Summary of Significant Accounting Policies (Income Taxes Paid) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Accounting Policies [Abstract]
Income taxes paid, net		$ 7,000,000	$ 830,000
Proceeds from Income Tax Refunds	$ 830,000