SHARE INCENTIVE PLANS: (Tables)

12 Months Ended

Dec. 31, 2012

SHARE INCENTIVE PLANS:

Summary of share option awards activity under equity incentive plans

	Options Outstanding
	Number of Shares			Weighted Average Exercise Price
Outstanding at December 31, 2009		6,403,679		$	8.38
Options granted		605,340		$	21.73
Options exercised		(1,338,223	)	$	5.15
Options canceled		(235,822	)	$	10.99
Outstanding at December 31, 2010		5,434,974		$	10.56
Options granted		1,060,938		$	21.80
Options exercised		(1,586,577	)	$	8.83
Options canceled		(202,986	)	$	16.46
Outstanding at December 31, 2011		4,706,349		$	13.42
Options granted		879,160		$	70.72
Options exercised		(2,161,628	)	$	10.96
Options canceled		(137,959	)	$	28.33
Outstanding at December 31, 2012		3,285,922		$	29.74

Schedule of options outstanding and exercisable by exercise price range

	Options Outstanding at December 31, 2012
							Options Exercisable at December 31, 2012
			Weighted Average Remaining Contractual Life (Years)
Range of Exercise Price	Number Outstanding				Weighted Average Exercise Price		Number Exercisable		Weighted Average Exercise Price
$2.63 - $8.23		390,188		5.33	$	7.77		387,184	$	7.77
$8.45 - $9.19		340,168		4.68	$	9.01		326,966	$	9.03
$10.23 - $10.23		669,609		6.04	$	10.23		641,076	$	10.23
$10.50 - $18.87		331,007		6.48	$	14.37		249,142	$	13.97
$18.97 - $27.72		349,422		7.46	$	23.08		154,294	$	23.13
$29.03 - $34.00		363,133		8.55	$	31.19		101,665	$	30.83
$35.12 - $66.07		502,255		9.09	$	52.98		27,439	$	35.12
$79.38 - $79.38		26,700		9.83	$	79.38		—	$	—
$101.37 - $101.37		313,290		9.61	$	101.37		—	$	—
$1,003.13 - $1,003.13		150		0.40	$	1,003.13		150	$	1,003.13
$2.63 - $1,003.13		3,285,922		7.12	$	29.74		1,887,916	$	12.62

Summary of restricted share units activity

	Restricted Share Units Outstanding
	Number of Shares			Weighted Average Grant Date Fair Value
Non-vested restricted share units at December 31, 2009		—		$	—
Restricted share units granted		437,008			19.93
Restricted share units vested		(11,668	)		22.54
Restricted share units canceled		(10,395	)		19.89
Non-vested restricted share units at December 31, 2010		414,945		$	19.86
Restricted share units granted		1,143,142			27.00
Restricted share units vested		(224,005	)		20.02
Restricted share units canceled		(142,409	)		24.97
Non-vested restricted share units at December 31, 2011		1,191,673		$	26.05
Restricted share units granted		1,110,230			42.88
Restricted share units vested		(480,150	)		24.65
Restricted share units canceled		(58,593	)		30.39
Non-vested restricted share units at December 31, 2012		1,763,160		$	36.29

Summary of ordinary shares reserved for future issuance under equity incentive plans

	Number of Shares
Share options outstanding		3,285,922
Restricted share units outstanding		1,763,160
Share authorized for future issuance		918,275
ESPP shares available for future issuance		1,494,460
Total shares reserved for future issuance as of December 31, 2012		7,461,817

Schedule of weighted average assumptions used to value share options granted

	Employee Share Options						Employee Share Purchase Plan
	Year Ended December 31,						Year Ended December 31,
	2012		2011		2010		2012		2011		2010
Dividend yield, %		—		—		—		—		—		—
Expected volatility, %		56.6		55.9		59.8		68.05		41.8		54.7
Risk free interest rate, %		1.02		1.72		2.18		0.12		0.10		0.10
Expected life, years		6.25		6.25		6.23		0.53		0.53		0.53

Summary of the distribution of total share-based compensation expense

	Year Ended December 31,
	2012		2011		2010
	(in thousands)
Share-based compensation expense by caption:
Cost of goods sold	$	1,621	$	980	$	385
Research and development		19,356		11,906		8,031
Sales and marketing		8,055		4,894		2,730
General and administrative		5,987		3,632		2,955
Total share-based compensation expense	$	35,019	$	21,412	$	14,101
Share-based compensation expense by type of award:
Share options	$	14,104	$	12,568	$	11,017
ESPP		2,851		1,686		1,053
RSU		18,064		7,158		2,031
Total share-based compensation expense	$	35,019	$	21,412	$	14,101