Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, stock options, restricted stock or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

No definition available.

Consolidated Statements Of Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Retained Earnings	Trust For Savings Restoration Plan	Foreign Currency Translation	Gain (Loss) On Derivative Financial Instruments	Pension and other post-retirement benefit adjustments	Corporation [Member]	Corporation [Member] Common Stock [Member]
Balance at Dec. 31, 2016	$ 310,783	$ 32,007	$ 463,507	$ (1,497)	$ (93,970)	$ 863	$ (90,127)
Balance, shares at Dec. 31, 2016		32,933,807
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	38,251		38,251
Foreign currency translation adjustment	7,792				7,792
Derivative financial instruments adjustment	(404)					(404)
Net actuarial gains (losses) and prior service costs	(8,634)						(8,634)
Amortization of prior service costs and net gains or losses	7,811						7,811
Cash dividends declared	(14,532)		(14,532)
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures		49,475
Share Based Compensation Expense, Value		$ 2,018
Issued upon exercise of stock options & other	$ (124)	$ 819						$ (124)	$ 819
Issued upon exercise of stock options (including related income tax benefits) & other, shares	(7,125)	41,265
Cumulative effect adjustment for adoption of stock-based compensation accounting guidance	$ 0	$ 27							(27)
Shares received from the sale of Falling Springs, LLC, shares		0
Tredegar common stock purchased by trust for savings restoration plan	0		31	(31)
Balance at Dec. 31, 2017	343,780	$ 34,747	487,230	(1,528)	(86,178)	459	(90,950)
Balance, shares at Dec. 31, 2017		33,017,422
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	24,842		24,842
Foreign currency translation adjustment	(10,762)				(10,762)
Derivative financial instruments adjustment	(2,060)					(2,060)
Net actuarial gains (losses) and prior service costs	(1,118)						(1,118)
Amortization of prior service costs and net gains or losses	10,622						10,622
Cash dividends declared	(14,592)		(14,592)
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures		102,762
Share Based Compensation Expense, Value	3,141	$ 3,141
Issued upon exercise of stock options & other	$ (328)	$ 1,332						(328)	1,332
Issued upon exercise of stock options (including related income tax benefits) & other, shares	(17,558)	73,398
Tredegar common stock purchased by trust for savings restoration plan	$ 0		31	(31)
Balance at Dec. 31, 2018	354,857	$ 38,892	497,511	(1,559)	(96,940)	(1,601)	(81,446)
Balance, shares at Dec. 31, 2018		33,176,024
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	48,259		48,259
Foreign currency translation adjustment	(3,723)				(3,723)
Derivative financial instruments adjustment	294					294
Net actuarial gains (losses) and prior service costs	(22,508)						(22,508)
Amortization of prior service costs and net gains or losses	8,273						8,273
Cash dividends declared	(15,325)		(15,325)
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures		228,959
Share Based Compensation Expense, Value	7,292	$ 7,292
Issued upon exercise of stock options & other	$ (854)	$ 184						$ (854)	$ 184
Issued upon exercise of stock options (including related income tax benefits) & other, shares	(49,444)	9,500
Tredegar common stock purchased by trust for savings restoration plan	$ 0		33	(33)
Balance at Dec. 31, 2019	$ 376,749	$ 45,514	$ 530,478	$ (1,592)	$ (100,663)	$ (1,307)	$ (95,681)
Balance, shares at Dec. 31, 2019		33,365,039