Convertible Senior Notes (Tables)

9 Months Ended

Sep. 29, 2013

Debt Disclosure [Abstract]

Summarized information about the conversions during the period

The following table summarizes information about the conversions of the 2014 Notes during the three and nine months ended September 29, 2013 (in thousands, except percentages):

	September 29, 2013
	Three Months Ended		Nine Months Ended
Cash paid for principal of notes converted	$	1,505	$	10,505
Conversion value over principal amount paid in shares of common stock	$	4,071	$	21,053
Number of shares of common stock issued upon conversion	50		315
Loss on extinguishment of debt	$	44	$	555
Effective interest rates used to measure fair value of converted notes upon conversion	0.6%		0.6% - 0.8%

Summarized information about equity and liability components of convertible senior notes

The following table summarizes information about the equity and liability components of the 2014 Notes and 2016 Notes (dollars in thousands). The fair values of the respective notes outstanding were measured based on quoted market prices.

	September 29, 2013						December 30, 2012
	2016 Notes			2014 Notes			2016 Notes			2014 Notes
Principal amount of convertible notes outstanding	$	920,000		$	29,620		$	920,000		$	40,125
Unamortized discount of liability component	(89,310		)	(810		)	(114,594		)	(3,158		)
Net carrying amount of liability component	830,690			28,810			805,406			36,967
Less: current portion	—			(28,810		)	—			(36,967		)
Long-term debt	$	830,690		$	—		$	805,406		$	—
Conversion option subject to cash settlement	—			$	810		—			$	3,158
Carrying value of equity component, net of debt issuance cost	$	155,366		$	118,948		$	155,366		$	116,600
Fair value of outstanding notes (Level 2 measurement)	$	1,050,681		$	109,692		$	892,446		$	101,470
Remaining amortization period of discount on the liability component	2.5 years			0.4 years			3.2 years			1.1 years

Coupon interest expense and debt discount accretion

Contractual coupon interest expense and accretion of discount on the liability component recorded for the convertible senior notes during the three and nine months ended September 29, 2013 and September 30, 2012, respectively, were as follows (in thousands):

	Three Months Ended				Nine Months Ended
	September 29, 2013		September 30, 2012		September 29, 2013		September 30, 2012
Contractual coupon interest expense	$	624	$	638	$	1,871	$	1,835
Accretion of discount on the liability component	$	9,063	$	8,801	$	27,095	$	26,100