CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
CURRENT ASSETS:
Cash and cash equivalents	$ 9,918	$ 10,128
Trade receivables - net of allowances for uncollectible accounts - 2012 - $742 and 2010 - $464	47,808	40,550
Employee receivables	177	154
Other receivables	2,613	1,750
Inventories	71,002	69,911
Prepaid expenses	4,077	3,775
Prepaid income taxes	912	883
Deferred income tax assets	3,700	3,704
Income tax refund receivable	906	2,797
Total current assets	141,113	133,652
PROPERTY AND EQUIPMENT:
Land and land improvements	16,905	16,288
Buildings	79,916	59,905
Manufacturing equipment	106,401	103,629
Furniture and fixtures	24,225	22,559
Leasehold improvements	12,856	12,659
Construction-in-progress	54,649	47,534
Total property and equipment	294,952	262,574
Less accumulated depreciation	(89,630)	(83,434)
Property and equipment-net	205,322	179,140
OTHER ASSETS:
Goodwill	65,574	61,144
Deferred income tax assets	5,365	5,366
Marketable securities	920	2,798
Other assets	8,684	8,248
Total other assets	153,721	134,225
TOTAL	500,156	447,017
CURRENT LIABILITIES:
Trade payables	24,042	22,727
Other Payables	6,500	0
Accrued expenses	21,044	20,197
Advances from employees	248	225
Income taxes payable	769	646
Total current liabilities	52,603	43,795
LONG-TERM DEBT	56,620	30,737
DEFERRED INCOME TAX LIABILITIES	2,108	2,112
LIABILITIES RELATED TO UNRECOGNIZED TAX BENEFITS	3,322	3,489
DEFERRED COMPENSATION PAYABLE	5,017	4,585
DEFERRED CREDITS	1,870	1,984
OTHER LONG-TERM OBLIGATIONS	8,064	3,226
Total liabilities	129,604	89,928
STOCKHOLDERS' EQUITY:
Preferred stock-5,000 shares authorized as of June 30, 2012 and December 31, 2011; no shares issued	0	0
Common stock, no par value; 100,000 shares authorized ; 42,082 and 42,008 shares issued at June 30, 2012 and December 31, 2011, respectively	167,877	166,231
Retained earnings	202,551	190,708
Accumulated other comprehensive income	124	150
Total stockholders' equity	370,552	357,089
TOTAL	500,156	447,017
Developed Technology Rights [Member]
OTHER ASSETS:
Intangible Assets	49,614	35,415
Other Intangible Assets [Member]
OTHER ASSETS:
Intangible Assets	$ 23,564	$ 21,254