Note 6 - Unearned Revenue (Tables)

6 Months Ended

Jun. 30, 2021

Notes Tables

Schedule Of Unearned Revenue [Table Text Block]

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

March 31, 2021	Transportation		Water		Specialty		Total
California	$	627,002	$	27,754	$	154,694	$	809,450
Federal		10,028		100		122,256		132,384
Heavy Civil		774,123		6,791		193,933		974,847
Midwest		135,655		—		350,063		485,718
Northwest		518,040		1,423		249,690		769,153
Water and Mineral Services		—		154,185		—		154,185
Total	$	2,064,848	$	190,253	$	1,070,636	$	3,325,737

June 30, 2020	Transportation		Water		Specialty		Total
California	$	636,385	$	61,151	$	122,989	$	820,525
Federal		16,464		861		123,169		140,494
Heavy Civil		1,188,587		34,961		233,069		1,456,617
Midwest		214,016		—		112,298		326,314
Northwest		571,068		330		89,730		661,128
Water and Mineral Services		—		130,561		—		130,561
Total	$	2,626,520	$	227,864	$	681,255	$	3,535,639