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Debt (Tables)

6 Months Ended

Jun. 30, 2019

The Term Loan consists of the following (in thousands):



	June 30, 2019			December 31, 2018
Principal	$	47,500		$	47,500
Less: unamortized debt discount and debt issuance costs	(1,708		)	(2,454		)
Net carrying amount	$	45,792		$	45,046

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



	Three Months Ended June 30,				Six Months Ended June 30,
	2019		2018		2019		2018
Contractual interest expense	$	1,210	$	1,173	$	2,390	$	2,267
Amortization of debt discount	333		333		666		666
Amortization of debt issuance costs	40		40		80		80
Total interest expense	$	1,583	$	1,546	$	3,136	$	3,013

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



	Three Months Ended June 30,				Six Months Ended June 30,
	2019		2018		2019		2018
Contractual interest expense	$	1,445	$	1,445	$	2,891	$	2,891
Amortization of debt discount	1,955		1,955		3,911		3,911
Amortization of debt issuance costs	115		115		229		229
Total interest expense	$	3,515	$	3,515	$	7,031	$	7,031

The Convertible Notes consist of the following (in thousands):



	June 30, 2019			December 31, 2018
Liability component:
Principal	$	105,125		$	105,125
Less: unamortized debt discount and debt issuance costs	(7,931		)	(12,071		)
Net carrying amount	$	97,194		$	93,054
Equity component	$	41,905		$	41,905