Loans Payable - Note 6 - MINOSA 2 - Additional Information (Detail)				12 Months Ended
	Aug. 10, 2017 USD ($) Days $ / shares	Oct. 01, 2016 USD ($) Days $ / shares	Mar. 18, 2016 USD ($) Days $ / shares	Dec. 31, 2017 USD ($) shares	Apr. 30, 2017 $ / shares	Mar. 21, 2017 USD ($)	Mar. 11, 2015 USD ($)
Minosa Purchase Agreement [Member] | Loans Payable [Member]
Shares Issued And Outstanding [Line Items]
Debt , maximum borrowing capacity	$ 3,000,000
Amount of loan outstanding	2,700,000
Epsilon Acquisitions, LLC [Member]
Shares Issued And Outstanding [Line Items]
Aggregate amount issuable			$ 6,000,000
Epsilon Acquisitions, LLC [Member] | Notes Payable, Other Payables [Member]
Shares Issued And Outstanding [Line Items]
Amount of loan outstanding				$ 1,000,000		$ 2,000,000
Debt conversion amount	2,000,000			2,000,000
Interest rate, stated percentage		10.00%	10.00%
Number of trading days | Days		75	75
Conversion price of Notes | $ / shares		$ 5.00	$ 5.00		$ 5.00
BCF amount recorded				96,000
Aggregate amount issuable		$ 3,000,000	$ 3,000,000			6,000,000
Debt conversion into equity				3,000,000		$ 3,000,000
Security deposit liability			$ 54,000,000	54,000,000
Epsilon Acquisitions, LLC [Member] | Second AR Epsilon Note [Member]
Shares Issued And Outstanding [Line Items]
Amount of loan outstanding				$ 1,000,000
Note 6 - MINOSA 2 [Member]
Shares Issued And Outstanding [Line Items]
Debt instrument, threshold payment term				60 days
BCF amount recorded				$ 62,925
Debt Instrument, acceleration clause description				The obligations under the Minosa Note may be accelerated upon the occurrence of specified events of default including (a) our failure to pay any amount payable under the Minosa Note on the date due and payable; (b) our failure to perform or observe any term, covenant, or agreement in the Minosa Note or the related documents, subject to a five-day cure period; (c) the occurrence and expiration of all applicable grace periods, if any, of an event of default or material breach by us under any of the other loan documents; (d) the termination of the SPA; (e) commencement of certain specified dissolution, liquidation, insolvency, bankruptcy, reorganization, or similar cases or actions by or against us, in specified circumstances unless dismissed or stayed within 60 days; (f) the entry of a judgment or award against us in excess of $100,000; and (g) the occurrence of a change in control (as defined in the Minosa Note).
Debt instrument, number of shares | shares				100,000
Minimum aggregate offering price				$ 3,000,000
Note 6 - MINOSA 2 [Member] | Stock Purchase Agreement [Member] | Promissory Note [Member]
Shares Issued And Outstanding [Line Items]
Aggregate amount issuable							$ 14,750,000
Note 6 - MINOSA 2 [Member] | Loans Payable [Member]
Shares Issued And Outstanding [Line Items]
Amount of loan outstanding	$ 4,700,000
Interest rate, stated percentage	10.00%
Debt instrument, threshold payment term	60 days
Number of trading days | Days	75
Conversion price of Notes | $ / shares	$ 4.41
Note 6 - MINOSA 2 [Member] | Notes Payable, Other Payables [Member]
Shares Issued And Outstanding [Line Items]
Amount of loan outstanding		$ 2,000,000