Synaptics (SYNA) 10-Q 5 Feb 14 2014 Q2 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	6 Months Ended
	Dec. 31, 2013	Jan. 31, 2014
Document And Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	28-Dec-13	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q2	'
Entity Registrant Name	'SYNAPTICS INC	'
Entity Central Index Key	'0000817720	'
Current Fiscal Year End Date	'--06-28	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	35,571,927

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Dec. 31, 2013	Jun. 30, 2013
In Thousands, unless otherwise specified
Current Assets:	'	'
Cash and cash equivalents	$369,424	$355,303
Accounts receivable, net of allowances of $883 at December 31, 2013 and June 30, 2013	133,022	148,454
Inventories	51,746	49,948
Prepaid expenses and other current assets	18,885	6,715
Total current assets	573,077	560,420
Property and equipment at cost, net of accumulated depreciation of $41,888 and $35,285 at December 31, 2013 and June 30, 2013, respectively	64,666	58,035
Goodwill	59,670	20,695
Acquired intangibles	87,391	13,110
Non-current investments	18,260	16,969
Other assets	18,962	22,037
Total assets	822,026	691,266
Current Liabilities:	'	'
Accounts payable	68,578	83,710
Accrued compensation	22,163	23,728
Income taxes payable	9,057	10,751
Notes payable	2,305	'
Other accrued liabilities	47,664	31,437
Total current liabilities	149,767	149,626
Notes payable	'	2,305
Other liabilities	47,260	17,480
Stockholders' Equity:	'	'
Common stock: $0.001 par value; 120,000,000 shares authorized, 54,019,279 and 50,673,758 shares issued, and 34,971,568 and 33,289,826 shares outstanding, at December 31, 2013 and June 30, 2013, respectively	54	51
Additional paid-in capital	659,482	539,170
Treasury stock: 19,047,711 and 17,383,932 common treasury shares at December 31, 2013 and June 30, 2013, respectively, at cost	-530,422	-460,160
Accumulated other comprehensive income	7,620	6,802
Retained earnings	488,265	435,992
Total stockholders' equity	624,999	521,855
Liabilities and stockholders' equity	$822,026	$691,266

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2013	Jun. 30, 2013
In Thousands, except Share data, unless otherwise specified
Statement Of Financial Position [Abstract]	'	'
Allowance for doubtful accounts receivable	$883	$883
Property and equipment, accumulated depreciation	$41,888	$35,285
Common stock, par value	$0.00	$0.00
Common stock, shares authorized	120,000,000	120,000,000
Common stock, shares issued	54,019,279	50,673,758
Common stock, shares outstanding	34,971,568	33,289,826
Common treasury shares	19,047,711	17,383,932

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Income (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Income Statement [Abstract]	'	'	'	'
Net revenue	$205,763	$143,040	$428,370	$270,081
Cost of revenue	111,218	74,010	224,546	140,481
Gross margin	94,545	69,030	203,824	129,600
Operating expenses:	'	'	'	'
Research and development	45,931	34,257	86,373	67,059
Selling, general, and administrative	22,845	19,008	43,969	37,916
Acquired intangibles amortization	261	261	523	501
Change in contingent consideration	3,430	576	3,688	863
Total operating expenses	72,467	54,102	134,553	106,339
Operating income	22,078	14,928	69,271	23,261
Interest income	476	225	906	443
Interest expense	-5	-5	-9	-9
Income before provision for income taxes	22,549	15,148	70,168	23,695
Provision for income taxes	5,215	4,034	17,895	6,528
Net income	$17,334	$11,114	$52,273	$17,167
Net income per share:	'	'	'	'
Basic	$0.51	$0.34	$1.56	$0.52
Diluted	$0.48	$0.33	$1.47	$0.51
Shares used in computing net income per share:	'	'	'	'
Basic	33,990	32,478	33,475	32,710
Diluted	36,059	33,313	35,586	33,739

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Comprehensive Income (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Statement Of Income And Comprehensive Income [Abstract]	'	'	'	'
Net income	$17,334	$11,114	$52,273	$17,167
Other comprehensive income:	'	'	'	'
Change in unrealized net gain on investments before reclassifications	724	705	1,291	1,838
Reclassification from accumulated other comprehensive income to other income for accretion of non-current investments	-254	'	-473	'
Net current-period other comprehensive income	470	705	818	1,838
Comprehensive income	$17,804	$11,819	$53,091	$19,005

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Cash Flows (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Cash flows from operating activities	'	'
Net income	$52,273	$17,167
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Share-based and deferred compensation costs	14,733	16,473
Depreciation and amortization	6,727	4,875
Acquired intangibles amortization	2,119	501
Accretion and remeasurement of contingent consideration liability	3,688	863
Deferred taxes	9,136	-2,697
Impairment of property and equipment	'	136
Non-cash interest income	-473	'
Changes in operating assets and liabilities:	'	'
Accounts receivable, net	19,272	5,088
Inventories	356	952
Prepaid expenses and other current assets	-3,477	-541
Other assets	-4,060	1,599
Accounts payable	-13,163	-3,053
Accrued compensation	-2,791	2,900
Income taxes	-1,341	-6,399
Other accrued liabilities	2,775	7,012
Net cash provided by operating activities	85,774	44,876
Cash flows from investing activities	'	'
Proceeds from sales of non-current investments	'	2,150
Acquisition of business, net of cash acquired	-19,620	-5,000
Purchases of property and equipment	-17,142	-20,884
Net cash used in investing activities	-36,762	-23,734
Cash flows from financing activities	'	'
Payment of contingent consideration	'	-4,600
Purchases of treasury stock	-70,262	-31,280
Proceeds from issuance of shares	39,193	3,718
Payroll taxes for deferred stock units	-3,822	-1,454
Net cash used in financing activities	-34,891	-33,616
Net increase (decrease) in cash and cash equivalents	14,121	-12,474
Cash and cash equivalents at beginning of period	355,303	305,005
Cash and cash equivalents at end of period	369,424	292,531
Supplemental disclosures of cash flow information	'	'
Cash paid for income taxes	14,889	15,626
Non-cash investing activities:	'	'
Common stock issued pursuant to acquisition	70,280	'
Contingent consideration pursuant to acquisition	$37,499	'

Basis_of_Presentation

Basis of Presentation	6 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Basis of Presentation	'
	1. Basis of Presentation
	The accompanying unaudited condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission, or the SEC, and U.S. generally accepted accounting principles, or U.S. GAAP. However, certain information or footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to such SEC rules and regulations. In our opinion, the financial statements include all adjustments, which are of a normal and recurring nature, necessary for the fair presentation of the results of the interim periods presented. The results of operations for the interim periods are not necessarily indicative of the operating results for the full fiscal year or any future period. These financial statements should be read in conjunction with the audited consolidated financial statements and related notes included in our Annual Report on Form 10-K for the fiscal year ended June 30, 2013.
	The consolidated financial statements include our financial statements and those of our wholly owned subsidiaries. All significant intercompany balances and transactions have been eliminated upon consolidation.
	Our fiscal year is the 52- or 53-week period ending on the last Saturday in June. Our fiscal 2014 and 2013 are 52-week periods ending on June 28, 2014 and June 29, 2013, respectively. The quarterly fiscal periods presented in this report were 13-week periods for the three months ended December 28, 2013 and December 29, 2012. For ease of presentation, the accompanying consolidated financial statements have been shown as ending on calendar quarter end dates for all annual, interim, and quarterly financial statement captions, unless otherwise indicated.
	Use of Estimates
	The preparation of consolidated financial statements in conformity with U.S. GAAP requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenue, expenses, and related disclosure of contingent assets and liabilities. On an ongoing basis, we evaluate our estimates, including those related to revenue recognition, allowance for doubtful accounts, cost of revenue, inventories, loss on purchase commitments, product warranty, share-based compensation costs, provision for income taxes, deferred income tax asset valuation allowances, uncertain tax positions, tax contingencies, goodwill, intangible assets, investments, contingent consideration liability, and loss contingencies. We base our estimates on historical experience, applicable laws and regulations, and various other assumptions that we believe to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying value of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.
	Recently Issued Accounting Pronouncements
	There are no new accounting pronouncements that are expected to have a material impact on our condensed consolidated financial statements.

Revenue_Recognition

Revenue Recognition	6 Months Ended
	Dec. 31, 2013
Text Block [Abstract]	'
Revenue Recognition	'
	2. Revenue Recognition
	We recognize revenue from product sales when there is persuasive evidence that an arrangement exists, delivery has occurred and title has transferred, the price is fixed or determinable, and collection is reasonably assured, which is generally upon shipment of the product. We accrue for estimated sales returns, incentives, and other allowances at the time we recognize revenue. Our products contain embedded firmware and software that allows for further differentiation and customer integration, which together with our ASIC chip, delivers the essential functionality of our products and, as such, software revenue recognition guidance is not applicable.

Net_Income_Per_Share

Net Income Per Share	6 Months Ended
	Dec. 31, 2013
Earnings Per Share [Abstract]	'
Net Income Per Share	'
	3. Net Income Per Share
	The computation of basic and diluted net income per share was as follows (in thousands, except per share data):
		Three Months Ended				Six Months Ended
		December 31,				December 31,
		2013		2012		2013		2012
	Numerator:
	Net income	$	17,334	$	11,114	$	52,273	$	17,167
	Denominator:
	Shares, basic		33,990		32,478		33,475		32,710
	Effect of dilutive share-based awards		2,069		835		2,111		1,029
	Shares, diluted		36,059		33,313		35,586		33,739
	Net income per share:
	Basic	$	0.51	$	0.34	$	1.56	$	0.52
	Diluted	$	0.48	$	0.33	$	1.47	$	0.51
	Our basic net income per share amounts for each period presented have been computed using the weighted average number of shares of common stock outstanding. Our diluted net income per share amounts for each period presented include the weighted average effect of potentially dilutive shares. We use the “treasury stock” method to determine the dilutive effect of our stock options, deferred stock units, or DSUs, market stock units, or MSUs, and convertible notes.
	Dilutive net income per share amounts do not include the weighted average effect of 315,275 and 5,005,736 share-based awards that were outstanding during the three months ended December 31, 2013 and 2012, respectively, and 317,438 and 4,037,666 share-based awards that were outstanding during the six months ended December 31, 2013 and 2012, respectively. These share-based awards were not included in the computation of diluted net income per share because their effect would have been antidilutive.

Fair_Value

Fair Value	6 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
Fair Value	'
	4. Fair Value
	Financial assets and liabilities measured at fair value on a recurring basis, by level within the fair value hierarchy consisted of the following (in thousands):
		December 31,				June 30,
		2013				2013
		Level 1		Level 3		Level 1		Level 3
	Assets:
	Money market	$	361,760	$	—	$	350,521	$	—
	Auction rate securities		—		18,260		—		16,969
	Total available-for-sale securities	$	361,760	$	18,260	$	350,521	$	16,969
	Liabilities:
	Contingent consideration liability recorded for business combination	$	—	$	49,434	$	—	$	8,247
	In our condensed consolidated balance sheets as of December 31, 2013 and June 30, 2013, money market balances were included in cash and cash equivalents and auction rate securities, or ARS investments, were included in non-current investments. The contingent consideration liability recorded for business combinations was included in other liabilities of which $36.1 million and $8.1 million was included in the non-current portion of other liabilities as of December 31, 2013 and June 30, 2013, respectively, and $13.3 million and $196,000 has been included in other current liabilities as of December 31, 2013 and June 30, 2013, respectively.
	Changes in fair value of our Level 3 financial assets as of December 31, 2013 were as follows (in thousands):
	Balance as of June 30, 2013	$	16,969
	Net unrealized gain		1,291
	Balance as of December 31, 2013	$	18,260
	Changes in fair value of our Level 3 contingent consideration liability as of December 31, 2013 were as follows (in thousands):
	Balance as of June 30, 2013	$	8,247
	Contingent consideration liability incurred		37,499
	Accretion and remeasurement		3,688
	Balance as of December 31, 2013	$	49,434
	In connection with the acquisition of Validity Sensors, Inc., or Validity (see Note 13), we entered into a contingent consideration arrangement and may owe up to $162.5 million of additional consideration to the former Validity stockholders and option holders based on sales of products utilizing Validity technology through March 2016.
	In connection with the acquisition of Pacinian in June 2012, we entered into a contingent consideration arrangement, and subsequently paid $5.0 million of additional consideration to the former Pacinian stockholders upon customer acceptance of a ThinTouch product. As of December 31, 2013, we may owe up to $10.0 million of additional consideration to the former Pacinian stockholders based on sales of products utilizing ThinTouch technology through June 2016.
	There were no transfers in or out of our Level 1 or 3 assets or liabilities during the three and six months ended December 31, 2013 and 2012.
	The fair values of our accounts receivable and accounts payable approximate their carrying values because of the short-term nature of those instruments. In addition, our notes payable have been reclassified to current on our balance sheet as we intend to call the remaining outstanding notes in the next twelve months. The fair value of the notes payable approximate their carrying value. Intangible assets, property and equipment, and goodwill are measured at fair value on a non-recurring basis if impairment is indicated.

Auction_Rate_Securities

Auction Rate Securities	6 Months Ended
	Dec. 31, 2013
Text Block [Abstract]	'
Auction Rate Securities	'
	5. Auction Rate Securities
	Our ARS investments have failed to settle in auctions and are not liquid. In the event we need to access these funds prior to their maturity, we will not be able to do so without a loss of principal, unless redeemed by the issuers or a future auction on these investments is successful. During the three and six months ended December 31, 2013, none of our ARS investments were redeemed.
	As there are currently no active markets for our various failed ARS investments, we have estimated the fair value as of December 31, 2013 using a trinomial discounted cash flow analysis. The analysis considered, among others, the following factors:
		•		the collateral underlying the security investments;
		•		the creditworthiness of the counterparty;
		•		the timing of expected future cash flows;
		•		the probability of a successful auction in a future period;
		•		the underlying structure of each investment;
		•		the present value of future principal and interest payments discounted at rates considered to reflect current market conditions;
		•		a consideration of the probabilities of default, passing a future auction, or redemption at par for each period; and
		•		estimates of the recovery rates in the event of default for each investment.
	When possible, our failed ARS investments were compared to other observable market data or securities with similar characteristics. Our estimate of the fair value of our ARS investments could change materially from period to period based on future market conditions.
	Contractual maturities for our ARS investments are generally greater than five years, with fair value of $13.1 million maturing from calendar years 2015 to 2017, $3.2 million maturing from calendar years 2043 to 2045, and $2.0 million having no maturity date. Of our ARS investments, $5.5 million par value are investment grade, and the remaining $18.5 million par value are below investment grade.
	The various types of ARS investments we held as of December 31, 2013, including the original cost basis, other-than-temporary impairment included in retained earnings, new cost basis, unrealized gain/(loss), and fair value, consisted of the following (in thousands):
			Original Cost		Other-than-			New Cost		Unrealized			Fair Value
			Basis		temporary			Basis		Gain/(Loss)
					Impairment in
					Retained
					Earnings
	Student loans		$	3,500	$	(179	)	$	3,321	$	(142	)	$	3,179
	Credit linked notes			13,500		(8,098	)(1)		5,402		5,747			11,149
	Preferred stock			5,000		(5,000	)		—		2,000			2,000
	Municipals			2,000		(83	)		1,917		15			1,932
	Total ARS		$	24,000	$	(13,360	)	$	10,640	$	7,620		$	18,260
	-1	Other-than-temporary impairment in retained earnings is partially offset by cumulative accretion of $669,000 on non-current investments. Accretion is reclassified from accumulated other comprehensive income and recorded in the condensed consolidated statements of income as non-cash interest income.
	The various types of ARS investments we held as of June 30, 2013, including the original cost basis, other-than-temporary impairment included in retained earnings, new cost basis, unrealized gain/(loss), and fair value, consisted of the following (in thousands):
			Original Cost		Other-than-			New Cost		Unrealized			Fair Value
			Basis		temporary			Basis		Gain/(Loss)
					Impairment in
					Retained
					Earnings
	Student loans		$	3,500	$	(179	)	$	3,321	$	(168	)	$	3,153
	Credit linked notes			13,500		(8,571	)(1)		4,929		4,980			9,909
	Preferred stock			5,000		(5,000	)		—		2,000			2,000
	Municipals			2,000		(83	)		1,917		(10	)		1,907
	Total ARS		$	24,000	$	(13,833	)	$	10,167	$	6,802		$	16,969
	-1	Other-than-temporary impairment in retained earnings is partially offset by cumulative accretion of $196,000 on non-current investments. Accretion is reclassified from accumulated other comprehensive income and recorded in the condensed consolidated statements of income as non-cash interest income.
	The ARS investments in each of the above tables with unrealized losses have been in a continuous unrealized loss position for more than 12 months.
	We have accounted for all of our ARS investments as non-current as we are not able to reasonably determine when the ARS markets will recover or be restructured. Based on our ability to access our cash and cash equivalents, our expected operating cash flows, and our other sources of cash, we do not intend to sell the investments, and it is not more likely than not that we will be required to sell the investments before the recovery of the amortized cost basis. We will continue to monitor our ARS investments and evaluate our accounting for these investments quarterly.

Inventories

Inventories	6 Months Ended
	Dec. 31, 2013
Inventory Disclosure [Abstract]	'
Inventories	'
	6. Inventories
	Inventories are stated at the lower of cost (first-in, first-out method) or market (estimated net realizable value) and consisted of the following (in thousands):
		December 31,		June 30,
		2013		2013
	Raw materials	$	39,496	$	38,181
	Finished goods		12,250		11,767
		$	51,746	$	49,948

Other_Accrued_Liabilities

Other Accrued Liabilities	6 Months Ended
	Dec. 31, 2013
Payables And Accruals [Abstract]	'
Other Accrued Liabilities	'
	7. Other Accrued Liabilities
	Other accrued liabilities consisted of the following (in thousands):
		December 31,		June 30,
		2013		2013
	Customer obligations	$	21,150	$	16,291
	Contingent consideration		13,295		196
	Inventory obligations		4,500		6,333
	Warranty		1,459		1,696
	Other		7,260		6,921
		$	47,664	$	31,437

Product_Warranties_Indemnifica

Product Warranties, Indemnifications, and Contingencies	6 Months Ended
	Dec. 31, 2013
Commitments And Contingencies Disclosure [Abstract]	'
Product Warranties, Indemnifications, and Contingencies	'
	8. Product Warranties, Indemnifications, and Contingencies
	Product Warranties
	We generally warrant our products for a period of 12 months from the date of sale and estimate probable product warranty costs at the time we recognize revenue. Factors that affect our warranty liability include historical and anticipated rates of warranty claims, materials usage, rework, and delivery costs. However, we assess the adequacy of our warranty obligations each reporting period and adjust the accrued warranty liability on the basis of our estimates.
	Indemnifications
	In connection with certain third-party agreements we have executed in the past, we are obligated to indemnify the third party in connection with any technology infringement by us. We have also entered into indemnification agreements with our officers and directors. Maximum potential future payments cannot be estimated because these agreements do not have a maximum stated liability. However, historical costs related to these indemnification provisions have not been significant. We have not recorded any liability in our consolidated financial statements for such indemnification obligations.
	Contingencies
	We have in the past and may in the future receive notices from third parties that claim our products infringe their intellectual property rights. We cannot be certain that our technologies and products do not or will not infringe issued patents or other proprietary rights of third parties.
	Any infringement claims, with or without merit, could result in significant litigation costs and diversion of management and financial resources, including the payment of damages, which could have a material adverse effect on our business, financial condition, and results of operations.

ShareBased_Compensation

Share-Based Compensation	6 Months Ended
	Dec. 31, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'
Share-Based Compensation	'
	9. Share-Based Compensation
	Share-based compensation and the related tax benefit recognized in our condensed consolidated statements of income were as follows (in thousands):
		Three Months Ended					Six Months Ended
		December 31,					December 31,
		2013			2012		2013		2012
	Cost of revenue	$	262		$	198	$	516	$	441
	Research and development		4,241			3,879		8,168		7,790
	Selling, general, and administrative		3,119			3,929		5,980		8,242
	Total	$	7,622		$	8,006	$	14,664	$	16,473
	Income tax benefit on share-based compensation	$	2,834		$	2,179	$	4,806	$	4,397
	Historically, we have issued new shares in connection with our share-based compensation plans; however, treasury shares were also available for issuance as of December 31, 2013, including shares repurchased under our common stock repurchase program.
	Stock Options
	Stock option activity, including stock options granted, exercised, and forfeited, and weighted average exercise prices for options outstanding and exercisable, and the aggregate intrinsic value were as follows:
		Stock Option			Weighted		Aggregate
		Awards			Average		Intrinsic
		Outstanding			Exercise		Value
					Price		(in thousands)
	Balance at June 30, 2013		6,030,287		$	26.15
	Granted		290,106			43.87
	Exercised		(1,383,245	)		25.41
	Forfeited		(104,338	)		29.34
	Balance at December 31, 2013		4,832,810			27.36	$	111,499
	Exercisable at December 31, 2013		3,587,835		$	25.5	$	89,450
	The aggregate intrinsic value was determined using the closing price of our common stock on December 27, 2013 of $50.43 and excludes the impact of stock options that were not in-the-money.
	Deferred Stock Units
	DSU activity, including DSUs granted, delivered, and forfeited, and the balance and aggregate intrinsic value of DSUs was as follows:
		DSU			Aggregate
		Awards			Intrinsic
		Outstanding			Value
					(in thousands)
	Balance at June 30, 2013		1,005,435
	Granted		377,187
	Delivered		(250,071	)
	Forfeited		(52,096	)
	Balance at December 31, 2013		1,080,455		$	54,487
	The aggregate intrinsic value was determined using the closing price of our common stock on December 27, 2013 of $50.43.
	Of the shares delivered, 73,742 shares valued at $3.2 million were withheld to meet statutory minimum tax withholding requirements.
	Market Stock Units
	Our Amended and Restated 2010 Incentive Compensation Plan provides for the grant of MSU awards, which are a type of DSU award, to our employees, consultants, and directors. An MSU is a promise to deliver shares of our common stock at a future date based on the achievement of market-based performance requirements in accordance with the terms of the MSU grant agreement. We began granting MSUs in November 2012.
	We have granted MSUs to our executive officers, which were designed to vest in three tranches with the target quantity for each tranche equal to one-third of the total MSU grant. The first tranche vests based on a one-year performance period; the second tranche vests based on a two-year performance period; and the third tranche vests based on a three-year performance period. Performance is measured based on the achievement of a specified level of total stockholder return, or TSR, relative to the TSR of the Philadelphia Semiconductor Index, or SOX Index. The potential payout ranges from 0% to 200% of the grant target quantity and is adjusted on a two-to-one ratio based on our TSR performance relative to the SOX Index TSR performance using the following formula:
	(100% + ([Synaptics TSR - SOX Index TSR] x 2))
	Delivery of shares earned, if any, will take place on the dates provided in the applicable MSU grant agreement, assuming the grantee is still an employee, consultant, or director of our company at the end of the applicable performance period. On the delivery date, we withhold shares to cover statutory minimum tax withholding by delivering a net quantity of shares. Until delivery of shares, the grantee has no rights as a stockholder with respect to any shares underlying the MSU award.
	During the six months ended December 31, 2013, MSU activity, including MSUs granted, delivered, and forfeited, and the balance and aggregate intrinsic value of MSUs as of December 31, 2013 was as follows:
		MSU			Aggregate
		Awards			Intrinsic
		Outstanding			Value
					(in thousands)
	Balance at June 30, 2013		67,400
	Granted		80,730
	Performance adjustment		10,782
	Delivered		(33,249	)
	Forfeited		(5,333	)
	Balance at December 31, 2013		120,330		$	6,068
	As a result of the Synaptics TSR exceeding the SOX Index TSR by 24 percentage points, we delivered 148% of the targeted shares underlying the November 2012 MSU grants, or 10,782 additional shares. Of the shares delivered, 15,148 shares valued at $670,000 were withheld to meet statutory minimum tax withholding requirements.
	We valued the MSUs using the Monte Carlo simulation model and amortize the compensation expense over the three-year performance and service period by tranche. The grant date fair value for MSUs granted during the six months ended December 31, 2013 was $60.62 per MSU. The unrecognized share-based compensation cost of our outstanding MSUs was approximately $5.7 million as of December 31, 2013, which will be recognized over a weighted average period of approximately 1.6 years. The aggregate intrinsic value was determined using the closing price of our common stock on December 27, 2013 of $50.43.

Income_Taxes

Income Taxes	6 Months Ended
	Dec. 31, 2013
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	10. Income Taxes
	We account for income taxes under the asset and liability method. We consider the operating earnings of our foreign subsidiaries to be indefinitely invested outside the United States. Accordingly, no provision has been made for the federal, state, or foreign taxes that may result from future remittances of undistributed earnings of our foreign subsidiaries.
	The provision for income taxes of $5.2 million and $4.0 million for the three months ended December 31, 2013 and 2012, respectively, represented estimated federal, foreign, and state income taxes. The effective tax rate for the three months ended December 31, 2013 was 23.1% and diverged from the combined federal and state statutory rate primarily because of foreign income taxed at lower tax rates and the federal research credit, partially offset by foreign withholding taxes, nondeductible amortization and contingent consideration, and net unrecognized tax benefits associated with qualified stock options. The effective tax rate for the three months ended December 31, 2012 was 26.6% and diverged from the combined federal and state statutory rate primarily because of foreign income taxed at lower tax rates, partially offset by foreign withholding taxes, net unrecognized tax benefit associated with qualified stock options, and a slight increase in the liability for unrecognized tax benefits related to uncertain tax positions.
	The provision for income taxes of $17.9 million and $6.5 million for the six months ended December 31, 2013 and 2012, respectively, represented estimated federal, foreign, and state income taxes. The effective tax rate for the six months ended December 31, 2013 was 25.5% and diverged from the combined federal and state statutory rate primarily because of foreign income taxed at lower tax rates and the federal research credit, partially offset by foreign withholding taxes, nondeductible amortization and contingent consideration, and net unrecognized tax benefits associated with qualified stock options. The effective tax rate for the six months ended December 31, 2012 was 27.6% and diverged from the combined federal and state statutory rate primarily because of foreign income taxed at lower tax rates, partially offset by foreign withholding taxes, net unrecognized tax benefit associated with qualified stock options, and a slight increase in the liability for unrecognized tax benefits related to uncertain tax positions.
	Unrecognized Tax Benefits
	The total liability for gross unrecognized tax benefits increased $984,000 during the six months ended December 31, 2013 to $9.2 million from $8.2 million at June 30, 2013 and was included in other liabilities on our condensed consolidated balance sheets. All of this amount would affect the effective tax rate on income from continuing operations, if recognized. The balance of interest and penalties accrued related to unrecognized tax benefits as of December 31, 2013 was $938,000 and increased by $26,000 from June 30, 2013. We classify interest and penalties as components of income tax expense.
	In May 2011, we were notified by the Internal Revenue Service, or the Service, that our fiscal 2003 through 2006 and fiscal 2008 through 2010 would be subject to examination. The early periods were being audited in connection with a mandatory review of tax refunds in excess of $2.0 million when we carried back our fiscal 2008 net operating loss. In March 2013, we received the Revenue Agent’s Report resolving our examination with the Service and paid an assessment that had no material impact to our condensed consolidated financial statements. Our case is pending review by the Joint Committee on Taxation, which we anticipate to conclude in our fiscal 2014. Any prospective adjustments to our unrecognized tax benefits will be recorded as an increase or decrease to income tax expense and cause a corresponding change to our effective tax rate. Accordingly, our effective tax rate could fluctuate materially from period to period.
	On January 2, 2013, President Barack Obama signed into law The American Taxpayer Relief Act of 2013, or the Act. The Act extends the research credit for two years retroactively from January 1, 2012 through December 31, 2013. As such, we will only recognize six months of tax benefit in our current fiscal year.
	Our major tax jurisdictions are the United States, California, and Hong Kong SAR, and fiscal 2003 onward remain subject to examination by one or more of these jurisdictions.

Segment_Customers_and_Geograph

Segment, Customers, and Geographic Information	6 Months Ended
	Dec. 31, 2013
Segment Reporting [Abstract]	'
Segment, Customers, and Geographic Information	'
	11. Segment, Customers, and Geographic Information
	We operate in one segment: the development, marketing, and sale of interactive user interface solutions for electronic devices and products. We generate our revenue from two broad product categories: the mobile product market and the personal computing, or PC, market. The mobile product market accounted for 65% and 57% of net revenue for the three months ended December 31, 2013 and 2012, respectively, and 69% and 54% of net revenue for the six months ended December 31, 2013 and 2012, respectively.
	Net revenue within geographic areas based on our customers’ locations for the periods presented was as follows (in thousands):
			Three Months Ended						Six Months Ended
			December 31,						December 31,
			2013			2012			2013			2012
	China		$	110,570		$	95,385		$	217,936		$	180,295
	South Korea			48,669			6,490			117,827			12,862
	Taiwan			34,068			20,690			66,369			36,581
	Japan			10,386			13,906			22,466			27,687
	Other			2,070			6,569			3,772			12,656
			$	205,763		$	143,040		$	428,370		$	270,081
	Net revenue from external customers for each group of similar products was as follows (in thousands):
			Three Months Ended						Six Months Ended
			December 31,						December 31,
			2013			2012			2013			2012
	Mobile product applications		$	133,604		$	81,589		$	296,268		$	146,205
	PC product applications			72,159			61,451			132,102			123,876
			$	205,763		$	143,040		$	428,370		$	270,081
	Net revenue from major customers as a percentage of total net revenue for the periods presented was as follows:
			Three Months Ended						Six Months Ended
			December 31,						December 31,
			2013			2012			2013			2012
	Customer A			18	%		*			20	%		*
	Customer B			11	%		*			*			*
	*	Less than 10%
	We sell our products to original equipment manufacturers, or OEMs, and to contract manufacturers that provide manufacturing services to OEMs. We extend credit based on an evaluation of a customer’s financial condition, and we generally do not require collateral. Major customer accounts receivable as a percentage of total accounts receivable at the dates presented were as follows:
			December 31,			June 30,
			2013			2013
	Customer A			17	%		*
	Customer B			14	%		27	%
	*	Less than 10%

Comprehensive_Income

Comprehensive Income	6 Months Ended
	Dec. 31, 2013
Equity [Abstract]	'
Comprehensive Income	'
	12. Comprehensive Income
	Our comprehensive income generally consists of net income plus the effect of unrealized gains and losses on our investments, primarily due to temporary changes in market value of certain of our ARS investments. In addition, we recognize the noncredit portion of other-than-temporary impairment on debt securities in other comprehensive income. We recognize foreign currency remeasurement adjustments and transaction gains and losses in our condensed consolidated statements of income as the U.S. dollar is the functional currency of our foreign entities.

Acquisition_of_Validity

Acquisition of Validity	6 Months Ended
	Dec. 31, 2013
Business Combinations [Abstract]	'
Acquisition of Validity	'
	13. Acquisition of Validity
	On November 7, 2013, or the Acquisition Date, we acquired 100% of the outstanding common and preferred shares and voting interest of Validity. This acquisition has been accounted for as a business combination. The results of Validity’s operations have been included in the consolidated financial statements since the Acquisition Date. Validity was a privately held company, which was a leading provider of capacitive-based biometric fingerprint authentication solutions for notebook applications. Validity had begun to target its biometric fingerprint authentication solutions for smartphone and tablet applications and had one revenue-generating design win with one customer as of the Acquisition Date. We believe this acquisition brings together substantial synergies through the combination of the Validity technologies and workforce and our financial stability, scale, infrastructure, customer relationships, and technology delivery performance record. With this acquisition, we expect to gain access to the fast growing biometrics market, significantly expanding our market opportunity and underscoring our commitment to making smart devices easier to use.
	The Acquisition Date fair value of the consideration transferred totaled $127.8 million, which consisted of the following (in thousands):
	Cash	$	19,985
	Shares issued		70,280
	Contingent consideration		37,499
		$	127,764
	In connection with the acquisition, we issued 1,577,559 shares to the former Validity shareholders valued at $70.3 million based on the Acquisition Date closing price of our common stock of $44.55. The contingent consideration arrangement requires us to make earn-out consideration payments of up to $162.5 million, which is based primarily on sales, during certain time periods, ending on March 31, 2016, of certain products embodying Validity fingerprint sensor technology. The earn-out consideration will be payable in cash, except for the initial $16.3 million of contingent consideration, which will be satisfied by delivery of 338,427 shares of our common stock, based on the transaction reference price of $48.278. Under certain conditions, we may be required to deliver additional shares to ensure that at least 40% of the value of consideration transferred to the former Validity shareholders is paid in shares of our common stock.
	The estimated fair value of the contingent consideration arrangement as of the Acquisition Date was $37.5 million. We estimated the fair value of the contingent consideration using a probability-weighted discounted cash flow model. These fair value measurements were based on significant inputs not observable in the market and thus represent a Level 3 measurement. The key assumptions in applying the probability-weighted discounted cash flow model was a 23% discount rate under three unequally weighted cash flow scenarios reviewed by senior management and our board to assess the transaction. The contingent consideration will be remeasured to fair value in future reporting periods and any adjustments will be recorded through earnings.
	The following table summarizes the estimated fair values of the assets acquired and liabilities assumed as of the Acquisition Date (in thousands):
	Cash	$	365
	Accounts receivable		3,840
	Inventory		2,154
	Prepaid expenses and other		984
	Property and equipment		326
	Deferred tax assets		13,602
	Acquired intangible assets		76,400
	Other assets		1,283
	Total identifiable assets acquired		98,954
	Accounts payable		2,141
	Accrued liabilities		1,497
	Non-current deferred tax liabilities		5,327
	Non-current taxes payable		700
	Other non-current accrued liabilities		500
	Net identifiable assets acquired		88,789
	Goodwill		38,975
	Net assets acquired	$	127,764
	Of the $76.4 million of acquired intangible assets, $57.0 million was assigned to in-process research and development and will be amortized over an estimated useful life to be determined at the date the underlying projects are determined to be substantively complete, $18.6 million was assigned to developed technology and will be amortized over an estimated useful life of 2-3 years, and $750,000 was assigned to backlog and was amortized during the quarter ended December 31, 2013. In-process research and development refers to the next generation fingerprint authentication technology designed for the mobile product and PC markets and developed technology refers to the established fingerprint authentication technology initially designed for and sold into the PC market and adapted for the mobile product market. We anticipate that all in-process research and development projects will be substantially completed within the next six to twelve months. The value of goodwill reflects the anticipated synergies of the combined operations and workforce of Validity as of the Acquisition Date.
	As of December 31, 2013, our purchase price allocation is preliminary and has not been finalized. Additional information, which existed as of the Acquisition Date but is yet unknown to us, may become known to us during the remainder of the measurement period, which will not exceed 12 months from the Acquisition Date. Changes to amounts recorded as assets or liabilities will be recorded as retrospective adjustments to the provisional amounts recognized as of the Acquisition Date and may result in a corresponding adjustment to goodwill.
	In connection with the acquisition, we recognized $1.2 million of indemnification assets, consisting of $700,000 for income tax and $500,000 for service tax. These amounts represent estimated tax settlement plus interest and penalties. Under the merger agreement, we are indemnified for any additional tax liability incurred (as well as other reasonable expenses) before the acquisition.
	The Validity fingerprint authentication products are an extension of our existing interactive user interface solution products and are marketed to our existing customer base. We intend to report these products based on device type. Accordingly, we continue to operate in one segment and therefore the goodwill applies to a company-wide reporting unit. None of the goodwill is expected to be deductible for income tax purposes.
	We recognized approximately $2.0 million of legal and consulting costs that were expensed in fiscal 2014. These costs are included in our consolidated statements of income as selling, general, and administrative expenses.
	Prior to the acquisition, we did not have a preexisting relationship with Validity.
	The condensed consolidated financial statements include $4.3 million revenue and approximately $2.5 million of operating loss of Validity from the date of the acquisition through December 31, 2013.
	The following unaudited pro forma financial information presents the combined results of operations for us and Validity as if the acquisition had occurred on July 1, 2012. The unaudited pro forma financial information has been prepared for comparative purposes only and does not purport to be indicative of the actual operating results that would have been recorded had the acquisition actually taken place on July 1, 2012, and should not be taken as indicative of future consolidated operating results. Additionally, the unaudited pro forma financial results do not include any anticipated synergies or other expected benefits from the acquisition.
		Three Months Ended						Six Months Ended
		December 31,						December 31,
		2013			2012			2013			2012
		(in thousands, except per share data)
	Revenue	$	206,844		$	146,869		$	436,253		$	276,924
	Net income		16,354			4,732			45,785			5,807
	Net income per share—diluted		0.44			0.14			1.25			0.16
	Pro forma adjustments used to arrive at pro forma net income for the three and six months ended December 31, 2013 and December 31, 2012, were as follows (in thousands):
		Three Months Ended						Six Months Ended
		December 31,						December 31,
		2013			2012			2013			2012
	Buyer transaction costs	$	969		$	—		$	2,000		$	—
	Seller transaction costs		—			—			517			—
	Inventory adjustment		575			—			575			—
	Share-based compensation		140			87			280			174
	Intangible amortization		(2,060	)		(2,060	)		(4,121	)		(3,497	)
	Deferred compensation		49			(19	)		31			(37	)
	Total	$	(327	)	$	(1,992	)	$	(718	)	$	(3,360	)

Acquired_Intangibles

Acquired Intangibles	6 Months Ended
	Dec. 31, 2013
Goodwill And Intangible Assets Disclosure [Abstract]	'
Acquired Intangibles	'
	14. Acquired Intangibles
	The following table summarizes the life, the gross carrying value of our acquired intangible assets, and the related accumulated amortization as of December 31, 2013 and June 30, 2013 (in thousands):
				December 31,			June 30,
		Life		2013			2013
	In-process research and development	To Be Determined		$	57,000		$	8,900
	Finger print developed technology	2-3 years			18,650			—
	Thintouch developed technology	7 years			8,900			—
	Customer relationships	5 years			3,800			3,800
	Licensed technology and other	5 years			1,335			1,335
	Backlog	Less than 1 year			750			—
	Patents	5 years			100			100
					90,535			14,135
	Accumulated amortization				(3,144	)		(1,025	)
	Acquired intangibles, net			$	87,391		$	13,110
	The total amortization expense for the acquired intangible assets was $1.9 million and $261,000 for the three months ended December 31, 2013, and 2012, respectively, and $2.1 million and $501,000 for the six months ended December 31, 2013, and 2012, respectively. This amortization expense was included in our condensed consolidated statements of income in cost of revenue and acquired intangibles amortization.
	The following table presents expected annual aggregate amortization expense as of December 31, 2013 (in thousands):
	Remainder of 2014	$	5,280
	2015		10,560
	2016		7,016
	2017		3,221
	2018		1,293
	Thereafter		3,021
	To be determined		57,000
	Future amortization	$	87,391

Subsequent_Events

Subsequent Events	6 Months Ended
	Dec. 31, 2013
Subsequent Events [Abstract]	'
Subsequent Events	'
	15. Subsequent Events
	On January 2, 2014, we announced that our 0.75% convertible senior subordinated notes due 2024, or Notes, are convertible during the first calendar quarter of 2014 as a result of our common stock price exceeding the conversion trigger for 20 of the last 30 consecutive trading days ending on the last trading day of the calendar quarter ended December 31, 2013. As we previously made a principal conversion settlement election to settle the principal in cash, the principal amount of any Notes tendered for conversion will be settled in cash following the cash settlement averaging period as defined in the Indenture.
	On January 21, 2014, our board authorized us to call for redemption any remaining outstanding Notes, which have not been submitted for conversion or retired. Accordingly, Notes have been classified as a short-term liability on the balance sheet as we intend to call the remaining outstanding Notes within the next 12 months.
	On January 22, 2014, we purchased a 5.35 acre site, with two single story buildings totaling approximately 80,000 square feet, located adjacent to our San Jose headquarters for approximately $10.1 million in cash. We plan to retrofit one of the two buildings, or approximately 51,000 square feet, to support expansion of our San Jose-based employee population.
	On February 3, 2014, we issued a Notice of Redemption setting April 2, 2014 as the redemption date upon which we will redeem 100% of the principal amount, plus accrued and unpaid interest, of any remaining outstanding Notes. Noteholders have the right to convert any of their Notes that we have called for redemption at any time prior to 5:00 p.m., New York City time, on March 31, 2014.

Basis_of_Presentation_Policies

Basis of Presentation (Policies)	6 Months Ended
	Dec. 31, 2013
Accounting Policies [Abstract]	'
Use of Estimates	'
	Use of Estimates
	The preparation of consolidated financial statements in conformity with U.S. GAAP requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenue, expenses, and related disclosure of contingent assets and liabilities. On an ongoing basis, we evaluate our estimates, including those related to revenue recognition, allowance for doubtful accounts, cost of revenue, inventories, loss on purchase commitments, product warranty, share-based compensation costs, provision for income taxes, deferred income tax asset valuation allowances, uncertain tax positions, tax contingencies, goodwill, intangible assets, investments, contingent consideration liability, and loss contingencies. We base our estimates on historical experience, applicable laws and regulations, and various other assumptions that we believe to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying value of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.
Recently Issued Accounting Pronouncements	'
	Recently Issued Accounting Pronouncements
	There are no new accounting pronouncements that are expected to have a material impact on our condensed consolidated financial statements.

Net_Income_Per_Share_Tables

Net Income Per Share (Tables)	6 Months Ended
	Dec. 31, 2013
Earnings Per Share [Abstract]	'
Basic and Diluted Net Income Per Share	'
	The computation of basic and diluted net income per share was as follows (in thousands, except per share data):
		Three Months Ended				Six Months Ended
		December 31,				December 31,
		2013		2012		2013		2012
	Numerator:
	Net income	$	17,334	$	11,114	$	52,273	$	17,167
	Denominator:
	Shares, basic		33,990		32,478		33,475		32,710
	Effect of dilutive share-based awards		2,069		835		2,111		1,029
	Shares, diluted		36,059		33,313		35,586		33,739
	Net income per share:
	Basic	$	0.51	$	0.34	$	1.56	$	0.52
	Diluted	$	0.48	$	0.33	$	1.47	$	0.51

Fair_Value_Tables

Fair Value (Tables)	6 Months Ended
	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
Financial Assets and Liabilities Measured at Fair Value on Recurring Basis	'
	Financial assets and liabilities measured at fair value on a recurring basis, by level within the fair value hierarchy consisted of the following (in thousands):
		December 31,				June 30,
		2013				2013
		Level 1		Level 3		Level 1		Level 3
	Assets:
	Money market	$	361,760	$	—	$	350,521	$	—
	Auction rate securities		—		18,260		—		16,969
	Total available-for-sale securities	$	361,760	$	18,260	$	350,521	$	16,969
	Liabilities:
	Contingent consideration liability recorded for business combination	$	—	$	49,434	$	—	$	8,247
Changes in Fair Value of Level 3 Financial Assets	'
	Changes in fair value of our Level 3 financial assets as of December 31, 2013 were as follows (in thousands):
	Balance as of June 30, 2013	$	16,969
	Net unrealized gain		1,291
	Balance as of December 31, 2013	$	18,260
Changes in Fair Value of Level 3 Contingent Consideration Liability	'
	Changes in fair value of our Level 3 contingent consideration liability as of December 31, 2013 were as follows (in thousands):
	Balance as of June 30, 2013	$	8,247
	Contingent consideration liability incurred		37,499
	Accretion and remeasurement		3,688
	Balance as of December 31, 2013	$	49,434

Auction_Rate_Securities_Tables

Auction Rate Securities (Tables)	6 Months Ended
	Dec. 31, 2013
Text Block [Abstract]	'
ARS Investments	'
	The various types of ARS investments we held as of December 31, 2013, including the original cost basis, other-than-temporary impairment included in retained earnings, new cost basis, unrealized gain/(loss), and fair value, consisted of the following (in thousands):
			Original Cost		Other-than-			New Cost		Unrealized			Fair Value
			Basis		temporary			Basis		Gain/(Loss)
					Impairment in
					Retained
					Earnings
	Student loans		$	3,500	$	(179	)	$	3,321	$	(142	)	$	3,179
	Credit linked notes			13,500		(8,098	)(1)		5,402		5,747			11,149
	Preferred stock			5,000		(5,000	)		—		2,000			2,000
	Municipals			2,000		(83	)		1,917		15			1,932
	Total ARS		$	24,000	$	(13,360	)	$	10,640	$	7,620		$	18,260
	-1	Other-than-temporary impairment in retained earnings is partially offset by cumulative accretion of $669,000 on non-current investments. Accretion is reclassified from accumulated other comprehensive income and recorded in the condensed consolidated statements of income as non-cash interest income.
	The various types of ARS investments we held as of June 30, 2013, including the original cost basis, other-than-temporary impairment included in retained earnings, new cost basis, unrealized gain/(loss), and fair value, consisted of the following (in thousands):
			Original Cost		Other-than-			New Cost		Unrealized			Fair Value
			Basis		temporary			Basis		Gain/(Loss)
					Impairment in
					Retained
					Earnings
	Student loans		$	3,500	$	(179	)	$	3,321	$	(168	)	$	3,153
	Credit linked notes			13,500		(8,571	)(1)		4,929		4,980			9,909
	Preferred stock			5,000		(5,000	)		—		2,000			2,000
	Municipals			2,000		(83	)		1,917		(10	)		1,907
	Total ARS		$	24,000	$	(13,833	)	$	10,167	$	6,802		$	16,969
	-1	Other-than-temporary impairment in retained earnings is partially offset by cumulative accretion of $196,000 on non-current investments. Accretion is reclassified from accumulated other comprehensive income and recorded in the condensed consolidated statements of income as non-cash interest income.

Inventories_Tables

Inventories (Tables)	6 Months Ended
	Dec. 31, 2013
Inventory Disclosure [Abstract]	'
Inventories	'
	Inventories are stated at the lower of cost (first-in, first-out method) or market (estimated net realizable value) and consisted of the following (in thousands):
		December 31,		June 30,
		2013		2013
	Raw materials	$	39,496	$	38,181
	Finished goods		12,250		11,767
		$	51,746	$	49,948

Other_Accrued_Liabilities_Tabl

Other Accrued Liabilities (Tables)	6 Months Ended
	Dec. 31, 2013
Payables And Accruals [Abstract]	'
Other Accrued Liabilities	'
	Other accrued liabilities consisted of the following (in thousands):
		December 31,		June 30,
		2013		2013
	Customer obligations	$	21,150	$	16,291
	Contingent consideration		13,295		196
	Inventory obligations		4,500		6,333
	Warranty		1,459		1,696
	Other		7,260		6,921
		$	47,664	$	31,437

ShareBased_Compensation_Tables

Share-Based Compensation (Tables)	6 Months Ended
	Dec. 31, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'
Share-Based Compensation and Related Tax Benefit Recognized in Condensed Consolidated Statements of Income	'
	Share-based compensation and the related tax benefit recognized in our condensed consolidated statements of income were as follows (in thousands):
		Three Months Ended					Six Months Ended
		December 31,					December 31,
		2013			2012		2013		2012
	Cost of revenue	$	262		$	198	$	516	$	441
	Research and development		4,241			3,879		8,168		7,790
	Selling, general, and administrative		3,119			3,929		5,980		8,242
	Total	$	7,622		$	8,006	$	14,664	$	16,473
	Income tax benefit on share-based compensation	$	2,834		$	2,179	$	4,806	$	4,397
Balance of Outstanding and Exercisable Stock Options	'
	Stock option activity, including stock options granted, exercised, and forfeited, and weighted average exercise prices for options outstanding and exercisable, and the aggregate intrinsic value were as follows:
		Stock Option			Weighted		Aggregate
		Awards			Average		Intrinsic
		Outstanding			Exercise		Value
					Price		(in thousands)
	Balance at June 30, 2013		6,030,287		$	26.15
	Granted		290,106			43.87
	Exercised		(1,383,245	)		25.41
	Forfeited		(104,338	)		29.34
	Balance at December 31, 2013		4,832,810			27.36	$	111,499
	Exercisable at December 31, 2013		3,587,835		$	25.5	$	89,450
Balance and Aggregate Intrinsic Value of DSUs	'
	DSU activity, including DSUs granted, delivered, and forfeited, and the balance and aggregate intrinsic value of DSUs was as follows:
		DSU			Aggregate
		Awards			Intrinsic
		Outstanding			Value
					(in thousands)
	Balance at June 30, 2013		1,005,435
	Granted		377,187
	Delivered		(250,071	)
	Forfeited		(52,096	)
	Balance at December 31, 2013		1,080,455		$	54,487
Balance and Aggregate Intrinsic Value of MSUs	'
	During the six months ended December 31, 2013, MSU activity, including MSUs granted, delivered, and forfeited, and the balance and aggregate intrinsic value of MSUs as of December 31, 2013 was as follows:
		MSU			Aggregate
		Awards			Intrinsic
		Outstanding			Value
					(in thousands)
	Balance at June 30, 2013		67,400
	Granted		80,730
	Performance adjustment		10,782
	Delivered		(33,249	)
	Forfeited		(5,333	)
	Balance at December 31, 2013		120,330		$	6,068

Segment_Customers_and_Geograph1

Segment, Customers, and Geographic Information (Tables)	6 Months Ended
	Dec. 31, 2013
Segment Reporting [Abstract]	'
Net Revenue within Geographic Areas Based on Customers' Locations	'
	Net revenue within geographic areas based on our customers’ locations for the periods presented was as follows (in thousands):
			Three Months Ended						Six Months Ended
			December 31,						December 31,
			2013			2012			2013			2012
	China		$	110,570		$	95,385		$	217,936		$	180,295
	South Korea			48,669			6,490			117,827			12,862
	Taiwan			34,068			20,690			66,369			36,581
	Japan			10,386			13,906			22,466			27,687
	Other			2,070			6,569			3,772			12,656
			$	205,763		$	143,040		$	428,370		$	270,081
Net Revenue from External Customers	'
	Net revenue from external customers for each group of similar products was as follows (in thousands):
			Three Months Ended						Six Months Ended
			December 31,						December 31,
			2013			2012			2013			2012
	Mobile product applications		$	133,604		$	81,589		$	296,268		$	146,205
	PC product applications			72,159			61,451			132,102			123,876
			$	205,763		$	143,040		$	428,370		$	270,081
Major Customers' as Percentage of Net Revenue	'
	Net revenue from major customers as a percentage of total net revenue for the periods presented was as follows:
			Three Months Ended						Six Months Ended
			December 31,						December 31,
			2013			2012			2013			2012
	Customer A			18	%		*			20	%		*
	Customer B			11	%		*			*			*
	*	Less than 10%
Major Customer Accounts Receivable as Percentage of Accounts Receivable	'
	Major customer accounts receivable as a percentage of total accounts receivable at the dates presented were as follows:
			December 31,			June 30,
			2013			2013
	Customer A			17	%		*
	Customer B			14	%		27	%
	*	Less than 10%

Acquisition_of_Validity_Tables

Acquisition of Validity (Tables)	6 Months Ended
	Dec. 31, 2013
Business Combinations [Abstract]	'
Summary of Fair Value of Consideration	'
	The Acquisition Date fair value of the consideration transferred totaled $127.8 million, which consisted of the following (in thousands):
	Cash	$	19,985
	Shares issued		70,280
	Contingent consideration		37,499
		$	127,764
Summary of Estimated Fair Values of Assets Acquired and Liabilities Assumed	'
	The following table summarizes the estimated fair values of the assets acquired and liabilities assumed as of the Acquisition Date (in thousands):
	Cash	$	365
	Accounts receivable		3,840
	Inventory		2,154
	Prepaid expenses and other		984
	Property and equipment		326
	Deferred tax assets		13,602
	Acquired intangible assets		76,400
	Other assets		1,283
	Total identifiable assets acquired		98,954
	Accounts payable		2,141
	Accrued liabilities		1,497
	Non-current deferred tax liabilities		5,327
	Non-current taxes payable		700
	Other non-current accrued liabilities		500
	Net identifiable assets acquired		88,789
	Goodwill		38,975
	Net assets acquired	$	127,764
Summary of Financial Information Presents Combined Results of Operations for Acquisition	'
	The following unaudited pro forma financial information presents the combined results of operations for us and Validity as if the acquisition had occurred on July 1, 2012. The unaudited pro forma financial information has been prepared for comparative purposes only and does not purport to be indicative of the actual operating results that would have been recorded had the acquisition actually taken place on July 1, 2012, and should not be taken as indicative of future consolidated operating results. Additionally, the unaudited pro forma financial results do not include any anticipated synergies or other expected benefits from the acquisition.
		Three Months Ended						Six Months Ended
		December 31,						December 31,
		2013			2012			2013			2012
		(in thousands, except per share data)
	Revenue	$	206,844		$	146,869		$	436,253		$	276,924
	Net income		16,354			4,732			45,785			5,807
	Net income per share—diluted		0.44			0.14			1.25			0.16
Pro Forma Adjustments Used to Arrive at Pro Forma Net Income	'
	Pro forma adjustments used to arrive at pro forma net income for the three and six months ended December 31, 2013 and December 31, 2012, were as follows (in thousands):
		Three Months Ended						Six Months Ended
		December 31,						December 31,
		2013			2012			2013			2012
	Buyer transaction costs	$	969		$	—		$	2,000		$	—
	Seller transaction costs		—			—			517			—
	Inventory adjustment		575			—			575			—
	Share-based compensation		140			87			280			174
	Intangible amortization		(2,060	)		(2,060	)		(4,121	)		(3,497	)
	Deferred compensation		49			(19	)		31			(37	)
	Total	$	(327	)	$	(1,992	)	$	(718	)	$	(3,360	)

Acquired_Intangibles_Tables

Acquired Intangibles (Tables)	6 Months Ended
	Dec. 31, 2013
Goodwill And Intangible Assets Disclosure [Abstract]	'
Summary of Life, Gross Carrying Value of Acquired Intangible Assets, and Related Accumulated Amortization	'
	The following table summarizes the life, the gross carrying value of our acquired intangible assets, and the related accumulated amortization as of December 31, 2013 and June 30, 2013 (in thousands):
				December 31,			June 30,
		Life		2013			2013
	In-process research and development	To Be Determined		$	57,000		$	8,900
	Finger print developed technology	2-3 years			18,650			—
	Thintouch developed technology	7 years			8,900			—
	Customer relationships	5 years			3,800			3,800
	Licensed technology and other	5 years			1,335			1,335
	Backlog	Less than 1 year			750			—
	Patents	5 years			100			100
					90,535			14,135
	Accumulated amortization				(3,144	)		(1,025	)
	Acquired intangibles, net			$	87,391		$	13,110
Schedule of Expected Annual Aggregate Amortization Expense	'
	The following table presents expected annual aggregate amortization expense as of December 31, 2013 (in thousands):
	Remainder of 2014	$	5,280
	2015		10,560
	2016		7,016
	2017		3,221
	2018		1,293
	Thereafter		3,021
	To be determined		57,000

Net_Income_Per_Share_Basic_and

Net Income Per Share - Basic and Diluted Net Income Per Share (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Numerator:	'	'	'	'
Net income	$17,334	$11,114	$52,273	$17,167
Denominator:	'	'	'	'
Shares, basic	33,990	32,478	33,475	32,710
Effect of dilutive share-based awards	2,069	835	2,111	1,029
Shares, diluted	36,059	33,313	35,586	33,739
Net income per share:	'	'	'	'
Basic	$0.51	$0.34	$1.56	$0.52
Diluted	$0.48	$0.33	$1.47	$0.51

Net_Income_Per_Share_Additiona

Net Income Per Share - Additional Information (Detail) (Stock Compensation Plan [Member])	3 Months Ended		6 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Stock Compensation Plan [Member]	'	'	'	'
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]	'	'	'	'
Share-based awards	315,275	5,005,736	317,438	4,037,666

Fair_Value_Financial_Assets_an

Fair Value - Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) (Fair Value, Measurements, Recurring [Member], USD $)	Dec. 31, 2013	Jun. 30, 2013
In Thousands, unless otherwise specified
Level 1 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total available-for-sale securities	$361,760	$350,521
Level 1 [Member] | Money Market [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total available-for-sale securities	361,760	350,521
Level 3 [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total available-for-sale securities	18,260	16,969
Level 3 [Member] | Auction Rate Securities [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Total available-for-sale securities	18,260	16,969
Level 3 [Member] | Contingent Consideration Liability Recorded for Business Combination [Member]	'	'
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]	'	'
Contingent consideration liability recorded for business combination	$49,434	$8,247

Fair_Value_Additional_Informat

Fair Value - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2013	Jun. 30, 2013	Dec. 31, 2013	Jun. 30, 2013
					Validity Sensors, Inc [Member]	Contingent Consideration Liability Recorded for Business Combination [Member]	Contingent Consideration Liability Recorded for Business Combination [Member]	Contingent Consideration Liability Recorded for Business Combination [Member]	Contingent Consideration Liability Recorded for Business Combination [Member]
						Other Noncurrent Liabilities [Member]	Other Noncurrent Liabilities [Member]	Other Current Liabilities [Member]	Other Current Liabilities [Member]
Fair Value Disclosures [Line Items]	'	'	'	'	'	'	'	'	'
Contingent consideration liability recorded for business combination	'	'	'	'	'	$36,100,000	$8,100,000	$13,300,000	$196,000
Additional consideration	'	'	'	'	162.5	'	'	'	'
Settlement of contingent consideration liability	'	'	5,000,000	'	'	'	'	'	'
Additional consideration paid to former stockholders based on sales of products, due	10,000,000	'	10,000,000	'	'	'	'	'	'
Transfer amount of assets or liabilities of level three	0	0	0	0	'	'	'	'	'
Transfer amount of assets or liabilities of level one	$0	$0	$0	$0	'	'	'	'	'

Fair_Value_Changes_in_Fair_Val

Fair Value - Changes in Fair Value of Level 3 Financial Assets (Detail) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
Beginning balance	$16,969
Net unrealized gain	1,291
Ending balance	$18,260

Fair_Value_Changes_in_Fair_Val1

Fair Value - Changes in Fair Value of Level 3 Contingent Consideration Liability (Detail) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013
Fair Value Disclosures [Abstract]	'
Beginning balance	$8,247
Contingent consideration liability incurred	37,499
Accretion and remeasurement	3,688
Ending balance	$49,434

Auction_Rate_Securities_Additi

Auction Rate Securities - Additional Information (Detail) (USD $)	3 Months Ended	6 Months Ended
	Dec. 31, 2013	Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items]	'	'
Contractual maturities of ARS investment	'	'Greater than five years
Auction rate securities with fair value maturing from 2015 to 2017	$13,100,000	$13,100,000
Auction rate securities with fair value maturing from 2043 to 2045	3,200,000	3,200,000
Auction rate securities with fair value having no stated maturity	2,000,000	2,000,000
ARS investments, investment grade	5,500,000	5,500,000
ARS investments, below investment grade	18,500,000	18,500,000
Minimum [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Maturity period one	'	'2015
Maturity period two	'	'2043
Maximum [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Maturity period one	'	'2017
Maturity period two	'	'2045
Auction Rate Securities [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
ARS investments redeemed at par	$0	$0

Auction_Rate_Securities_ARS_In

Auction Rate Securities - ARS Investments (Detail) (Auction Rate Securities [Member], USD $)	Dec. 31, 2013	Jun. 30, 2013
In Thousands, unless otherwise specified
Schedule of Available-for-sale Securities [Line Items]	'	'
Original Cost Basis	$24,000	$24,000
Other-than- temporary Impairment in Retained Earnings	-13,360	-13,833
New Cost Basis	10,640	10,167
Unrealized Gain/(Loss)	7,620	6,802
Fair Value	18,260	16,969
Student Loans [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Original Cost Basis	3,500	3,500
Other-than- temporary Impairment in Retained Earnings	-179	-179
New Cost Basis	3,321	3,321
Unrealized Gain/(Loss)	-142	-168
Fair Value	3,179	3,153
Credit Linked Notes [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Original Cost Basis	13,500	13,500
Other-than- temporary Impairment in Retained Earnings	-8,098	-8,571
New Cost Basis	5,402	4,929
Unrealized Gain/(Loss)	5,747	4,980
Fair Value	11,149	9,909
Preferred Stock [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Original Cost Basis	5,000	5,000
Other-than- temporary Impairment in Retained Earnings	-5,000	-5,000
New Cost Basis	0	'
Unrealized Gain/(Loss)	2,000	2,000
Fair Value	2,000	2,000
Municipals [Member]	'	'
Schedule of Available-for-sale Securities [Line Items]	'	'
Original Cost Basis	2,000	2,000
Other-than- temporary Impairment in Retained Earnings	-83	-83
New Cost Basis	1,917	1,917
Unrealized Gain/(Loss)	15	-10
Fair Value	$1,932	$1,907

Auction_Rate_Securities_ARS_In1

Auction Rate Securities - ARS Investments (Parenthetical) (Detail) (USD $)	Dec. 31, 2013	Jun. 30, 2013
Amortized Cost And Fair Value Debt Securities [Abstract]	'	'
Investment securities accretion	$669,000	$196,000

Inventories_Inventories_Detail

Inventories - Inventories (Detail) (USD $)	Dec. 31, 2013	Jun. 30, 2013
In Thousands, unless otherwise specified
Inventory Disclosure [Abstract]	'	'
Raw materials	$39,496	$38,181
Finished goods	12,250	11,767
Total Inventories	$51,746	$49,948

Other_Accrued_Liabilities_Othe

Other Accrued Liabilities - Other Accrued Liabilities (Detail) (USD $)	Dec. 31, 2013	Jun. 30, 2013
In Thousands, unless otherwise specified
Payables And Accruals [Abstract]	'	'
Customer obligations	$21,150	$16,291
Contingent consideration	13,295	196
Inventory obligations	4,500	6,333
Warranty	1,459	1,696
Other	7,260	6,921
Other accrued liabilities	$47,664	$31,437

Product_Warranties_Indemnifica1

Product Warranties, Indemnifications, and Contingencies - Additional Information (Detail)	6 Months Ended
	Dec. 31, 2013
Commitments And Contingencies Disclosure [Abstract]	'
Minimum warranty period of products	'12 months

ShareBased_Compensation_ShareB

Share-Based Compensation - Share-Based Compensation and Related Tax Benefit Recognized in Condensed Consolidated Statement of Income (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Total	$7,622	$8,006	$14,664	$16,473
Income tax benefit on share-based compensation	2,834	2,179	4,806	4,397
Cost of Revenue [Member]	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Total	262	198	516	441
Research and Development [Member]	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Total	4,241	3,879	8,168	7,790
Selling, General, and Administrative [Member]	'	'	'	'
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]	'	'	'	'
Total	$3,119	$3,929	$5,980	$8,242

ShareBased_Compensation_Balanc

Share-Based Compensation - Balance of Outstanding and Exercisable Stock Options (Detail) (USD $)	6 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'
Stock Option Awards Outstanding, Balance at June 30, 2013	6,030,287
Stock Option Awards Outstanding, Granted	290,106
Stock Option Awards Outstanding, Exercised	-1,383,245
Stock Option Awards Outstanding, Forfeited	-104,338
Stock Option Awards Outstanding, Balance at December 31, 2013	4,832,810
Stock Option Awards Outstanding, Exercisable at December 31, 2013	3,587,835
Weighted Average Exercise Price, Balance at June 30, 2013	$26.15
Weighted Average Exercise Price, Granted	$43.87
Weighted Average Exercise Price, Exercised	$25.41
Weighted Average Exercise Price, Forfeited	$29.34
Weighted Average Exercise Price, Balance at December 31, 2013	$27.36
Weighted Average Exercise Price, Exercisable at December 31, 2013	$25.50
Aggregate Intrinsic Value of Stock Option Awards, Balance at December 31, 2013	$111,499
Aggregate Intrinsic Value of Stock Option Awards, Exercisable at December 31, 2013	$89,450

ShareBased_Compensation_Stock_

Share-Based Compensation - Stock Options - Additional Information (Detail) (Stock Options [Member], USD $)	Dec. 27, 2013
Stock Options [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Aggregate intrinsic value of stock option outstanding calculated using the closing price of common stock	$50.43

ShareBased_Compensation_Balanc1

Share-Based Compensation - Balance and Aggregate Intrinsic Value of DSUs (Detail) (Deferred Stock Units [Member], USD $)	6 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013
Deferred Stock Units [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Stock Unit Awards Outstanding, Balance at June 30, 2013	1,005,435
Stock Unit Awards, Granted	377,187
Stock Unit Awards, Delivered	-250,071
Stock Unit Awards, Forfeited	-52,096
Stock Unit Awards Outstanding, Balance at December 31, 2013	1,080,455
Aggregate Intrinsic Value, Balance at December 31, 2013	$54,487

ShareBased_Compensation_Deferr

Share-Based Compensation - Deferred Stock Units - Additional Information (Detail) (Deferred Stock Units [Member], USD $)	6 Months Ended
	Dec. 31, 2013	Dec. 27, 2013
Deferred Stock Units [Member]	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'
Aggregate intrinsic value of stock option outstanding calculated using the closing price of common stock	'	$50.43
Shares withheld to meet statutory minimum tax withholding requirements	73,742	'
Shares valued withheld to meet statutory minimum tax withholding requirements	$3,200,000	'

ShareBased_Compensation_Market

Share-Based Compensation - Market Stock Units - Additional Information (Detail) (USD $)	1 Months Ended	6 Months Ended
	Nov. 30, 2012	Dec. 31, 2013	Dec. 27, 2013
Market Stock Units [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Vesting period, tranche one	'	'1 year	'
Vesting period, tranche two	'	'2 years	'
Vesting period, tranche three	'	'3 years	'
Potential payout adjustment ratio	2	'	'
Weighted average grant date fair value for the MSUs granted	'	$60.62	'
Unrecognized share-based compensation cost	'	$5,700,000	'
Unrecognized share-based compensation, period for recognition	'	'1 year 7 months 6 days	'
Aggregate intrinsic value of stock option outstanding calculated using the closing price of common stock	'	'	$50.43
Market Stock Units [Member] | Minimum [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Potential payout range	0.00%	'	'
Market Stock Units [Member] | Maximum [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
Potential payout range	200.00%	'	'
MSU Awards Outstanding [Member]	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'
SOX Index TSR percentage points	'	24.00%	'
Percentage of targeted shares, MSU grants	'	148.00%	'
Stock Unit Awards, Performance adjustment	'	10,782	'
Shares withheld to meet statutory minimum tax withholding requirements	'	15,148	'
Shares valued withheld to meet statutory minimum tax withholding requirements	'	$670,000	'

ShareBased_Compensation_Balanc2

Share-Based Compensation - Balance and Aggregate Intrinsic Value of MSUs (Detail) (MSU Awards Outstanding [Member], USD $)	6 Months Ended
In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013
MSU Awards Outstanding [Member]	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'
Stock Unit Awards Outstanding, Balance at June 30, 2013	67,400
Stock Unit Awards, Granted	80,730
Stock Unit Awards, Performance adjustment	10,782
Stock Unit Awards, Delivered	-33,249
Stock Unit Awards, Forfeited	-5,333
Stock Unit Awards Outstanding, Balance at December 31, 2013	120,330
Aggregate Intrinsic Value, Balance at December 31, 2013	$6,068

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2013
Income Tax Disclosure [Abstract]	'	'	'	'	'
Provision for income taxes	$5,215,000	$4,034,000	$17,895,000	$6,528,000	'
Effective tax rate	23.10%	26.60%	25.50%	27.60%	'
Gross unrecognized tax benefits	9,200,000	'	9,200,000	'	8,200,000
Gross unrecognized tax benefits increased during the year	'	'	984,000	'	'
Interest and penalties accrued related to unrecognized tax benefits	938,000	'	938,000	'	'
Increase in interest and penalties accrued related to unrecognized tax benefits	'	'	26,000	'	'
Minimum amount of tax refunds subject to mandatory review	'	'	$2,000,000	'	'
Extension period of federal research credit	'	'	'2 years	'	'

Segment_Customers_and_Geograph2

Segment, Customers, and Geographic Information - Additional Information (Detail)	3 Months Ended		6 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
			Product
			Segment
Segment Reporting [Abstract]	'	'	'	'
Number of segment	'	'	1	'
Number of product	'	'	2	'
Percentage from mobile product market in net revenue	65.00%	57.00%	69.00%	54.00%

Segment_Customers_and_Geograph3

Segment, Customers, and Geographic Information - Net Revenue within Geographic Areas Based on Customers' Locations (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'
Net revenue	$205,763	$143,040	$428,370	$270,081
China [Member]	'	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'
Net revenue	110,570	95,385	217,936	180,295
South Korea [Member]	'	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'
Net revenue	48,669	6,490	117,827	12,862
Taiwan [Member]	'	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'
Net revenue	34,068	20,690	66,369	36,581
Japan [Member]	'	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'
Net revenue	10,386	13,906	22,466	27,687
Other [Member]	'	'	'	'
Revenues from External Customers and Long-Lived Assets [Line Items]	'	'	'	'
Net revenue	$2,070	$6,569	$3,772	$12,656

Segment_Customers_and_Geograph4

Segment, Customers, and Geographic Information - Net Revenue from External Customers (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Revenue from External Customer [Line Items]	'	'	'	'
Net revenue	$205,763	$143,040	$428,370	$270,081
Mobile Product Applications [Member]	'	'	'	'
Revenue from External Customer [Line Items]	'	'	'	'
Net revenue	133,604	81,589	296,268	146,205
PC Product Applications [Member]	'	'	'	'
Revenue from External Customer [Line Items]	'	'	'	'
Net revenue	$72,159	$61,451	$132,102	$123,876

Segment_Customers_and_Geograph5

Segment, Customers, and Geographic Information - Major Customers' as Percentage of Net Revenue (Detail) (Sales Revenue, Net [Member])	3 Months Ended		6 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Customer A [Member]	'	'	'	'
Revenue, Major Customer [Line Items]	'	'	'	'
Percentage of net revenue	18.00%	'	20.00%	'
Percentage of net revenue, description	'	'Less than 10%	'	'Less than 10%
Customer B [Member]	'	'	'	'
Revenue, Major Customer [Line Items]	'	'	'	'
Percentage of net revenue	11.00%	'	'	'
Percentage of net revenue, description	'	'Less than 10%	'Less than 10%	'Less than 10%

Segment_Customers_and_Geograph6

Segment, Customers, and Geographic Information - Major Customer Accounts Receivable as Percentage of Accounts Receivable (Detail) (Accounts Receivable [Member])	6 Months Ended	12 Months Ended
	Dec. 31, 2013	Jun. 30, 2013
Customer A [Member]	'	'
Accounts Receivable By Major Customers [Line Items]	'	'
Percentage of net revenue	17.00%	'
Percentage of net revenue, description	'	'Less than 10%
Customer B [Member]	'	'
Accounts Receivable By Major Customers [Line Items]	'	'
Percentage of net revenue	14.00%	27.00%

Acquisition_of_Validity_Additi

Acquisition of Validity - Additional Information (Detail) (USD $)	0 Months Ended	3 Months Ended		6 Months Ended
	Nov. 07, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
	Scenario
Business Acquisition [Line Items]	'	'	'	'	'
Contingent consideration	$37,499,000	'	'	'	'
Discount rate used for discounted cash flow model	23.00%	'	'	'	'
Number of unequally weighted cash flow scenarios	3	'	'	'	'
Business combination measurement period	'	'	'	'12 months	'
Indemnification assets	1,200,000	'	'	'	'
Income tax	700,000	'	'	'	'
Service tax	500,000	'	'	'	'
Legal and consulting costs	'	'	'	2,000,000	'
Revenue cost	'	205,763,000	143,040,000	428,370,000	270,081,000
Operating loss	'	-22,078,000	-14,928,000	-69,271,000	-23,261,000
Validity Sensors, Inc [Member]	'	'	'	'	'
Business Acquisition [Line Items]	'	'	'	'	'
Acquired outstanding common and preferred shares and voting interest of Validity	100.00%	'	'	'	'
Fair value of the consideration transferred totaled	127,764,000	'	'	'	'
Additional consideration to shareholders	162,500,000	'	'	'	'
Shares issued to former Validity shareholders, Shares	1,577,559	'	'	'	'
Shares issued to former Validity shareholders, Value	70,300,000	'	'	'	'
Closing price of common stock	$44.55	'	'	'	'
Initial contingent consideration	16,300,000	'	'	'	'
Number of shares to be delivered	338,427	'	'	'	'
Transaction reference price	$48.28	'	'	'	'
Contingent consideration	37,499,000	'	'	'	'
Intangible assets	'	76,400,000	'	76,400,000	'
Acquired intangible assets	76,400,000	'	'	'	'
Revenue cost	'	'	'	4,300,000	'
Operating loss	'	'	'	2,500,000	'
Validity Sensors, Inc [Member] | In-Process Research and Development [Member]	'	'	'	'	'
Business Acquisition [Line Items]	'	'	'	'	'
Intangible assets	'	57,000,000	'	57,000,000	'
Validity Sensors, Inc [Member] | Developed Technology [Member]	'	'	'	'	'
Business Acquisition [Line Items]	'	'	'	'	'
Acquired intangible assets	'	18,600,000	'	18,600,000	'
Validity Sensors, Inc [Member] | Backlog [Member]	'	'	'	'	'
Business Acquisition [Line Items]	'	'	'	'	'
Acquired intangible assets	'	$750,000	'	$750,000	'
Validity Sensors, Inc [Member] | Minimum [Member]	'	'	'	'	'
Business Acquisition [Line Items]	'	'	'	'	'
Minimum value of consideration transferred to the former Validity shareholders	40.00%	'	'	'	'
Validity Sensors, Inc [Member] | Minimum [Member] | In-Process Research and Development [Member]	'	'	'	'	'
Business Acquisition [Line Items]	'	'	'	'	'
Anticipated completion period of in-process research and development projects	'	'6 months	'	'	'
Validity Sensors, Inc [Member] | Minimum [Member] | Developed Technology [Member]	'	'	'	'	'
Business Acquisition [Line Items]	'	'	'	'	'
Estimated useful life	'	'2 years	'	'	'
Validity Sensors, Inc [Member] | Maximum [Member] | In-Process Research and Development [Member]	'	'	'	'	'
Business Acquisition [Line Items]	'	'	'	'	'
Anticipated completion period of in-process research and development projects	'	'12 months	'	'	'
Validity Sensors, Inc [Member] | Maximum [Member] | Developed Technology [Member]	'	'	'	'	'
Business Acquisition [Line Items]	'	'	'	'	'
Estimated useful life	'	'3 years	'	'	'

Acquisition_of_Validity_Summar

Acquisition of Validity - Summary of Fair Value of Consideration (Detail) (USD $)	0 Months Ended
In Thousands, unless otherwise specified	Nov. 07, 2013
Business Acquisition [Line Items]	'
Contingent consideration	$37,499
Validity Sensors, Inc [Member]	'
Business Acquisition [Line Items]	'
Cash	19,985
Shares issued	70,280
Contingent consideration	37,499
Total	$127,764

Acquisition_of_Validity_Summar1

Acquisition of Validity - Summary of Estimated Fair Values of Assets Acquired and Liabilities Assumed (Detail) (USD $)	Dec. 31, 2013	Jun. 30, 2013	Nov. 07, 2013
In Thousands, unless otherwise specified			Validity Sensors, Inc [Member]
Business Acquisition [Line Items]	'	'	'
Cash	'	'	$365
Accounts receivable	'	'	3,840
Inventory	'	'	2,154
Prepaid expenses and other	'	'	984
Property and equipment	'	'	326
Deferred tax assets	'	'	13,602
Acquired intangible assets	'	'	76,400
Other assets	'	'	1,283
Total identifiable assets acquired	'	'	98,954
Accounts payable	'	'	2,141
Accrued liabilities	'	'	1,497
Non-current deferred tax liabilities	'	'	5,327
Non-current taxes payable	'	'	700
Other non-current accrued liabilities	'	'	500
Net identifiable assets acquired	'	'	88,789
Goodwill	59,670	20,695	38,975
Net assets acquired	'	'	$127,764

Acquisition_of_Validity_Summar2

Acquisition of Validity - Summary of Financial Information Presents Combined Results of Operations for Acquisition (Detail) (Validity Sensors, Inc [Member], USD $)	3 Months Ended		6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Validity Sensors, Inc [Member]	'	'	'	'
Business Acquisition [Line Items]	'	'	'	'
Revenue	$206,844	$146,869	$436,253	$276,924
Net income	$16,354	$4,732	$45,785	$5,807
Net income per share-diluted	$0.44	$0.14	$1.25	$0.16

Acquisition_of_Validity_Pro_Fo

Acquisition of Validity - Pro Forma Adjustments Used to Arrive at Pro Forma Net Income (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Business Combinations [Abstract]	'	'	'	'
Buyer transaction costs	$969	'	$2,000	'
Seller transaction costs	'	'	517	'
Inventory adjustment	575	'	575	'
Share-based compensation	140	87	280	174
Intangible amortization	-2,060	-2,060	-4,121	-3,497
Deferred compensation	49	-19	31	-37
Total	($327)	($1,992)	($718)	($3,360)

Acquired_Intangibles_Summary_o

Acquired Intangibles - Summary of Life, Gross Carrying Value of Purchased Intangible Assets, and Related Accumulated Amortization (Detail) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Jun. 30, 2013
Finite-Lived Intangible Assets [Line Items]	'	'
Intangible assets	$90,535	$14,135
Accumulated amortization	-3,144	-1,025
Acquired intangibles, net	87,391	13,110
In-process Research and Development [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Intangible assets	57,000	8,900
Finger Print Developed Technology [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Intangible assets	18,650	'
Thintouch Developed Technology [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Intangible assets	8,900	'
Useful Life	'7 years	'
Customer Relationships [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Intangible assets	3,800	3,800
Useful Life	'5 years	'
Licensed Technology and Other [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Intangible assets	1,335	1,335
Useful Life	'5 years	'
Backlog [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Intangible assets	750	'
Patents [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Intangible assets	$100	$100
Useful Life	'5 years	'
Minimum [Member] | Finger Print Developed Technology [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Useful Life	'2 years	'
Maximum [Member] | Finger Print Developed Technology [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Useful Life	'3 years	'
Maximum [Member] | Backlog [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Useful Life	'1 year	'

Acquired_Intangibles_Additiona

Acquired Intangibles - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Goodwill And Intangible Assets Disclosure [Abstract]	'	'	'	'
Total amortization expense for intangible assets	$1,900	$261	$2,119	$501

Acquired_Intangibles_Schedule_

Acquired Intangibles - Schedule of Expected Annual Aggregate Amortization Expense (Detail) (USD $)	Dec. 31, 2013	Jun. 30, 2013
In Thousands, unless otherwise specified
Goodwill And Intangible Assets Disclosure [Abstract]	'	'
Remainder of 2014	$5,280	'
2015	10,560	'
2016	7,016	'
2017	3,221	'
2018	1,293	'
Thereafter	3,021	'
To be determined	57,000	'
Acquired intangibles, net	$87,391	$13,110

Subsequent_Events_Additional_I

Subsequent Events - Additional Information (Detail) (Subsequent Event [Member], USD $)	0 Months Ended
In Millions, unless otherwise specified	Feb. 03, 2014	Jan. 22, 2014	Jan. 02, 2014
		Buildings	D
		sqft
		acre
Subsequent Event [Member]	'	'	'
Subsequent Event [Line Items]	'	'	'
Convertible senior subordinated notes due 2024	'	'	0.75%
Conversion period description	'	'	'20 of the last 30 consecutive trading days ending on the last trading day of the calendar quarter ended December 31, 2013
Conversion trigger period	'	'	20
Consecutive trading days	'	'	'30 days
Area of land acquired	'	5.35	'
Number of buildings	'	2	'
Area of office buildings acquired	'	80,000	'
Cost of office building	'	$10.10	'
Number of retrofit building	'	1	'
Office area to be retrofitted	'	51,000	'
Date of redemption	2-Apr-14	'	'
Percent of principal amount to be redeemed	100.00%	'	'