CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
CURRENT ASSETS:
Cash and cash equivalents	$ 9,465	$ 10,128
Trade receivables — net of allowance for uncollectible accounts — 2012 — $828 and 2011 — $464	47,720	40,550
Employee receivables	235	154
Other receivables	3,034	1,750
Inventories	78,795	69,911
Prepaid expenses	4,371	3,775
Prepaid income taxes	881	883
Deferred income tax assets	3,705	3,704
Income tax refund receivable	672	2,797
Total current assets	148,878	133,652
PROPERTY AND EQUIPMENT:
Land and land improvements	16,595	16,288
Buildings	80,380	59,905
Manufacturing equipment	109,465	103,629
Furniture and fixtures	25,642	22,559
Leasehold improvements	12,949	12,659
Construction-in-progress	64,229	47,534
Total property and equipment	309,260	262,574
Less accumulated depreciation	(93,314)	(83,434)
Property and equipment-net	215,946	179,140
OTHER ASSETS:
Goodwill	65,854	61,144
Deferred income tax assets	5,365	5,366
Marketable securities	0	2,798
Other assets	10,127	8,248
Total other assets	154,362	134,225
TOTAL	519,186	447,017
CURRENT LIABILITIES:
Trade payables	27,050	22,727
Accrued expenses	24,007	20,197
Advances from employees	630	225
Income taxes payable	842	646
Total current liabilities	52,529	43,795
LONG-TERM DEBT	64,500	30,737
DEFERRED INCOME TAX LIABILITIES	2,135	2,112
LIABILITIES RELATED TO UNRECOGNIZED TAX BENEFITS	2,495	3,489
DEFERRED COMPENSATION PAYABLE	5,422	4,585
DEFERRED CREDITS	2,971	1,984
OTHER LONG-TERM OBLIGATIONS	8,101	3,226
Total liabilities	138,153	89,928
STOCKHOLDERS' EQUITY:
Preferred stock-5,000 shares authorized as of September 30, 2012 and December 31, 2011; no shares issued	0	0
Common stock, no par value; 100,000 shares authorized ; 42,424 and 42,008 shares issued at September 30, 2012 and December 31, 2011, respectively	171,440	166,231
Retained earnings	209,777	190,708
Accumulated other comprehensive income	(184)	150
Total stockholders' equity	381,033	357,089
TOTAL	519,186	447,017
Developed Technology Rights [Member]
OTHER ASSETS:
Intangible Assets	48,723	35,415
Other Intangible Assets [Member]
OTHER ASSETS:
Intangible Assets	$ 24,293	$ 21,254