Sale Leaseback Transaction (Details) $ in Millions	1 Months Ended	12 Months Ended
	Mar. 31, 2007 USD ($)	Dec. 31, 2015 USD ($) extension
Sale Leaseback Transaction [Abstract]
Sale leaseback transaction, net proceeds	$ 58.1
Sale leaseback transaction, carrying value of property sold	20.3
Sale leaseback transaction, transaction gain recognized	1.3
Sale leaseback transaction, total transaction gain	37.4
Sale leaseback transaction, transaction gain deferred	$ 36.1
Lease expiration date		2022
Number of option lease extensions | extension		2
Option lease extension period (in years)		5 years
Sale leaseback transaction, annual rental payments		$ 4.2
Sale leaseback transaction, annual rent escalation percentage (as a percent)		2.00%
Sale leaseback transaction, future annual rental payments beginning on April First Two Thousand and Seventeen		$ 4.5
Sale leaseback transaction, future annual rent increase prcentage beginning on April First Two Thousand and Seventeen (as a percent)		2.00%