Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Operating Lease, Liability, Noncurrent	$ 17,010	$ 17,689
Current assets:
Cash and cash equivalents	35,059	31,422
Accounts and other receivables, net of allowance for doubtful accounts and sales returns of $3,165 in 2020 and $3,036 in 2019	106,211	107,558
Income Taxes Receivable, Current	565	4,100
Inventories	84,215	81,380
Prepaid expenses and other	8,772	8,696
Total current assets	234,822	233,156
Property, plant and equipment, at cost	801,665	810,801
Less accumulated depreciation	(568,034)	(567,911)
Net property, plant and equipment	233,631	242,890
Operating Lease, Right-of-Use Asset	18,559	19,220
Investment in kaleo	69,400	95,500
Intangible Assets, Net (Excluding Goodwill)	21,571	22,636
Goodwill	67,708	81,404
Deferred Tax Assets, Net, Noncurrent	13,218	13,129
Other assets	4,277	4,733
Total assets	663,186	712,668
Current liabilities:
Accounts payable	105,066	103,657
Accrued expenses	46,862	45,809
Operating Lease, Liability, Current	2,973	3,002
Total current liabilities	154,901	152,468
Operating Lease, Liability, Noncurrent	17,010	17,689
Long-term debt	43,000	42,000
Liability, Pension and Other Postretirement and Postemployment Benefits, Noncurrent	105,265	107,446
Deferred income taxes	0	11,019
Other noncurrent liabilities	4,420	5,297
Total liabilities	324,596	335,919
Shareholders’ equity:
Common stock, no par value (issued and outstanding - 33,510,714 shares at March 31, 2020 and 33,365,039 shares at December 31, 2019)	46,054	45,514
Common stock held in trust for savings restoration plan (75,200 shares at March 31, 2020 and 74,798 shares at December 31, 2019)	(1,601)	(1,592)
Foreign currency translation adjustment	(112,192)	(100,663)
Gain (loss) on derivative financial instruments	(5,082)	(1,307)
Pension and other post-retirement benefit adjustments	(92,750)	(95,681)
Retained earnings	504,161	530,478
Total shareholders’ equity	338,590	376,749
Total liabilities and shareholders’ equity	$ 663,186	$ 712,668

Investment in kaleo

No definition available.

Name:	tg_Investmentinkaleo
Namespace Prefix:	tg_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).