Financial Instruments and Fair Value [Line Items]

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- Definition

Foreign Currency Transaction Gain, Unrealized

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- Definition

Foreign Currency Transaction (Loss), Unrealized

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- Definition

This item represents the aggregate fair value of investments in debt and equity securities in an unrealized loss position which are categorized neither as held-to-maturity nor trading securities.

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No definition available.

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- Definition

This item represents the aggregate fair value of investments in debt and equity securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for less than twelve months.

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- Definition

Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), without single maturity date and not allocated over maturity grouping.

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- Definition

This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

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- Definition

This item represents the gross loss realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

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- Definition

For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid.

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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- Definition

Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for less than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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- Definition

Amount before tax of foreign currency transaction unrealized gain (loss) recognized in the income statement.

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Financial Instruments - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Nov. 13, 2019
Financial Instruments and Fair Value [Line Items]
Available-for-sale securities, realized gain	$ 1,300,000	$ 4,000,000.0	$ 1,100,000
Available-for-sale securities, realized loss	200,000	1,600,000	300,000
Available-for-sale marketable securities, Fair Market Value of Investments in debt securities with Unrealized Losses	23,999,000	191,978,000
Fair market value of investments with unrealized losses greater than one year		28,500,000
Aggregate loss of investments with unrealized losses greater than one year		1,600,000
Fair market value of investments with unrealized losses less than one year		163,500,000
Aggregate loss of investments with unrealized losses less than one year	23,600,000	1,400,000
Unrealized Gain (loss) on contracts	1,600,000	2,500,000	$ (2,900,000)
Equity securities unrealized gain	5,300,000	1,400,000
Equity securities unrealized loss	$ 400,000	$ 7,400,000
Accounts Receivable \| Customer 1 \| Minimum
Financial Instruments and Fair Value [Line Items]
Concentration risk, percentage	10.00%
Accounts Receivable \| Customer 2 \| Minimum
Financial Instruments and Fair Value [Line Items]
Concentration risk, percentage		10.00%
Debt Mutual Funds
Financial Instruments and Fair Value [Line Items]
Available for sale securities with out contractual maturity date	$ 6,900
Mobile Industrial Robots (MiR)
Financial Instruments and Fair Value [Line Items]
Maximum amount of contingent consideration paid for acquisition	63,200,000
Autoguide LLC [Member]
Financial Instruments and Fair Value [Line Items]
Maximum amount of contingent consideration paid for acquisition	106,900,000			$ 106,900,000
Foreign Exchange Contracts
Financial Instruments and Fair Value [Line Items]
Unrealized Gain (loss) on contracts	$ 300,000	$ 400,000