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Debt (Tables)

12 Months Ended

Dec. 31, 2022

Components of Convertible Senior Notes

The below tables represent the key components of Teradyne’s convertible senior notes:


		December 31, 2022				December 31, 2021
		(in thousands)
Debt principal		$	50,228			$	116,980
Unamortized debt issuance fees (1)			113				8,554

Net carrying amount of convertible debt		$	50,115			$	108,426

Reported as follows:


		December 31, 2022				December 31, 2021
		(in thousands)
Current debt		$	50,115			$	19,182
Long-term debt			—				89,244

Net carrying amount of convertible debt		$	50,115			$	108,426


		For the Years Ended
		December 31, 2022				December 31, 2021
		(in thousands)
Contractual interest expense on the coupon		$	732			$	3,009
Amortization of the issuance fees recognized as interest expense (2)			209				11,019

Total interest expense on the convertible debt		$	941			$	14,028

(1)	Unamortized debt issuance fees as of December 31, 2021 include unamortized debt discount of $8.0 million, which was eliminated with the adoption of ASU 2020-06 on January 1, 2022.

(2)	For the year ended December 31, 2021 includes the amortization of debt discount component, which was eliminated with the adoption of ASU 2020-06 on January 1, 2022.