | $ | 472,250 | | | Amortization | | | 58,667 | | | Impairment intangibles | | | 413,583 | | | Balance as of June 30, 2018 | | $ | | |
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| Schedule of Finite-Lived Intangible Assets Acquired as Part of Business Combination [Table Text Block] |
Identified intangible assets consist of the following: | | | | | June 30, 2018 | | December 31, 2017 | | | Intangible assets | | Useful Life | | Gross
Assets | | Accumulated
Amortization | | Net | | Gross
Assets | | Accumulated
Amortization | | Net | | | Ticketing software | | 3 years | | $ | 90,000 | | $ | (52,500) | | $ | 37,500 | | $ | 90,000 | | $ | (37,500) | | $ | 52,500 | | | Trademark and brand | | 3 years | | | 50,000 | | | (25,000) | | | 25,000 | | | 50,000 | | | (16,667) | | | 33,333 | | | Fighter contracts | | 3 years | | | 140,000 | | | (21,000) | | | 119,000 | | | 140,000 | | | (14,000) | | | 126,000 | | | Promoter relationships | | 6 years | | | 277,099 | | | (57,516) | | | 219,583 | | | 277,099 | | | (31,682) | | | 245,417 | | | Sponsor relationships | | 4 years | | | 20,000 | | | (7,500) | | | 12,500 | | | 20,000 | | | (5,000) | | | 15,000 | | | Total intangible assets, gross | | | | $ | 577,099 | | $ | (163,516) | | $ | 413,583 | | $ | 577,099 | | $ | (104,849) | | $ | 472,250 | |
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