Debt (Tables)

3 Months Ended

Apr. 03, 2022

Components of Convertible Senior Notes

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

	April 3, 2022		December 31, 2021
	(in thousands)
Debt principal	$	96,285	$	116,980
Unamortized debt issuance fees (1)		410		8,554
Net carrying amount of convertible debt	$	95,875	$	108,426

Reported as follows:

	April 3, 2022		December 31, 2021
	(in thousands)
Current debt	$	20,497	$	19,182
Long-term debt		75,378		89,244
Net carrying amount of convertible debt	$	95,875	$	108,426

	For the Three Months Ended
	April 3, 2022		April 4, 2021
	(in thousands)
Contractual interest expense on the coupon	$	311	$	1,239
Amortization of debt issuance fees recognized as interest expense (2)		66		3,836
Total interest expense on the convertible debt	$	377	$	5,075

(1) Unamortized debt issuance fees as of December 31, 2021 include unamortized debt discount of $8.1 million, which was eliminated with the adoption of ASU 2020-6 on January 1, 2022.

(2) Three months ended April 4, 2021 includes the amortization of debt discount component, which was eliminated with the adoption of ASU 2020-06 on January 1, 2022.