Summary of Significant Accounting Policies - Part Two (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Class of Stock [Line Items]
Fair value of assets held for sale			$ 19,943	$ 4,581
Cash proceeds from sale of property			27,074	7,130
Proceeds from sales of property and equipment			12	0
Gain on sale of Property			7,131	2,549
Non-controlling interest in joint ventures	0		0		15,633
Net income (loss) attributable to non-controlling interest	$ 0	$ 899	$ 329	$ 899