Notes and Loans Payable and Financing Arrangements	12 Months Ended
Apr. 30, 2018
Debt Disclosure [Abstract]
Notes and Loans Payable and Financing Arrangements	5. Notes and Loans Payable and Financing Arrangements Credit Facilities — On June 15, 2015, we and certain of our domestic subsidiaries entered into an unsecured credit facility, or the Credit Agreement, with TD Bank, N.A. and other lenders, or the Lenders, which included a $175.0 million revolving line of credit, or the Revolving Line, and a $105.0 million term loan, or the Term Loan, of which $87.7 million remains outstanding as of April 30, 2018. The Revolving Line provides for availability for general corporate purposes with borrowings to bear interest at a variable rate equal to LIBOR or prime plus an applicable margin based on our consolidated leverage ratio, at our election. On October 27, 2016, we entered into a second amendment to our Credit Agreement, or the Second Amendment, which, among other things, increased the Revolving Line to $350.0 million, increased the option to expand the credit commitment to $150.0 million, and extended the maturity of the Revolving Line from June 15, 2020 to October 27, 2021. Other than the changes described in the Second Amendment, we otherwise remain subject to the terms of the Credit Agreement, as described below. We incurred $525,000 of debt issuance costs related to this amendment and have recorded these costs in notes payable in the consolidated balance sheet. As of April 30, 2018, we had $25.0 million of borrowings outstanding on the Revolving Line, which bore interest at 4.15%, equal to the LIBOR rate plus an applicable margin. The Term Loan, which bears interest at a variable rate, was entered into for the purpose of redeeming the entire $100.0 million of then outstanding 5.875% Senior Notes due 2017, or the 5.875% Senior Notes. The Term Loan requires principal payments of $6.3 million per annum plus interest, payable quarterly. Any remaining outstanding amount on the maturity date of June 15, 2020 will be due in full. Concurrent with closing the Term Loan, we redeemed our then outstanding 5.875% Senior Notes for a $2.9 million call premium, which is included in interest expense, plus accrued and unpaid interest. As part of the redemption, in fiscal 2016, we wrote off $1.7 million of debt issuance costs related to the 5.875% Senior Notes. We were required to obtain interest rate protection on the Term Loan covering not less than 75% of the aggregate outstanding principal balance of the Term Loan. Accordingly, on June 18, 2015, we entered into an interest rate swap agreement, which expires on June 15, 2020, that covered 100% of the $105.0 million of floating rate debt. On July 6, 2015, we executed an interest rate swap pursuant to such agreement, which requires us to pay interest at a defined rate of 1.56% while receiving interest at a defined variable rate of one-month LIBOR (0.188% at July 31, 2015). This swap, when combined with the applicable margin based on our consolidated leverage ratio, effectively fixed our interest rate on the Term Loan, which is subject to change based on changes in our consolidated leverage ratio. As of April 30, 2018, our interest rate on the Term Loan was 4.14%. We recognize derivatives as either assets or liabilities on our consolidated balance sheets at fair value. The accounting for changes in the fair value (i.e., unrealized gains or losses) of a derivative instrument depends on whether it has been designated and qualifies as part of a hedging relationship and on the type of hedging relationship. Derivatives that do not qualify for hedge accounting must be adjusted to fair value through earnings. Our interest rate swap agreement is considered effective and qualifies as a cash flow hedge. The effective portion of the gain or loss on the derivative that is designated and qualifies as a cash flow hedge is recorded as a component of accumulated other comprehensive income or loss and reclassified into earnings in the same period or periods during which the hedged transaction affects earnings. As of April 30, 2018, the interest rate swap was considered effective and had no effect on earnings. The fair value of the interest rate swap on April 30, 2018 and 2017 was an asset of $2.1 million and $572,000, respectively, and was recorded in other assets on our consolidated balance sheet. We do not expect the interest rate swap to have any material effect on earnings within the next 12 months. 2018 Senior Notes – During fiscal 2015, we issued an aggregate of $75.0 million of 5.000% Senior Notes due 2018, or the 2018 Senior Notes, to various institutional investors pursuant to the terms and conditions of an indenture and purchase agreements. The 2018 Senior Notes bear interest at a rate of 5.000% per annum payable on January 15 and July 15 of each year, beginning on January 15, 2015. We incurred $2.3 million of debt issuance costs related to the issuance of the 2018 Senior Notes. As discussed below, the 2018 Senior Notes were redeemed on March 8, 2018 with proceeds from the issuance of 5.000% Senior Notes due 2020. As part of the redemption, in fiscal 2018, we wrote off $226,000 of debt issuance costs related to the 2018 Senior Notes. 2020 Senior Notes – On February 28, 2018, we issued an aggregate of $75.0 million of 5.000% Senior Notes due 2020, or the 2020 Senior Notes, to various institutional investors pursuant to the terms and conditions of an indenture, or the 2020 Senior Notes Indenture, and purchase agreements. The 2020 Senior Notes bear interest at a rate of 5.000% per annum payable on February 28 and August 28 of each year, beginning on August 28, 2018. We incurred 158,000 of debt issuance costs related to the issuance of the 2020 Senior Notes. At any time prior to February 28, 2019, we may, at our option, upon not less than 30 nor more than 60 days’ prior notice, redeem all or a portion of the 2020 Senior Notes at a redemption price of 102.500% of the principal amount of the 2020 Senior Notes to be redeemed plus accrued and unpaid interest as of the applicable redemption date. On or after February 28, 2019, we may, at our option, upon not less than 30 nor more than 60 days’ prior notice, redeem all or a portion of the 2020 Senior Notes at a redemption price of 100.000% of the principal amount of the 2020 Senior Notes to be redeemed plus accrued and unpaid interest as of the applicable redemption date. Subject to certain restrictions and conditions, we may be required to make an offer to repurchase the 2020 Senior Notes from the holders of the 2020 Senior Notes in connection with a change of control or disposition of assets. If not redeemed by us or repaid pursuant to the holders’ right to require repurchase, the 2020 Senior Notes mature on August 28, 2020. The 2020 Senior Notes are general, unsecured obligations of our company. The 2020 Senior Notes Indenture contains certain affirmative and negative covenants, including limitations on restricted payments (such as share repurchases, dividends, and early payment of indebtedness), limitations on indebtedness, limitations on the sale of assets, and limitations on liens. Payments that would otherwise be characterized as restricted payments are permitted under the 2020 Senior Notes Indenture in an amount not to exceed 50% of our consolidated net income for the period from the issue date to the date of the restricted payment, provided that at the time of making such payments, (a) no default has occurred or would result from the making of such payments, and (b) we are able to satisfy the debt incurrence test under the 2020 Senior Notes Indenture, or the 2020 Senior Notes Lifetime Aggregate Limit. In addition, the 2020 Senior Notes Indenture provides for other exceptions to the restricted payments covenant, each of which are independent of the 2020 Senior Notes Lifetime Aggregate Limit. Among such exceptions are (i) the ability to make share repurchases each fiscal year in an amount not to exceed the lesser of (A) $50.0 million in any fiscal year or (B) 75.0% of our consolidated net income for the previous four consecutive published fiscal quarters prior to the date of the determination of such consolidated net income, and (ii) share repurchases over the life of the 2020 Senior Notes in an aggregate amount not to exceed $75.0 million. The limitation on indebtedness in the 2020 Senior Notes Indenture is only applicable at such time that the consolidated coverage ratio (as set forth in the 2020 Senior Notes Indenture) for us and our restricted subsidiaries is less than 3.00 to 1.00. In general, as set forth in the 2020 Senior Notes Indenture, the consolidated coverage ratio is determined by comparing our prior four quarters’ consolidated EBITDA (earnings before interest, taxes, depreciation, and amortization) to our consolidated interest expense. The carrying value of our 2020 Senior Notes as of April 30, 2018 approximated the fair value in considering Level 2 inputs within the hierarchy. Debt Issuance Costs — We recorded, in notes payable, $158,000, $525,000, and $1.0 million of debt issuance costs for the fiscal years ended April 30, 2018, 2017, and 2016, respectively. These costs are being amortized to expense over the life of the credit facility or the 2020 Senior Notes Indenture. In total, we amortized $1.1 million, $918,000, and $2.7 million to interest expense for all debt issuance costs in fiscal 2018, 2017, and 2016, respectively, including write-offs related to extinguishment. The Credit Agreement for our credit facility contains financial covenants relating to maintaining maximum leverage and minimum debt service coverage. The 2020 Senior Notes Indenture contains a financial covenant relating to times interest earned. Letters of Credit — At April 30, 2018, we had outstanding letters of credit aggregating $1.0 million.

5. Notes and Loans Payable and Financing Arrangements

Credit Facilities — On June 15, 2015, we and certain of our domestic subsidiaries entered into an unsecured credit facility, or the Credit Agreement, with TD Bank, N.A. and other lenders, or the Lenders, which included a $175.0 million revolving line of credit, or the Revolving Line, and a $105.0 million term loan, or the Term Loan, of which $87.7 million remains outstanding as of April 30, 2018. The Revolving Line provides for availability for general corporate purposes with borrowings to bear interest at a variable rate equal to LIBOR or prime plus an applicable margin based on our consolidated leverage ratio, at our election. On October 27, 2016, we entered into a second amendment to our Credit Agreement, or the Second Amendment, which, among other things, increased the Revolving Line to $350.0 million, increased the option to expand the credit commitment to $150.0 million, and extended the maturity of the Revolving Line from June 15, 2020 to October 27, 2021. Other than the changes described in the Second Amendment, we otherwise remain subject to the terms of the Credit Agreement, as described below. We incurred $525,000 of debt issuance costs related to this amendment and have recorded these costs in notes payable in the consolidated balance sheet.

As of April 30, 2018, we had $25.0 million of borrowings outstanding on the Revolving Line, which bore interest at 4.15%, equal to the LIBOR rate plus an applicable margin. The Term Loan, which bears interest at a variable rate, was entered into for the purpose of redeeming the entire $100.0 million of then outstanding 5.875% Senior Notes due 2017, or the 5.875% Senior Notes. The Term Loan requires principal payments of $6.3 million per annum plus interest, payable quarterly. Any remaining outstanding amount on the maturity date of June 15, 2020 will be due in full. Concurrent with closing the Term Loan, we redeemed our then outstanding 5.875% Senior Notes for a $2.9 million call premium, which is included in interest expense, plus accrued and unpaid interest. As part of the redemption, in fiscal 2016, we wrote off $1.7 million of debt issuance costs related to the 5.875% Senior Notes.

We were required to obtain interest rate protection on the Term Loan covering not less than 75% of the aggregate outstanding principal balance of the Term Loan. Accordingly, on June 18, 2015, we entered into an interest rate swap agreement, which expires on June 15, 2020, that covered 100% of the $105.0 million of floating rate debt. On July 6, 2015, we executed an interest rate swap pursuant to such agreement, which requires us to pay interest at a defined rate of 1.56% while receiving interest at a defined variable rate of one-month LIBOR (0.188% at July 31, 2015). This swap, when combined with the applicable margin based on our consolidated leverage ratio, effectively fixed our interest rate on the Term Loan, which is subject to change based on changes in our consolidated leverage ratio. As of April 30, 2018, our interest rate on the Term Loan was 4.14%.

We recognize derivatives as either assets or liabilities on our consolidated balance sheets at fair value. The accounting for changes in the fair value (i.e., unrealized gains or losses) of a derivative instrument depends on whether it has been designated and qualifies as part of a hedging relationship and on the type of hedging relationship. Derivatives that do not qualify for hedge accounting must be adjusted to fair value through earnings. Our interest rate swap agreement is considered effective and qualifies as a cash flow hedge. The effective portion of the gain or loss on the derivative that is designated and qualifies as a cash flow hedge is recorded as a component of accumulated other comprehensive income or loss and reclassified into earnings in the same period or periods during which the hedged transaction affects earnings. As of April 30, 2018, the interest rate swap was considered effective and had no effect on earnings. The fair value of the interest rate swap on April 30, 2018 and 2017 was an asset of $2.1 million and $572,000, respectively, and was recorded in other assets on our consolidated balance sheet. We do not expect the interest rate swap to have any material effect on earnings within the next 12 months.

2018 Senior Notes – During fiscal 2015, we issued an aggregate of $75.0 million of 5.000% Senior Notes due 2018, or the 2018 Senior Notes, to various institutional investors pursuant to the terms and conditions of an indenture and purchase agreements. The 2018 Senior Notes bear interest at a rate of 5.000% per annum payable on January 15 and July 15 of each year, beginning on January 15, 2015. We incurred $2.3 million of debt issuance costs related to the issuance of the 2018 Senior Notes. As discussed below, the 2018 Senior Notes were redeemed on March 8, 2018 with proceeds from the issuance of 5.000% Senior Notes due 2020. As part of the redemption, in fiscal 2018, we wrote off $226,000 of debt issuance costs related to the 2018 Senior Notes.

2020 Senior Notes – On February 28, 2018, we issued an aggregate of $75.0 million of 5.000% Senior Notes due 2020, or the 2020 Senior Notes, to various institutional investors pursuant to the terms and conditions of an indenture, or the 2020 Senior Notes Indenture, and purchase agreements. The 2020 Senior Notes bear interest at a rate of 5.000% per annum payable on February 28 and August 28 of each year, beginning on August 28, 2018. We incurred 158,000 of debt issuance costs related to the issuance of the 2020 Senior Notes.

At any time prior to February 28, 2019, we may, at our option, upon not less than 30 nor more than 60 days’ prior notice, redeem all or a portion of the 2020 Senior Notes at a redemption price of 102.500% of the principal amount of the 2020 Senior Notes to be redeemed plus accrued and unpaid interest as of the applicable redemption date. On or after February 28, 2019, we may, at our option, upon not less than 30 nor more than 60 days’ prior notice, redeem all or a portion of the 2020 Senior Notes at a redemption price of 100.000% of the principal amount of the 2020 Senior Notes to be redeemed plus accrued and unpaid interest as of the applicable redemption date. Subject to certain restrictions and conditions, we may be required to make an offer to repurchase the 2020 Senior Notes from the holders of the 2020 Senior Notes in connection with a change of control or disposition of assets. If not redeemed by us or repaid pursuant to the holders’ right to require repurchase, the 2020 Senior Notes mature on August 28, 2020.

The 2020 Senior Notes are general, unsecured obligations of our company. The 2020 Senior Notes Indenture contains certain affirmative and negative covenants, including limitations on restricted payments (such as share repurchases, dividends, and early payment of indebtedness), limitations on indebtedness, limitations on the sale of assets, and limitations on liens. Payments that would otherwise be characterized as restricted payments are permitted under the 2020 Senior Notes Indenture in an amount not to exceed 50% of our consolidated net income for the period from the issue date to the date of the restricted payment, provided that at the time of making such payments, (a) no default has occurred or would result from the making of such payments, and (b) we are able to satisfy the debt incurrence test under the 2020 Senior Notes Indenture, or the 2020 Senior Notes Lifetime Aggregate Limit. In addition, the 2020 Senior Notes Indenture provides for other exceptions to the restricted payments covenant, each of which are independent of the 2020 Senior Notes Lifetime Aggregate Limit. Among such exceptions are (i) the ability to make share repurchases each fiscal year in an amount not to exceed the lesser of (A) $50.0 million in any fiscal year or (B) 75.0% of our consolidated net income for the previous four consecutive published fiscal quarters prior to the date of the determination of such consolidated net income, and (ii) share repurchases over the life of the 2020 Senior Notes in an aggregate amount not to exceed $75.0 million.

The limitation on indebtedness in the 2020 Senior Notes Indenture is only applicable at such time that the consolidated coverage ratio (as set forth in the 2020 Senior Notes Indenture) for us and our restricted subsidiaries is less than 3.00 to 1.00. In general, as set forth in the 2020 Senior Notes Indenture, the consolidated coverage ratio is determined by comparing our prior four quarters’ consolidated EBITDA (earnings before interest, taxes, depreciation, and amortization) to our consolidated interest expense. The carrying value of our 2020 Senior Notes as of April 30, 2018 approximated the fair value in considering Level 2 inputs within the hierarchy.

Debt Issuance Costs — We recorded, in notes payable, $158,000, $525,000, and $1.0 million of debt issuance costs for the fiscal years ended April 30, 2018, 2017, and 2016, respectively. These costs are being amortized to expense over the life of the credit facility or the 2020 Senior Notes Indenture. In total, we amortized $1.1 million, $918,000, and $2.7 million to interest expense for all debt issuance costs in fiscal 2018, 2017, and 2016, respectively, including write-offs related to extinguishment.

The Credit Agreement for our credit facility contains financial covenants relating to maintaining maximum leverage and minimum debt service coverage. The 2020 Senior Notes Indenture contains a financial covenant relating to times interest earned.

Letters of Credit — At April 30, 2018, we had outstanding letters of credit aggregating $1.0 million.