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Capital lease obligations (Details 2) (USD $)
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Dec. 31, 2014
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| Summary of assets held under capital leases included in property and equipment | |
| Equipment | $ 1,603,461us-gaap_CapitalLeasedAssetsGross |
| Less: accumulated depreciation | 1,212,222us-gaap_CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation |
| Total | $ 391,239us-gaap_CapitalLeasesBalanceSheetAssetsByMajorClassNet |
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- Definition
Amount before accumulated depreciation of leased physical assets used in the normal conduct of business to produce goods and services. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The total gross amount less the charge for the use of the long-lived depreciable assets subject to a lease meeting the criteria for capitalization. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
The total charge for the use of long-lived depreciable assets subject to a lease meeting the criteria for capitalization. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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