Subsequent Events - Additional Information (Detail) | May 17, 2017USD ($) | May 16, 2017USD ($)$ / sharesshares | May 15, 2017USD ($)$ / sharesshares | May 12, 2017USD ($)$ / sharesshares | Apr. 21, 2017USD ($) | Apr. 18, 2017USD ($) | Apr. 17, 2017USD ($)$ / sharesshares | Apr. 13, 2017USD ($)Analyzer$ / sharesshares | Apr. 10, 2017shares | Apr. 07, 2017USD ($)$ / sharesshares | Mar. 14, 2014USD ($) | Oct. 31, 2013USD ($) | Mar. 31, 2017USD ($)$ / sharesshares | Sep. 30, 2017USD ($) | Apr. 30, 2018USD ($) | Jul. 15, 2017$ / shares | Dec. 31, 2016$ / shares |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | | | |
Preferred stock, par value | $ / shares | | | | | | | | | | | | | $ 0.001 | | | | $ 0.001 |
Master Lease Agreement And Schedule 001 | | | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | | | |
Proceeds from sale leaseback | | | | | | | | | | | | $ 2,500,000 | | | | | |
Sale-leaseback transaction monthly payments | | | | | | | | | | | | $ 74,875 | | | | | |
Lease Schedule 002 | | | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | | | |
Proceeds from sale leaseback | | | | | | | | | | | $ 1,500,000 | | | | | | |
Sale-leaseback transaction monthly payments | | | | | | | | | | | $ 64,665 | | | | | | |
Promissory Note Agreement | Scenario, Forecast | Utah Autism Foundation | | | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | | | |
Monthly payment of promissory note | | | | | | | | | | | | | | $ 139,540 | $ 74,875 | | |
2016 Notes | | | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | | | |
Principal amount of notes converted | | | | | | | | | | | | | $ 4,597,119 | | | | |
Debt instrument, number shares to be issued upon conversion | shares | | | | | | | | | | | | | 762,672 | | | | |
Face value of promissory note agreement | | | | | | | | | | | | | $ 32,249,032 | | | | |
New 2017 Series B Senior Secured Convertible Notes | Scenario, Forecast | | | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | | | |
Convertible debt, conversion price | $ / shares | | | | | | | | | | | | | | | | $ 3 | |
Subsequent Event | | | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | | | |
Number of sets of analyzers repurchased | Analyzer | | | | | | | | 2 | | | | | | | | | |
Aggregate purchase price of analyzers in cash | | | | | | | | $ 1,000,000 | | | | | | | | | |
Payment of repurchase of analyzers in current invoices | | | | | | | | 200,000 | | | | | | | | | |
Subsequent Event | Promissory Note Agreement | Utah Autism Foundation | | | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | | | |
Face value of promissory note agreement | | | | | | | | $ 1,200,000 | | | | | | | | | |
Debt Instrument, frequency of periodic payment | | | | | | | | The promissory note provides for 24 monthly payments of $45,000 per month with interest of 10% per annum with a balloon payment of $300,402 at the end of the 24-month period in April 2019. | | | | | | | | | |
Monthly payment of promissory note | | | | | | | | $ 45,000 | | | | | | | | | |
Notes payable, interest rate | | | | | | | | 10.00% | | | | | | | | | |
Balloon payment at maturity | | | | | | | | $ 300,402 | | | | | | | | | |
Number of monthly payment of promissory note | | | | | | | | 24 months | | | | | | | | | |
Promissory notes maturity date | | | | | | | | 2019-04 | | | | | | | | | |
Loan settlement terms | | | | | | | | The Company granted a security interest in the analyzers to the Foundation until the loan is fully paid. The loan from the Foundation replaces $1.2 million in obligations to Onset that would have been payable in monthly payments of $139,540 through September 2017 and $74,875 from October 2017 through April 2018. | | | | | | | | | |
Subsequent Event | 2016 Notes | | | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | | | |
Principal amount of notes converted | | | | | | | $ 15,346,613 | | | $ 800,000 | | | | | | | |
Convertible debt, conversion price | $ / shares | | | | | | | | | | $ 2 | | | | | | | |
Restricted cash returned to note holders | $ 14,500,000 | | | | | | | | | | | | | | | | |
Subsequent Event | 2017 Exchange Agreement | | | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | | | |
Principal amount of notes converted | | | | | | | | | | $ 16,200,000 | | | | | | | |
Subsequent Event | New 2017 Series A Senior Secured Convertible Notes | | | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | | | |
Convertible debt, conversion price | $ / shares | | | | | | | $ 3 | | | | | | | | | | |
Maturity date of notes | | | | | | | Apr. 17, 2020 | | | | | | | | | | |
Debt instrument, terms of conversion | | | | | | | Fixed conversion price of $3.00 and are not convertible until October 17 2017, the six month anniversary of the exchange date. | | | | | | | | | | |
Subsequent Event | Series B Notes | | | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | | | |
Principal amount of notes converted | | | | | | | $ 6,200,000 | | | | | | | | | | |
Aggregate principal amount cancelled | | | | | | | 10,000,000 | | | | | | | | | | |
Restricted cash return to holder | | | | | | | 10,000,000 | | | | | | | | | | |
Subsequent Event | New 2017 Series B Senior Secured Convertible Notes | | | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | | | |
Principal amount of notes converted | | $ 44,000 | $ 44,000 | | | | $ 334,860 | | | | | | | | | | |
Convertible debt, conversion price | $ / shares | | $ 1.10 | $ 1.10 | $ 1.10 | | | $ 3 | | | | | | | | | | |
Debt instrument, number shares to be issued upon conversion | shares | | 40,000 | 40,000 | | | | | | | | | | | | | | |
Floor price | $ / shares | | | | | | | $ 1 | | | | | | | | | | |
Maturity date of notes | | | | | | | Apr. 17, 2020 | | | | | | | | | | |
Debt instrument, terms of conversion | | | | | | | Fixed conversion price of $3.00 and are not convertible at the option of the holder thereof until October 17, 2017, the six month anniversary of the exchange date. | | | | | | | | | | |
Aggregate principal amount outstanding | | | | | $ 1,400,000 | | $ 6,200,000 | | | | | | | | | | |
Weighted average price of common stock | | | | | | | 85.00% | | | | | | | | | | |
Restricted cash used for general working capital and operating expenses | | | | | | | 100.00% | | | | | | | | | | |
Conversion of stock, shares issued | shares | | | | | | | 246,600 | | | | | | | | | | |
Restricted cash returned to note holders | | | | $ 1,400,000 | $ 1,500,000 | $ 3,000,000 | | | | | | | | | | | |
Subsequent Event | New 2017 Series B Senior Secured Convertible Notes | Minimum | | | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | | | |
Convertible debt, conversion price | $ / shares | | | | | | | $ 1.08 | | | | | | | | | | |
Subsequent Event | New 2017 Series B Senior Secured Convertible Notes | Maximum | | | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | | | |
Convertible debt, conversion price | $ / shares | | | | | | | $ 1.44 | | | | | | | | | | |
Subsequent Event | Common Stock | | | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | | | |
Convertible debt, conversion price | $ / shares | | | | | | | | | | $ 1.06 | | | | | | | |
Reverse stock split ratio, description | | | | | | | | | each two thousand shares of common stock were replaced with one share of common stock | | | | | | | | |
Conversion of preferred stock/convertible note into common stock (in shares) | shares | | | | | | | | | | 482,825 | | | | | | | |
Reverse stock split ratio | | | | | | | | | 0.0005 | | | | | | | | |
Conversion of stock, shares converted | shares | | | | | | | | | 1 | | | | | | | | |
Conversion of stock, shares issued | shares | | | | 101,647 | | | | | | | | | | | | | |
Subsequent Event | Common Stock | 2016 Notes | | | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | | | |
Debt instrument, number shares to be issued upon conversion | shares | | | | | | | | | | 343,900 | | | | | | | |
Common stock issued, conversion rate | $ / shares | | | | | | | | | | $ 2 | | | | | | | |
Subsequent Event | Preferred Stock | | | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | | | |
Reverse stock split ratio, description | | | | | | | | Each holder of Existing Preferred Stock (collectively, the “Preferred Holders”) agreed that on April 13, 2017 such Preferred Holder’s pro rata amount of 2,000 shares of Existing Preferred Stock would be converted into shares of common stock at a conversion price equal to the greater of (x) $1.00 (the “Floor Price”) and (y) 85% of the lowest of the closing bid price of the common stock on each trading day during the period commencing, and including, the trading day immediately preceding the effective date of the reverse stock split on April 10, 2017 through, and including, the second trading day immediately following the effective date of the reverse stock split on April 10, 2017. | | | | | | | | | |
Preferred Stock conversion shares at pro rata | shares | | | | | | | | 2,000 | | | | | | | | | |
Floor price | $ / shares | | | | | | | | $ 1 | | | | | | | | | |
Conversion of stock, shares converted | shares | | | | | | | 4,974 | | | | | | | | | | |
Aggregate stated value of stock | | | | | | | $ 4,974,000 | | | | | | | | | | |
Subsequent Event | Preferred Stock | Minimum | | | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | | | |
Closing bid price of common stock each trading days | | | | | | | | 85.00% | | | | | | | | | |
Subsequent Event | Series D and H Warrants | | | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | | | |
Warrants exercisable | shares | | | | | | | | | | 1,200 | | | | | | | |
Series F Preferred Stock | Subsequent Event | | | | | | | | | | | | | | | | | |
Subsequent Event [Line Items] | | | | | | | | | | | | | | | | | |
Preferred stock, par value | $ / shares | | | | | | | | | | $ 0.001 | | | | | | | |
Common stock issued, conversion rate | $ / shares | | | | $ 1.06 | | | | | | | | | | | | | |
Conversion of stock, shares converted | shares | | | | 102 | | | | | | | | | | | | | |