XML 21 R29.htm IDEA: XBRL DOCUMENT v2.4.0.6
Line Of Credit Facility (Details) (USD $)
 9 Months Ended 0 Months Ended 0 Months Ended
Oct. 31, 2011
Apr. 25, 2011
Line Of Credit Facility [Member]
Oct. 31, 2011
Line Of Credit Facility [Member]
Apr. 25, 2011
Amendment [Member]
Oct. 31, 2011
Maximum [Member]
Oct. 31, 2011
Minimum [Member]
Line of Credit Facility [Line Items]            
Line of credit facility, extension of term per amendment, number of years three          
Changes in available credit limit   $ 100,000,000   $ 175,000,000    
Interest rate on cash advances in addition to LIBOR         1.50% 0.50%
Line of credit facility, covenant terms The covenants also include limitations on the Company's capital expenditures, ability to repurchase shares and the payment of cash dividends. On October 31, 2011, the Company further amended the Line to revise certain financial covenants which included removing the limitation on share repurchases, as well as to join certain subsidiaries of the Company as additional borrowers and guarantors and release certain others.          
Remaining borrowings under the credit facility     0      
Outstanding letters of credit and stand-by letters of credit     60,532,000      
Available credit, including accordion feature     $ 114,468,000