Sale of First Choice (Details) (USD $)	12 Months Ended			0 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Sep. 23, 2011 First Choice [Member]	Dec. 31, 2013 First Choice [Member]	Dec. 31, 2013 First Choice [Member] Other Income [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sale of Business Segment subject to adjustments of certain componets of working capital				$ 270,000,000
Sale of Business Segment, Amount received including estimate of components of working capital				329,300,000
Gain on sale of First Choice	0	1,012,000	174,925,000		174,900,000	1,000,000
Sale of Business Segment Working Capital That Parent Disputed, Portion of Disputed Total Awarded					6,400,000
Sale of Business Segment Working Capital That Parent Disputed, Disputed Amount					$ 8,200,000