Note 13. Percentage-of-Completion Changes in Estimates Note 13. Percentage-of-Completion Changes in Estimates (Tables)

12 Months Ended

Dec. 31, 2014

Changes in Estimates for Systems Business [Abstract]

Changes in Estimates Systems Business [Table Text Block]

The table below outlines the impact on gross profit of the aggregate net changes in systems business contract estimates (both increases and decreases) for the years ended December 31, 2014 and 2013 as well as the number of projects that comprise such aggregate net changes in estimates. For purposes of the below table, we only include projects that have a net impact on gross profit from changes in estimates of at least $1.0 million during a period. Also included in the table below is the net change in estimates as a percentage of the aggregate gross profit for such projects for each period.

	2014			2013
Number of projects	9			6
Increases in gross profit resulting from net changes in estimates (in thousands)	$	40,118		$	8,465
Net change in estimates as percentage of aggregate gross profit for associated projects	1.6		%	0.4		%