CONVERTIBLE DEBT:
 6 Months Ended
May 31, 2014
Debt Disclosure [Abstract]  
Convertible Debt
CONVERTIBLE DEBT:
In August 2013, the Company settled its Convertible Senior Notes with an aggregate principal amount of $143,750 which were issued in May 2008 in a private placement. The Convertible Senior Notes bore a cash coupon interest rate of 4.0% per annum and the initial conversion rate was 33.9945 shares of common stock per $1 principal amount, equivalent to an initial conversion price of $29.42 per share of common stock. The Convertible Senior Notes were called in the second quarter of fiscal year 2013. No interest was accrued subsequent to May 2013 in accordance with the Indenture. The final settlement amount of $218,870 was paid in cash in August 2013 and was comprised of $143,750 in principal payments and $75,120 in payment of conversion premium. The conversion premium, which represents the total settlement amount less the principal, was recorded as a reduction of "Additional paid-in capital.” The final settlement amount was calculated in accordance with the Indenture based on the volume weighted-average trading price of the Company's common stock over the 60 consecutive trading-day period beginning on and including the third trading day after the related conversion.
Based on a cash coupon interest rate of 4.0%, the Company recorded contractual interest expense of $1,387 and $3,011 during the three and six months ended May 31, 2013, respectively. Based on an effective rate of 8.0%, the Company recorded non-cash interest expenses of $926 and $2,314 for the three and six months ended May 31, 2013, respectively.