Subsequent Events	6 Months Ended
Sep. 28, 2012
Subsequent Events [Abstract]
Subsequent Events [Text Block]	Agreement and Plan of Merger On October 24, 2012, the Company entered into the Merger Agreement with McKesson Corporation, a Delaware corporation (“Parent”) and Palm Merger Sub, Inc., a Florida corporation and a direct wholly owned Subsidiary of Parent (together with Parent, the “Acquiring Parties”) under which the Acquiring Parties will acquire all of the Company's outstanding shares for $29.00 per share in cash. The transaction, which has been approved by the boards of directors of both companies, is subject to customary closing conditions, including all necessary regulatory clearances and the approval of the Company's shareholders. If a change in control of the Company occurs, each holder of the 2012 Notes will have the right to require the Company to repurchase all or part of their outstanding notes for cash at 101% of the aggregate principal amount of the securities repurchased plus accrued and unpaid interest. Each holder of the 2008 Notes will have the opportunity to exchange all or part of their outstanding notes for cash at a price determined under the related indenture. Additionally, upon the occurrence of a change in control (i) all outstanding employee options shall become fully exercisable, (ii) time-based vesting restrictions on all outstanding restricted stock awards shall lapse, and (iii) the target payout opportunities attainable under all outstanding performance-based equity awards shall be deemed to have been fully earned as of the date of the change in control based upon an assumed achievement of all relevant performance goals at the target level. Sale of Business On November 5, 2012, the Company completed the sale of its specialty dental distribution business to a third party for a sale price of $68,000. The assets and liabilities of this business were classified as held for sale as of September 28, 2012 and March 30, 2012.

Subsequent Events

6 Months Ended

Sep. 28, 2012

Agreement and Plan of Merger

On October 24, 2012, the Company entered into the Merger Agreement with McKesson Corporation, a Delaware corporation (“Parent”) and Palm Merger Sub, Inc., a Florida corporation and a direct wholly owned Subsidiary of Parent (together with Parent, the “Acquiring Parties”) under which the Acquiring Parties will acquire all of the Company's outstanding shares for $29.00 per share in cash. The transaction, which has been approved by the boards of directors of both companies, is subject to customary closing conditions, including all necessary regulatory clearances and the approval of the Company's shareholders.

If a change in control of the Company occurs, each holder of the 2012 Notes will have the right to require the Company to repurchase all or part of their outstanding notes for cash at 101% of the aggregate principal amount of the securities repurchased plus accrued and unpaid interest. Each holder of the 2008 Notes will have the opportunity to exchange all or part of their outstanding notes for cash at a price determined under the related indenture.

Additionally, upon the occurrence of a change in control (i) all outstanding employee options shall become fully exercisable, (ii) time-based vesting restrictions on all outstanding restricted stock awards shall lapse, and (iii) the target payout opportunities attainable under all outstanding performance-based equity awards shall be deemed to have been fully earned as of the date of the change in control based upon an assumed achievement of all relevant performance goals at the target level.

Sale of Business

On November 5, 2012, the Company completed the sale of its specialty dental distribution business to a third party for a sale price of $68,000. The assets and liabilities of this business were classified as held for sale as of September 28, 2012 and March 30, 2012.