Bank Revolving Credit Facility (Tables)

9 Months Ended

Oct. 31, 2011

Bank Revolving Credit Facility and Senior and Subordinated Debt [Abstract]

Available Credit on the Bank Revolving Credit Facility

The following table summarizes the available credit on the Credit Facility:

	October 31, 2011		January 31, 2011
	(in thousands)
Maximum borrowings		$              450,000		$          470,336
Less outstanding balances and reserves:
Borrowings		–		137,152
Letters of credit		74,221		63,418
Surety bonds		–		–
Reserve for retirement of debt		–		46,891
Available credit		$              375,779		$          222,875