Other long-term assets (Schedule of Other Long-Term Assets) (Details) - USD ($) |
3 Months Ended | |
|---|---|---|
Mar. 31, 2018 |
Mar. 31, 2017 |
|
| Patents: | ||
| Cost, beginning | $ 509,649 | |
| Cost, ending | 519,113 | |
| Additions | (14,610) | $ (18,000) |
| Goodwill: | ||
| Goodwill, beginning | 1,186,496 | |
| Additions | ||
| Goodwill, ending | 1,186,496 | |
| Convertible Note Investment: | ||
| Convertible Note Investment, beginning | 200,000 | |
| Convertible Note Investment , ending | 200,000 | |
| Total other long-term assets: | ||
| Cost, beginning | 2,446,328 | |
| Additions | 24,074 | |
| Cost, ending | 2,470,402 | |
| Additions | (52,974) | |
| Other long-term assets, net, beginning | 1,896,145 | |
| Additions | 9,464 | |
| Other long-term assets, net, ending | 1,905,609 | |
| Patents [Member] | ||
| Patents: | ||
| Cost, beginning | 1,059,832 | |
| Additions | 24,074 | |
| Cost, ending | 1,083,906 | |
| Accumulated amortization, beginning | (550,183) | |
| Additions | (14,610) | |
| Accumulated amortization, ending | $ (564,793) | |
| X | ||||||||||
- Definition Total accumulated amortization of intangible assets and goodwill Additions. No definition available.
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| X | ||||||||||
- Definition Additions of other long term assets during the period. No definition available.
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| X | ||||||||||
- Definition Convertible Note Investment. No definition available.
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Total additions to other long-term assets during the period. No definition available.
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| X | ||||||||||
- Definition Total cost of other long-term assets. No definition available.
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| X | ||||||||||
- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of noncurrent assets classified as other. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Details
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