Debt - Senior Secured Asset-Based Revolving Credit Facility - Additional Information (Detail)	12 Months Ended
Dec. 31, 2020 USD ($)
Debt Instrument [Line Items]
Availability under credit facility	$ 8,500,000
Percentage of commitment amount available	10.00%
Number of consecutive business days for borrowing base	30 days
Asset Based Credit Agreement [Member]
Debt Instrument [Line Items]
Availability under credit facility	$ 8,500,000
Percentage of commitment amount available	10.00%
Number of consecutive business days for borrowing base	3 days
Electro Scientific Industries Inc [Member] \| Asset Based Credit Agreement [Member] \| Revolving Lines of Credit [Member]
Debt Instrument [Line Items]
Secured term loan, face amount	$ 100,000,000.0
Electro Scientific Industries Inc [Member] \| Asset Based Credit Agreement [Member] \| Secured Debt [Member]
Debt Instrument [Line Items]
Percentage of borrowing based on eligible accounts	85.00%
Percentage of borrowing based on lower of net book value of eligible inventory	20.00%
Percentage of borrowing base	30.00%
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%
Electro Scientific Industries Inc [Member] \| Asset Based Credit Agreement [Member] \| Letter of Credit [Member]
Debt Instrument [Line Items]
Borrowing capacity in the form of letters of credit	$ 25,000,000.0
Newport Corporation \| Secured Debt [Member] \| Floor Rate [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate	0.00%
Newport Corporation \| Asset Based Credit Agreement [Member] \| Revolving Lines of Credit [Member]
Debt Instrument [Line Items]
Clause to accelerate the scheduled maturities	Under the ABL Facility, we are required to prepay amounts outstanding under the ABL Facility (1) if amounts outstanding under the ABL Facility exceed the lesser of (a) the commitment amount and (b) the borrowing base, in an amount required to reduce such shortfall, (2) if amounts outstanding under the ABL Facility in any currency other than U.S. dollars exceed the sublimit for such currency, in an amount required to reduce such shortfall, and (3) during any period in which we have excess availability less than the greater of (a) 10.0% of the lesser of (x) the commitment amount and (y) the borrowing base and (b) $8.5 million for 3 consecutive business days, until the time when we have excess availability equal to or greater than the greater of (A) 10.0% of the lesser of (i) the commitment amount and (ii) the borrowing base and (B) $8.5 million for 30 consecutive days, or during the continuance of an event of default, with immediately available funds in its blocked accounts
Newport Corporation \| Asset Based Credit Agreement [Member] \| Secured Debt [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate	0.50%
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. Commencing with the completion of the first fiscal quarter ending after the closing of the ABL Facility, the applicable margin for borrowings thereunder is subject to upward or downward adjustment each fiscal quarter, based on the average historical excess availability during the preceding quarter.
Initial commitment fee percentage	0.25%
Number of consecutive business days for borrowing base	30 days
Debt instrument, collateral	All obligations under the ABL Facility are guaranteed by certain of the Company’s domestic subsidiaries and are collateralized by substantially all of the Company’s assets and the assets of such subsidiaries, subject to certain exceptions and exclusions.
Clause to maintain a Fixed Charge Coverage Ratio	From the time when the Company has excess availability less than the greater of (a) 10.0% of the lesser of (1) the commitment amount and (2) the borrowing base and (b) $8.5 until the time when the Company has excess availability equal to or greater than the greater of (a) 10.0% of the lesser of (1) the commitment amount and (2) the borrowing base and (b) $8.5 for 30 consecutive days, or during the continuance of an event of default, the ABL Credit Agreement requires the Company to maintain a Fixed Charge Coverage Ratio (as defined in the ABL Credit Agreement) tested on the last day of each fiscal quarter of at least 1.0 to 1.0.
Newport Corporation \| Asset Based Credit Agreement [Member] \| Secured Debt [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Percentage of line of credit facility excess availability commitment fee	10.00%
Line of credit facility excess availability amount	$ 8,500,000
Newport Corporation \| Asset Based Credit Agreement [Member] \| Secured Debt [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Percentage of line of credit facility excess availability commitment fee	10.00%
Line of credit facility excess availability amount	$ 8,500,000
Fixed charge coverage ratio	1.0
Newport Corporation \| Asset Based Credit Agreement [Member] \| Secured Debt [Member] \| Adjusted One Month LIBOR [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate	1.00%
Newport Corporation \| Asset Based Credit Agreement [Member] \| Secured Debt [Member] \| Floor Rate [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate	0.00%
Newport Corporation \| Asset Based Credit Agreement [Member] \| Secured Debt [Member] \| Federal Funds Rate [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate	0.50%
Newport Corporation \| Asset Based Credit Agreement [Member] \| Secured Debt [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Debt instrument, interest rate	1.50%

Fixed charge coverage ratio.

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Line of credit facility excess availability amount.

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Percentage of borrowing base.

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Percentage of borrowing based on eligible accounts receivable.

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Percentage of borrowing based on lower of cost or market value of certain eligible inventory.

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Percentage of borrowing based on lower of net book value of eligible inventory.

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Percentage of Line of credit facility excess availability commitment fee.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Discussion of whether the debt instrument is secured or unsecured, and, if secured, a description of the collateral and guarantees required or provided.

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Description of minimum financial levels (for example, tangible net worth and working capital) and achievement of certain financial ratios (for example, working capital ratio and debt service coverage ratio), and adherence to certain clauses which generally require or restrict certain actions (for example, entering into a debt arrangement with equal or greater seniority, and selling or discontinuing a certain business segment or material subsidiary) to be in compliance with the covenant clauses of the debt agreement. May also include a discussion of the adverse consequences that would result if the entity violates or fails to satisfy the covenants.

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Face (par) amount of debt instrument at time of issuance.

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Description of the interest rate as being fixed or variable, and, if variable, identification of the index or rate on which the interest rate is based and the number of points or percentage added to that index or rate to set the rate, and other pertinent information, such as frequency of rate resets.

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Description of a subjective acceleration clause that is a part of the debt instrument. A subjective acceleration clause is a provision in a debt agreement that states that the creditor may accelerate the scheduled maturities of the obligation under conditions that are not objectively determinable (for example, if the debtor fails to maintain satisfactory operations or if a material adverse change occurs).

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The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

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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.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

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