CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Revenue	$ 38.7	$ 35.7
Cost of sales	44.2	41.3
Gross profit (loss)	(5.5)	(5.6)
Advanced technology license and decommissioning costs	6.6	7.7
Selling, general and administrative	8.1	11.2
Amortization of intangible assets	1.1	1.3
Special charges for workforce reductions and advisory costs	(0.1)	0.6
Other (income)	(0.4)	(0.1)
Operating (loss)	(20.8)	(26.3)
Nonoperating components of net periodic benefit expense (income)	(0.1)	(1.6)
Interest expense	1.0	1.0
Investment income	(0.7)	(0.6)
Income (loss) before income taxes	(21.0)	(25.1)
Provision (benefit) for income taxes	(0.1)	(0.1)
Net income (loss)	(20.9)	(25.0)
Preferred stock dividends, undeclared and cumulative	2.0	2.0
Net income (loss) allocable to common stockholders	$ (22.9)	$ (27.0)
Net loss per share - basic and diluted	$ (2.40)	$ (2.97)
Weighted-average number of shares outstanding:
Average number of common shares outstanding, basic and diluted	9,532	9,103
Weighted Average Number of Shares Outstanding, Diluted	9,532	9,103
Product [Member]
Cost of sales	$ 38.3	$ 34.8
Service [Member]
Cost of sales	$ 5.9	$ 6.5