Debt Issuance	9 Months Ended
Jan. 30, 2016
Debt Disclosure [Abstract]
Debt Issuance	Debt Issuance During the first quarter of fiscal 2016, we entered into a credit agreement with The Bank of Tokyo-Mitsubishi UFJ, Ltd., as administrative agent, and Bank of America, N.A., as syndication agent, (the “Credit Agreement”). Pursuant to the Credit Agreement, the lenders provided us with senior unsecured lending facilities of up to $1,500,000, consisting of a $1,000,000 unsecured term loan and a $500,000 unsecured revolving line of credit. Interest on borrowings under the Credit Agreement is based on LIBOR plus a spread which can range from 1.125% to 2.000%. This spread, as well as a commitment fee on the unused portion of the facility, are based on our leverage ratio, as defined in the Credit Agreement. Initial borrowings under the Credit Agreement were $1,000,000 under the unsecured term loan and $200,000 under the unsecured revolving line of credit. The term loan and revolving credit facilities will mature no later than June 16, 2020. Upon certain significant asset dispositions, we agreed to use proceeds from such dispositions to effect prepayment of outstanding loan balances under the Credit Agreement. On August 28, 2015, we completed the sale of Patterson Medical, as described further in Note 3 to the Condensed Consolidated Financial Statements. As a result of this sale, $670,000 was repaid on the original outstanding $1,000,000 unsecured term loan. We recorded $5,153 of accelerated debt issuance cost amortization within interest expense concurrent with this early repayment of debt. Additionally, principal payments of $4,125 and $8,250 were made during the three and nine months ended January 30, 2016, respectively. As of January 30, 2016, $321,750 was outstanding under the unsecured term loan at an interest rate of LIBOR plus 1.25%. We are subject to various financial covenants under the Credit Agreement including the maintenance of leverage and interest coverage ratios. In the event of our default, any outstanding obligations may become due and payable immediately. We met the covenants under the Credit Agreement as of January 30, 2016. On June 16, 2015, our previous $300,000 credit facility, which was due to expire in December 2016, was terminated and replaced by the revolving line of credit under the Credit Agreement. As of January 30, 2016, $198,000 was outstanding under our current revolving line of credit. There were no outstanding borrowings under our current or previous revolving lines of credit at April 25, 2015.

Debt Issuance

During the first quarter of fiscal 2016, we entered into a credit agreement with The Bank of Tokyo-Mitsubishi UFJ, Ltd., as administrative agent, and Bank of America, N.A., as syndication agent, (the “Credit Agreement”). Pursuant to the Credit Agreement, the lenders provided us with senior unsecured lending facilities of up to $1,500,000, consisting of a $1,000,000 unsecured term loan and a $500,000 unsecured revolving line of credit. Interest on borrowings under the Credit Agreement is based on LIBOR plus a spread which can range from 1.125% to 2.000%. This spread, as well as a commitment fee on the unused portion of the facility, are based on our leverage ratio, as defined in the Credit Agreement. Initial borrowings under the Credit Agreement were $1,000,000 under the unsecured term loan and $200,000 under the unsecured revolving line of credit. The term loan and revolving credit facilities will mature no later than June 16, 2020.

Upon certain significant asset dispositions, we agreed to use proceeds from such dispositions to effect prepayment of outstanding loan balances under the Credit Agreement. On August 28, 2015, we completed the sale of Patterson Medical, as described further in Note 3 to the Condensed Consolidated Financial Statements. As a result of this sale, $670,000 was repaid on the original outstanding $1,000,000 unsecured term loan. We recorded $5,153 of accelerated debt issuance cost amortization within interest expense concurrent with this early repayment of debt. Additionally, principal payments of $4,125 and $8,250 were made during the three and nine months ended January 30, 2016, respectively. As of January 30, 2016, $321,750 was outstanding under the unsecured term loan at an interest rate of LIBOR plus 1.25%.

We are subject to various financial covenants under the Credit Agreement including the maintenance of leverage and interest coverage ratios. In the event of our default, any outstanding obligations may become due and payable immediately. We met the covenants under the Credit Agreement as of January 30, 2016.

On June 16, 2015, our previous $300,000 credit facility, which was due to expire in December 2016, was terminated and replaced by the revolving line of credit under the Credit Agreement. As of January 30, 2016, $198,000 was outstanding under our current revolving line of credit. There were no outstanding borrowings under our current or previous revolving lines of credit at April 25, 2015.