CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 18,074,000	$ 8,250,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	14,250,000	10,565,000
Losses on sales and/or abandonment of property and equipment	3,000	449,000
Acquired in-process research and development	3,438,000	0
Write-off of certain patents and trademarks	59,000	108,000
Impairment of goodwill	0	8,344,000
Amortization of deferred credits	(81,000)	(84,000)
Purchase of trading investments	0	(452,000)
Net unrealized losses on trading investments	0	146,000
Deferred income taxes	463,000	(3,075,000)
Stock-based compensation	1,082,000	950,000
Tax benefit attributable to appreciation of common stock options exercised	(2,857,000)	(113,000)
Changes in operating assets and liabilities, net of effects from acquisitions:
Trade receivables	(3,191,000)	(3,242,000)
Employee receivables	(88,000)	7,000
Other receivables	(204,000)	(116,000)
Inventories	(5,960,000)	(5,313,000)
Prepaid expenses and other assets	(1,757,000)	(693,000)
Income tax refunds receivable	(367,000)	71,000
Trade payables	(4,021,000)	317,000
Accrued expenses	2,606,000	2,541,000
Advances from employees	501,000	111,000
Income taxes payable	6,568,000	2,499,000
Deferred compensation payable	124,000	119,000
Liabilities related to unrecognized tax positions	(823,000)	(590,000)
Other long-term assets	(87,000)	(63,000)
Other long-term obligations	976,000	(115,000)
Total adjustments	10,634,000	12,371,000
Net cash provided by operating activities	28,708,000	20,621,000
Capital expenditures for:
Property and equipment	(37,086,000)	(15,592,000)
Patents and trademarks	(1,768,000)	(718,000)
Proceeds from the sale of property and equipment	5,000	16,000
Proceeds from the sale of marketable securities	0	9,673,000
Cash paid in acquisitions	(8,250,000)	(96,226,000)
Net cash used in investing activities	(47,099,000)	(102,847,000)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of common stock	94,800,000	1,351,000
Borrowings on line of credit	0	1,500,000
Payments on line of credit	0	(8,500,000)
Proceeds from issuance of long-term debt	61,507,000	97,278,000
Payments on long-term debt	(137,426,000)	(9,289,000)
Long-term debt issuance costs	0	(522,000)
Payment of taxes related to an exchange of common stock	(819,000)	0
Excess tax benefits from stock-based compensation	2,857,000	113,000
Net cash provided by (used in) financing activities	20,919,000	81,931,000
EFFECT OF EXCHANGE RATES ON CASH	(444,000)	(540,000)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	2,084,000	(835,000)
CASH AND CASH EQUIVALENTS:
Beginning of period	3,735,000	6,133,000
End of period	5,819,000	5,298,000
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION-Cash paid during the period (net capitalized interest of $264 and $0, respectively):
Interest	749,000	71,000
Income taxes	3,192,000	4,447,000
SUPPLEMENTAL DISCLOSURES OF NON-CASH INVESTING AND FINANCING ACTIVITIES
Property and equipment purchases in accounts payable	7,065,000	2,077,000
Acquisition of developed technology in accrued expenses	$ 2,208,000	$ 500,000