CONSOLIDATED STATEMENTS OF LOSS (Parenthetical) - USD ($)	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Pretax Gain on Sale of Geo	$ 7,000,000	$ 0	$ 0
Loss on sale of Zhongtian	$ 3,300,000	$ 0	$ 0

This element represents the amount of gain (loss) on sale of properties during the reporting period gross of the applicable income taxes realized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 974
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-15.(a)(1)(ii)
-URI http://asc.fasb.org/extlink&oid=6875705&loc=d3e641549-123027

Name:	us-gaap_GainLossOnSaleOfPropertiesBeforeApplicableIncomeTaxes
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration