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Note 13 - Significant Customers	12 Months Ended
Dec. 31, 2014
Notes
Note 13 - Significant Customers	Note 13 - Significant Customers As of December 31, 2014, Customers C and F represented 23% and 12% of accounts receivable, respectively, and Customers C and G represented 37% and 15% of costs and estimated earnings in excess of billings, respectively. As of December 31, 2013, Customers A and B represented 11% and 30% of accounts receivable, respectively, and Customers A, C, D and E represented 16%, 16%, 14% and 10% of costs and estimated earnings in excess of billings, respectively. For the years ended December 31, 2014 and 2013, no individual customer represented 10% or more of total sales.

Note 13 - Significant Customers

12 Months Ended

Dec. 31, 2014

Note 13 - Significant Customers

As of December 31, 2014, Customers C and F represented 23% and 12% of accounts receivable, respectively, and Customers C and G represented 37% and 15% of costs and estimated earnings in excess of billings, respectively.

As of December 31, 2013, Customers A and B represented 11% and 30% of accounts receivable, respectively, and Customers A, C, D and E represented 16%, 16%, 14% and 10% of costs and estimated earnings in excess of billings, respectively.

For the years ended December 31, 2014 and 2013, no individual customer represented 10% or more of total sales.

- Definition

The entire disclosure for any concentrations existing at the date of the financial statements that make an entity vulnerable to a reasonably possible, near-term, severe impact. This disclosure informs financial statement users about the general nature of the risk associated with the concentration, and may indicate the percentage of concentration risk as of the balance sheet date.

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