Note 9 - Major Customers (Details)	9 Months Ended			9 Months Ended			12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended			12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended			12 Months Ended	9 Months Ended	12 Months Ended	9 Months Ended			12 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Sep. 30, 2014 Customer A [Member] Sales Revenue, Net [Member] Customer Concentration Risk [Member]	Sep. 30, 2013 Customer A [Member] Sales Revenue, Net [Member] Customer Concentration Risk [Member]	Sep. 30, 2014 Customer A [Member] Costs and Estimated Earnings in Excess of Billings on Uncompleted Contracts [Member] Customer Concentration Risk [Member]	Dec. 31, 2013 Customer A [Member] Costs and Estimated Earnings in Excess of Billings on Uncompleted Contracts [Member] Customer Concentration Risk [Member]	Sep. 30, 2014 Customer A [Member] Accounts Receivable [Member] Customer Concentration Risk [Member]	Dec. 31, 2013 Customer A [Member] Accounts Receivable [Member] Customer Concentration Risk [Member]	Sep. 30, 2014 Customer B [Member] Sales Revenue, Net [Member] Customer Concentration Risk [Member]	Sep. 30, 2013 Customer B [Member] Sales Revenue, Net [Member] Customer Concentration Risk [Member]	Sep. 30, 2014 Customer B [Member] Costs and Estimated Earnings in Excess of Billings on Uncompleted Contracts [Member] Customer Concentration Risk [Member]	Dec. 31, 2013 Customer B [Member] Costs and Estimated Earnings in Excess of Billings on Uncompleted Contracts [Member] Customer Concentration Risk [Member]	Sep. 30, 2014 Customer B [Member] Accounts Receivable [Member] Customer Concentration Risk [Member]	Dec. 31, 2013 Customer B [Member] Accounts Receivable [Member] Customer Concentration Risk [Member]	Sep. 30, 2014 Customer C [Member] Sales Revenue, Net [Member] Customer Concentration Risk [Member]	Sep. 30, 2013 Customer C [Member] Sales Revenue, Net [Member] Customer Concentration Risk [Member]	Sep. 30, 2014 Customer C [Member] Costs and Estimated Earnings in Excess of Billings on Uncompleted Contracts [Member] Customer Concentration Risk [Member]	Dec. 31, 2013 Customer C [Member] Costs and Estimated Earnings in Excess of Billings on Uncompleted Contracts [Member] Customer Concentration Risk [Member]	Sep. 30, 2014 Customer C [Member] Accounts Receivable [Member] Customer Concentration Risk [Member]	Dec. 31, 2013 Customer C [Member] Accounts Receivable [Member] Customer Concentration Risk [Member]	Sep. 30, 2014 U.S. Government [Member] Sales Revenue, Net [Member] Customer Concentration Risk [Member]	Sep. 30, 2013 U.S. Government [Member] Sales Revenue, Net [Member] Customer Concentration Risk [Member]	Sep. 30, 2014 U.S. Government [Member] Costs and Estimated Earnings in Excess of Billings on Uncompleted Contracts [Member] Maximum [Member] Customer Concentration Risk [Member]	Dec. 31, 2013 U.S. Government [Member] Costs and Estimated Earnings in Excess of Billings on Uncompleted Contracts [Member] Maximum [Member] Customer Concentration Risk [Member]	Sep. 30, 2014 Customer D [Member] Costs and Estimated Earnings in Excess of Billings on Uncompleted Contracts [Member] Customer Concentration Risk [Member]	Dec. 31, 2013 Customer D [Member] Costs and Estimated Earnings in Excess of Billings on Uncompleted Contracts [Member] Customer Concentration Risk [Member]
Note 9 - Major Customers (Details) [Line Items]
Number of Large Customers Contributed to Revenue of Entity	3	3
Concentration Risk, Percentage				26.00%	27.00%	27.00%	40.00%	33.00%	28.00%	22.00%	22.00%	25.00%	17.00%	17.00%	24.00%	11.00%	18.00%	13.00%	16.00%	16.00%	20.00%	1.20%	2.00%	1.00%	1.00%	8.00%	10.00%
Number of Large Commercial Customers Accounted for Major Share in Costs and Estimated Earnings in Excess of Billings on Uncompleted Contracts	4		4
Number of Large Customers Included in Accounts Receivable of Entity	3		3