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Long Term Debt (Current & Noncurrent Breakout) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Debt Disclosure Current [Abstract]
Long-term debt	$ 447,963	$ 283,215
Less current portion	10,800	6,648
Long-term debt, gross	$ 458,763	$ 289,863

Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date. May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any.

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