Debt (Tables)

6 Months Ended

Jun. 30, 2020

Debt Disclosure [Abstract]

Schedule of Long-term Debt

The following table summarizes borrowings under these facilities as of the periods presented:

Lender	Borrowing Capacity as of June 30, 2020		Borrowings as of June 30, 2020		Borrowings as of December 31, 2019
Western Alliance Bank	$	24,500	$	17,375	$	8,489
Texas Capital Bank, N.A.	24,500		17,945		10,210
Flagstar Bank	15,000		5,245		2,603
Total	$	64,000	$	40,565	$	21,302

Lender	Borrowing Capacity as of June 30, 2020		Borrowings as of June 30, 2020		Borrowings as of December 31, 2019
Goldman Sachs Bank USA	$	100,000	$	7,215	$	4,444

The following details the carrying value of the convertible senior notes as of the dates presented:

	June 30, 2020		December 31, 2019
Principal	$	143,750	$	143,750
Less: debt discount, net of amortization	(18,435)		(21,231)
Less: debt issuance costs, net of amortization	(2,430)		(2,803)
Net carrying amount of the convertible senior notes	$	122,885	$	119,716

Interest Income and Interest Expense Disclosure

The following table sets forth total interest expense recognized related to the convertible senior notes for the periods presented:

	Three Months Ended June 30,				Six Months Ended June 30,
	2020		2019		2020		2019
Amortization of debt discount	$	1,405	$	1,343	$	2,796	$	2,672
Amortization of debt issuance costs	187		180		373		359
Total amortization of debt issuance costs and accretion of equity portion	1,592		1,523		3,169		3,031
Contractual interest expense	629		629		1,258		1,258
Total interest expense related to the notes	$	2,221	$	2,152	$	4,427	$	4,289