In August 2017, the Company issued $85.0 million aggregate principal amount of its 3.75% Convertible Senior Notes due 2022 (the “3.75% Convertible Notes”) under an indenture between the Company and The Bank of New York Mellon Trust Company, N.A., as trustee. $53.0 million aggregate principal amount of the 3.75% Convertible Notes were issued to certain holders of the Company’s outstanding 3.50% Convertible Notes and 3.50% Series A Convertible Notes (together, the “Existing Notes”) in exchange for approximately $47.0 million aggregate principal amount of the Existing Notes (the “Exchange”) and $32.0 million aggregate principal amount of the 3.75% Convertible Notes were issued to certain other qualified new investors for cash. The net proceeds of the cash issuance were used to repurchase approximately $28.0 million of Existing Notes (the “Repurchase”).

Holders of the 3.75% Convertible Notes may convert their notes at any time on or after April 15, 2022 until the close of the business day immediately preceding the maturity date. Prior to April 15, 2022, holders of the 3.75% Convertible Notes may convert their notes only under certain circumstances.

Upon conversion, the Company will have the right to pay cash, or deliver shares of common stock of the Company or a combination thereof, at the Company’s election. The initial conversion rate is 174.8252 shares of the Company’s common stock per $1,000 principal amount (which represents an initial conversion price of approximately $5.72 per share of the Company’s common stock). The conversion rate, and thus the conversion price, is subject to adjustment as further described below.

Holders of the 3.75% Convertible Notes who convert their notes in connection with a “make-whole fundamental change,” as defined in the indenture, may be entitled to a make-whole premium in the form of an increase in the conversion rate. Additionally, in the event of a “fundamental change,” as defined in the indenture, holders of the 3.75% Convertible Notes may require the Company to purchase all or a portion of their note at a fundamental change repurchase price equal to 100% of the principal amount of the 3.75% Convertible Notes, plus accrued and unpaid interest, if any, to, but not including, the fundamental change repurchase date. As of June 30, 2020, $85.0 million aggregate principal amount was outstanding.

On June 14, 2017, the Company entered into a credit and security agreement with a lender (the “Credit Agreement”). The Credit Agreement provides the Company with a revolving credit facility in the initial amount of $52.0 million (the “Revolving Credit Facility”). Availability for borrowings under the Revolving Credit Facility is subject to a borrowing base that is calculated as a function of the value of the Company’s eligible accounts receivable and eligible inventory, and the Company is required to maintain a minimum drawn balance of at least 30% of such availability. Interest on the borrowings under the Revolving Credit Facility is payable monthly in arrears at an annual interest rate of reserve-adjusted, 90-day LIBOR plus 4.50% and had initial maturity date of June 14, 2021.

In December 2017, concurrently with the Term Loan Agreement (as defined below), the Company entered into an amendment to the Credit Agreement (the “Amendment” and, collectively with the Credit Agreement, the “Amended Credit Agreement”). The Amendment reduced the maximum borrowings under the Revolving Credit Facility to $32.0 million and extended the maturity date of the Revolving Credit Facility to December 15, 2022.

In May 2019, the Company amended the Amended Credit Agreement to, among other things, decrease the interest rate from 90-day LIBOR plus 4.50% to 90-day LIBOR plus 3.50% and extend the maturity date to May 30, 2024 and update the calculation of the deferred revolving loan origination fee such that it is based on the amount of time elapsed from the effective date of the May 2019 amendment. The Company accounted for the amendment as a modification of existing debt and deferred an insignificant amount of offering costs on the consolidated balance sheet as of June 30, 2019. The Amended Credit Agreement was further amended in August 2019 to, among other things, revise or add financial covenants, including the fixed charge coverage ratio, minimum net revenue, minimum consolidated cash balance and minimum consolidated domestic cash balance tests. Other significant terms remain unchanged. The Company accounted for the amendment as a modification of existing debt and deferred an insignificant amount of offering costs on the consolidated balance sheet.

As of June 30, 2020, approximately $28.0 million of aggregate principal amount was outstanding under the Revolving Credit Facility, and $0.9 million of unamortized debt costs associated with the Revolving Credit Facility was included in other assets on the condensed consolidated balance sheet.

In December 2017, the Company entered into a credit and security agreement with a lender (the “Term Loan Agreement”). The Term Loan Agreement provides for an initial term loan of $40.0 million with an additional tranche of $20.0 million undrawn and available through December 31, 2018, if specified conditions are met (the “Term Loan”). In connection with the Amendment, the Company used a portion of the net proceeds from the initial advance to repay a portion of the outstanding borrowings under the Revolving Credit Facility. Interest on the Term Loan is payable monthly in arrears at an annual interest rate of 6.75% plus 90-day LIBOR. The Term Loan Agreement matures December 15, 2022 and, if prepaid, has fees equal to 3%, 2%, and 1% of the prepayment amount if such termination occurs within the first year, the second year, and the third year of funding, respectively. The term of the loan is 60 months with interest only for the first 24 months followed by straight-line amortization of principal for the remaining months. In addition, the Company will pay an annual administrative fee of 0.25% and a final payment of 4.0% of the Term Loan amount.

In December 2018, the Company drew an additional $5.0 million under the Term Loan Agreement and in connection therewith entered into the second amendment to the Term Loan Agreement (“Amendment 2”) which, among other things, (i) extended the term loan tranche 2 commitment termination date for the remaining $15.0 million unfunded commitment from December 31, 2018 to June 30, 2019; (ii) provided that term loan tranche 2 may be drawn in two separate advances; and (iii) updated the calculation of the prepayment fee such that it is based on the amount of time elapsed from the effective date of Amendment 2.

In May 2019, the Company amended the Term Loan Agreement to, among other things, increase the loan tranche 2 commitment by $0.5 million, extend the maturity date to May 30, 2024, decrease the annual interest rate from 6.75% plus 90-day LIBOR to 5.50% plus 90-day LIBOR, and modify the calculation prepayment fee such that it is based on the amount of time elapsed from the effective date of the May 2019 amendment. The Company accounted

for the amendment as a modification of existing debt and recorded approximately $1.5 million of debt discount costs associated with the amendment against long-term debt on the consolidated balance sheets as of June 30, 2019.

In August 2019, the Company amended the Term Loan Agreement to, among other things, increase the loan commitment by $25 million in the form of a new tranche (“Tranche 3”), increase the annual interest rate from 5.50% plus 90-day LIBOR to 6.75% plus 90-day LIBOR, and revise or add financial covenants, including the fixed charge coverage ratio, minimum net revenue, minimum consolidated cash balance and minimum consolidated domestic cash balance tests. Other significant terms remain unchanged. The Company borrowed in full Tranche 3, or $25 million, on the date of the amendment. The Company accounted for the amendment as a modification of existing debt, at the same time, the Company recorded approximately $1.6 million of debt discount costs associated with the amendment against long-term debt.

As of June 30, 2020, approximately $89.1 million aggregate principal amount was outstanding.

The following table presents the carrying value of all Credit Facilities and 3.75% Convertible Notes (in thousands):

	Revolving Credit Facility (1)		3.75% Convertible Notes			Term Loan Facility			Total
Carrying amount of equity conversion component	$	—	$	14,650		$	—		$	14,650
Principal amount	$	28,001	$	85,000		$	89,093		$	202,094
Unamortized debt costs		—		(1,922	)		(874	)		(2,796	)
Unamortized debt discount		—		(6,680	)		(3,311	)		(9,991	)
Net carrying amount	$	28,001	$	76,398		$	84,908		$	189,307

A summary of interest expense on the Credit Facilities and Notes is as follows (in thousands):

	Year ended June 30,
	2020		2019		2018
Interest expense related to contractual interest coupon	$	12,373	$	10,185	$	9,953
Interest expense related to amortization of debt discount		4,168		3,370		3,377
Interest expense related to amortization of debt issuance costs		1,350		1,529		1,629
Total	$	17,891	$	15,084	$	14,959