Long-Term Debt (Maturities) (Details) (USD $)	Dec. 31, 2012		Dec. 31, 2011
Debt Instrument [Line Items]
2013	$ 102,000
2014	32,176,000
2015	52,500,000
2016	256,250,000
2017	0
Thereafter	452,645,000
Total	793,673,000	[1]
Long-term debt	792,426,000		908,295,000
Acquisition Notes [Member] | Non Interest Bearing Acquisition Note [Member]
Debt Instrument [Line Items]
Debt instrument, aggregate principal amount	10,000,000
Long-term debt	8,753,000		13,209,000
STARS [Member] | Acquisition Notes [Member] | Non Interest Bearing Acquisition Note [Member]
Debt Instrument [Line Items]
Debt instrument, aggregate principal amount	$ 15,000,000

[1] Includes the acquisition related remaining note payable of $10.0 million, which is non-interest and discounted to $8.8 million as of December 31, 2012.