Concentration Of Credit Risk	12 Months Ended
Dec. 31, 2020
Concentration Of Credit Risk [Abstract]
Concentration Of Credit Risk	(15) Concentration of Credit Risk The Company’s equipment leases and trade receivables subject it to potential credit risk. The Company extends credit to its customers based upon an evaluation of each customer’s financial condition and credit history. Evaluations of the financial condition and associated credit risk of customers are performed on an ongoing basis. The Company’s single largest customer accounted for 17.1%, or $69.8 million, 18.6%, or $65.9 million, and 18.2% or $58.0 million, of total billings for the years ended December 31, 2020, 2019 and 2018, respectively, and accounted for 12% and 7% of its accounts receivable as of December 31, 2020 and 2019, respectively. The Company’s second largest customer accounted for 10.2%, or $41.6 million, 11.7%, or $41.4 million, and 13.0%, or $41.3 million, of total billings for the years ended December 31, 2020, 2019 and 2018, respectively, and accounted for 11% and 13% of its accounts receivable as of December 31, 2020 and 2019, respectively.

Concentration Of Credit Risk

12 Months Ended

Dec. 31, 2020

Concentration Of Credit Risk [Abstract]

(15) Concentration of Credit Risk

The Company’s equipment leases and trade receivables subject it to potential credit risk. The Company extends credit to its customers based upon an evaluation of each customer’s financial condition and credit history. Evaluations of the financial condition and associated credit risk of customers are performed on an ongoing basis.

The Company’s single largest customer accounted for 17.1%, or $69.8 million, 18.6%, or $65.9 million, and 18.2% or $58.0 million, of total billings for the years ended December 31, 2020, 2019 and 2018, respectively, and accounted for 12% and 7% of its accounts receivable as of December 31, 2020 and 2019, respectively. The Company’s second largest customer accounted for 10.2%, or $41.6 million, 11.7%, or $41.4 million, and 13.0%, or $41.3 million, of total billings for the years ended December 31, 2020, 2019 and 2018, respectively, and accounted for 11% and 13% of its accounts receivable as of December 31, 2020 and 2019, respectively.