Debt (Tables)

3 Months Ended

Mar. 31, 2019

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



	March 31, 2019			December 31, 2018
Principal	$	47,500		$	47,500
Less: unamortized debt discount and debt issuance costs	(2,081		)	(2,454		)
Net carrying amount	$	45,419		$	45,046

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



	Three Months Ended March 31,
	2019		2018
Contractual interest expense	$	1,446	$	1,446
Amortization of debt discount	1,956		1,956
Amortization of debt issuance costs	114		114
Total interest expense	$	3,516	$	3,516

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



	Three Months Ended March 31,
	2019		2018
Contractual interest expense	$	1,180	$	1,094
Amortization of debt discount	333		333
Amortization of debt issuance costs	40		40
Total interest expense	$	1,553	$	1,467

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



	March 31, 2019			December 31, 2018
Liability component:
Principal	$	105,125		$	105,125
Less: unamortized debt discount and debt issuance costs	(10,001		)	(12,071		)
Net carrying amount	$	95,124		$	93,054
Equity component	$	41,905		$	41,905