Receivables	12 Months Ended
Apr. 30, 2016
Receivables [Abstract]
Receivables	Note 9. Receivables We sell our products throughout the United States and in certain foreign countries on credit terms we establish for each customer. On the sale of certain products, we have the ability to file a contractor’s lien against the product installed as collateral and to file claims against surety bonds to protect our interest in receivables. Foreign sales are at times secured by irrevocable letters of credit or bank guarantees. Accounts receivable are reported net of an allowance for doubtful accounts of $2,797 and $2,316 at April 30, 2016 and May 2, 2015, respectively. Included in accounts receivable as of April 30, 2016 and May 2, 2015 was $437 and $385, respectively, of retainage on construction-type contracts, all of which are expected to be collected within one year. We make estimates regarding the collectability of our accounts receivable, long-term receivables, costs and estimated earnings in excess of billings and other receivables. In evaluating the adequacy of our allowance for doubtful accounts, we analyze specific balances, customer creditworthiness, changes in customer payment cycles, and current economic trends. If the financial condition of any customer were to deteriorate, resulting in an impairment of its ability to make payments, additional allowances may be required. We charge off receivables at such time as it is determined collection will not occur. Charge-offs of receivables and our allowance for doubtful accounts related to financing receivables are not material to our financial results. In connection with certain sales transactions, we have entered into sales contracts with installment payments exceeding six months and sales-type leases. The present value of these contracts and leases is recorded as a receivable as the revenue is recognized in accordance with U.S. GAAP, and profit is recognized to the extent the present value is in excess of cost. We generally retain a security interest in the equipment or in the cash flow generated by the equipment until the contract is paid. The present value of long-term contracts and lease receivables, including accrued interest and current maturities, was $7,038 and $9,874 as of April 30, 2016 and May 2, 2015, respectively. Contract and lease receivables bearing annual interest rates of 4.8 to 10.0 percent are due in varying annual installments through August 2024. The face amount of long-term receivables was $7,236 as of April 30, 2016 and $10,976 as of May 2, 2015.

Note 9. Receivables

We sell our products throughout the United States and in certain foreign countries on credit terms we establish for each customer. On the sale of certain products, we have the ability to file a contractor’s lien against the product installed as collateral and to file claims against surety bonds to protect our interest in receivables. Foreign sales are at times secured by irrevocable letters of credit or bank guarantees.

Accounts receivable are reported net of an allowance for doubtful accounts of $2,797 and $2,316 at April 30, 2016 and May 2, 2015, respectively. Included in accounts receivable as of April 30, 2016 and May 2, 2015 was $437 and $385, respectively, of retainage on construction-type contracts, all of which are expected to be collected within one year.

We make estimates regarding the collectability of our accounts receivable, long-term receivables, costs and estimated earnings in excess of billings and other receivables. In evaluating the adequacy of our allowance for doubtful accounts, we analyze specific balances, customer creditworthiness, changes in customer payment cycles, and current economic trends. If the financial condition of any customer were to deteriorate, resulting in an impairment of its ability to make payments, additional allowances may be required. We charge off receivables at such time as it is determined collection will not occur. Charge-offs of receivables and our allowance for doubtful accounts related to financing receivables are not material to our financial results.

In connection with certain sales transactions, we have entered into sales contracts with installment payments exceeding six months and sales-type leases. The present value of these contracts and leases is recorded as a receivable as the revenue is recognized in accordance with U.S. GAAP, and profit is recognized to the extent the present value is in excess of cost. We generally retain a security interest in the equipment or in the cash flow generated by the equipment until the contract is paid. The present value of long-term contracts and lease receivables, including accrued interest and current maturities, was $7,038 and $9,874 as of April 30, 2016 and May 2, 2015, respectively. Contract and lease receivables bearing annual interest rates of 4.8 to 10.0 percent are due in varying annual installments through August 2024. The face amount of long-term receivables was $7,236 as of April 30, 2016 and $10,976 as of May 2, 2015.