Commitments and contingencies (Details) (USD $)	Feb. 13, 2013
Commitments and contingencies details
Awarding significant damages to American Realty Trust, Inc.	$ 960,646.28
Increased costs damages in favor of TCI and its subsidiaries	11,161,520
lost opportunity' damages in favor of TCI and its subsidiaries	12,122,166.28
Loans to be made to the entities under the original loan commitment	160,000,000
Additional lost opportunity' damages in favor of TCI and its subsidiaries	$ 252,577