Credit Facility	3 Months Ended
Oct. 31, 2019
Line of Credit Facility [Abstract]
Credit Facility	Credit Facility On October 31, 2018, we entered into a First Amended and Restated Credit Agreement (the "Credit Facility") with a syndicate of lenders, replacing our prior Credit Agreement dated as of February 23, 2016 (as amended by that certain First Amendment, dated as of June 6, 2017 (the "Prior Credit Facility")). In connection with the establishment of our new Credit Facility, during the three months ended October 31, 2018, we wrote-off $3,217,000 of deferred financing costs primarily related to the Term Loan Facility portion of our Prior Credit Facility and capitalized deferred financing costs of $1,813,000 related to the new Credit Facility. The Credit Facility provides a senior secured loan facility of up to $550,000,000 consisting of: (i) a revolving loan facility ("Revolving Loan Facility") with a borrowing limit of $300,000,000; (ii) an accordion feature allowing us to borrow up to an additional $250,000,000; (iii) a $35,000,000 letter of credit sublimit; and (iv) a swingline loan credit sublimit of $25,000,000. The Credit Facility matures on October 31, 2023 (the "Revolving Maturity Date"). If we issue new unsecured debt in excess of $5,000,000 with a maturity date that is less than 91 days from October 31, 2023, the Revolving Maturity Date would automatically accelerate so that it would be 91 days earlier than the maturity date of the new unsecured debt. The proceeds of the Credit Facility were used, in part, to repay in full the outstanding borrowings under the Prior Credit Facility, and additional proceeds of the Credit Facility are expected to be used by us for working capital and other general corporate purposes. As of October 31, 2019, the amount outstanding under our Credit Facility was $169,000,000, which is reflected in the non-current portion of long-term debt on our Condensed Consolidated Balance Sheet. At October 31, 2019, we had $2,632,000 of standby letters of credit outstanding under our Credit Facility related to guarantees of future performance on certain customer contracts and no outstanding commercial letters of credit. During the three months ended October 31, 2019, we had outstanding balances under the Credit Facility ranging from $142,000,000 to $169,000,000. As of October 31, 2019, total net deferred financing costs related to the Credit Facility were $2,943,000 and are being amortized over the term of our Credit Facility through October 31, 2023. Interest expense related to our credit facilities, including amortization of deferred financing costs, recorded during the three months ended October 31, 2019 and 2018, was $1,753,000 and $2,542,000, respectively. The amount for the three months ended October 31, 2019 relates to our new Credit Facility; whereas, the amount for the three months ended October 31, 2018 relates to our Prior Credit Facility. During the three months ended October 31, 2019 and 2018, our blended interest rate approximated 4.70% and 6.00%, respectively. Borrowings under the Credit Facility shall be either: (i) Alternate Base Rate borrowings, which bear interest from the applicable borrowing date at a rate per annum equal to (x) the greatest of (a) the Prime Rate (as defined) in effect on such day, (b) the Federal Funds Effective Rate (as defined) in effect on such day plus 1/2 of 1.00% per annum and (c) the Adjusted LIBO Rate (as defined) on such day (or, if such day is not a business day, the immediately preceding business day) plus 1.00% per annum, plus (y) the Applicable Rate (as defined), or (ii) Eurodollar borrowings, which bear interest from the applicable borrowing date at a rate per annum equal to (x) the Adjusted LIBO Rate for such interest period plus (y) the Applicable Rate. Determination of the Applicable Rate is based on a pricing grid that is dependent upon our Secured Leverage Ratio (as defined) as of the end of each fiscal quarter for which consolidated financial statements have been most recently delivered. The Credit Facility contains customary representations, warranties and affirmative covenants. The Credit Facility also contains customary negative covenants, subject to negotiated exceptions, including but not limited to: (i) liens, (ii) investments, (iii) indebtedness, (iv) significant corporate changes, including mergers and acquisitions, (v) dispositions, (vi) restricted payments, including stockholder dividends, and (vii) certain other restrictive agreements. The Credit Facility also contains certain financial covenants and customary events of default (subject to grace periods, as appropriate), such as payment defaults, cross-defaults to other material indebtedness, bankruptcy and insolvency, the occurrence of a defined change in control and the failure to observe the negative covenants and other covenants related to the operation of our business. In addition, under certain circumstances, we may be required to enter into amendments to the Credit Facility in connection with any further syndication of the Credit Facility. The Credit Facility provides for, among other things: (i) no scheduled payments of principal until maturity; (ii) a maximum Secured Leverage Ratio of 3.75x trailing twelve months ("TTM") Adjusted Earnings Before Interest, Taxes, Depreciation and Amortization ("Adjusted EBITDA") and a Maximum Total Leverage Ratio of 4.50x TTM Adjusted EBITDA, each with no step downs; and (iii) a Minimum Interest Expense Coverage Ratio of 3.25x TTM Adjusted EBITDA. As of October 31, 2019, our Secured Leverage Ratio was 1.75x TTM Adjusted EBITDA compared to the maximum allowable Secured Leverage Ratio of 3.75x TTM Adjusted EBITDA. Our Interest Expense Coverage Ratio as of October 31, 2019 was 13.07x TTM Adjusted EBITDA compared to the Minimum Interest Expense Coverage Ratio of 3.25x TTM Adjusted EBITDA. Given our expected future business performance, we anticipate maintaining compliance with the terms and financial covenants in our Credit Facility for the foreseeable future. The obligations under the Credit Facility are guaranteed by certain of our domestic subsidiaries (the "Guarantors"). As collateral security under the Credit Facility and the guarantees thereof, we and the Guarantors have granted to the administrative agent, for the benefit of the lenders, a lien on, and first priority security interest in, substantially all of our tangible and intangible assets. On December 6, 2018, we entered into the first amendment to the Credit Facility. The purpose of the amendment is to provide for a mechanism to replace the LIBO Rate for Eurodollar borrowings with an alternative benchmark interest rate, should the LIBO Rate generally become unavailable in the future on an other-than-temporary basis. Capitalized terms used but not defined herein have the meanings set forth for such terms in the Credit Facility and the Prior Credit Facility, which have been documented and filed with the SEC.

Credit Facility

On October 31, 2018, we entered into a First Amended and Restated Credit Agreement (the "Credit Facility") with a syndicate of lenders, replacing our prior Credit Agreement dated as of February 23, 2016 (as amended by that certain First Amendment, dated as of June 6, 2017 (the "Prior Credit Facility")). In connection with the establishment of our new Credit Facility, during the three months ended October 31, 2018, we wrote-off $3,217,000 of deferred financing costs primarily related to the Term Loan Facility portion of our Prior Credit Facility and capitalized deferred financing costs of $1,813,000 related to the new Credit Facility.

The Credit Facility provides a senior secured loan facility of up to $550,000,000 consisting of: (i) a revolving loan facility ("Revolving Loan Facility") with a borrowing limit of $300,000,000; (ii) an accordion feature allowing us to borrow up to an additional $250,000,000; (iii) a $35,000,000 letter of credit sublimit; and (iv) a swingline loan credit sublimit of $25,000,000.

The Credit Facility matures on October 31, 2023 (the "Revolving Maturity Date"). If we issue new unsecured debt in excess of $5,000,000 with a maturity date that is less than 91 days from October 31, 2023, the Revolving Maturity Date would automatically accelerate so that it would be 91 days earlier than the maturity date of the new unsecured debt.

The proceeds of the Credit Facility were used, in part, to repay in full the outstanding borrowings under the Prior Credit Facility, and additional proceeds of the Credit Facility are expected to be used by us for working capital and other general corporate purposes. As of October 31, 2019, the amount outstanding under our Credit Facility was $169,000,000, which is reflected in the non-current portion of long-term debt on our Condensed Consolidated Balance Sheet. At October 31, 2019, we had $2,632,000 of standby letters of credit outstanding under our Credit Facility related to guarantees of future performance on certain customer contracts and no outstanding commercial letters of credit. During the three months ended October 31, 2019, we had outstanding balances under the Credit Facility ranging from $142,000,000 to $169,000,000.

As of October 31, 2019, total net deferred financing costs related to the Credit Facility were $2,943,000 and are being amortized over the term of our Credit Facility through October 31, 2023.

Interest expense related to our credit facilities, including amortization of deferred financing costs, recorded during the three months ended October 31, 2019 and 2018, was $1,753,000 and $2,542,000, respectively. The amount for the three months ended October 31, 2019 relates to our new Credit Facility; whereas, the amount for the three months ended October 31, 2018 relates to our Prior Credit Facility. During the three months ended October 31, 2019 and 2018, our blended interest rate approximated 4.70% and 6.00%, respectively.

Borrowings under the Credit Facility shall be either: (i) Alternate Base Rate borrowings, which bear interest from the applicable borrowing date at a rate per annum equal to (x) the greatest of (a) the Prime Rate (as defined) in effect on such day, (b) the Federal Funds Effective Rate (as defined) in effect on such day plus 1/2 of 1.00% per annum and (c) the Adjusted LIBO Rate (as defined) on such day (or, if such day is not a business day, the immediately preceding business day) plus 1.00% per annum, plus (y) the Applicable Rate (as defined), or (ii) Eurodollar borrowings, which bear interest from the applicable borrowing date at a rate per annum equal to (x) the Adjusted LIBO Rate for such interest period plus (y) the Applicable Rate. Determination of the Applicable Rate is based on a pricing grid that is dependent upon our Secured Leverage Ratio (as defined) as of the end of each fiscal quarter for which consolidated financial statements have been most recently delivered.

The Credit Facility contains customary representations, warranties and affirmative covenants. The Credit Facility also contains customary negative covenants, subject to negotiated exceptions, including but not limited to: (i) liens, (ii) investments, (iii) indebtedness, (iv) significant corporate changes, including mergers and acquisitions, (v) dispositions, (vi) restricted payments, including stockholder dividends, and (vii) certain other restrictive agreements. The Credit Facility also contains certain financial covenants and customary events of default (subject to grace periods, as appropriate), such as payment defaults, cross-defaults to other material indebtedness, bankruptcy and insolvency, the occurrence of a defined change in control and the failure to observe the negative covenants and other covenants related to the operation of our business. In addition, under certain circumstances, we may be required to enter into amendments to the Credit Facility in connection with any further syndication of the Credit Facility.

The Credit Facility provides for, among other things: (i) no scheduled payments of principal until maturity; (ii) a maximum Secured Leverage Ratio of 3.75x trailing twelve months ("TTM") Adjusted Earnings Before Interest, Taxes, Depreciation and Amortization ("Adjusted EBITDA") and a Maximum Total Leverage Ratio of 4.50x TTM Adjusted EBITDA, each with no step downs; and (iii) a Minimum Interest Expense Coverage Ratio of 3.25x TTM Adjusted EBITDA.

As of October 31, 2019, our Secured Leverage Ratio was 1.75x TTM Adjusted EBITDA compared to the maximum allowable Secured Leverage Ratio of 3.75x TTM Adjusted EBITDA. Our Interest Expense Coverage Ratio as of October 31, 2019 was 13.07x TTM Adjusted EBITDA compared to the Minimum Interest Expense Coverage Ratio of 3.25x TTM Adjusted EBITDA. Given our expected future business performance, we anticipate maintaining compliance with the terms and financial covenants in our Credit Facility for the foreseeable future.

The obligations under the Credit Facility are guaranteed by certain of our domestic subsidiaries (the "Guarantors"). As collateral security under the Credit Facility and the guarantees thereof, we and the Guarantors have granted to the administrative agent, for the benefit of the lenders, a lien on, and first priority security interest in, substantially all of our tangible and intangible assets.

On December 6, 2018, we entered into the first amendment to the Credit Facility. The purpose of the amendment is to provide for a mechanism to replace the LIBO Rate for Eurodollar borrowings with an alternative benchmark interest rate, should the LIBO Rate generally become unavailable in the future on an other-than-temporary basis.

Capitalized terms used but not defined herein have the meanings set forth for such terms in the Credit Facility and the Prior Credit Facility, which have been documented and filed with the SEC.