Property and Equipment (Tables)

3 Months Ended

Mar. 31, 2022

Property, Plant and Equipment [Abstract]

Summary of property and equipment

	March 31,		December 31,
	2022		2021
Automobiles and trucks	$	2,312	$	2,337
Building and improvements		34,861		34,796
Construction equipment		136,589		137,786
Vessels and other equipment		81,781		82,455
Office equipment		6,527		6,430
		262,070		263,804
Less: Accumulated depreciation		(193,814)		(191,542)
Net book value of depreciable assets		68,256		72,262
Construction in progress		8,833		6,507
Land		27,885		27,885
	$	104,974	$	106,654