Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2019

Property, Plant and Equipment [Abstract]

Summary of property and equipment

	December 31,		December 31,
	2019		2018
Automobiles and trucks	$	2,161	$	1,709
Building and improvements		44,278		43,628
Construction equipment		153,147		161,113
Vessels and other equipment		84,022		90,217
Office equipment		8,652		8,061
		292,260		304,728
Less: Accumulated depreciation		(196,973)		(195,373)
Net book value of depreciable assets		95,287		109,355
Construction in progress		1,198		2,785
Land		35,863		35,863
	$	132,348	$	148,003