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CONSOLIDATED BALANCE SHEETS (Parenthetical)
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Dec. 31, 2013
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Dec. 31, 2012
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|---|---|---|
| Statement of Financial Position [Abstract] | ||
| Common limited partner capital, units issued | 29,079,866 | 24,412,427 |
| Common limited partner capital, units outstanding | 29,079,866 | 24,412,427 |
| Subordinated limited partner capital, units issued | 24,409,850 | 24,409,850 |
| Subordinated limited partner capital, units outstanding | 24,409,850 | 24,409,850 |
| General partner interests, units issued | 1,091,453 | 996,320 |
| General partner interests, units outstanding | 1,091,453 | 996,320 |