Income Taxes	9 Months Ended
Jan. 28, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The effective income tax rate from continuing operations for the three months ended January 28, 2017 was 23.2% compared to 33.4% for the three months ended January 30, 2016, and for the nine months ended January 28, 2017 was 31.9% compared to 41.1% for the nine months ended January 30, 2016. The decrease in the rate for the three months ended January 28, 2017 was primarily due to a change in estimate of the tax impact of the cash repatriation and a geographical shift in profit due to the non-cash impairment charge related to our decision not to extend sales exclusivity with Sirona Dental Systems. The decrease in the rate for the nine months ended January 28, 2017 was primarily due to the prior year impact of cash repatriation and transaction-related costs incurred in connection with the acquisition of Animal Health International, Inc. In addition, the current period rates included excess tax benefits from the adoption of ASU No. 2016-09 of $177 and $2,169 for the three and nine months ended January 28, 2017, respectively. In the first quarter of fiscal 2016, we approved a one-time repatriation of approximately $200,000 of foreign earnings. This one-time repatriation reduced the overall cost of funding the acquisition of Animal Health International, Inc. In addition, certain foreign cash at Patterson Medical was required to be repatriated as part of the sale transaction. The continuing operations tax impact of $12,300 from the repatriation was recorded during the first nine months of fiscal 2016. During the third quarter of fiscal year 2017, we recorded a $2,406 benefit related to a change in estimate of the tax impact of the cash repatriation in the third quarter of fiscal year 2017.

Income Taxes

9 Months Ended

Jan. 28, 2017

The effective income tax rate from continuing operations for the three months ended January 28, 2017 was 23.2% compared to 33.4% for the three months ended January 30, 2016, and for the nine months ended January 28, 2017 was 31.9% compared to 41.1% for the nine months ended January 30, 2016. The decrease in the rate for the three months ended January 28, 2017 was primarily due to a change in estimate of the tax impact of the cash repatriation and a geographical shift in profit due to the non-cash impairment charge related to our decision not to extend sales exclusivity with Sirona Dental Systems. The decrease in the rate for the nine months ended January 28, 2017 was primarily due to the prior year impact of cash repatriation and transaction-related costs incurred in connection with the acquisition of Animal Health International, Inc. In addition, the current period rates included excess tax benefits from the adoption of ASU No. 2016-09 of $177 and $2,169 for the three and nine months ended January 28, 2017, respectively.

In the first quarter of fiscal 2016, we approved a one-time repatriation of approximately $200,000 of foreign earnings. This one-time repatriation reduced the overall cost of funding the acquisition of Animal Health International, Inc. In addition, certain foreign cash at Patterson Medical was required to be repatriated as part of the sale transaction. The continuing operations tax impact of $12,300 from the repatriation was recorded during the first nine months of fiscal 2016. During the third quarter of fiscal year 2017, we recorded a $2,406 benefit related to a change in estimate of the tax impact of the cash repatriation in the third quarter of fiscal year 2017.