Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Operating Lease, Liability, Noncurrent	$ 14,424	$ 14,949
Common Stock, Shares Held in Employee Trust, Shares	105,636	105,067
Taxes Payable	$ 1,206	$ 706
Accounts and other receivables, allowance for doubtful accounts and sales returns	$ 2,806	$ 2,797
Common stock, shares issued	33,669,561	33,457,176
Common stock, shares outstanding	33,669,561	33,457,176
Disposal Group, Including Discontinued Operation, Assets, Current	$ 3,285	$ 1,339
Disposal Group, Including Discontinued Operation, Assets, Noncurrent	151	151
Disposal Group, Including Discontinued Operation, Liabilities, Current	6,438	7,521
Accounts Receivable, after Allowance for Credit Loss	87,648	86,327
Current assets:
Cash and cash equivalents	21,859	11,846
Income Taxes Receivable, Current	2,266	2,807
Inventories	70,623	66,437
Prepaid expenses and other	14,426	19,679
Total current assets	200,107	188,435
Property, plant and equipment, at cost	479,605	475,619
Less accumulated depreciation	(313,987)	(309,074)
Net property, plant and equipment	165,618	166,545
Operating Lease, Right-of-Use Asset	15,482	16,037
Investment in kaleo	35,000	34,600
Intangible Assets, Net (Excluding Goodwill)	18,012	18,820
Goodwill	67,708	67,708
Deferred Tax Assets, Net, Noncurrent	17,295	19,068
Other assets	3,131	3,506
Total assets	522,504	514,870
Current liabilities:
Accounts payable	94,477	89,702
Accrued expenses	33,411	40,741
Operating Lease, Liability, Current	2,066	2,082
Total current liabilities	137,598	140,752
Operating Lease, Liability, Noncurrent	14,424	14,949
Long-term debt	143,000	134,000
Liability, Pension and Other Postretirement and Postemployment Benefits, Noncurrent	105,998	110,585
Other non-current liabilities	5,497	5,529
Total liabilities	406,517	405,815
Shareholders’ equity:
Common Stock, Value, Issued	51,557	50,066
Common Stock Held in Trust	(2,097)	(2,087)
Foreign currency translation adjustment	(86,797)	(84,149)
Gain (loss) on derivative financial instruments	2,028	2,264
Pension and other postretirement benefit adjustments	(93,200)	(96,519)
Retained earnings	244,496	239,480
Total shareholders’ equity	115,987	109,055
Total liabilities and shareholders’ equity	$ 522,504	$ 514,870