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Stockholders' Equity - Additional Information (Detail) - USD ($) |  |  | 1 Months Ended | 3 Months Ended | 6 Months Ended |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Apr. 06, 2017 | Oct. 14, 2015 | Mar. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2017 | Sep. 30, 2016 | Mar. 31, 2017 | Nov. 30, 2016 | Mar. 31, 2016 | Dec. 15, 2015 | Feb. 28, 2015 | Jul. 31, 2014
Stockholders Equity Note [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Common Stock, shares authorized |  |  |  | 100,000,000 | 100,000,000 |  | 100,000,000 |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights |  |  |  | 19,000 | 19,000 |  |  |  |  |  | 10,000 | 100,000
Class of Warrant or Right, Exercise Price of Warrants or Rights |  |  |  |  |  |  |  | $ 9.00 |  |  | $ 9.00 | $ 10.00
Common Stock, Shares, Issued |  |  |  | 6,052,518 | 6,052,518 |  | 6,033,518 |  |  |  |  |
Proceeds from Issuance of Common Stock |  |  |  | $ 0 | $ 94,500 |  |  |  |  |  |  |
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized |  |  |  | $ 616,000 | $ 616,000 |  |  |  |  |  |  |
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition |  |  |  |  | 1 year 7 months 6 days |  |  |  |  |  |  |
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price |  |  |  |  | $ 9.71 |  |  |  |  |  |  |
Proceeds from Warrant Exercises |  |  |  |  | $ 85,500 | $ 172,000 |  |  |  |  |  |
Common Stock Shares Outstanding |  |  |  | 6,052,518 | 6,052,518 |  | 6,033,518 |  |  |  |  |
Number Of Warrants Exercised |  |  |  | 19,000 | 19,000 |  |  |  |  |  |  |
Warrants To Purchase Common Stock Shares |  |  |  |  |  |  |  | 5,000 |  |  |  |
Class of Warrant or Right, Additinal Number of Securities Called by Warrants or Rights |  |  |  | 21,000 | 21,000 |  |  |  |  |  |  |
Employee Stock Option [Member] |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation |  |  |  |  | $ 143,000 |  |  |  |  |  |  |
Series A Preferred Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Restricted shares granted to agent |  | 1,111,111 |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights |  | $ 9.00 |  |  |  |  |  |  |  |  |  |
Preferred Stock, Liquidation Preference Per Share |  | $ 9.00 |  |  |  |  |  |  |  |  |  |
Preferred Stock, Conversion Basis |  |  |  |  | The Series A Preferred Stock is mandatorily convertible not sooner than the earlier to occur of (i) the later of (x) January 31, 2017 or (y) 60 days after the date on which the Company files its quarterly report on Form 10-Q for the period ending September 30, 2016, or (ii) the date on which the Company receives the written, irrevocable decision of NMM not to require a redemption of the Series A Preferred Stock, if the Company receive aggregate gross proceeds of not less than $5,000,000 in one or more transactions for the sale of the Companys equity or convertible securities (other than transactions with NMM). The Company has not received at least $5,000,000 in one or more transactions for the sale of its equity or convertible securities to parties other than NMM. |  |  |  |  |  |  |
Preferred Stock Shares Authorized |  |  |  | 5,000,000 | 5,000,000 |  | 5,000,000 |  |  |  |  |
Preferred Stock, Shares Issued |  |  |  | 1,111,111 | 1,111,111 |  | 1,111,111 |  |  |  |  |
Series B Preferred Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Restricted shares granted to agent |  |  | 555,555 |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights |  |  | $ 10.00 |  |  |  |  |  |  |  |  |
Stock Issued During Period, Value, New Issues |  |  | $ 4,999,995 |  |  |  |  |  |  |  |  |
Preferred Stock, Liquidation Preference Per Share |  |  | $ 9.00 |  |  |  |  |  |  |  |  |
Preferred Stock, Conversion Basis |  |  |  |  | (i) at the option of NMM or (ii) mandatorily at any time prior to and including March 30, 2021, if the Company receives aggregate gross proceeds of not less than $5,000,000 in one or more transactions for the sale of the Companys equity or convertible securities (other than transactions with NMM), at an initial conversion rate of one-for-one, subject to adjustment in the event of stock dividends, stock splits and certain other similar transactions. The Company has not received at least $5,000,000 in one or more transactions for the sale of its equity or convertible securities to parties other than NMM. |  |  |  |  |  |  |
Preferred Stock Shares Authorized |  |  |  | 5,000,000 | 5,000,000 |  | 5,000,000 |  |  |  |  |
Preferred Stock, Shares Issued |  |  |  | 555,555 | 555,555 |  | 555,555 |  |  |  |  |
Series B Warrant [Member] |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights |  |  |  |  |  |  |  |  | 555,555 |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights |  |  |  |  |  |  |  |  | $ 10.00 |  |  |
warrants 2013 [Member] |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights |  |  |  | $ 4.50 | $ 4.50 |  |  |  |  |  |  |
Warrants To Purchase Common Stock Shares |  |  |  |  |  |  |  | 24,000 |  |  |  |
Series A Warrant [Member] |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights |  |  |  |  |  |  |  |  | 1,111,111 |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights |  |  |  |  |  |  |  |  | $ 9.00 |  |  |
Directors |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Share price | $ 9.25 |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Grants In Period, Gross | 80,000 |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price | $ 10.18 |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value | $ 572,000 |  |  |  |  |  |  |  |  |  |  |
Directors | Maximum |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Expected volatility rate | 134.83% |  |  |  |  |  |  |  |  |  |  |
Risk free interest rate | 2.09% |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term | 6 years |  |  |  |  |  |  |  |  |  |  |
Directors | Minimum |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Expected volatility rate | 109.95% |  |  |  |  |  |  |  |  |  |  |
Risk free interest rate | 1.53% |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term | 3 years |  |  |  |  |  |  |  |  |  |  |
2015 Equity Incentive Plan |  |  |  |  |  |  |  |  |  |  |  |
Stockholders Equity Note [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Equity incentive plan, shares authorized for issuance |  |  |  | 941,000 | 941,000 |  |  |  |  | 1,500,000 |  |

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- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Describe the conversion features of preferred stock if preferred stock is convertible. That is, shares of preferred stock into which another convertible security was converted, or shares of preferred stock into which another class of preferred stock was converted. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21475-112644 + Details
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- Definition The per share liquidation preference (or restrictions) of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21475-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21484-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(d)(1)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(d)(1)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition The cash inflow from the additional capital contribution to the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3255-108585 + Details
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iv) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(i) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.D.2) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 + Details
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