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Debt - Additional Information (Detail) - USD ($) |  |  | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Feb. 01, 2019 | Sep. 30, 2016 | Jun. 30, 2019 | Jun. 30, 2018 | Dec. 31, 2018 | Apr. 03, 2019
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, prepaid principal amount |  |  | $ 475,000,000 |  |  |
Interest expense |  |  | 21,793,000 | $ 9,352,000 |  |
Interest Rate Hedge [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest rate swap agreement, maturity date |  | Sep. 30, 2020 |  |  |  |
Interest rate swap agreement, notional amount |  |  | $ 290,000,000 |  | $ 290,000,000 |
Interest rate swap agreement, credit spread rate |  |  | 2.00% |  |  |
Revolving Lines of Credit [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Borrowing capacity in the form of letters of credit |  |  | $ 11,583,000 |  |  |
Revolving Lines of Credit [Member] | Base Rate [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Line of credit base interest rate |  |  | 1.25% |  |  |
2016 Term Loan Facility [Member] | Repricing Amendment [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Number of repricing amendments |  |  | 4 |  |  |
2016 Term Loan Facility [Member] | Repricing Amendment [Member] | LIBOR [Member] | Minimum [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, interest rate |  |  | 1.75% |  |  |
2016 Term Loan Facility [Member] | Repricing Amendment [Member] | LIBOR [Member] | Maximum [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, interest rate |  |  | 4.00% |  |  |
2016 Term Loan Facility [Member] | Repricing Amendment [Member] | LIBOR Floor Rate [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, interest rate |  |  | 0.75% |  |  |
2016 Term Loan Facility [Member] | 2019 Incremental Term Loan Facility [Member] | LIBOR [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, interest rate |  |  | 2.00% |  | 1.75% |
LIBOR floor rate |  |  | 1.00% |  | 0.75% |
2016 Term Loan Facility [Member] | 2019 Incremental Term Loan Facility [Member] | Base Rate [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, interest rate |  |  | 1.00% |  | 0.75% |
2016 Term Loan Facility [Member] | Secured Debt Repricing Amendment 2 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, interest rate |  |  | 4.40% |  |  |
Newport [Member] | Revolving Lines of Credit [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Borrowing capacity in the form of letters of credit |  |  | $ 21,312,000 |  |  |
Total borrowings outstanding |  |  | 4,431,000 |  | $ 3,389,000 |
Newport [Member] | Asset Based Credit Agreement [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt issuance cost capitalized |  |  | $ 785,000 |  |  |
Contractual term |  |  | 5 years |  |  |
Capitalized debt issuance cost |  |  | $ 216,000 |  |  |
Newport [Member] | Asset Based Credit Agreement [Member] | Secured Debt [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, interest rate terms |  |  | Borrowings under the ABL Facility bear interest at a rate per annum equal to, at the Company’s option, any of the following, plus, in each case, an applicable margin: (a) a base rate determined by reference to the highest of (1) the federal funds effective rate plus 0.50%, (2) the “prime rate” quoted in The Wall Street Journal, (3) a LIBOR rate determined by reference to the costs of funds for U.S. dollar deposits for an interest period of one month adjusted for certain additional costs, plus 1.00% and (4) a floor of 0.00%; and (b) a LIBOR rate determined by reference to the costs of funds for U.S. dollar deposits for the interest period relevant to such borrowing adjusted for certain additional costs, with a floor of 0.00%. The initial applicable margin for borrowings under the ABL Facility is 0.50% with respect to base rate borrowings and 1.50% with respect to LIBOR borrowings. |  |  |
Debt instrument, interest rate |  |  | 0.50% |  |  |
Percentage of borrowing based on eligible accounts |  |  | 85.00% |  |  |
Percentage of net book value of eligible inventory |  |  | 20.00% |  |  |
Percentage of borrowing based on lower of cost or market value of certain eligible inventory |  |  | 65.00% |  |  |
Percentage of borrowing based on net orderly liquidation value of certain eligible inventory |  |  | 85.00% |  |  |
Percentage of borrowing base |  |  | 30.00% |  |  |
Initial commitment fee percentage |  |  | 0.25% |  |  |
Newport [Member] | Asset Based Credit Agreement [Member] | Secured Debt [Member] | Federal Funds Rate [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, interest rate |  |  | 0.50% |  |  |
Newport [Member] | Asset Based Credit Agreement [Member] | Secured Debt [Member] | Adjusted One Month LIBOR [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, interest rate |  |  | 1.00% |  |  |
Period of Libor measurement |  |  | 1 month |  |  |
Newport [Member] | Asset Based Credit Agreement [Member] | Secured Debt [Member] | Interest Rate Floor [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, interest rate |  |  | 0.00% |  |  |
Newport [Member] | Asset Based Credit Agreement [Member] | Secured Debt [Member] | LIBOR [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, interest rate |  |  | 1.50% |  |  |
Newport [Member] | Asset Based Credit Agreement [Member] | Revolving Lines of Credit [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Secured term loan, face amount |  |  | $ 100,000,000 |  |  |
Newport [Member] | Asset Based Credit Agreement [Member] | Letter of Credit [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Borrowing capacity in the form of letters of credit |  |  | 25,000,000 |  |  |
Newport [Member] | 2016 Term Loan Facility [Member] | Secured Debt [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Secured term loan, face amount |  |  | $ 780,000,000 |  |  |
Debt instrument, interest rate terms |  |  | Borrowings under the Term Loan Facility​​​​​​​ bear interest per annum at one of the following rates selected by the Company: (a) a base rate determined by reference to the highest of (1) the federal funds effective rate plus 0.50%, (2) the “prime rate” quoted in The Wall Street Journal, (3) a LIBOR rate determined by reference to the costs of funds for U.S. dollar deposits for an interest period of one month adjusted for certain additional costs, plus 1.00%, and (4) a floor of 1.75%, plus, in each case, an applicable margin; or (b) a LIBOR rate determined by reference to the costs of funds for U.S. dollar deposits for the interest period relevant to such borrowing adjusted for certain additional costs, subject to a LIBOR rate floor of 0.75%, plus an applicable margin. The Company has elected the interest rate as described in clause (b). The Credit Agreement provides that, unless an alternate rate of interest is agreed, all loans will be determined by reference to the Base Rate if the LIBOR rate cannot be ascertained, if regulators impose material restrictions on the authority of a lender to make LIBOR rate loans, or for other reasons. The 2016 Term Loan Facility was issued with original issue discount of 1.00​​​​​​​% of the principal amount thereof. |  |  |
Debt instrument, issue discount percentage on principal |  |  | 1.00% |  |  |
Debt instrument, maturity date |  |  | Apr. 29, 2023 |  |  |
Newport [Member] | 2016 Term Loan Facility [Member] | Secured Debt [Member] | Federal Funds Rate [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, interest rate |  |  | 0.50% |  |  |
Newport [Member] | 2016 Term Loan Facility [Member] | Secured Debt [Member] | Adjusted One Month LIBOR [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, interest rate |  |  | 1.00% |  |  |
Period of Libor measurement |  |  | 1 month |  |  |
Newport [Member] | 2016 Term Loan Facility [Member] | Secured Debt [Member] | Floor Rate [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, interest rate |  |  | 1.75% |  |  |
Newport [Member] | 2016 Term Loan Facility [Member] | Secured Debt [Member] | LIBOR Floor Rate [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, interest rate |  |  | 0.75% |  |  |
Newport [Member] | 2016 Term Loan Facility [Member] | 2019 Incremental Term Loan Facility [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Deferred finance fees, original issue discount and re-pricing fee, gross |  |  | $ 11,362,000 |  |  |
Deferred finance fees, original issue discount and re-pricing fee, net |  |  | 10,895,000 |  |  |
Newport [Member] | 2016 Term Loan Facility [Member] | Secured Debt Repricing Amendment 2 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Secured term loan, face amount |  |  | 298,464,000 |  |  |
Newport [Member] | 2016 Term Loan Facility [Member] | Secured Debt Repricing Amendment 2 [Member] | Interest Rate Hedge [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest rate swap agreement, notional amount |  |  | $ 300,000,000 |  |  | $ 300,000,000
Interest rate swap agreement, interest rate |  |  |  |  |  | 2.309%
Interest rate swap agreement, credit spread rate |  |  | 2.25% |  |  |
Interest rate swap agreement, fair value |  |  | $ 6,688,000 |  |  |
Newport [Member] | 2016 Term Loan Facility [Member] | Secured Debt Repricing Amendment 1 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Deferred finance fees, original issue discount and re-pricing fee, gross |  |  | 28,747,000 |  |  |
Deferred finance fees, original issue discount and re-pricing fee, net |  |  | 2,648,000 |  |  |
Newport [Member] | 2016 Term Loan Facility [Member] | Secured Debt Repricing Amendment 1 [Member] | Interest Rate Hedge [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Interest rate swap agreement, notional amount |  | $ 335,000,000 | $ 300,000,000 |  |  | $ 300,000,000
Interest rate swap agreement, interest rate |  | 1.198% |  |  |  | 2.309%
Interest rate swap agreement, credit spread rate |  |  | 2.25% |  |  |
Interest rate swap agreement, fair value |  |  | $ 2,055,000 |  |  |
Newport [Member] | 2019 Incremental Term Loan Facility [Member] | Secured Debt Repricing Amendment 1 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Secured term loan, face amount |  |  | $ 648,375,000 |  |  |
Debt instrument, interest rate |  |  | 4.70% |  |  |
Debt instrument, prepaid principal amount |  |  | $ 1,625,000 |  |  |
Term loan maturity date |  |  | Feb. 01, 2026 |  |  |
Debt instrument, pre-payment premium percentage |  |  | 1.00% |  |  |
Newport [Member] | 2019 Incremental Term Loan Facility [Member] | Secured Debt Repricing Amendment 1 [Member] | Maximum [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, quarterly payment percentage |  |  | 0.25% |  |  |
Electro Scientific Industries Inc [Member] | 2019 Incremental Term Loan Facility [Member] | Definitive Merger Agreement[Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, interest rate terms | The 2019 Incremental Term Loan Facility matures on February 1, 2026 and bears interest at a rate per annum equal to, at the Company’s option, a base rate or LIBOR rate (as described above) plus, in each case, an applicable margin equal to 1.25% with respect to base rate borrowings and 2.25% with respect to LIBOR borrowings. |  |  |  |  |
Debt instrument, issue discount percentage on principal | 1.00% |  |  |  |  |
Electro Scientific Industries Inc [Member] | 2019 Incremental Term Loan Facility [Member] | Maximum [Member] | Definitive Merger Agreement[Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Business acquisition, term loan debt financing | $ 650,000,000 |  |  |  |  |
Electro Scientific Industries Inc [Member] | 2019 Incremental Term Loan Facility [Member] | LIBOR [Member] | Definitive Merger Agreement[Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, interest rate | 2.25% |  |  |  |  |
Electro Scientific Industries Inc [Member] | 2019 Incremental Term Loan Facility [Member] | Base Rate [Member] | Definitive Merger Agreement[Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, interest rate | 1.25% |  |  |  |  |
Electro Scientific Industries Inc [Member] | 2016 Term Loan Facility [Member] | Secured Debt Repricing Amendment 1 [Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Debt instrument, prepaid principal amount |  |  | $ 6,536,000 |  |  |
Electro Scientific Industries Inc [Member] | 2019 Incremental Term Loan Facility [Member] | Definitive Merger Agreement[Member] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Term loan maturity date | Feb. 01, 2026 |  |  |  |  |

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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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