Line of Credit	12 Months Ended
Nov. 30, 2013
Line of Credit Facility [Abstract]
Line of Credit	Line of Credit On August 15, 2011, we entered into a credit agreement (the "Credit Agreement") for an unsecured credit facility with J.P. Morgan and other lenders that matures on August 15, 2016, at which time all amounts outstanding must be repaid. The credit facility provides for a revolving line of credit in the amount of $150.0 million, with a sublimit for the issuance of standby letters of credit in a face amount up to $25.0 million and swing line loans up to $20.0 million. The credit facility also permits us to increase the revolving line of credit by up to an additional $75.0 million subject to receiving further commitments from lenders and certain other conditions. We intend to utilize the line of credit for general corporate purposes, including acquisitions, stock repurchases and working capital. Revolving loans accrue interest at a per annum rate based on our choice of either (i) the LIBOR rate plus a margin ranging from 1.25% to 1.75% or (ii) the base rate plus a margin ranging from 0.25% to 0.75%, both depending on our consolidated leverage ratio. The base rate is defined as the highest of (i) the administrative agent’s prime rate (ii) the federal funds rate plus 0.50%, and (iii) the LIBOR rate for a one month interest period plus a margin equal to 1.00%. A quarterly commitment fee on the undrawn portion of the revolving credit facility is required, at a per annum rate ranging from 0.25% to 0.35%, depending on our consolidated leverage ratio. The loan origination fee and issuance costs incurred upon consummation of the Credit Agreement are being amortized through interest expense using the effective interest rate method, over the five year term of the facility. Other customary fees and letter of credit fees may be charged and will be expensed as they are incurred. Accrued interest on the loans is payable quarterly in arrears with respect to base rate loans and at the end of each interest rate period (or at each three month interval in the case of loans with interest periods greater than three months) with respect to LIBOR rate loans. We may prepay, terminate or reduce the loan commitments in whole or in part at any time, without premium or penalty, subject to certain conditions and reimbursement of certain costs in the case of LIBOR rate loans. The Credit Agreement contains customary affirmative and negative covenants, including a requirement to maintain a balance of at least $100.0 million in cash and cash equivalents while making restricted equity-related payments (e.g. cash dividend distributions or share repurchases of our common stock). We are also required to maintain compliance with a consolidated leverage ratio of no greater than 3.00 to 1.00 and a consolidated interest coverage ratio of at least 3.00 to 1.00. As of November 30, 2013, there were no amounts outstanding under the revolving line and $0.8 million of letters of credit outstanding.

Line of Credit

On August 15, 2011, we entered into a credit agreement (the "Credit Agreement") for an unsecured credit facility with J.P. Morgan and other lenders that matures on August 15, 2016, at which time all amounts outstanding must be repaid. The credit facility provides for a revolving line of credit in the amount of $150.0 million, with a sublimit for the issuance of standby letters of credit in a face amount up to $25.0 million and swing line loans up to $20.0 million. The credit facility also permits us to increase the revolving line of credit by up to an additional $75.0 million subject to receiving further commitments from lenders and certain other conditions. We intend to utilize the line of credit for general corporate purposes, including acquisitions, stock repurchases and working capital.

Revolving loans accrue interest at a per annum rate based on our choice of either (i) the LIBOR rate plus a margin ranging from 1.25% to 1.75% or (ii) the base rate plus a margin ranging from 0.25% to 0.75%, both depending on our consolidated leverage ratio. The base rate is defined as the highest of (i) the administrative agent’s prime rate (ii) the federal funds rate plus 0.50%, and (iii) the LIBOR rate for a one month interest period plus a margin equal to 1.00%. A quarterly commitment fee on the undrawn portion of the revolving credit facility is required, at a per annum rate ranging from 0.25% to 0.35%, depending on our consolidated leverage ratio. The loan origination fee and issuance costs incurred upon consummation of the Credit Agreement are being amortized through interest expense using the effective interest rate method, over the five year term of the facility. Other customary fees and letter of credit fees may be charged and will be expensed as they are incurred.

Accrued interest on the loans is payable quarterly in arrears with respect to base rate loans and at the end of each interest rate period (or at each three month interval in the case of loans with interest periods greater than three months) with respect to LIBOR rate loans. We may prepay, terminate or reduce the loan commitments in whole or in part at any time, without premium or penalty, subject to certain conditions and reimbursement of certain costs in the case of LIBOR rate loans. The Credit Agreement contains customary affirmative and negative covenants, including a requirement to maintain a balance of at least $100.0 million in cash and cash equivalents while making restricted equity-related payments (e.g. cash dividend distributions or share repurchases of our common stock). We are also required to maintain compliance with a consolidated leverage ratio of no greater than 3.00 to 1.00 and a consolidated interest coverage ratio of at least 3.00 to 1.00. As of November 30, 2013, there were no amounts outstanding under the revolving line and $0.8 million of letters of credit outstanding.