Equity Incentive Plans - Effects of Stock-Based Compensation Related to Stock Option Awards (Detail) (USD $)
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3 Months Ended | |
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Mar. 31, 2015
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Mar. 31, 2014
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Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items] | ||
Total stock-based compensation | $ 696,353us-gaap_ShareBasedCompensation | $ 530,122us-gaap_ShareBasedCompensation |
Cost of Revenues [Member] | ||
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items] | ||
Total stock-based compensation |
49,186us-gaap_ShareBasedCompensation / us-gaap_IncomeStatementLocationAxis = us-gaap_CostOfSalesMember |
20,412us-gaap_ShareBasedCompensation / us-gaap_IncomeStatementLocationAxis = us-gaap_CostOfSalesMember |
Research and Development [Member] | ||
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items] | ||
Total stock-based compensation |
95,073us-gaap_ShareBasedCompensation / us-gaap_IncomeStatementLocationAxis = us-gaap_ResearchAndDevelopmentExpenseMember |
14,102us-gaap_ShareBasedCompensation / us-gaap_IncomeStatementLocationAxis = us-gaap_ResearchAndDevelopmentExpenseMember |
General and Administrative [Member] | ||
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items] | ||
Total stock-based compensation |
520,737us-gaap_ShareBasedCompensation / us-gaap_IncomeStatementLocationAxis = us-gaap_GeneralAndAdministrativeExpenseMember |
468,855us-gaap_ShareBasedCompensation / us-gaap_IncomeStatementLocationAxis = us-gaap_GeneralAndAdministrativeExpenseMember |
Sales and Marketing [Member] | ||
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items] | ||
Total stock-based compensation |
$ 31,357us-gaap_ShareBasedCompensation / us-gaap_IncomeStatementLocationAxis = us-gaap_SellingAndMarketingExpenseMember |
$ 26,753us-gaap_ShareBasedCompensation / us-gaap_IncomeStatementLocationAxis = us-gaap_SellingAndMarketingExpenseMember |
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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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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