Schedule II - Valuation and Qualifying Accounts (Tables)

12 Months Ended

Dec. 31, 2022

Notes Tables

Summary of Valuation Allowance [Table Text Block]

	Balance at beginning of period		Charged to expenses		Adjustments to valuation accounts			Deductions			Balance at end of period
Year Ended December 31, 2022
Allowance for uncollectable accounts (1)	$	8,339	$	-	$	-		$	(1,357	)	$	6,982
Allowance for deferred tax asset	$	4,067	$	-	$	(4,067	)	$	-		$	-
Year Ended December 31, 2021
Allowance for uncollectable accounts (1)	$	22,377	$	-	$	-		$	(14,038	)	$	8,339
Allowance for deferred tax asset	$	36,957	$	-	$	(32,890	)	$	-		$	4,067
Year Ended December 31, 2020
Allowance for uncollectable accounts (1)	$	-	$	22,377	$	-		$	-		$	22,377
Allowance for deferred tax asset	$	42,703	$	-	$	(5,746	)	$	-		$	36,957