Notes Payable (Tables)

12 Months Ended

Dec. 31, 2019

Table Text Blocks

Schedule of outstanding Convertible Note

The Company’s outstanding balances for the convertible senior notes as of December 31, 2019 and 2018 consisted of the following (in thousands):

	December 31,
	2019		2018
Liability component:
Principal:
2022 Convertible Notes	$	120,699	$	335,699
2024 Convertible Notes		200,000		—
2026 Convertible Notes		200,000		—
Less: unamortized debt discount		(104,700)		(65,094)
Less: unamortized debt issuance costs		(8,005)		(5,004)
Net carrying amount	$	407,994	$	265,601
Equity component:
2022 Convertible Notes		19,807		114,199
2024 Convertible Notes		41,152		—
2026 Convertible Notes		51,350		—
Total equity component	$	112,309	$	114,199

Schedule of interest expense related to Convertible Notes

	Year Ended
	December 31,
	2019		2018		2017
Contractual interest expense	$	7,361	$	7,553	$	7,553
Amortization of debt issuance costs		1,190		971		806
Amortization of debt discount		17,683		15,437		14,145
Total interest expense	$	26,234	$	23,961	$	22,504

Schedule of future minimum payments details of debt

2020	$	7,216
2021		7,216
2022		126,556
2023		4,500
2024		203,750
2025 and Thereafter		204,500
Total future minimum payments under the convertible senior notes		553,738
Less: amounts representing interest		(33,039)
Less: unamortized debt discount		(104,700)
Less: unamortized debt issuance costs		(8,005)
Convertible senior notes balance	$	407,994