Note 4 - Revenue From Contracts With Customers (Tables)

3 Months Ended

Mar. 31, 2019

Notes Tables

Disaggregation of Revenue [Table Text Block]

	Three Months Ended
Category	March 31, 2019		March 31, 2018
Aerospace	$	212,728	$	3,873,833
Industrial		1,568,453		3,246,082
Research		834,933		861,200
Point in time		852,561		1,172,718
Net Revenue	$	3,468,675	$	9,153,833

Contract with Customer, Asset and Liability [Table Text Block]

	Three Months Ended		Three Months Ended
(In thousands)	March 31, 2019		March 31, 2018
Increase in revenue from net changes in transaction prices	$	9	$	15
(Decrease) increase in revenue from net changes in input cost estimates	$	(181)	$	894
Net (decrease) increase in revenue from net Changes in estimates	$	(172)	$	909
Number of projects		21		10
Net change in estimate as a percentage of aggregate revenue for associated projects		(.2%)		2.1%