Summary of Activity of Level 3 Inputs Measured on Recurring Basis (Detail) - USD ($)	12 Months Ended
Mar. 31, 2017	Mar. 31, 2016
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Fair value of warrant issued - NMM	$ 2,922,222
Fair Value, Inputs, Level 3
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance, beginning of period	2,811,111	$ 2,586,854
Fair value of warrant reclassified to equity	(1,177,778)
Change in fair value of warrant liability	(1,633,333)
Warrant adjustments		(999,724)
Conversion of warrants and convertible note to common stock - NNA		(2,106,933)
Fair value of warrant issued - NMM		2,922,222
Change in fair value of warrant and conversion feature liability		408,692
Balance, end of period	0	2,811,111
Fair Value, Inputs, Level 3 \| Warrant Liability
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance, beginning of period	2,811,111	2,144,496
Fair value of warrant reclassified to equity	(1,177,778)
Change in fair value of warrant liability	(1,633,333)
Warrant adjustments		(999,724)
Conversion of warrants and convertible note to common stock - NNA		(1,624,029)
Fair value of warrant issued - NMM		2,922,222
Change in fair value of warrant and conversion feature liability		368,146
Balance, end of period	0	2,811,111
Fair Value, Inputs, Level 3 \| Conversion Feature Liability
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance, beginning of period	0	442,358
Fair value of warrant reclassified to equity	0
Change in fair value of warrant liability	0
Warrant adjustments		0
Conversion of warrants and convertible note to common stock - NNA		(482,904)
Fair value of warrant issued - NMM		0
Change in fair value of warrant and conversion feature liability		40,546
Balance, end of period	$ 0	$ 0

Conversion of warrants and convertible note.

No definition available.

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- Definition

Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Conversion Feature Liability gain or loss.

+ References

No definition available.

+ Details

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- Definition

Amount of fair value measurement with unobservable inputs reconciliations recurring basis warrant and conversion feature liability gain or loss.

+ References

No definition available.

+ Details

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- Definition

Part noncash refers to that portion of the transaction pursuant to reclassification of warrant to equity not resulting in cash receipts or cash payments in the period.

+ References

No definition available.

+ Details

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- Definition

Part noncash refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

No definition available.

+ Details

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- Definition

Amount of expense (income) related to adjustment to fair value of warrant liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 480
-SubTopic 10
-Section 25
-Paragraph 13
-URI http://asc.fasb.org/extlink&oid=6939902&loc=d3e20148-110875

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

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