Condensed Consolidated Balance Sheets (unaudited) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 104,872	$ 77,253
Accounts receivable, net	36,415	32,050
Inventories	18,431	15,720
Prepaid expenses	1,608	2,328
Prepaid income taxes	641	1,199
Deferred income taxes	604	552
Other current assets	315	550
Total current assets	162,886	129,652
Property, plant and equipment, net	44,484	43,388
Goodwill	28,515	28,515
Intangible assets with finite lives, net	23,695	26,649
Other assets	422	420
Total assets	260,002	228,624
Current liabilities:
Trade accounts payable	7,144	9,755
Accrued expenses	12,838	9,250
Accrued compensation and other benefits	3,224	4,710
Dividends payable	0	4,311
Income taxes payable	579	0
Current portion of long-term debt	1,467	1,482
Total current liabilities	25,252	29,508
Long-term debt	2,428	3,432
Deferred income taxes	4,985	5,642
Other long-term obligations	3,340	2,575
Total liabilities	36,005	41,157
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; 28,969,931 shares issued and outstanding at September 30, 2011 and 28,752,325 shares issued and outstanding at December 31, 2010	1,931	1,917
Additional paid-in capital	45,665	38,557
Retained earnings	176,812	147,542
Accumulated other comprehensive (loss) income	(411)	(549)
Total stockholders' equity	223,997	187,467
Total liabilities and stockholders' equity	$ 260,002	$ 228,624