Bank Credit Agreements and Other Short-Term and Long-Term Debt (Tables)

12 Months Ended

Dec. 31, 2018

Long Term Debt By Current And Noncurrent [Abstract]

Schedule of Debt

Long-term debt balances as of December 31, consist of the following:

	2018			2017
Notes payable to Taiwan bank, original principal amount of TWD 140 million,    fixed interest rate of 1.3%, matures June 28, 2033.	$	4,442		$	1,271
Notes payable to Yuan Ta Bank, original principal amount of TWD 113 million,    fixed interest rate of 1.7%, matures on January 29, 2019.		749			-
Term loan and revolver		210,000			268,812
Total long-term debt		215,191			270,083
Less:  Current portion		(27,613	)		(20,636	)
Less:  Unamortized debt issuance costs		(1,435	)		(1,955	)
Long-term debt, net of current portion	$	186,143		$	247,492

Schedule of Maturities of Long Term Debt

The table below sets forth the annual contractual maturities of long-term debt at December 31, 2018:

2019	$	27,385
2020		33,158
2021		150,909
2022		288
2023		292
2024 and thereafter		3,159
Total long-term debt	$	215,191