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Legal Proceedings - Additional Information (Detail) - USD ($) | Oct. 07, 2016 | Jul. 27, 2016 | Feb. 24, 2016 | Jan. 20, 2016 | Dec. 03, 2015
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Revenue Sharing Agreement [Member] | Nybergs Member |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Percentage of ownership interest |  | 50.00% |  |  |
Case No.15-007461-CI [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Directors and officers insurance policy claim deductible |  |  |  |  | $ 15,000
Case No.11915-VCG [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Attorneys' fee associated with mooting litigation |  |  |  | $ 200,000 |
Directors and officers insurance policy claim deductible |  |  |  | $ 500,000 |
Case No.11915-VCG [Member] | Subsequent Event [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Payment made for settlement | $ 50,000 |  |  |  |
Case No. 8:16CV408t30 [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Directors and officers insurance policy claim deductible |  |  | $ 75,000 |  |
Payment made for settlement |  | $ 3,400,000 |  |  |
Case No. 8:16CV408t30 [Member] | Revenue Sharing Agreement [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Percentage of reduction in payment obligations due to terminated rights in RSAs |  | 50.00% |  |  |

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