Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 40,416	$ 38,643
Accounts receivable, net of allowance for doubtful accounts of $431 and $489 at December 31, 2017 and 2016, respectively	91,226	83,252
Inventories	60,696	57,245
Prepaid expenses	4,774	4,110
Deferred income taxes	0	712
Other current assets	2,224	4,480
Total current assets	199,336	188,442
Property, plant and equipment, net	189,793	165,754
Goodwill	441,361	439,811
Intangible assets with finite lives, net	128,073	147,484
Other assets	5,073	7,135
Total assets	963,636	948,626
Current liabilities:
Trade accounts payable	28,451	32,514
Accrued expenses	22,930	14,758
Accrued compensation and other benefits	8,531	6,648
Dividends payable	13,484	12,088
Current portion of long-term debt	35,000	35,000
Total current liabilities	108,396	101,008
Long-term debt	183,964	226,490
Revolving loan - long-term	0	19,000
Deferred income taxes	48,548	74,199
Other long-term obligations	5,847	6,896
Total liabilities	346,755	427,593
Commitments and contingencies (note 12)
Stockholders' equity:
Preferred stock, $25 par value. Authorized 2,000,000 shares; none issued and outstanding	0	0
Common stock, $.0667 par value. Authorized 120,000,000 shares; 32,019,605 shares issued and outstanding at December 31, 2017 and 31,757,861 shares issued and outstanding at December 31, 2016	2,135	2,117
Additional paid-in capital	151,749	137,676
Retained earnings	464,639	388,089
Accumulated other comprehensive loss	(1,642)	(6,849)
Total stockholders' equity	616,881	521,033
Total liabilities and stockholders' equity	$ 963,636	$ 948,626