Annual report pursuant to Section 13 and 15(d)

Other Long-Term Liabilities (Components of Other Long-Term Liabilities) (Details)

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Other Long-Term Liabilities (Components of Other Long-Term Liabilities) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Other Liabilities Disclosure [Abstract]    
Straight-line and deferred rent liabilities $ 20,395 $ 18,028
Asset retirement obligations 1,849 1,565
Deferred compensation plan liability 4,080 2,521
Other 847 1,739
Total other long-term liabilities $ 27,171 $ 23,853