Debt (Tables)

12 Months Ended

Dec. 31, 2013

Debt

Debt at December 31, 2013 and 2012 consisted of the following:

	2013		2012
	(in thousands)
Convertible senior notes	$	185,708	$	169,896
Japan loan		955		3,491
Total debt		186,663		173,387
Current portion of long-term debt		186,663		2,328
Long-term debt	$	—	$	171,059

Principal Payments of Debt

The debt principal payments for the next 5 years and thereafter are as follows:

Payments Due by Period	Debt Principal Payment
	(in thousands)
2014	$	190,953
2015		—
2016		—
2017		—
2018		—
Beyond 2018		—
Total	$	190,953

Components of Convertible Senior Notes

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

	December 31, 2013		December 31, 2012
	(in thousands)
Debt principal	$	189,998	$	190,000
Unamortized discount		4,290		20,104
Net carrying amount of the convertible debt	$	185,708	$	169,896

	For the year ended
	December 31, 2013		December 31, 2012
	(in thousands)
Contractual interest expense on the coupon	$	8,550	$	8,550
Amortization of the discount component and debt issue fees recognized as interest expense		16,628		14,612
Total interest expense on the convertible debt	$	25,178	$	23,162