Summary of Significant Accounting Policies: (Details 3) (USD $) In Thousands, unless otherwise specified	12 Months Ended	1 Months Ended
	Dec. 31, 2012 item	Sep. 30, 2011 Consolidated variable interest entities
Variable interest entities included in the consolidated financial statements
Redemption of noncontrolling interests		$ 11,366
Acquisitions
Number of forms of in-place operating lease intangible assets and liabilities	3