Intangible Assets (Textual) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Noncash project abandonment costs	$ 0	$ 0	$ 937,000
Net amortization expense of intangible assets and liabilities	$ 16,900,000	$ 3,300,000	$ 305,000