Condensed Consolidated Balance Sheets (unaudited) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 43,599	$ 38,643
Accounts receivable, net of allowance for doubtful accounts of $550 and $489 at June 30, 2017 and December 31, 2016, respectively	84,791	83,252
Inventories	62,129	57,245
Prepaid expenses	4,950	4,110
Prepaid income taxes	2,817	0
Deferred income taxes	0	712
Other current assets	3,509	4,480
Total current assets	201,795	188,442
Property, plant and equipment, net	182,721	165,754
Goodwill	440,215	439,811
Intangible assets with finite lives, net	140,577	147,484
Other assets	5,371	7,135
Total assets	970,679	948,626
Current liabilities:
Trade accounts payable	24,939	32,514
Accrued expenses	18,900	14,758
Accrued compensation and other benefits	5,768	6,648
Dividends payable	19	12,088
Current portion of long-term debt	35,000	35,000
Total current liabilities	84,626	101,008
Long-term debt	209,234	226,490
Revolving loan - long-term	31,500	19,000
Deferred income taxes	77,704	74,199
Other long-term obligations	5,231	6,896
Total liabilities	408,295	427,593
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, $.0667 par value. Authorized 120,000,000 shares; 31,888,821 shares issued and outstanding at June 30, 2017 and 31,757,861 shares issued and outstanding at December 31, 2016	2,127	2,117
Additional paid-in capital	143,704	137,676
Retained earnings	420,143	388,089
Accumulated other comprehensive loss	(3,590)	(6,849)
Total stockholders' equity	562,384	521,033
Total liabilities and stockholders' equity	$ 970,679	$ 948,626