Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 90,013	$ 84,571
Accounts receivable, net of allowance for doubtful accounts of $930 and $2,092 at September 30, 2021 and December 31, 2020 respectively	110,711	98,214
Inventories	81,925	70,620
Prepaid expenses	9,604	6,598
Prepaid income taxes	4,115	3,447
Other current assets	3,907	3,438
Total current assets	300,275	266,888
Property, plant and equipment, net	229,798	228,096
Goodwill	525,419	529,463
Intangible assets with finite lives, net	101,283	121,660
Right of use assets	9,280	8,410
Other assets	13,294	11,326
Total assets	1,179,349	1,165,843
Current liabilities:
Trade accounts payable	37,942	23,742
Accrued expenses	44,452	29,655
Accrued compensation and other benefits	19,889	19,753
Dividends payable	200	18,941
Lease liabilities - current	2,443	2,337
Total current liabilities	104,926	94,428
Revolving loan	108,569	163,569
Deferred income taxes	51,332	51,359
Lease liabilities - non-current	6,989	6,079
Derivative liabilities	4,944	11,658
Other long-term obligations	13,511	10,517
Total liabilities	290,271	337,610
Commitments and contingencies (Note 15)
Stockholders' equity:
Preferred stock, $25 par value. Authorized 2,000,000 shares; none issued and outstanding	0	0
Common stock, $0.0667 par value. Authorized 120,000,000 shares; 32,467,909 shares issued and 32,382,637 shares outstanding at September 30, 2021 and 32,448,705 shares issued and 32,372,621 outstanding at December 31, 2020, respectively	2,165	2,164
Additional paid-in capital	172,676	173,029
Retained earnings	727,895	656,740
Accumulated other comprehensive income	(2,578)	4,173
Treasury stock, at cost: 85,272 and 76,084 shares at September 30, 2021 and December 31, 2020, respectively	(11,080)	(7,873)
Total stockholders' equity	889,078	828,233
Total liabilities and stockholders' equity	$ 1,179,349	$ 1,165,843