Commitments and Contingencies (Detail) $ in Thousands	Dec. 31, 2016 USD ($)
Line of Credit Facility [Line Items]
Related Party, Total	$ 1,750
Related Party, Debt Discounts	(156)
Related Party, Total, net of debt discounts	1,594
Long-term, Total	1,003
Long-term, Debt Discounts	(65)
Long-term, Total, net of debt discounts	938
Short-term, Total	81
Short-term, Debt Discounts
Short-term, Total, net of debt discounts	81
Chang Family Trust
Line of Credit Facility [Line Items]
Related Party, Total	1,000
Chang Family Trust
Line of Credit Facility [Line Items]
Related Party, Total	500
Glenhill Concentrated Long Master Fund, LLC
Line of Credit Facility [Line Items]
Related Party, Total	250
Accredited Investor
Line of Credit Facility [Line Items]
Long-term, Total	700
Accredited Investor
Line of Credit Facility [Line Items]
Long-term, Total	160
Accredited Investor
Line of Credit Facility [Line Items]
Long-term, Total	80
Ascentium Capital, LLC
Line of Credit Facility [Line Items]
Short-term, Total	22
Ascentium Capital, LLC
Line of Credit Facility [Line Items]
Long-term, Total	42
Short-term, Total	24
Royal Bank America Leasing, L.P.
Line of Credit Facility [Line Items]
Short-term, Total	25
Ascentium Capital, LLC
Line of Credit Facility [Line Items]
Long-term, Total	21
Short-term, Total	$ 10