Related parties are entities that the Company controls or has the ability to significantly influence. Related parties also include persons who are affiliated with related entities or the Company who are in a position to influence corporate decisions (such as owners, executives, board members and their families).  In the normal course of business, we enter into transactions with our related parties. Below is a list of related parties with whom we have had significant transactions during the comparable periods:

Our related party transactions include (i) sales and purchases of precious metals (ii) financing activities (iii) repurchase arrangements, and (iv) hedging transactions.

Below is a summary of our related party transactions. Reported transactions from the comparable prior period have been updated, as needed, to include the balances and activity according to our current list of related parties.

Balances with Related Parties

Receivables and Payables, Net

As of September 30, 2020 and June 30, 2020, the Company had related party receivables and payables balances as set forth below:

Long-term Investments

As of September 30, 2020 and June 30, 2020, the aggregate carrying balance of the equity method investments was $20.9 million and $16.8 million, respectively (see Note 9).

Secured Lines of Credit

On September 19, 2017, CFC entered into a loan agreement with Stack's Bowers Galleries providing a secured line of credit, bearing interest at a competitive rate per annum, with a maximum borrowing line (subject to temporary increases) of $5.3 million. The loan is secured by precious metals and numismatic products. As of September 30, 2020 and June 30, 2020, the outstanding principal balance of this loan was $0.8 million and $0.7 million, respectively.

On March 1, 2018, CFC entered into a loan agreement with Stack's Bowers Galleries providing a secured line of credit on the wholesale value (i.e., the excess over the spot value of the metal), of numismatic products bearing interest at a competitive rate per annum, with a maximum borrowing line (subject to temporary increases) of $10.0 million. In addition to the annual rate of interest, the Company is entitled to receive a participation interest equal to 10% of the net profits realized by Stack's Bowers Galleries on the ultimate sale of the products. As of September 30, 2020 and June 30, 2020, the outstanding principal balance of this loan was $3.4 million and $8.0 million, respectively.

Activity with Related Parties

Sales and Purchases

During the three months ended September 30, 2020 and 2019, the Company made sales and purchases to various companies, which have been deemed to be related parties, as follows:

Interest Income

During the three months ended September 30, 2020 and 2019, the Company earned interest income related to loans made to Stack's Bowers Galleries and to financing arrangements (including repurchase agreements) with affiliated companies, as set forth below:

Other Income

During the three months ended September 30, 2020 and 2019, the Company recorded its proportional share of its equity method investee's net income as other income which totaled $4.1 million and $11,000, respectively.

During the three months ended September 30, 2020 and 2019, the Company earned royalty income related to one of CFC's secured lending agreements with Stack's Bowers Galleries which totaled $359,000 and $42,000, respectively.