Convertible Senior Notes, Net (Tables)

12 Months Ended

Jan. 31, 2020

The following table sets forth total interest expense recognized related to the 2025 Notes (in thousands):



	Year Ended January 31, 2020
Contractual interest expense	$	519
Amortization of debt issuance costs	769
Amortization of debt discount	12,919
Total	$	14,207

he following table sets forth total interest expense recognized related to the 2023 Notes (in thousands):



	Year Ended January 31,
	2020		2019
Contractual interest expense	$	606	$	793
Amortization of debt issuance costs	985		1,085
Amortization of debt discount	11,219		13,194
Total	$	12,810	$	15,072

The 2023 Notes, net consisted of the following (in thousands):



	As of January 31, 2020
Liability component:
Principal	$	120,588
Less: unamortized debt issuance costs and debt discount	(19,885		)
Net carrying amount	$	100,703

Equity component:
2023 Notes	$	27,949
Less: issuance costs	(811		)
Carrying amount of the equity component⁽¹⁾	$	27,138

⁽¹⁾Included in the consolidated balance sheets within Additional paid-in capital.

The 2025 Notes, net consisted of the following (in thousands):



	As of January 31, 2020
Liability component:
Principal	$	1,060,000
Less: unamortized debt issuance costs and debt discount	(222,998		)
Net carrying amount	$	837,002

Equity component:
2025 Notes	$	221,387
Less: issuance costs	(4,040		)
Carrying amount of the equity component⁽¹⁾	$	217,347