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Debt - Additional Information (Detail)
 1 Months Ended 9 Months Ended
Feb. 28, 2020
USD ($)
Mar. 31, 2020
USD ($)
Day
$ / shares
shares
Apr. 30, 2020
USD ($)
Debt Instrument [Line Items]      
Debt issuance cost   $ 200,000  
Percentage of voting capital stock   65.00%  
0.50% Convertible Senior Notes due 2022 [Member]      
Debt Instrument [Line Items]      
Debt instrument aggregate principal amounts   $ 525,000,000  
Net proceeds from issuance of convertible debt   $ 514,500,000  
Interest rates on borrowings   0.50%  
Debt instrument maturity date   Jun. 15, 2022  
Conversion of notes in multiples of principal amounts   $ 1,000  
Convertible number of shares, principal amount of notes | shares   13.6947  
Initial conversion price per share of common stock | $ / shares   $ 73.02  
Note repurchase price, percentage of principal amount of notes   100.00%  
Sale price of common stock, minimum threshold percentage   130.00%  
Sale of common stock, threshold trading days | Day   20  
Sale of common stock, threshold consecutive trading days | Day   30  
Equity component of the principal amount of the convertible debt   $ 82,100,000  
Nonconvertible debt borrowing rate   4.39%  
Debt instrument term   5 years  
Debt issuance costs   $ 11,100,000  
Initial purchaser's discount   10,500,000  
Legal, accounting, and printing costs   579,000  
Convertible debt issuance costs pro rata to equity components   1,900,000  
Convertible debt issuance costs pro rata to debt components   $ 9,200,000  
Debt amortization period   5 years  
Unamortized amounts of debt issuance costs   $ 4,300,000  
Unamortized amounts of debt discount   $ 38,700,000  
Amended and Restated Credit Agreement [Member]      
Debt Instrument [Line Items]      
Line of credit facility amount borrowed     $ 100,000,000.0
Amended and Restated Credit Agreement [Member] | Revolving Credit Facility [Member]      
Debt Instrument [Line Items]      
Debt amortization period   60 months  
Maximum permitted restructuring and related cost 30.00%    
Minimum permitted restructuring and related cost 15.00%    
Maximum leverage ratio permitted 4.75% 4.75%  
Minimum leverage ratio permitted 3.50%    
Number of consecutive days under liquidity threshold 120 days    
Covenant description Pursuant to the Amendment, the Credit Agreement was amended to, among other things, (i) modify the definition of Consolidated EBITDA (as defined in the Credit Agreement) to increase the maximum limit on the add back of certain restructuring and integration cost and expenses to 30% from 15% of Consolidated EBITDA, (ii) modify the negative covenant for Consolidated Total Leverage Ratio (as defined in the Credit Agreement) at the end of any fiscal quarter to 4.75:1.00 from 3.50:1.00, and for any four quarter period following a Material Acquisition (as defined in the Credit Agreement) to 5:00:1.00 from 3.75:1.00, (iii) modify the circumstances under which the maturity date of the Credit Agreement would be accelerated in advance of the maturity date of the Notes to eliminate the acceleration of the maturity date of the Credit Agreement if we meet certain specified leverage and liquidity covenants, (iv) add a minimum liquidity covenant for each two-week period beginning on the date that is 120 days prior to the maturity date of the Company’s existing convertible senior notes, (v) add certain technical amendments to address LIBOR transition matters, and  (vi) include or revise certain definitions and certain customary representation, warranties and acknowledgments. Under the Credit Agreement, there are various restrictive covenants, including three financial covenants which limit the consolidated total leverage ratio, or leverage ratio, the consolidated interest coverage ratio, or interest coverage ratio, a restriction which places a limit on the amount of capital expenditures that may be made in any fiscal year, a restriction that permits up to $50 million per fiscal quarter of accounts receivable financings, and sets the Specified Leverage Ratio. The leverage ratio is the ratio of debt as of the measurement date to earnings before interest, taxes, depreciation and amortization, or EBITDA, for the four consecutive quarters ending with the quarter of measurement. The current leverage ratio shall not exceed 4.75 to 1.00 provided that for the four fiscal quarters ending after the date of a material acquisition, such maximum leverage ratio shall be adjusted to 5.0 to 1.00, and thereafter 4.75 to 1.0. The interest coverage ratio is EBITDA to interest expense for the four consecutive quarters ending with the quarter of measurement. The interest coverage ratio must not be less than 3.50 to 1.0 during the term of the Credit Agreement. The Specified Leverage Ratio is the ratio used in determining, among other things, whether we are permitted to make dividends and/or prepay certain indebtedness, at a fixed ratio of 2.25 to 1.00. As of the end of the fiscal quarter, we were in compliance with the restrictive covenants  
Line of credit facility amount $ 200,000,000    
Line of credit facility allowable requests for additional borrowing 100,000,000    
Outstanding principal amount   $ 0  
Maturity period   Sep. 27, 2022  
Repayment date, description   The revolving credit facility is required to be repaid in full on the earlier of (i) September 27, 2022, and (ii) the date 91 days prior to the Maturity Date of the Notes if the Notes have not been refinanced in full by such date, subject to certain exceptions based on specific covenant calculations. Debt issuance costs of $2.3 million relating to the revolving credit facility will be amortized over 60 months.  
Debt issuance cost   $ 2,300,000  
Description of base rate   The revolving credit facility bears interest at our election of a Base Rate plus an Applicable Margin or LIBOR plus an Applicable Margin. Swingline loans bear interest at a Base Rate plus an Applicable Margin. The Base Rate is a floating rate that is the greater of the Prime Rate, the Federal Funds Rate plus 50 basis points, or LIBOR plus 100 basis points. The Applicable Margin is based on a sliding scale which ranges from 0.25 to 100 basis points for Base Rate loans and 100 basis points to 175 basis points for LIBOR loans  
Maximum accounts receivable financings per quarter   $ 50,000,000  
Minimum interest coverage ratio   3.50%  
Fixed coverage ratio   2.25%  
Amended and Restated Credit Agreement [Member] | Revolving Credit Facility [Member] | Federal Funds Rates [Member]      
Debt Instrument [Line Items]      
Basis spread on variable rate   0.50%  
Amended and Restated Credit Agreement [Member] | Revolving Credit Facility [Member] | LIBOR [Member]      
Debt Instrument [Line Items]      
Basis spread on variable rate   1.00%  
Amended and Restated Credit Agreement [Member] | Revolving Credit Facility [Member] | Minimum [Member]      
Debt Instrument [Line Items]      
Commitment fee percentage of unused portion   0.175%  
Amended and Restated Credit Agreement [Member] | Revolving Credit Facility [Member] | Minimum [Member] | LIBOR [Member]      
Debt Instrument [Line Items]      
Basis spread on variable rate   1.00%  
Amended and Restated Credit Agreement [Member] | Revolving Credit Facility [Member] | Minimum [Member] | Base Rate [Member]      
Debt Instrument [Line Items]      
Basis spread on variable rate   0.0025%  
Amended and Restated Credit Agreement [Member] | Revolving Credit Facility [Member] | Maximum [Member]      
Debt Instrument [Line Items]      
Commitment fee percentage of unused portion   0.25%  
Amended and Restated Credit Agreement [Member] | Revolving Credit Facility [Member] | Maximum [Member] | LIBOR [Member]      
Debt Instrument [Line Items]      
Basis spread on variable rate   1.75%  
Amended and Restated Credit Agreement [Member] | Revolving Credit Facility [Member] | Maximum [Member] | Base Rate [Member]      
Debt Instrument [Line Items]      
Basis spread on variable rate   1.00%  
Amended and Restated Credit Agreement [Member] | Letter of Credit [Member]      
Debt Instrument [Line Items]      
Line of credit facility amount 20,000,000    
Amended and Restated Credit Agreement [Member] | Bridge Loan [Member]      
Debt Instrument [Line Items]      
Line of credit facility amount $ 20,000,000    
Amended and Restated Credit Agreement [Member] | For The First Four Fiscal Quarters Ending After Date of Material Acquisition [Member] | Revolving Credit Facility [Member]      
Debt Instrument [Line Items]      
Maximum leverage ratio permitted 5.00% 5.00%  
Minimum leverage ratio permitted 3.75%    
Amended and Restated Credit Agreement [Member] | Thereafter [Member] | Revolving Credit Facility [Member]      
Debt Instrument [Line Items]      
Maximum leverage ratio permitted   4.75%