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Notes Payable and Revolving Loan Agreement (Schedule Of Maturities Of Long Term Debt) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013	Dec. 31, 2012
Notes Payable and Revolving Line of Credit [Abstract]
2016		$ 1,500
Total	$ 210,048us-gaap_LongTermDebt	$ 1,500us-gaap_LongTermDebt	$ 33,206us-gaap_LongTermDebt

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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