Note 5 - Unearned Revenue (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

Schedule Of Unearned Revenue [Table Text Block]

December 31,	2021		2020
California	$	771,759	$	816,082
Central		1,334,901		1,482,158
Mountain		488,425		512,587
Total	$	2,595,085	$	2,810,827