Concentration of Risk and Enterprise Wide Disclosures

12 Months Ended

Dec. 31, 2015

Concentration of Risk and Enterprise Wide Disclosures

Accounts receivable include amounts billed to governmental agencies and private customers and do not bear interest. Balances billed to customers but not paid pursuant to retainage provisions generally become payable upon contract completion and acceptance by the owner. The table below presents the concentrations of current receivables (trade and retainage) at December 31, 2015 and December 31, 2014, respectively:



	December 31, 2015				December 31, 2014
Federal Government	$	4,230	4	%	$	4,607	9	%
State Governments	1,274		1	%	476		1	%
Local Governments	19,660		18	%	13,927		26	%
Private Companies	82,627		77	%	33,778		64	%
Total receivables	$	107,791	100	%	$	52,788	100	%

At December 31, 2015, no single customer accounted for more than 10.0% of total current receivables. At December 31, 2014, a private sector customer accounted for 14.0% of total current receivables.

Additionally, the table below represents concentrations of revenue by type of customer for the years ended December 31, 2015, 2014 and 2013.



	Year ended December 31,
	2015		%		2014		%		2013		%
Federal	$	45,439	10	%	$	47,390	13	%	$	65,926	19	%
State	42,026		9	%	43,147		11	%	30,451		9	%
Local	130,187		28	%	97,145		25	%	54,702		15	%
Private	248,846		53	%	198,136		51	%	203,465		57	%
Total contract revenues	$	466,498	100	%	$	385,818	100	%	$	354,544	100	%

In the twelve months ended December 31, 2015, and December 31, 2014, no single customer exceeded 10.0% of total contract revenues. In the year ended December 31, 2013 the U.S. Army Corps of Engineers represented 11.7% of contract revenues.

The Company does not believe that the loss of any one of these customers would have a material adverse effect on the Company and its subsidiaries and affiliates since no single specific customer sustains such a large portion of receivables or contract revenue over time.

In addition, the commercial concrete construction segment primarily purchases concrete from select suppliers. The loss of one of these suppliers could adversely impact short-term operations.

Revenues generated outside the United States totaled 4.1%, 12.9% and 8.5% of total revenues for the years ended 2015, 2014 and 2013, respectively and were primarily located in the Caribbean.