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Debt Arrangements (Details) (USD $)	3 Months Ended
Debt Arrangements (Details) (USD $)	Jun. 30, 2012
Debt Instrument [Line Items]
Borrowings under the senior secured credit facility	$ 165,000
Interest rate, stated percentage	8.50%
Ratio of EBITDA to Fixed Charges	200.00%
Senior Subordinated Notes [Member] \| 8% Senior Notes Due 2012 [Member]
Debt Instrument [Line Items]
Long-term debt	$ 6,000

Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date before deducting unamortized discount or premiums (if any). 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.

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