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Quarterly Financial Data - Unaudited - Quarterly Financial Data (Detail) (USD $) | 3 Months Ended | 12 Months Ended
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Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Selected Quarterly Financial Information [Abstract] |  |  |  |  |  |  |  |  |  |  |
Revenue - net | $ 288,486 us-gaap_Revenues | $ 120,046 us-gaap_Revenues | $ 348,264 us-gaap_Revenues | $ 566,086 us-gaap_Revenues | $ 17,242,672 us-gaap_Revenues | $ 5,554,460 us-gaap_Revenues | $ 253,745 us-gaap_Revenues | $ 863,072 us-gaap_Revenues | $ 1,322,882 us-gaap_Revenues | $ 23,913,949 us-gaap_Revenues | $ 13,197,515 us-gaap_Revenues
Gross profit | 245,915 us-gaap_GrossProfit | 93,020 us-gaap_GrossProfit | 290,379 us-gaap_GrossProfit | 446,481 us-gaap_GrossProfit | 16,958,243 us-gaap_GrossProfit | 5,384,887 us-gaap_GrossProfit | 158,661 us-gaap_GrossProfit | 717,371 us-gaap_GrossProfit |  |  |
Net income (loss) | $ (5,243,352)us-gaap_ProfitLoss | $ (7,415,124)us-gaap_ProfitLoss | $ (4,015,881)us-gaap_ProfitLoss | $ (9,798,757)us-gaap_ProfitLoss | $ 10,751,476 us-gaap_ProfitLoss | $ (931,393)us-gaap_ProfitLoss | $ (10,895,976)us-gaap_ProfitLoss | $ (9,665,379)us-gaap_ProfitLoss | $ (28,662,488)us-gaap_ProfitLoss | $ (14,861,309)us-gaap_ProfitLoss | $ (18,184,113)us-gaap_ProfitLoss
Basic and diluted net income (loss) per share | $ (0.06)us-gaap_EarningsPerShareBasicAndDiluted | $ (0.09)us-gaap_EarningsPerShareBasicAndDiluted | $ (0.05)us-gaap_EarningsPerShareBasicAndDiluted | $ (0.12)us-gaap_EarningsPerShareBasicAndDiluted | $ 0.13 us-gaap_EarningsPerShareBasicAndDiluted | $ (0.01)us-gaap_EarningsPerShareBasicAndDiluted | $ (0.14)us-gaap_EarningsPerShareBasicAndDiluted | $ (0.12)us-gaap_EarningsPerShareBasicAndDiluted | $ (0.31)us-gaap_EarningsPerShareBasicAndDiluted | $ (0.13)us-gaap_EarningsPerShareBasicAndDiluted | $ (0.25)us-gaap_EarningsPerShareBasicAndDiluted

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- Definition The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. + References No definition available. + Details
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- Definition Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1,2) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4K -URI http://asc.fasb.org/extlink&oid=35736750&loc=SL4591552-111686 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4569616-111683 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=18733093&loc=SL4573702-111684 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4J -URI http://asc.fasb.org/extlink&oid=35736750&loc=SL4591551-111686 + Details
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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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