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Subsequent Events	12 Months Ended
Subsequent Events	Dec. 31, 2017
Subsequent Events [Abstract]
Subsequent Events	28. Subsequent Events In February 2018, the Partnership executed a PSA to acquire a tract of land in Douglas County, NE. If the land is successfully acquired, it will be classified as “Land held for development.” In February 2018, the Partnership closed on the purchase of two contiguous tracks of land for future development in Douglas County, NE. The purchase price totaled approximately $2.6 million.