Debt

The Company’s debt balances are detailed below:



(in thousands)	March 30, 2019			December 31, 2018
2018 Revolving Credit Facility (defined below)	$	6,000		$	6,000
2018 Term Loan Facility (defined below)	20,000			20,000
Equipment financing loan	5,000			5,000
Debt issuance costs	(553		)	(612		)
Total debt outstanding	$	30,447		$	30,388
Less: current portion of long-term debt	—			—
Long-term debt	$	30,447		$	30,388

The Company records debt issuance costs as a reduction of carrying value of the debt in the accompanying condensed balance sheets. Debt issuance costs, net of amortization, totaled $0.6 million as of March 30, 2019 and December 31, 2018. Debt issuance costs are amortized as interest expense over the term of the loan for which amortization of $58,000 and $9,000 was recorded during the three months ended March 30, 2019 and March 31, 2018, respectively.

Amended and Restated Loan and Security Agreement

In June 2018, the Company refinanced its then existing revolving credit facility and term loan facility under a loan and security agreement with Silicon Valley Bank (“SVB”) (the “Amended LSA”). The Amended LSA includes a $6.0 million revolving credit facility (the “2018 Revolving Credit Facility”) and a term loan facility (the “2018 Term Loan Facility”) comprised of (i) a $10.0 million term loan advance at closing, (ii) a conditional $5.0 million term loan advance, if no event of default has occurred and is continuing through the borrowing date, and (iii) an additional conditional term loan advance of $5.0 million if no event of default has occurred and is continuing based upon a minimum level of gross profit for the trailing 12-month period. The 2018 Term Loan Facility has a floating interest rate that is equal to 4.0% above the prime rate, with interest payable monthly and principal amortizing commencing on January 1, 2020, and will mature in June 2022. Borrowings under the 2018 Revolving Credit Facility carry a variable annual interest rate of prime rate plus 0.75% to 1.25% with an additional 5% on the outstanding balances in the event of a default. The 2018 Revolving Credit Facility matures in June 2020.

The 2018 Term Loan Facility and the 2018 Revolving Credit Facility (the “SVB Credit Facilities,”) contain customary negative covenants that limit the Company’s ability to, among other things, incur additional indebtedness, grant liens, make investments, repurchase stock, pay dividends, transfer assets and merge or consolidate. The SVB Credit Facilities are secured by a blanket lien on all of the Company’s personal property assets. The SVB Credit Facilities also contain customary affirmative covenants, including delivery of audited financial statements. The Company was in compliance with the covenants in the SVB Credit Facilities as of March 30, 2019.

As of March 30, 2019 and December 31, 2018, the Company had $6.0 million and $20.0 million in borrowings on the 2018 Revolving Credit Facility and 2018 Term Loan Facility, respectively, and had no availability to borrow under either of these loan facilities. In the three months ended March 30, 2019 and March 30, 2018, the Company incurred $0.6 million and $18,000 in interest expense related to the SVB credit facilities. The interest rates on the 2018 Revolving Credit Facility and the 2018 Term Loan Facility at March 30, 2019 were 6.25% and 9.50%, respectively.

Equipment Loan Facility

The Company had $5.0 million in borrowings outstanding as of March 30, 2019 and December 31, 2018 under the equipment loan facility. The interest rate on the equipment loan facility at March 30, 2019 and December 31, 2018 was 11.75% and 11.5%, respectively. For the three months ended March 30, 2019 and March 31, 2018, the Company recorded $0.1 million and $0, respectively, in interest expense related to the equipment loan facility.

Warrant Liabilities

In connection with its financing arrangements, the Company has issued warrants to purchase shares of its convertible preferred stock. For one of the financing arrangements, the Company issued warrants to purchase 121,694 shares of Series B convertible preferred stock at an exercise price of $1.07 per share. For a separate financing arrangement, the Company issued warrants to purchase 39,073 shares of Series E convertible preferred stock at an exercise price of $3.68 per share. In connection with the Company’s refinancing of its credit facilities with SVB, the Company issued to SVB and its affiliates warrants to purchase an aggregate of 60,002 shares of its common stock at an exercise price of $3.00 per share. The warrants remained outstanding as of March 30, 2019 and December 31, 2018. On May 6, 2019, upon the closing of the IPO, the warrants exercisable for convertible preferred stock were automatically converted into warrants exercisable for a total of 160,767 shares of common stock at the same respective exercise price per share. Subsequent to the closing of the IPO, all outstanding warrants to purchase shares of common stock were exercised. See Note 2 for further information on the warrant liabilities.