Contracts Receivable and Retainage (Details)	9 Months Ended
	Sep. 30, 2016 USD ($) Customer	Dec. 31, 2015 USD ($)
Long-term Contracts or Programs Disclosure [Line Items]
Contract receivable | $	$ 26,619,000	$ 47,060,000
Allowance for bad debt | $	623,425
Top 5 Customers
Long-term Contracts or Programs Disclosure [Line Items]
Contract receivable | $	$ 12,100,000
Percentage of contract receivable	45.60%
Number of major customers, contracts receivables | Customer	3
Services | Top 5 Customers
Long-term Contracts or Programs Disclosure [Line Items]
Number of oil and gas customers | Customer	2
Fabrication | Top 5 Customers
Long-term Contracts or Programs Disclosure [Line Items]
Number of oil and gas customers | Customer	1