Condensed Consolidated Balance Sheets (unaudited) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 42,679	$ 40,416
Accounts receivable, net of allowance for doubtful accounts of $362 and $431 at March 31, 2018 and December 31, 2017, respectively	96,001	91,226
Inventories	66,270	60,696
Prepaid expenses	3,958	4,774
Assets held for sale	677	0
Other current assets	2,223	2,224
Total current assets	211,808	199,336
Property, plant and equipment, net	187,935	189,793
Goodwill	441,361	441,361
Intangible assets with finite lives, net	121,945	128,073
Other assets	4,940	5,073
Total assets	967,989	963,636
Current liabilities:
Trade accounts payable	26,674	28,451
Accrued expenses	23,390	22,930
Accrued compensation and other benefits	7,876	8,531
Customer deposits	38	0
Dividends payable	45	13,484
Income taxes payable	5,092	0
Current portion of long-term debt	35,000	35,000
Total current liabilities	98,115	108,396
Long-term debt	175,323	183,964
Deferred income taxes	48,534	48,548
Other long-term obligations	6,127	5,847
Total liabilities	328,099	346,755
Commitments and contingencies (note 16)
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; 32,100,110 shares issued and outstanding at March 31, 2018 and 32,019,605 shares issued and outstanding at December 31, 2017	2,140	2,135
Additional paid-in capital	154,030	151,749
Retained earnings	483,986	464,639
Accumulated other comprehensive loss	(266)	(1,642)
Total stockholders' equity	639,890	616,881
Total liabilities and stockholders' equity	$ 967,989	$ 963,636