Note 6 - Unearned Revenue (Tables)

9 Months Ended

Sep. 30, 2021

Notes Tables

Schedule Of Unearned Revenue [Table Text Block]

September 30, 2021	Transportation		Water		Specialty		Total
California	$	695,445	$	35,972	$	114,178	$	845,595
Federal		40,477		65		75,827		116,369
Heavy Civil		513,590		154,005		124,026		791,621
Midwest		85,755		—		287,144		372,899
Northwest		468,397		3,731		273,622		745,750
Water and Mineral Services		—		159,958		—		159,958
Total	$	1,803,664	$	353,731	$	874,797	$	3,032,192

June 30, 2021	Transportation		Water		Specialty		Total
California	$	769,260	$	44,066	$	150,178	$	963,504
Federal		7,303		73		102,972		110,348
Heavy Civil		622,491		161,632		172,818		956,941
Midwest		107,630		—		295,447		403,077
Northwest		568,814		3,891		292,395		865,100
Water and Mineral Services		—		153,051		—		153,051
Total	$	2,075,498	$	362,713	$	1,013,810	$	3,452,021

September 30, 2020	Transportation		Water		Specialty		Total
California	$	562,988	$	52,598	$	115,748	$	731,334
Federal		13,787		494		107,273		121,554
Heavy Civil		1,060,034		24,803		224,427		1,309,264
Midwest		169,538		—		106,694		276,232
Northwest		505,559		721		50,752		557,032
Water and Mineral Services		—		118,938		—		118,938
Total	$	2,311,906	$	197,554	$	604,894	$	3,114,354