Financing Arrangement (Details) - Tax Increment Financing Obligation Bond [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Financing Obligation [Line Items]
Term of period for financing obligation payments	20 years
Expiration date for financing obligation	Oct. 31, 2019
Discount rate of financing obligation	6.93%
Acquisition date of financing obligation	Dec. 01, 2007
Purchase price of real estate	$ 660.0
Financing obligation	$ 7.4	$ 9.0