Debt Obligations (Schedule of Long Term Debt Maturities) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Long-term Debt, Fiscal Year Maturity [Abstract]
2013	$ 21,265
2014	23,721
2015	24,344
2016	33,865
2017	243,695
2018 and beyond	17,591
Total long term obligations	$ 364,481	$ 346,904

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year.

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