Bank Credit Agreements and Other Short-Term and Long-Term Debt - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Jul. 31, 2018
Line Of Credit Facility [Line Items]
Long-term debt	$ 98,641,000	$ 215,191,000
ERIS Technology Corporation
Line Of Credit Facility [Line Items]
Long-term debt	$ 23,500,000
Yea Shin Technology Co Ltd | ERIS Technology Corporation
Line Of Credit Facility [Line Items]
Percentage of shares acquired by subsidiary in acquiree	51.00%		51.00%
First Loan | ERIS Technology Corporation
Line Of Credit Facility [Line Items]
Long-term debt	$ 4,300,000
Long term debt maturity year	2033
Second Loan | ERIS Technology Corporation
Line Of Credit Facility [Line Items]
Long-term debt	$ 19,200,000
Long term debt maturity year	2024
U.S. Credit Facility
Line Of Credit Facility [Line Items]
Lines of credit maximum borrowing capacity	$ 250,000,000
Long-term debt	$ 75,200,000
Line of credit facility, maturity date	Oct. 26, 2021
U.S. Credit Facility | Maximum
Line Of Credit Facility [Line Items]
Line of credit facility increase in borrowing capacity	$ 200,000,000
U.S. Credit Facility | Quarter in Final Year
Line Of Credit Facility [Line Items]
Debt instrument, quarterly periodic payment	9,400,000
U.S. Credit Facility | Term Loan
Line Of Credit Facility [Line Items]
Lines of credit maximum borrowing capacity	250,000,000
U.S. Credit Facility | Term Loan | First Three Quarters
Line Of Credit Facility [Line Items]
Debt instrument, quarterly periodic payment	6,300,000
Short-Term Debt
Line Of Credit Facility [Line Items]
Lines of credit unused and available	111,800,000
Line of credit facility advanced under foreign credit line	13,300,000
Line of Credit Facility Credit Used For Guarantee	1,400,000
Short-Term Debt | Unsecured
Line Of Credit Facility [Line Items]
Lines of credit maximum borrowing capacity	$ 126,600,000