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Sum of net book value of Property based on physical location (Details) (USD $)
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Dec. 31, 2013
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Dec. 31, 2012
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|---|---|---|
| Sum of net book value of Property based on physical location | ||
| United States | $ 9,890,924 | $ 12,261,233 |
| Canada | 1,751,595 | 3,258,071 |
| Total | $ 11,642,519 | $ 15,519,304 |