Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2021

Property, Plant and Equipment [Abstract]

Summary of property and equipment

	December 31,		December 31,
	2021		2020
Automobiles and trucks	$	2,337	$	2,379
Building and improvements		34,796		44,324
Construction equipment		137,786		142,661
Vessels and other equipment		82,455		79,499
Office equipment		6,430		5,577
		263,804		274,440
Less: Accumulated depreciation		(191,542)		(186,615)
Net book value of depreciable assets		72,262		87,825
Construction in progress		6,507		1,809
Land		27,885		35,863
	$	106,654	$	125,497