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Note 10 - Components of Accrued Liabilities (Tables)

12 Months Ended

Dec. 31, 2017

Notes Tables

Schedule of Accrued Liabilities [Table Text Block]

			December 31, 2017				December 31, 2016
Accrued payroll, commission and benefits		$	365,709			$	267,715
Accrued project management costs			47,866				41,499
Value added tax payable			25,730				24,605
Customer advances			12,926				10,432
Accrued contract costs (overbillings)			12,891				16,713
Other			50,977				38,795
		$	516,099			$	399,759

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