Securities	3 Months Ended
Aug. 01, 2015
Investments, Debt and Equity Securities [Abstract]
Securities	7. Securities On October 25, 2013, we invested in three time deposits with total principal of $110,000 Canadian. On October 24, 2014, time deposits with a principal value of $45,000 Canadian matured with a value of $45,436 Canadian. The remaining time deposits with a principal value of $65,000 Canadian were classified as short-term investments at August 1, 2015 with a U.S. dollar equivalent value of $49,651. Our time deposit securities are classified as held-to-maturity securities as we have both the intent and ability to hold until maturity. They are carried at cost, adjusted for accrued interest and amortization. The carrying value is not materially different than fair value. The fair value was determined based on a discounted cash flow analysis using unobservable inputs (i.e. level 3 inputs), which include a forward yield curve, the estimated timing of payments and the credit quality of the underlying creditor. Significant changes in any of the significant unobservable inputs in isolation would not result in a materially lower fair value estimate. The interrelationship between these inputs is insignificant.

Securities

3 Months Ended

Aug. 01, 2015

Investments, Debt and Equity Securities [Abstract]

7. Securities

On October 25, 2013, we invested in three time deposits with total principal of $110,000 Canadian. On October 24, 2014, time deposits with a principal value of $45,000 Canadian matured with a value of $45,436 Canadian. The remaining time deposits with a principal value of $65,000 Canadian were classified as short-term investments at August 1, 2015 with a U.S. dollar equivalent value of $49,651. Our time deposit securities are classified as held-to-maturity securities as we have both the intent and ability to hold until maturity. They are carried at cost, adjusted for accrued interest and amortization. The carrying value is not materially different than fair value. The fair value was determined based on a discounted cash flow analysis using unobservable inputs (i.e. level 3 inputs), which include a forward yield curve, the estimated timing of payments and the credit quality of the underlying creditor. Significant changes in any of the significant unobservable inputs in isolation would not result in a materially lower fair value estimate. The interrelationship between these inputs is insignificant.