Debt and Fair Value of Financial Instruments - Additional Information (Detail) - USD ($)					6 Months Ended
	Mar. 31, 2017	Feb. 08, 2017	Feb. 07, 2017	Sep. 02, 2016	Jun. 30, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Warrant liability				$ 2,100,000	$ 1,100,000
Proceeds from short term secured borrowing arrangement					$ 2,000,000
Interest rate per annum					10.00%
Debt discount					$ 1,600,000	$ 1,900,000
Long-term debt, net, carrying amount					2,300,000	1,900,000
Debt issuance costs					$ 100,000	$ 200,000
Unterberg Koller Capital Fund L.P. and William W. and Dieva L. Smith [Member] | Note and Warrant Purchase Agreement [Member]
Debt Instrument [Line Items]
Purchase of warrants				1,700,000
Common stock exercise price				$ 2.74
Warrants expiration period					5 years
Notes and warrants issuance date					Sep. 06, 2016
Unterberg Koller Capital Fund L.P. and William W. and Dieva L. Smith [Member] | Senior Subordinated Notes [Member] | Note and Warrant Purchase Agreement [Member]
Debt Instrument [Line Items]
Aggregate principal amount				$ 4,000,000
William W. and Dieva L. Smith [Member] | Secured Promissory Note [Member]
Debt Instrument [Line Items]
Proceeds from short term secured borrowing arrangement			$ 1,000,000
Interest rate per annum			18.00%
Notes due date					Mar. 24, 2017
Debt instrument extended maturity date					Jun. 26, 2017
William W. and Dieva L. Smith [Member] | Note and Warrant Purchase Agreement [Member]
Debt Instrument [Line Items]
Purchase of warrants				850,000
Common stock exercise price				$ 2.74
Warrants expiration period				5 years
Notes and warrants issuance date					Sep. 06, 2016
William W. and Dieva L. Smith [Member] | New Short-term Secured Borrowing Arrangement [Member] | Secured Promissory Note [Member]
Debt Instrument [Line Items]
Aggregate principal amount					$ 1,000,000
Interest rate per annum					12.00%
Notes due date					Sep. 25, 2017
Notes due date, description					The maturity date of the Amended Note entered into with Smith may be extended by up to 180 days upon the mutual consent of the Company and Smith. Each of the Amended Notes are secured by the Company’s accounts receivable and certain other assets.
William W. and Dieva L. Smith [Member] | Senior Subordinated Notes [Member] | Note and Warrant Purchase Agreement [Member]
Debt Instrument [Line Items]
Aggregate principal amount				$ 2,000,000
Steven L. and Monique P. Elfman [Member] | Secured Promissory Note [Member]
Debt Instrument [Line Items]
Proceeds from short term secured borrowing arrangement		$ 1,000,000
Interest rate per annum		18.00%
Notes due date					Mar. 24, 2017
Steven L. and Monique P. Elfman [Member] | New Short-term Secured Borrowing Arrangement Matured on June 23, 2017 [Member] | Secured Promissory Note [Member]
Debt Instrument [Line Items]
Proceeds from short term secured borrowing arrangement	$ 1,000,000
Notes due date					Jun. 23, 2017
Steven L. and Monique P. Elfman [Member] | New Short-term Secured Borrowing Arrangement [Member] | Secured Promissory Note [Member]
Debt Instrument [Line Items]
Aggregate principal amount					$ 1,000,000
Interest rate per annum					12.00%
Notes due date					Sep. 25, 2017