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Summary of Significant Accounting Policies - Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share for Out of Money Potential Common Shares (Detail) - shares | 3 Months Ended | 9 Months Ended
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Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014
Stock Options With an Exercise Price of $1.04 per Share [Member] |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Out of the money options and warrants excluded | 1,652,000 |  | 1,652,000 |
Stock Options With an Exercise Price of $1.07 per Share [Member] |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Out of the money options and warrants excluded | 50,000 |  | 50,000 |
Stock Options With an Exercise Price of $1.74 per Share [Member] |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Out of the money options and warrants excluded |  | 51,750 |  | 51,750
Stock Options With an Exercise Price of $2.20 per Share [Member] |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Out of the money options and warrants excluded | 952,444 | 969,610 | 952,444 | 969,610
Stock Options With an Exercise Price of $2.73 per Share [Member] |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Out of the money options and warrants excluded | 644,469 | 644,469 | 644,469 | 644,469
Stock Options With an Exercise Price of $2.74 per Share [Member] |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Out of the money options and warrants excluded | 609,399 | 633,835 | 609,399 | 633,835
Stock Options With an Exercise Price of $2.89 per Share [Member] |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Out of the money options and warrants excluded | 944,482 | 983,822 | 944,482 | 983,822
Stock Options With an Exercise Price of $3.25 per Share [Member] |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Out of the money options and warrants excluded | 100,000 | 100,000 | 100,000 | 100,000
Stock Options With an Exercise Price of $3.40 per Share [Member] |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Out of the money options and warrants excluded |  | 100,000 |  | 100,000
Stock Options With an Exercise Price of $3.43 per Share [Member] |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Out of the money options and warrants excluded | 40,000 | 40,000 | 40,000 | 40,000
Stock Options With an Exercise Price of $3.50 per Share [Member] |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Out of the money options and warrants excluded | 100,000 | 100,000 | 100,000 | 100,000
Stock Options With an Exercise Price of $3.90 per Share [Member] |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Out of the money options and warrants excluded | 20,000 | 20,000 | 20,000 | 20,000
Warrants With an Exercise Price of $3.60 per Share [Member] |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Out of the money options and warrants excluded | 1,562,500 | 1,562,500 | 1,562,500 | 1,562,500
Options and Warrants Excluded from Diluted EPS [Member] |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Out of the money options and warrants excluded | 6,675,294 | 5,205,986 | 6,675,294 | 5,205,986

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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Antidilution -URI http://asc.fasb.org/extlink&oid=6505113 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Diluted Earnings Per Share -URI http://asc.fasb.org/extlink&oid=6510752 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Contingent Stock Agreement -URI http://asc.fasb.org/extlink&oid=6508534 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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