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Commitments and Contingencies - Future Minimum Payments Under All Leases and Loan Payable (Detail) - USD ($) | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | ---
Loss Contingencies [Line Items] |  |
Less current maturities, Capital Leases | $ 20,032 | $ 20,191
Silicon Valley Bank [Member] |  |
Loss Contingencies [Line Items] |  |
2016 | 1,440,679 |
2017 | 0 |
2018 | 0 |
2019 | 0 |
2020 | 0 |
Thereafter | 0 |
Total minimum loan payments | 1,440,679 |
Less amounts representing interest | 18,184 |
Principal amounts of loan payable | 1,422,495 |
Less current maturities, loan payable | 0 |
Loan payable, less current maturities | 0 |
Operating Leases [Member] |  |
Loss Contingencies [Line Items] |  |
Operating Leases, 2016 | 1,968,459 |
Operating Leases, 2017 | 2,014,706 |
Operating Leases, 2018 | 2,061,260 |
Operating Leases, 2019 | 2,108,130 |
Operating Leases, 2020 | 2,155,325 |
Operating Leases, Thereafter | 3,933,455 |
Total minimum lease payments, Operating Leases | 14,241,335 |
Capital Leases [Member] |  |
Loss Contingencies [Line Items] |  |
Capital Leases, 2016 | 20,670 |
Capital Leases, 2017 | 11,202 |
Capital Leases, 2018 | 4,913 |
Capital Leases, 2019 | 0 |
Capital Leases, 2020 | 0 |
Capital Leases, Thereafter | 0 |
Total minimum lease payments, Capital Leases | 36,785 |
Less amounts representing interest, Capital Leases | 875 |
Principal amounts of loan payable and capital lease obligations, Capital Leases | 35,910 |
Less current maturities, Capital Leases | 20,032 |
Capital Leases, Less current maturities | $ 15,878 |

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