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Geographic information (Details) (USD $)
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12 Months Ended | |
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Dec. 31, 2013
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Dec. 31, 2012
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| Revenues from External Customers and Long-Lived Assets [Line Items] | ||
| Revenues - owned units | $ 38,648,050 | $ 56,429,452 |
| Management, incentive and royalty fee revenue | 7,336,629 | 3,691,270 |
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United States [Member]
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| Revenues from External Customers and Long-Lived Assets [Line Items] | ||
| Revenues - owned units | 38,648,050 | 56,429,452 |
| Management, incentive and royalty fee revenue | 4,979,190 | 3,496,914 |
| Net assets (liabilities) | 7,572,058 | 3,031,053 |
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Foreign [Member]
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| Revenues from External Customers and Long-Lived Assets [Line Items] | ||
| Revenues - owned units | ||
| Management, incentive and royalty fee revenue | 2,357,438 | 194,356 |
| Net assets (liabilities) | $ 654,579 | $ (542,306) |
| X | ||||||||||
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- Definition
The net of assets and liabilities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Aggregate revenue during the period from services rendered in the normal course of business, after deducting allowances and discounts. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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