Note 1 - Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2014

Accounting Policies [Abstract]

Schedule of Other Nonoperating Income (Expense) [Table Text Block]

	Years ended December 31,
	2014		2013		2012
Royalty income from Samsung Corning Precision Materials			$	56	$	83
Foreign currency transaction and hedge gains, net	$	1,352		500		8
Loss on retirement of debt						(26)
Foreign government subsidy		3		55
Other, net		39		56		18
Total	$	1,394	$	667	$	83

Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]

	Years ended December 31,
	2014		2013		2012
Non-cash transactions:
Accruals for capital expenditures	$	358	$	185	$	240
Cash paid for interest and income taxes:
Interest (1)	$	171	$	182	$	178
Income taxes, net of refunds received	$	577	$	469	$	355

Property, Plant and Equipment, Estimated Useful Lives [Table Text Block]

Asset type	Range of useful life
Computer hardware and software	3	to	7	years
Manufacturing equipment	2	to	15	years
Furniture and fixtures	5	to	10	years
Transportation equipment	3	to	20	years