Concentrations of Risk	9 Months Ended
Sep. 30, 2021
Risks and Uncertainties [Abstract]
Concentration of Risk	16. Concentrations of Risk Our Paper segment has a long-standing commercial and contractual relationship with Office Depot, our largest customer in the paper business. This relationship exposes us to a significant concentration of business and financial risk. Our sales to Office Depot represent approximately 4% and 5% of our total Company sales revenue for the nine month periods ended September 30, 2021 and 2020, respectively, and approximately 48% and 43% of our Paper segment sales revenue for both of those periods, respectively. For full year 2020, sales to Office Depot represented 45% of our Paper segment sales. At September 30, 2021 and December 31, 2020, we had $47.7 million and $39.6 million of accounts receivable due from Office Depot, respectively, which represents approximately 4% and 5% of our total Company accounts receivable, respectively.

Concentrations of Risk

9 Months Ended

Sep. 30, 2021

16. Concentrations of Risk

Our Paper segment has a long-standing commercial and contractual relationship with Office Depot, our largest customer in the paper business. This relationship exposes us to a significant concentration of business and financial risk. Our sales to Office Depot represent approximately 4% and 5% of our total Company sales revenue for the nine month periods ended September 30, 2021 and 2020, respectively, and approximately 48% and 43% of our Paper segment sales revenue for both of those periods, respectively. For full year 2020, sales to Office Depot represented 45% of our Paper segment sales. At September 30, 2021 and December 31, 2020, we had $47.7 million and $39.6 million of accounts receivable due from Office Depot, respectively, which represents approximately 4% and 5% of our total Company accounts receivable, respectively.