Schedule II - Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2022

SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]

Schedule II - Valuation and Qualifying Account

Schedule II—Valuation and Qualifying Account

Description	Balance at beginning of period		Additions charged to cost and expenses		Deductions		Balance at end of period
Accounts receivable reserve:
Year ended:
December 31, 2022	$	741,806	$	395,339	$	198,084	$	939,061
December 31, 2021	996,860		168,360		423,414		741,806
December 31, 2020	974,882		880,967		858,989		996,860

All other schedules are omitted because they are not applicable or are not required, or because the required information is included in the consolidated financial statements or notes thereto.