Property and equipment (Narrative) (Details) - USD ($) |
3 Months Ended | ||
|---|---|---|---|
Mar. 31, 2016 |
Mar. 31, 2015 |
Feb. 29, 2016 |
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| Property, Plant and Equipment [Abstract] | |||
| Depreciation expense | $ 400 | $ 40,000 | |
| Sales price of corporate headquarters, land and building to a third party | $ 4,000,000 | ||
| Proceeds from sale of property and equipment | 1,748,571 | ||
| Gain on sale of property and equipment (Note 2) | $ 1,919,361 | ||
| X | ||||||||||
- Definition Sales price of corporate headquarters, land and building to a third party. No definition available.
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| X | ||||||||||
- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- Definition The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
- References No definition available.
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