Note 7 - Unearned Revenue (Tables)

6 Months Ended

Jun. 30, 2020

Notes Tables

Schedule Of Unearned Revenue [Table Text Block]

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

March 31, 2020
California	$	527,971	$	52,136	$	94,006	$	674,113
Federal		18,152		957		131,569		150,678
Heavy Civil		1,321,443		41,511		240,060		1,603,014
Midwest		208,872		150		140,461		349,483
Northwest		614,653		2,868		61,680		679,201
Water and Mineral Services		—		143,539		—		143,539
Total	$	2,691,091	$	241,161	$	667,776	$	3,600,028

June 30, 2019 (As Restated)
California	$	590,641	$	14,382	$	119,152	$	724,175
Federal		80		1,350		146,516		147,946
Heavy Civil		1,805,917		14,244		—		1,820,161
Midwest		204,749		110		161,353		366,212
Northwest		374,148		710		93,411		468,269
Water and Mineral Services		—		224,720		—		224,720
Total	$	2,975,535	$	255,516	$	520,432	$	3,751,483