Schedule II - Valuation and Qualifying Accounts and Reserves

12 Months Ended

Dec. 31, 2020

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

Schedule II - Valuation and Qualifying Accounts and Reserves

Description	Balance at beginning of year		Additions charged to expense		Deductions		Balance at end of year
Valuation allowance for deferred tax asset
2020	$	110,781	$	23,150	$	(17,388)	$	116,543
2019	$	142,496	$	5,324	$	(37,039)	$	110,781
2018	$	178,156	$	3,682	$	(39,342)	$	142,496