Summary of Significant Accounting Policies - Part Two (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Class of Stock [Line Items]
Fair value of assets held for sale			$ 12,024
Cash proceeds from sale of property			15,126
Proceeds from sales of property and equipment			12	0
Non-controlling interest in joint ventures	0		0		15,633
Net income (loss) attributable to non-controlling interest	36	0	329	0
Affiliated Entity [Member] | ARIZONA
Class of Stock [Line Items]
Proceeds from sales of property and equipment			13,850
Gain on sale of Property			$ 2,315