Super Micro Computer (SMCI) 10-Q 10 May 17 2017 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Mar. 31, 2017	Apr. 30, 2017
Document And Entity Information [Abstract]
Entity Registrant Name	Super Micro Computer, Inc.
Entity Central Index Key	1,375,365
Current Fiscal Year End Date	--06-30
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Mar. 31, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding		48,692,992

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2017	Jun. 30, 2016
Current assets:
Cash and cash equivalents	$ 107,779	$ 180,964
Accounts receivable, net of allowances of $2,957 and $2,721 at March 31, 2017 and June 30, 2016, respectively (including amounts receivable from a related party of $7,614 and $4,678 at March 31, 2017 and June 30, 2016, respectively)	391,334	288,941
Inventory	642,314	448,980
Prepaid income taxes	1,795	5,682
Prepaid expenses and other current assets	13,485	13,435
Total current assets	1,156,707	938,002
Long-term investments	2,643	2,643
Property, plant and equipment, net	195,553	187,949
Deferred income taxes-noncurrent	35,513	28,460
Other assets	14,040	8,546
Total assets	1,404,456	1,165,600
Current liabilities:
Accounts payable (including amounts due to a related party of $50,407 and $39,152 at March 31, 2017 and June 30, 2016, respectively)	348,733	249,239
Accrued liabilities	70,893	55,618
Income taxes payable	1,646	5,172
Short-term debt and current portion of long-term debt, net of debt issuance costs	113,260	53,589
Total current liabilities	534,532	363,618
Long-term debt, net of current portion and debt issuance costs	32,251	40,000
Other long-term liabilities	60,647	40,603
Total liabilities	627,430	444,221
Commitments and contingencies (Note 9)
Stockholders’ equity:
Common stock, Par Value $.001; Authorized shares 100,000,000; Issued shares: 50,012,020 and 48,999,717 at March 31, 2017 and June 30, 2016, respectively	299,256	277,339
Treasury stock (at cost), 1,333,125 and 445,028 shares at March 31, 2017 and June 30, 2016, respectively	(20,491)	(2,030)
Accumulated other comprehensive loss	(70)	(85)
Retained earnings	498,165	445,971
Total Super Micro Computer, Inc. stockholders’ equity	776,860	721,195
Noncontrolling interest	166	184
Total stockholders’ equity	777,026	721,379
Total liabilities and stockholders’ equity	$ 1,404,456	$ 1,165,600

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2017	Jun. 30, 2016
Current assets:
Accounts receivable, allowances	$ 2,957	$ 2,721
Accounts receivable, related party	7,614	4,678
Current liabilities:
Accounts payable, related party	$ 50,407	$ 39,152
Stockholders' Equity
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	50,012,020	48,999,717
Treasury stock, shares (in shares)	1,333,125	445,028

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Income Statement [Abstract]
Net sales (including related party sales of $4,069 and $4,413 in the three months ended March 31, 2017 and 2016, respectively, and $14,414 and $12,125 in the nine months ended March 31, 2017 and 2016, respectively)	$ 631,124	$ 532,721	$ 1,812,046	$ 1,691,303
Cost of sales (including related party purchases of $62,378 and $55,133 in the three months ended March 31, 2017 and 2016, respectively, and $177,513 and $185,845 in the nine months ended March 31, 2017 and 2016, respectively)	542,798	453,569	1,550,278	1,433,574
Gross profit	88,326	79,152	261,768	257,729
Operating expenses:
Research and development	35,870	31,256	103,094	89,846
Sales and marketing	17,167	14,467	51,236	45,177
General and administrative	12,874	8,984	33,058	27,695
Total operating expenses	65,911	54,707	187,388	162,718
Income from operations	22,415	24,445	74,380	95,011
Interest and other income (expense), net	(51)	20	23	131
Interest expense	(558)	(417)	(1,385)	(1,141)
Income before income tax provision	21,806	24,048	73,018	94,001
Income tax provision	5,140	7,386	20,824	28,951
Net income	$ 16,666	$ 16,662	$ 52,194	$ 65,050
Net income per common share:
Basic (in dollars per share)	$ 0.34	$ 0.35	$ 1.08	$ 1.36
Diluted (in dollars per share)	$ 0.32	$ 0.32	$ 1.01	$ 1.26
Weighted-average shares used in calculation of net income per common share:
Basic (in shares)	48,445	48,047	48,243	47,737
Diluted (in shares)	51,918	52,238	51,579	51,637

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Operations (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Income Statement [Abstract]
Net sales, related party sales	$ 4,069	$ 4,413	$ 14,414	$ 12,125
Cost of sales, related party purchases	$ 62,378	$ 55,133	$ 177,513	$ 185,845

Condensed Consolidated Stateme6

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 16,666	$ 16,662	$ 52,194	$ 65,050
Other comprehensive income, net of tax:
Foreign currency translation gains (losses)	13	4	15	(12)
Unrealized gains (losses) on investments	0	0	0	0
Total other comprehensive gains (losses)	13	4	15	(12)
Comprehensive income	$ 16,679	$ 16,666	$ 52,209	$ 65,038

Condensed Consolidated Stateme7

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
OPERATING ACTIVITIES:
Net income	$ 52,194	$ 65,050
Reconciliation of net income to net cash provided by (used in) operating activities:
Depreciation and amortization	11,768	9,538
Stock-based compensation expense	14,046	11,768
Excess tax benefits from stock-based compensation	(1,893)	(2,506)
Allowance for doubtful accounts	611	1,014
Provision for inventory	8,162	6,026
Exchange loss (gain)	1,331	(1,492)
Deferred income taxes	(6,998)	(2,657)
Changes in operating assets and liabilities:
Accounts receivable, net (including changes in related party balances of $(2,936) and $7,152 during the nine months ended March 31, 2017 and 2016, respectively)	(103,004)	35,875
Inventory	(201,496)	(21,809)
Prepaid expenses and other assets	1,800	(3,756)
Accounts payable (including changes in related party balances of $11,255 and $(13,658) during the nine months ended March 31, 2017 and 2016, respectively)	103,767	(23,176)
Income taxes payable, net	1,511	(8,583)
Accrued liabilities	13,564	5,701
Other long-term liabilities	14,365	21,833
Net cash provided by (used in) operating activities	(90,272)	92,826
INVESTING ACTIVITIES:
Purchases of property, plant and equipment	(23,270)	(25,120)
Change in restricted cash	(286)	(1,018)
Net cash used in investing activities	(23,556)	(26,138)
FINANCING ACTIVITIES:
Proceeds from debt, net of debt issuance costs	170,416	24,100
Repayment of debt	(119,852)	(23,700)
Payment to acquire treasury stock	(18,461)	0
Proceeds from exercise of stock options	9,123	10,661
Excess tax benefits from stock-based compensation	1,893	2,506
Minimum tax withholding paid on behalf of employees for restricted stock units	(2,476)	(1,108)
Payment of obligations under capital leases	(184)	(133)
Advances under receivable financing arrangements	4	835
Net cash provided by financing activities	40,463	13,161
Effect of exchange rate fluctuations on cash	180	1,115
Net increase (decrease) in cash and cash equivalents	(73,185)	80,964
Cash and cash equivalents at beginning of period	180,964	95,442
Cash and cash equivalents at end of period	107,779	176,406
Supplemental disclosure of cash flow information:
Cash paid for interest	1,335	1,136
Cash paid for taxes, net of refunds	24,958	34,562
Non-cash investing and financing activities:
Equipment purchased under capital leases	314	299
Accrued costs for property, plant and equipment purchases	$ 4,833	$ 7,316

Condensed Consolidated Stateme8

Condensed Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Thousands	9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Net cash provided by (used in) operating activities
Accounts receivable, changes in related party balances	$ (2,936)	$ 7,152
Accounts payable, changes in related party balances	$ 11,255	$ (13,658)

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Mar. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Organization Super Micro Computer, Inc. (“Super Micro Computer”) was incorporated in 1993. Super Micro Computer is a global leader in server technology and green computing innovation. Super Micro Computer develops and provides high performance server solutions based upon an innovative, modular and open-standard architecture. Super Micro Computer has operations primarily in San Jose, California, the Netherlands, Taiwan, China and Japan. Basis of Presentation The unaudited condensed consolidated financial statements reflect the condensed consolidated balance sheets, results of operations, comprehensive income and cash flows of Super Micro Computer, Inc. and its wholly-owned subsidiaries (collectively, the “Company”). All intercompany accounts and transactions have been eliminated in consolidation. The unaudited condensed consolidated financial statements included herein have been prepared by the Company pursuant to the rules and regulations of the United States Securities and Exchange Commission (“SEC”) and include the accounts of the Company and its wholly-owned subsidiaries. Certain information and footnote disclosures normally included in financial statements prepared in accordance with United States generally accepted accounting principles have been condensed or omitted pursuant to such rules and regulations. These condensed consolidated financial statements should be read in conjunction with the Company’s audited consolidated financial statements for the fiscal year ended June 30, 2016 included in its Annual Report on Form 10-K, as filed with the SEC (the “Annual Report”). The unaudited condensed consolidated financial statements included herein reflect all adjustments, including normal recurring adjustments, which are, in the opinion of management, necessary for a fair presentation of the consolidated financial position, results of operations and cash flows for the periods presented. The condensed consolidated results of operations for the three and nine months ended March 31, 2017 are not necessarily indicative of the results that may be expected for future quarters or for the fiscal year ending June 30, 2017 . The Company consolidates its investment in Super Micro Asia Science and Technology Park, Inc. as it is a variable interest entity and the Company is the primary beneficiary. The noncontrolling interest is presented as a separate component from the Company's equity in the equity section of the condensed consolidated balance sheets. Net income attributable to the noncontrolling interest is not presented separately in the condensed consolidated statements of operations and is included in the general and administrative expenses as the amount is not material for any of the fiscal periods presented. Fair Value of Financial Instruments The Company accounts for certain assets and liabilities at fair value. Accounts receivable and accounts payable are carried at cost, which approximates fair value due to the short maturity of these instruments. Cash equivalents and long-term investments are carried at fair value. Short-term and long-term debt is carried at amortized cost, which approximates its fair value based on borrowing rates currently available to the Company for loans with similar terms. The hierarchy below lists three levels of fair value based on the extent to which inputs used in measuring fair value are observable in the market. The Company categorizes each of its fair value measurements in one of these three levels based on the lowest level input that is significant to the fair value measurement in its entirety. These levels are: • Level 1 - Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities; • Level 2 - Quoted prices in markets that are not active or financial instruments for which all significant inputs are observable, either directly or indirectly; and • Level 3 - Prices or valuations that require inputs that are both significant to the fair value measurement and unobservable. Net Income Per Common Share The Company's basic net income per share is computed by dividing net income by the weighted-average number of shares of common stock outstanding during the period. Diluted net income per share is computed by dividing net income by the weighted-average number of shares of common stock outstanding during the period increased to include the number of additional shares of common stock that would have been outstanding if the potentially dilutive securities had been issued. Potentially dilutive securities include outstanding stock options and unvested restricted stock units (“RSUs”). Under the treasury stock method, an increase in the fair market value of the Company’s common stock results in a greater dilutive effect from outstanding stock options and RSUs. Additionally, the exercise of employee stock options and the vesting of restricted stock units results in a further dilutive effect on net income per share. Recently Issued Accounting Pronouncements In May 2014, the Financial Accounting Standards Board (“FASB”) issued new accounting guidance, Revenue from Contracts with Customers , that replaces all current U.S. GAAP guidance on revenue, eliminates all industry-specific guidance and provides a unified model in determining when and how revenue is recognized. The core principle is that a company should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. Further, in March 2016, the FASB issued an amendment to the accounting guidance, Revenue from Contracts with Customers: Principal versus Agent Considerations (Reporting Revenue Gross versus Net) , which clarifies the implementation guidance for principal versus agent considerations. In April 2016, the FASB issued an amendment to the accounting guidance, Revenue from Contracts with Customers: Identifying Performance Obligations and Licensing , which clarifies the guidance related to identifying performance obligations and accounting for licenses of intellectual property. In May 2016, the FASB issued an amendment to the accounting guidance, Revenue from Contracts with Customers: Narrow-Scope Improvements and Practical Expedients , which clarifies the guidance related to collectability and non-cash consideration, as well as provides practical expedients for the transition to the new accounting guidance. This guidance can be applied either retrospectively or as a cumulative-effect adjustment as of the date of adoption. Early adoption is permitted for annual periods beginning after December 15, 2016. The Company intends to apply the new standard starting from the first quarter of fiscal year 2019. Based on the Company's preliminary plan, the Company intends to adopt the new standard using the modified retrospective method. The Company’s decision was based on a number of factors such as the significance of the impact of the new standard on the Company’s financial results, system readiness, including that of software procured from third-party providers, and the Company’s ability to accumulate and analyze the information necessary to assess the cumulative effect of the new standard through July 1, 2018. However, the Company continues to assess this in connection with its entire project plan. The Company expects the implementation of the new standard to impact the recognition of its revenue as follows: • Substantially all of the Company's current revenue is from the sale of hardware products. The Company does not expect any material changes to the timing or amount of revenue for these types of sales under the new standard. • For extended warranty and on-site services, the Company is still assessing the impact and timing to revenue from the implementation of the new standard. However, the Company does not currently expect the new standard to have a material impact on its revenue for these types of arrangements. • For software and intellectual property licenses, the Company is still assessing the impact and timing to revenue from the implementation of the new standard. However, the Company does not currently expect the new standard to have a material impact on its revenue for these types of arrangements. • The Company's revenue disclosures are expected to expand. The Company is still assessing the impact to its processes and systems configuration from the implementation of the new revenue standard and does not currently expect any significant changes to its other accounting policies from the adoption of the new revenue standard. The Company's implementation efforts are progressing as planned. In April 2015, the FASB issued an amendment to the accounting guidance, Interest-Imputation of Interest: Simplifying the Presentation of Debt Issuance Costs. This amendment requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. In August 2015, the FASB issued an amendment to the accounting guidance, Presentation and Subsequent Measurement of Debt Issuance Costs Associated with Line-of-Credit Arrangements. This amendment clarifies that an entity may defer and present debt issuance costs associated with line-of-credit arrangements as an asset and subsequently amortize the deferred debt issuance costs ratably over the term of the line-of-credit arrangement, regardless of whether there are any outstanding borrowings on the line-of-credit arrangement. These amendments should be applied retrospectively to all prior periods presented in the financial statements. The Company adopted these amendments in the first quarter of fiscal year 2017. There was no material impact on its financial statement disclosures, results of operations and financial position. In July 2015, the FASB issued an amendment to the accounting guidance, Inventory: Simplifying the Measurement of Inventory . The amendment requires entities to measure inventory at the lower of cost and net realizable value thereby simplifying the current guidance under which an entity must measure inventory at the lower of cost or market. The amendment is effective for the Company on July 1, 2018. The Company is currently evaluating the effect the guidance will have on its financial statement disclosures, results of operations and financial position. In February 2016, the FASB issued an amendment to the accounting guidance, Leases. The amendment will supersede the existing lease guidance, including on-balance sheet recognition of operating leases for lessees. This amendment should be applied using a modified retrospective approach and is effective for the Company on July 1, 2018. Early adoption is permitted. The Company is currently evaluating the effect the guidance will have on its financial statement disclosures, results of operations and financial position. In March 2016, the FASB issued new accounting guidance, Compensation—Stock Compensation: Improvements to Employee Share-Based Payment Accounting on the accounting for certain aspects of share-based payment to employees, including the accounting for income taxes, forfeitures, and statutory tax withholding requirements as well as classification in the statement of cash flows. Early adoption is permitted for any interim or annual periods. This guidance is effective for the Company on July 1, 2017. The Company is currently evaluating the effect the guidance will have on its financial statement disclosures, results of operations and financial position. In August 2016, the FASB issued an amendment to the accounting guidance, Statement of Cash Flows: Classification of Certain Cash Receipts and Cash Payments. This amendment consists of eight provisions that provide guidance on the classification of certain cash receipts and cash payments. If practicable, this amendment should be applied using a retrospective transition method to each period presented. For the provisions that are impracticable to apply retrospectively, those provisions may be applied prospectively as of the earliest date practicable. This amendment is effective for the Company on July 1, 2019. Early adoption is permitted. The Company is currently evaluating the effect the guidance will have on its financial statement disclosures, results of operations and financial position. In October 2016, the FASB issued an amendment to the accounting guidance, Intra-Entity Transfers of Assets Other Than Inventory . This amendment simplifies the accounting for income tax consequences of intra-entity transfers of assets other than inventory by requiring recognition of current and deferred income tax consequences when such transfers occur. This amendment is effective for the Company on July 1, 2018. Early adoption is permitted. The Company is currently evaluating the effect the guidance will have on its financial statement disclosure, results of operations and financial position. In November 2016, the FASB issued an amendment to the accounting guidance, Statement of Cash Flows: Restricted Cash. This amendment addresses presentations of total cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. This amendment is effective for the Company on July 1, 2018. Early adoption is permitted. The Company does not expect the impact of adopting this guidance to be significant.

Stock-based Compensation and St

Stock-based Compensation and Stockholders' Equity	9 Months Ended
	Mar. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-based Compensation and Stockholders' Equity	Stock-based Compensation and Stockholders’ Equity Share Repurchase Program In July 2016, the Company’s Board of Directors adopted a program to repurchase from time to time at management’s discretion up to $100,000,000 of the Company’s common stock in the open market or in private transactions during the next twelve months at prevailing market prices. Repurchases will be made under the program using the Company’s own cash resources. This share repurchase program does not obligate the Company to acquire any particular amount of common stock, and it may be suspended at any time at the Company’s discretion. During the three months ended March 31, 2017 , the Company did not purchase any shares of its common stock in the open market. During the nine months ended March 31, 2017 , the Company purchased 888,097 shares of the Company's common stock in the open market at a weighted average price of $20.79 for $18,461,000 . Equity Incentive Plan In January 2016, the Board of Directors approved the 2016 Equity Incentive Plan (the "2016 Plan") and reserved for issuance 4,700,000 shares of common stock for awards of stock options, stock appreciation rights, restricted stock, RSUs and other share-based awards. The 2016 Plan was approved by the stockholders of the Company and became effective on March 8, 2016. As of such date, 8,696,444 shares of common stock were reserved for outstanding awards under the Company's 2006 Equity Incentive Plan (the "2006" Plan). Such awards remained outstanding under the 2006 Plan following the adoption of the 2016 Plan, although no further awards will be granted under the 2006 Plan. Up to 2,800,000 shares subject to awards that remained outstanding under the 2006 Plan but that are forfeited in the future will become available for use under the 2016 Plan. In addition, 1,153,412 shares of common stock originally reserved for issuance under the 2006 Plan were cancelled upon the adoption of the 2016 Plan. Under the 2016 Plan, the exercise price per share for incentive stock options granted to employees owning shares representing more than 10% of the Company at the time of grant cannot be less than 110% of the fair value of the underlying share on grant date. Nonqualified stock options and incentive stock options granted to all other persons shall be granted at a price not less than 100% of the fair value of the underlying share on grant date. Options generally expire ten years after the date of grant. Stock options and RSUs generally vest over four years ; 25% at the end of one year and one sixteenth per quarter thereafter. As of March 31, 2017 , the Company had 3,156,856 shares available for future issuance under the 2016 Plan. Determining Fair Value The Company's fair value of RSUs is based on the closing market price of the Company's common stock on the date of grant. The Company estimates the fair value of stock options granted using the Black-Scholes-option-pricing formula and a single option award approach. This fair value is then amortized ratably over the requisite service periods of the awards, which is generally the vesting period. Expected Term—The Company’s expected term represents the period that the Company’s share-based awards are expected to be outstanding and was determined based on a combination of the Company's peer group and the Company's historical experience. Expected Volatility—Expected volatility is based on a combination of the Company's implied and historical volatility. Expected Dividend—The Black-Scholes valuation model calls for a single expected dividend yield as an input and the Company has no plans to pay dividends. Risk-Free Interest Rate—The risk-free interest rate used in the Black-Scholes valuation method is based on the United States Treasury zero coupon issues in effect at the time of grant for periods corresponding with the expected term of option. Estimated Forfeitures—The estimated forfeiture rate is based on the Company’s historical forfeiture rates and the estimate is revised in subsequent periods if actual forfeitures differ from the estimate. The fair value of stock option grants for the three and nine months ended March 31, 2017 and 2016 was estimated on the date of grant using the Black-Scholes option pricing model with the following assumptions: Three Months Ended Nine Months Ended 2017 2016 2017 2016 Risk-free interest rate 2.03 % 1.38% - 1.48% 1.12% - 2.03% 1.38% - 1.57% Expected term 5.31 years 5.31 years 5.31 - 5.38 years 5.31 - 5.33 years Dividend yield — % — % — % — % Volatility 43.84% - 49.12% 49.09% - 50.89% 43.84% - 49.64% 47.06% - 50.89% Weighted-average fair value $ 12.72 $ 12.99 $ 10.90 $ 12.04 The following table shows total stock-based compensation expense included in the condensed consolidated statements of operations for the three and nine months ended March 31, 2017 and 2016 (in thousands): Three Months Ended Nine Months Ended 2017 2016 2017 2016 Cost of sales $ 334 $ 294 $ 968 $ 792 Research and development 3,069 2,549 8,989 7,423 Sales and marketing 541 491 1,539 1,330 General and administrative 889 552 2,550 2,223 Stock-based compensation expense before taxes 4,833 3,886 14,046 11,768 Income tax impact (1,549 ) (1,191 ) (4,270 ) (3,290 ) Stock-based compensation expense, net $ 3,284 $ 2,695 $ 9,776 $ 8,478 The cash flows resulting from the tax benefits for tax deductions resulting from the exercise of stock options and vesting of RSUs in excess of the compensation expense recorded for those share-based awards (excess tax benefits) issued or modified since July 1, 2006 are classified as cash from financing activities. The Company had $1,224,000 and $3,548,000 of excess tax benefits recorded in additional paid-in capital in the nine months ended March 31, 2017 and March 31, 2016 , respectively. The Company had excess tax benefits classified as cash provided by financing activities of $1,893,000 and $2,506,000 in the nine months ended March 31, 2017 and 2016 , respectively, for share-based awards issued since July 1, 2006. As of March 31, 2017 , the Company’s total unrecognized compensation cost related to non-vested share-based awards granted to employees and non-employee directors was $39,249,000 , which will be recognized over a weighted-average vesting period of approximately 2.40 years. Stock Option Activity The following table summarizes stock option activity during the nine months ended March 31, 2017 under all plans: Options Outstanding Weighted Average Exercise Price per Share Weighted Average Remaining Contractual Term (in Years) Aggregate Intrinsic Value (in thousands) Balance as of June 30, 2016 (7,495,131 shares exercisable at weighted average exercise price of $13.35 per share) 8,960,867 $ 14.88 Granted (weighted average fair value of $10.90) 341,400 $ 24.11 Exercised (827,875 ) $ 11.02 Forfeited (24,011 ) $ 20.76 Balance as of March 31, 2017 8,450,381 $ 15.62 4.90 $ 86,351 Options vested and expected to vest at March 31, 2017 8,378,933 $ 15.53 4.86 $ 86,238 Options vested and exercisable at March 31, 2017 7,364,413 $ 14.29 4.41 $ 83,637 The total pretax intrinsic value of options exercised was $5,237,000 and $11,312,000 during the three and nine months ended March 31, 2017 , respectively, and $11,637,000 and $16,491,000 during the three and nine months ended March 31, 2016 , respectively. RSU Activity The Company grants RSUs to certain employees as part of its regular employee equity compensation review program as well as to selected new hires. RSUs are share awards that entitle the holder to receive freely tradable shares of the Company's common stock upon vesting and settlement. The following table summarizes RSUs activity during the nine months ended March 31, 2017 under all plans: RSUs Outstanding Weighted Average Grant-Date Fair Value per Share Aggregate Intrinsic Value (in thousands) Balance as of June 30, 2016 926,983 $ 30.23 Granted 613,310 $ 23.42 Released (285,037 ) $ 27.45 Forfeited (81,869 ) $ 26.67 Balance as of March 31, 2017 1,173,387 $ 27.59 $ 29,745 The total pretax intrinsic value of RSUs vested was $2,620,000 and $7,015,000 during the three and nine months ended March 31, 2017 , respectively, and $1,579,000 and $2,937,000 during the three and nine months ended March 31, 2016 , respectively. In the three and nine months ended March 31, 2017 , upon vesting, 97,392 and 285,037 shares of RSUs were partially net share-settled such that the Company withheld 34,727 and 100,609 shares with value equivalent to the employees' minimum statutory obligation for the applicable income and other employment taxes, and remitted the cash to the appropriate taxing authorities, respectively. In the three and nine months ended March 31, 2016 , upon vesting, 50,912 and 102,918 shares of RSUs were partially net share-settled such that the Company withheld 19,480 and 38,801 shares with value equivalent to the employees' minimum statutory obligation for the applicable income and other employment taxes, and remitted the cash to the appropriate taxing authorities, respectively. The total shares withheld were based on the value of the RSUs on their respective vesting dates as determined by the Company's closing stock price. Total payments for the employees' tax obligations to taxing authorities were $934,000 and $2,476,000 during the three and nine months ended March 31, 2017 , respectively, and $604,000 and $1,108,000 during the three and nine months ended March 31, 2016 , respectively, and are reflected as a financing activity within the condensed consolidated statements of cash flows. These net-share settlements had the effect of share repurchases by the Company as they reduced and retired the number of shares that would have otherwise been issued as a result of the vesting and did not represent an expense to the Company. Pursuant to the terms of the 2016 Plan, shares withheld in connection with net-share settlements are returned to the 2016 Plan and are available for future grants under the 2016 Plan.

Net Income Per Share

Net Income Per Share	9 Months Ended
	Mar. 31, 2017
Earnings Per Share [Abstract]
Net Income Per Share	Net Income Per Share The following table shows the computation of basic and diluted net income per share for the three and nine months ended March 31, 2017 and 2016 (in thousands, except per share amounts): Three Months Ended Nine Months Ended 2017 2016 2017 2016 Numerator: Net income $ 16,666 $ 16,662 $ 52,194 $ 65,050 Denominator: Weighted-average shares outstanding 48,445 48,047 48,243 47,737 Effect of dilutive securities 3,473 4,191 3,336 3,900 Weighted-average diluted shares 51,918 52,238 51,579 51,637 Basic net income per share $ 0.34 $ 0.35 $ 1.08 $ 1.36 Diluted net income per share $ 0.32 $ 0.32 $ 1.01 $ 1.26 For the three and nine months ended March 31, 2017 and 2016 , the Company had stock options and RSUs outstanding that could potentially dilute basic earnings per share in the future, but were excluded from the computation of diluted net income per share in the periods presented, as their effect would have been anti-dilutive. The anti-dilutive common share equivalents resulting from outstanding share-based awards were 1,675,000 and 1,594,000 for the three and nine months ended March 31, 2017 , respectively, and 1,287,000 and 1,235,000 for the three and nine months ended March 31, 2016 , respectively.

Balance Sheet Components

Balance Sheet Components	9 Months Ended
	Mar. 31, 2017
Balance Sheet Related Disclosures [Abstract]
Balance Sheet Components	Balance Sheet Components The following tables provide details of the selected balance sheet items (in thousands): Inventory: March 31, June 30, Finished goods $ 475,031 $ 351,209 Work in process 63,207 19,105 Purchased parts and raw materials 104,076 78,666 Total inventory $ 642,314 $ 448,980 The Company recorded a provision for lower of cost or market and excess and obsolete inventory totaling $1,771,000 and $8,162,000 in the three and nine months ended March 31, 2017 , respectively, and $2,246,000 and $6,026,000 in the three and nine months ended March 31, 2016 , respectively. Property, Plant, and Equipment: March 31, June 30, Land $ 70,484 $ 70,454 Buildings 71,665 71,665 Building and leasehold improvements 14,616 10,941 Buildings construction in progress (1) 22,507 15,803 Machinery and equipment 58,577 53,282 Furniture and fixtures 13,306 10,364 Purchased software 14,276 13,920 Purchased software construction in progress 435 532 265,866 246,961 Accumulated depreciation and amortization (70,313 ) (59,012 ) Property, plant and equipment, net $ 195,553 $ 187,949 (1) In connection with the purchase of property located in San Jose, California for the Company's Green Computing Park, the Company continues to engage several contractors for the development and construction of improvements on the property. Other Assets: March 31, June 30, Long-term deferred service costs $ 2,742 $ 3,498 Restricted cash 2,190 1,851 Investments in privately held companies 8,124 1,411 Deposits 258 910 Prepaid royalty license 561 748 Others 165 128 Total other assets $ 14,040 $ 8,546 Accrued Liabilities: March 31, June 30, Accrued payroll and related expenses $ 18,403 $ 16,015 Customer deposits 8,778 6,265 Accrued warranty costs 5,805 5,816 Accrued cooperative marketing expenses 7,832 7,300 Deferred revenue (1) 24,038 13,418 Others 6,037 6,804 Total accrued liabilities $ 70,893 $ 55,618 (1) As of March 31, 2017 and June 30, 2016 , deferred revenue consist primarily of deferred extended warranty and on-site service revenue of $21,281,000 and $12,746,000 , respectively. Other Long-term Liabilities: March 31, June 30, Deferred revenue-net of current portion (1) $ 40,666 $ 21,940 Accrued unrecognized tax benefits including related interests and penalties-net of current portion 17,329 16,056 Accrued warranty costs-net of current portion 1,304 1,313 Others 1,348 1,294 Total other long-term liabilities $ 60,647 $ 40,603 (1) As of March 31, 2017 and June 30, 2016 , deferred revenue-net of current portion consist primarily of deferred extended warranty and on-site service revenue of $34,017,000 and $21,265,000 , respectively. Product Warranties: Three Months Ended Nine Months Ended 2017 2016 2017 2016 Balance, beginning of period $ 6,925 $ 7,777 $ 7,129 $ 7,700 Provision for warranty 5,332 3,685 15,030 12,229 Costs charged to accrual (5,362 ) (3,872 ) (14,919 ) (10,545 ) Change in estimated liability for pre-existing warranties 214 (460 ) (131 ) (2,254 ) Balance, end of period 7,109 7,130 7,109 7,130 Current portion (5,805 ) (5,634 ) (5,805 ) (5,634 ) Long-term portion $ 1,304 $ 1,496 $ 1,304 $ 1,496

Fair Value Disclosure

Fair Value Disclosure	9 Months Ended
	Mar. 31, 2017
Fair Value Disclosures [Abstract]
Fair Value Disclosure	Fair Value Disclosure The financial assets of the Company measured at fair value on a recurring basis are included in cash equivalents and long-term investments. The Company’s money market funds are classified within Level 1 of the fair value hierarchy which is based on quoted market prices for the identical underlying securities in active markets. The Company’s long-term auction rate securities investments are classified within Level 3 of the fair value hierarchy which did not have observable inputs as of March 31, 2017 and June 30, 2016 . Refer to Note 1 for a discussion of the Company’s policies regarding the fair value hierarchy. The Company has used a discounted cash flow model to estimate the fair value of the auction rate securities as of March 31, 2017 and June 30, 2016 . The material factors used in preparing the discounted cash flow model are (i) the discount rate utilized to present value the cash flows, (ii) the time period until redemption and (iii) the estimated rate of return. The following table sets forth the Company’s cash equivalents and long-term investments as of March 31, 2017 and June 30, 2016 which are measured at fair value on a recurring basis by level within the fair value hierarchy. These are classified based on the lowest level of input that is significant to the fair value measurement (in thousands): March 31, 2017 Level 1 Level 2 Level 3 Asset at Fair Value Money market funds $ 324 $ — $ — $ 324 Auction rate securities — — 2,643 2,643 Total $ 324 $ — $ 2,643 $ 2,967 June 30, 2016 Level 1 Level 2 Level 3 Asset at Fair Value Money market funds $ 315 $ — $ — $ 315 Auction rate securities — — 2,643 2,643 Total $ 315 $ — $ 2,643 $ 2,958 The above table excludes $107,335,000 and $180,426,000 of cash and $2,369,000 and $2,133,000 of certificates of deposit held by the Company as of March 31, 2017 and June 30, 2016 , respectively. There were no transfers between Level 1, Level 2 or Level 3 securities in the three and nine months ended March 31, 2017 and 2016 . The following table provides a reconciliation of the Company’s financial assets measured at fair value on a recurring basis, consisting of long-term auction rate securities, using significant unobservable inputs (Level 3) for the three and nine months ended March 31, 2017 and 2016 (in thousands): Three Months Ended Nine Months Ended 2017 2016 2017 2016 Balance as of beginning of period $ 2,643 $ 2,633 $ 2,643 $ 2,633 Total realized gains or (losses) included in net income — — — — Total unrealized gains or (losses) included in other comprehensive income — — — — Sales and settlements at par — — — — Transfers in and/or out of Level 3 — — — — Balance as of end of period $ 2,643 $ 2,633 $ 2,643 $ 2,633 The following is a summary of the Company’s long-term investments as of March 31, 2017 and June 30, 2016 (in thousands): March 31, 2017 Amortized Cost Gross Unrealized Holding Gains Gross Unrealized Holding Losses Fair Value Auction rate securities $ 2,750 $ — $ (107 ) $ 2,643 June 30, 2016 Amortized Cost Gross Unrealized Holding Gains Gross Unrealized Holding Losses Fair Value Auction rate securities $ 2,750 $ — $ (107 ) $ 2,643 The Company measures the fair value of outstanding debt for disclosure purposes on a recurring basis. As of March 31, 2017 and June 30, 2016 , short-term and long-term debt of $145,511,000 and $93,589,000 , respectively, are reported at amortized cost. This outstanding debt is classified as Level 2 as it is not actively traded and is valued using a discounted cash flow model that uses observable market inputs. Based on the discounted cash flow model, the fair value of the outstanding debt approximates amortized cost.

Short-term and Long-term Debt O

Short-term and Long-term Debt Obligations	9 Months Ended
	Mar. 31, 2017
Debt Disclosure [Abstract]
Short-term and Long-term Debt Obligations	Short-term and Long-term Debt Obligations Short-term and long-term obligations as of March 31, 2017 and June 30, 2016 consisted of the following (in thousands): March 31, June 30, 2017 2016 Line of credit: Bank of America $ 63,199 $ 62,199 CTBC Bank 20,300 10,100 Total line of credit 83,499 72,299 Term loans: Bank of America 42,500 933 CTBC Bank 19,838 20,357 Total term loans 62,338 21,290 Total debt 145,837 93,589 Less: debt issuance costs (326 ) — Total debt, net of debt issuance costs 145,511 93,589 Current portion, net of debt issuance costs (113,260 ) (53,589 ) Long-term portion, net of debt issuance costs $ 32,251 $ 40,000 Activities under Revolving Lines of Credit and Term Loans Bank of America In June 2015, the Company entered into an amendment to the existing credit agreement with Bank of America N.A. ("Bank of America") which provided for (i) a $65,000,000 revolving line of credit facility that would have matured on November 15, 2015 and (ii) a five -year $14,000,000 term loan facility. The term loan is secured by three buildings located in San Jose, California and the principal and interest were payable monthly through September 30, 2016 with an interest rate at the LIBOR rate plus 1.50% per annum. The Company extended the revolving line of credit to mature on June 30, 2016. In June 2016, the Company entered into a new credit agreement with Bank of America, which provided for (i) a $55,000,000 revolving line of credit facility including a $5,000,000 letter of credit sublimit that matures on June 30, 2017 and (ii) a five -year $50,000,000 term loan facility. This revolving line of credit facility replaced the existing revolving line of credit facility with Bank of America. This additional term loan is secured by seven buildings located in San Jose, California and the property, plant and equipment and the inventory in those buildings. The principal and interest of the term loan are payable monthly through June 30, 2021 with an interest rate at the LIBOR rate plus 1.25% per annum. The interest rate for the revolving line of credit under the above credit agreements with Bank of America is at the LIBOR rate plus 1.25% per annum. The LIBOR rate was 0.78% at March 31, 2017 . The letter of credit is charged at 1.25% per annum. In June 2016, the Company also entered into a separate credit agreement with Bank of America, which provided for a revolving line of credit of $10,000,000 for the Taiwan and the Netherlands subsidiaries that matures on June 30, 2017. The interest rate of the revolving line of credit is equal to a minimum of 0.9% per annum plus the lender's cost of funds. In December 2016, the Company entered into an amendment to the credit agreement with Bank of America to reduce the $55,000,000 revolving line of credit facility to $45,000,000 and increase the revolving line of credit for the Taiwan and the Netherlands subsidiaries from $10,000,000 to $20,000,000 . As of March 31, 2017 and June 30, 2016 , the total outstanding borrowings under the Bank of America term loan was $42,500,000 and $933,000 , respectively. The total outstanding borrowings under the Bank of America lines of credit was $63,199,000 and $62,199,000 as of March 31, 2017 and June 30, 2016 , respectively. The interest rates for these loans ranged from 1.37% to 2.16% per annum at March 31, 2017 and from 1.02% to 1.96% per annum at June 30, 2016 . As of March 31, 2017 , the amount of the unused revolving lines of credit with Bank of America under the credit agreements was $1,801,000 . In May 2017, The Company entered into a second amendment to the credit agreement with Bank of America to increase the revolving line of credit facility for the Company from $45,000,000 to $85,000,000 and extended the maturity date of the revolving lines of credit facility of the Company and the Netherlands subsidiary to October 31, 2018. In May 2017, the Company drew $20,000,000 from Bank of America revolving line of credit with interest rate at 2.24% per annum to support the Company's growth. CTBC Bank In April 2016, the Company entered into a credit agreement with CTBC Bank Co., Ltd ("CTBC Bank") that provides for (i) a 12 -month NTD $700,000,000 or $21,620,000 U.S. dollar equivalent term loan facility secured by the land and building located in Bade, Taiwan with an interest rate equal to the lender's established NTD interest rate plus 0.25% per annum which is adjusted monthly. This term loan facility also includes a 12 -month customs bond up to NTD $100,000,000 or $3,089,000 U.S. dollar equivalent with an annual fee equal to 0.5% per annum, and (ii) a 12 -month revolving line of credit up to 80.00% of eligible accounts receivable in an aggregate amount of up to $40,000,000 with an interest rate equal to the lender's established USD interest rate plus 0.30% per annum which is adjusted monthly. The total borrowings allowed under the credit agreement are capped at $40,000,000 . The Company has extended the credit agreement to mature on May 31, 2017 and is currently negotiating with CTBC Bank to renew the credit agreement. The total outstanding borrowings under the CTBC Bank term loan was denominated in Taiwanese dollars and was translated into U.S. dollars of $19,838,000 and $20,357,000 at March 31, 2017 and June 30, 2016 , respectively. At March 31, 2017 and June 30, 2016 , the total outstanding borrowings under the CTBC Bank revolving line of credit was $20,300,000 and $10,100,000 , respectively, in U.S. dollars. The interest rate for these loans ranged from 0.94% and 1.83% at March 31, 2017 and 0.90% and 1.25% per annum at June 30, 2016 . At March 31, 2017 , there was no available amount for future borrowing under this credit agreement. Covenant Compliance The credit agreement with Bank of America contains customary representations and warranties and customary affirmative and negative covenants applicable to the Company and its subsidiaries. The credit agreement contains certain financial covenants, including the following: • Not to incur on a consolidated basis, a net loss before taxes and extraordinary items for any two consecutive fiscal quarters; • The Consolidated Leverage Ratio, as defined in the agreement, as of the end of any fiscal quarter, measured for the most recently completed twelve (12) months of the Company, shall not be greater than 2.00; • The domestic unencumbered liquid assets, as defined in the agreement, maintained in accounts within the United States shall have an aggregate market value of not less than $40,000,000 , measured quarterly as of the last day of each fiscal quarter. As of March 31, 2017 and June 30, 2016 , total assets of $1,049,629,000 and $934,625,000 , respectively, collateralized the line of credit with Bank of America under the credit agreement, which represent the total assets of the United States headquarter company, except for seven buildings located in San Jose, California and property, plant and equipment and inventory in those buildings. As of March 31, 2017 and June 30, 2016 , total assets collateralizing the term loan with Bank of America under the credit agreement were $97,625,000 and $59,258,000 , respectively. As of March 31, 2017 , the Company was in compliance with all financial covenants associated with the credit agreements with Bank of America. As of March 31, 2017 and June 30, 2016 , the land and building located in Bade, Taiwan with a value of $26,523,000 and $26,804,000 , respectively, collateralized the term loan with CTBC Bank. There are no financial covenants associated with the term loan with CTBC Bank at March 31, 2017 .

Related-party and Other Transac

Related-party and Other Transactions	9 Months Ended
	Mar. 31, 2017
Related Party Transactions [Abstract]
Related-party and Other Transactions	Related-party and Other Transactions Ablecom Technology Inc. —Ablecom, a Taiwan corporation, together with one of its subsidiaries, Compuware (collectively “Ablecom”), is one of the Company’s major contract manufacturers. Ablecom’s ownership of Compuware is below 50% but Compuware remains a related party as Ablecom still has significant influence over its operations. Ablecom’s chief executive officer, Steve Liang, is the brother of Charles Liang, the Company’s President, Chief Executive Officer and Chairman of the Board of Directors. Ablecom owns approximately 0.4% of the Company’s common stock. Charles Liang and his wife, also an officer of the Company, collectively own approximately 10.5% of Ablecom, while Steve Liang and other family members own approximately 36.0% of Ablecom at March 31, 2017 . The Company has product design and manufacturing services agreements (“product design and manufacturing agreements”) and a distribution agreement (“distribution agreement”) with Ablecom. Under the product design and manufacturing agreements, the Company outsources a portion of its design activities and a significant part of its manufacturing of components such as server chassis to Ablecom. Ablecom agrees to design products according to the Company’s specifications. Additionally, Ablecom agrees to build the tools needed to manufacture the products. The Company has agreed to pay for Ablecom's cost of chassis and related product tooling and engineering services and will pay for those items when the work has been completed. Under the distribution agreement, Ablecom purchases server products from the Company for distribution in Taiwan. The Company believes that the pricing and terms under the distribution agreement are similar to the pricing and terms of distribution arrangements the Company has with similar, third party distributors. Ablecom’s net sales to the Company and its net sales of the Company’s products to others comprise a substantial majority of Ablecom’s net sales. The Company purchased products from Ablecom totaling $62,378,000 and $177,513,000 , and sold products to Ablecom totaling $4,069,000 and $14,414,000 for the three and nine months ended March 31, 2017 , respectively. The Company purchased products from Ablecom totaling $55,133,000 and $185,845,000 , and sold products to Ablecom totaling $4,413,000 and $12,125,000 for the three and nine months ended March 31, 2016 , respectively. Amounts owed to the Company by Ablecom as of March 31, 2017 and June 30, 2016 were $7,614,000 and $4,678,000 , respectively. Amounts owed to Ablecom by the Company as of March 31, 2017 and June 30, 2016 were $50,407,000 and $39,152,000 , respectively. For the three and nine months ended March 31, 2017 , the Company paid Ablecom the majority of invoiced dollars between 45 and 86 days of invoice date. For the three and nine months ended March 31, 2017 , the Company paid $1,776,000 and $4,712,000 , respectively, for tooling assets and miscellaneous costs to Ablecom. For the three and nine months ended March 31, 2016 , the Company paid $3,003,000 and $5,901,000 , respectively, for tooling assets and miscellaneous costs to Ablecom. The Company’s exposure to loss as a result of its involvement with Ablecom is limited to (a) potential losses on its purchase orders in the event of an unforeseen decline in the market price and/or demand of the Company’s products such that the Company incurs a loss on the sale or cannot sell the products and (b) potential losses on outstanding accounts receivable from Ablecom in the event of an unforeseen deterioration in the financial condition of Ablecom such that Ablecom defaults on its payable to the Company. Outstanding purchase orders with Ablecom were $102,502,000 and $62,782,000 at March 31, 2017 and June 30, 2016 , respectively, representing the maximum exposure to loss relating to (a) above. The Company does not have any direct or indirect guarantees of losses of Ablecom. In May 2012, the Company and Ablecom jointly established Super Micro Asia Science and Technology Park, Inc. ("Management Company") in Taiwan to manage the common areas shared by the Company and Ablecom for their separately constructed manufacturing facilities. Each company contributed $168,000 and owns 50% of the Management Company. Although the operations of the Management Company are independent of the Company, through governance rights, the Company has the ability to direct the Management Company's business strategies. Therefore, the Company has concluded that the Management Company is a variable interest entity of the Company as the Company is the primary beneficiary of the Management Company. The accounts of the Management Company are consolidated with the accounts of the Company, and a noncontrolling interest has been recorded for the Ablecom's interests in the net assets and operations of the Management Company. In the three and nine months ended March 31, 2017 , $5,000 and $(19,000) of net income (loss) attributable to Ablecom's interest was included in the Company's general and administrative expenses in the condensed consolidated statements of operations, respectively. In the three and nine months ended March 31, 2016 , $13,000 and $9,000 of net income attributable to Ablecom's interest was included in the Company's general and administrative expenses in the condensed consolidated statements of operations, respectively. Investment in a Corporate Venture — In October 2016, the Company entered into agreements pursuant to which the Company agreed to contribute certain technology rights in connection with an investment in a privately-held company ("Corporate Venture") located in China to expand the Company's presence in China. The Corporate Venture is 30% owned by the Company and 70% owned by another investor in China. The transaction was closed in the three months ended March 31, 2017 and the investment has been accounted for under the equity method of accounting. The equity in earnings (losses) of the Corporate Venture were immaterial for the three months ended March 31, 2017 and were included in the Interest and Other Income (Expense), Net in the Company's condensed consolidated statements of operations. The Company recorded a deferred gain related to the contribution of certain technology rights of $6,650,000 in the transaction as of March 31, 2017. The deferred gain will be recognized as license revenue over time on the Company's statement of operations. Additionally, the Company sold products to the Corporate Venture in the three months ended March 31, 2017 and all the related intra-entity sales and profits on the products which remained unsold by the Corporate Venture as of March 31, 2017 have been eliminated and reduced the Company's investment in the Corporate Venture. As of March 31, 2017, the Company's equity investment in the Corporate Venture was $6,714,000 and was recorded under Other Assets on the Company's condensed consolidated balance sheets.

Income Taxes

Income Taxes	9 Months Ended
	Mar. 31, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company recorded provisions for income taxes of $5,140,000 and $20,824,000 for the three and nine months ended March 31, 2017 , respectively, and $7,386,000 and $28,951,000 for the three and nine months ended March 31, 2016 , respectively. The effective tax rate was 23.6% and 28.5% for the three and nine months ended March 31, 2017 , respectively, and 30.7% and 30.8% for the three and nine months ended March 31, 2016 , respectively. The effective tax rate for the three and nine months ended March 31, 2017 is estimated to be lower than the federal statutory rate primarily due to a tax benefit resulting from the completion of an income tax audit in a foreign jurisdiction, the benefit from U.S. federal research and development ("R&D") tax credits and domestic production activities deductions. As of March 31, 2017 , the Company had a liability for gross unrecognized tax benefits of $17,329,000 , substantially all of which, if recognized, would affect the Company's effective tax rate. During the three and nine months ended March 31, 2017 , there were no material changes in the total amount of the liability for gross unrecognized tax benefits. The Company’s policy is to include interest and penalties related to unrecognized tax benefits within the provision for taxes on the condensed consolidated statements of operations. As of March 31, 2017 , the Company had accrued $1,418,000 of interest and penalties relating to unrecognized tax benefits. The Company is subject to United States federal income tax as well as income taxes in many state and foreign jurisdictions. The Company's 2012 and 2013 federal tax returns are currently under the Internal Revenue Service ("IRS") examination. The Company has responded to Information Document Requests ("IDRs"), issued by the IRS. No adjustment has been proposed by the IRS as of March 31, 2017 . The Company was also under audit in Taiwan for tax year 2013 related to local income tax exemption regime which the Company has participated in. The Taiwan taxing authority issued a tax assessment related to the 2013 tax exemption which the Company appealed for. On January 9, 2017, the Company received a notification letter from the Taiwan taxing authority that the audit was completed. The audit resulted in minimal adjustments. The Company does not plan to appeal or litigate the audit results. The federal statute of limitations remain open in general for tax years 2012 through 2016. The state statute of limitations remain open in general for tax years 2012 through 2016. The statute of limitations in major foreign jurisdictions remain open for examination in general for tax years 2010 through 2016.

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Mar. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Litigation and Claims — The Company is involved in various legal proceedings arising from the normal course of business activities. The Company defends itself vigorously against any such claims. In management’s opinion, the resolution of any matters will not have a material adverse effect on the Company’s consolidated financial condition, results of operations or liquidity. Purchase Commitments — The Company has agreements to purchase certain units of inventory and non-inventory items through the next 12 months. As of March 31, 2017 , these remaining non-cancellable commitments were $412,541,000 compared to $334,010,000 as of June 30, 2016 .

Segment Reporting

Segment Reporting	9 Months Ended
	Mar. 31, 2017
Segment Reporting [Abstract]
Segment Reporting	Segment Reporting The Company operates in one operating segment that develops and provides high performance server solutions based upon an innovative, modular and open-standard architecture. The Company’s chief operating decision maker is the Chief Executive Officer. International net sales are based on the country and region to which the products were shipped. The following is a summary for the three and nine months ended March 31, 2017 and 2016 , of net sales by geographic region (in thousands): Three Months Ended Nine Months Ended 2017 2016 2017 2016 Net sales: United States $ 333,945 $ 326,392 $ 987,357 $ 1,072,126 Europe 114,832 93,279 358,619 294,239 Asia 150,791 78,544 384,872 241,595 Other 31,556 34,506 81,198 83,343 $ 631,124 $ 532,721 $ 1,812,046 $ 1,691,303 The following is a summary of long-lived assets, excluding financial instruments, deferred tax assets and other assets (in thousands): March 31, June 30, 2017 2016 Long-lived assets: United States $ 152,051 $ 142,764 Asia 40,949 42,052 Europe 2,553 3,133 $ 195,553 $ 187,949 The following is a summary of net sales by product type (in thousands): Three Months Ended Nine Months Ended 2017 2016 2017 2016 Amount Percent of Amount Percent of Amount Percent of Amount Percent of Server systems $ 441,822 70.0 % $ 372,404 69.9 % $ 1,243,313 68.6 % $ 1,182,362 69.9 % Subsystems and accessories 189,302 30.0 % 160,317 30.1 % 568,733 31.4 % 508,941 30.1 % Total $ 631,124 100.0 % $ 532,721 100.0 % $ 1,812,046 100.0 % $ 1,691,303 100.0 % Server systems constitute an assembly of subsystems and accessories. Subsystems and accessories are comprised of serverboards, chassis and accessories. No customer represented greater than 10% of the Company's total net sales in the three and nine months ended March 31, 2017 and one customer represented 10.2% and 12.6% of the Company's total net sales in the three and nine months ended March 31, 2016 , respectively. China represented 10.4% of the Company's total net sales in the three months ended March 31, 2017 and no country other than the United States represented greater than 10% of the Company's total net sales in the nine months ended March 31, 2017 . No country other than the United States represented greater than 10% of the Company’s total net sales in the three and nine months ended March 31, 2016 . No customer accounted for 10% or more of the Company's accounts receivable as of March 31, 2017 and June 30, 2016 .

Summary of Significant Accoun19

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Mar. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The unaudited condensed consolidated financial statements reflect the condensed consolidated balance sheets, results of operations, comprehensive income and cash flows of Super Micro Computer, Inc. and its wholly-owned subsidiaries (collectively, the “Company”). All intercompany accounts and transactions have been eliminated in consolidation. The unaudited condensed consolidated financial statements included herein have been prepared by the Company pursuant to the rules and regulations of the United States Securities and Exchange Commission (“SEC”) and include the accounts of the Company and its wholly-owned subsidiaries. Certain information and footnote disclosures normally included in financial statements prepared in accordance with United States generally accepted accounting principles have been condensed or omitted pursuant to such rules and regulations. These condensed consolidated financial statements should be read in conjunction with the Company’s audited consolidated financial statements for the fiscal year ended June 30, 2016 included in its Annual Report on Form 10-K, as filed with the SEC (the “Annual Report”). The unaudited condensed consolidated financial statements included herein reflect all adjustments, including normal recurring adjustments, which are, in the opinion of management, necessary for a fair presentation of the consolidated financial position, results of operations and cash flows for the periods presented. The condensed consolidated results of operations for the three and nine months ended March 31, 2017 are not necessarily indicative of the results that may be expected for future quarters or for the fiscal year ending June 30, 2017 . The Company consolidates its investment in Super Micro Asia Science and Technology Park, Inc. as it is a variable interest entity and the Company is the primary beneficiary. The noncontrolling interest is presented as a separate component from the Company's equity in the equity section of the condensed consolidated balance sheets. Net income attributable to the noncontrolling interest is not presented separately in the condensed consolidated statements of operations and is included in the general and administrative expenses as the amount is not material for any of the fiscal periods presented.
Fair Value of Financial Instruments	Fair Value of Financial Instruments The Company accounts for certain assets and liabilities at fair value. Accounts receivable and accounts payable are carried at cost, which approximates fair value due to the short maturity of these instruments. Cash equivalents and long-term investments are carried at fair value. Short-term and long-term debt is carried at amortized cost, which approximates its fair value based on borrowing rates currently available to the Company for loans with similar terms. The hierarchy below lists three levels of fair value based on the extent to which inputs used in measuring fair value are observable in the market. The Company categorizes each of its fair value measurements in one of these three levels based on the lowest level input that is significant to the fair value measurement in its entirety. These levels are: • Level 1 - Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities; • Level 2 - Quoted prices in markets that are not active or financial instruments for which all significant inputs are observable, either directly or indirectly; and • Level 3 - Prices or valuations that require inputs that are both significant to the fair value measurement and unobservable.
Net Income Per Common Share	Net Income Per Common Share The Company's basic net income per share is computed by dividing net income by the weighted-average number of shares of common stock outstanding during the period. Diluted net income per share is computed by dividing net income by the weighted-average number of shares of common stock outstanding during the period increased to include the number of additional shares of common stock that would have been outstanding if the potentially dilutive securities had been issued. Potentially dilutive securities include outstanding stock options and unvested restricted stock units (“RSUs”). Under the treasury stock method, an increase in the fair market value of the Company’s common stock results in a greater dilutive effect from outstanding stock options and RSUs. Additionally, the exercise of employee stock options and the vesting of restricted stock units results in a further dilutive effect on net income per share.
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements In May 2014, the Financial Accounting Standards Board (“FASB”) issued new accounting guidance, Revenue from Contracts with Customers , that replaces all current U.S. GAAP guidance on revenue, eliminates all industry-specific guidance and provides a unified model in determining when and how revenue is recognized. The core principle is that a company should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. Further, in March 2016, the FASB issued an amendment to the accounting guidance, Revenue from Contracts with Customers: Principal versus Agent Considerations (Reporting Revenue Gross versus Net) , which clarifies the implementation guidance for principal versus agent considerations. In April 2016, the FASB issued an amendment to the accounting guidance, Revenue from Contracts with Customers: Identifying Performance Obligations and Licensing , which clarifies the guidance related to identifying performance obligations and accounting for licenses of intellectual property. In May 2016, the FASB issued an amendment to the accounting guidance, Revenue from Contracts with Customers: Narrow-Scope Improvements and Practical Expedients , which clarifies the guidance related to collectability and non-cash consideration, as well as provides practical expedients for the transition to the new accounting guidance. This guidance can be applied either retrospectively or as a cumulative-effect adjustment as of the date of adoption. Early adoption is permitted for annual periods beginning after December 15, 2016. The Company intends to apply the new standard starting from the first quarter of fiscal year 2019. Based on the Company's preliminary plan, the Company intends to adopt the new standard using the modified retrospective method. The Company’s decision was based on a number of factors such as the significance of the impact of the new standard on the Company’s financial results, system readiness, including that of software procured from third-party providers, and the Company’s ability to accumulate and analyze the information necessary to assess the cumulative effect of the new standard through July 1, 2018. However, the Company continues to assess this in connection with its entire project plan. The Company expects the implementation of the new standard to impact the recognition of its revenue as follows: • Substantially all of the Company's current revenue is from the sale of hardware products. The Company does not expect any material changes to the timing or amount of revenue for these types of sales under the new standard. • For extended warranty and on-site services, the Company is still assessing the impact and timing to revenue from the implementation of the new standard. However, the Company does not currently expect the new standard to have a material impact on its revenue for these types of arrangements. • For software and intellectual property licenses, the Company is still assessing the impact and timing to revenue from the implementation of the new standard. However, the Company does not currently expect the new standard to have a material impact on its revenue for these types of arrangements. • The Company's revenue disclosures are expected to expand. The Company is still assessing the impact to its processes and systems configuration from the implementation of the new revenue standard and does not currently expect any significant changes to its other accounting policies from the adoption of the new revenue standard. The Company's implementation efforts are progressing as planned. In April 2015, the FASB issued an amendment to the accounting guidance, Interest-Imputation of Interest: Simplifying the Presentation of Debt Issuance Costs. This amendment requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. In August 2015, the FASB issued an amendment to the accounting guidance, Presentation and Subsequent Measurement of Debt Issuance Costs Associated with Line-of-Credit Arrangements. This amendment clarifies that an entity may defer and present debt issuance costs associated with line-of-credit arrangements as an asset and subsequently amortize the deferred debt issuance costs ratably over the term of the line-of-credit arrangement, regardless of whether there are any outstanding borrowings on the line-of-credit arrangement. These amendments should be applied retrospectively to all prior periods presented in the financial statements. The Company adopted these amendments in the first quarter of fiscal year 2017. There was no material impact on its financial statement disclosures, results of operations and financial position. In July 2015, the FASB issued an amendment to the accounting guidance, Inventory: Simplifying the Measurement of Inventory . The amendment requires entities to measure inventory at the lower of cost and net realizable value thereby simplifying the current guidance under which an entity must measure inventory at the lower of cost or market. The amendment is effective for the Company on July 1, 2018. The Company is currently evaluating the effect the guidance will have on its financial statement disclosures, results of operations and financial position. In February 2016, the FASB issued an amendment to the accounting guidance, Leases. The amendment will supersede the existing lease guidance, including on-balance sheet recognition of operating leases for lessees. This amendment should be applied using a modified retrospective approach and is effective for the Company on July 1, 2018. Early adoption is permitted. The Company is currently evaluating the effect the guidance will have on its financial statement disclosures, results of operations and financial position. In March 2016, the FASB issued new accounting guidance, Compensation—Stock Compensation: Improvements to Employee Share-Based Payment Accounting on the accounting for certain aspects of share-based payment to employees, including the accounting for income taxes, forfeitures, and statutory tax withholding requirements as well as classification in the statement of cash flows. Early adoption is permitted for any interim or annual periods. This guidance is effective for the Company on July 1, 2017. The Company is currently evaluating the effect the guidance will have on its financial statement disclosures, results of operations and financial position. In August 2016, the FASB issued an amendment to the accounting guidance, Statement of Cash Flows: Classification of Certain Cash Receipts and Cash Payments. This amendment consists of eight provisions that provide guidance on the classification of certain cash receipts and cash payments. If practicable, this amendment should be applied using a retrospective transition method to each period presented. For the provisions that are impracticable to apply retrospectively, those provisions may be applied prospectively as of the earliest date practicable. This amendment is effective for the Company on July 1, 2019. Early adoption is permitted. The Company is currently evaluating the effect the guidance will have on its financial statement disclosures, results of operations and financial position. In October 2016, the FASB issued an amendment to the accounting guidance, Intra-Entity Transfers of Assets Other Than Inventory . This amendment simplifies the accounting for income tax consequences of intra-entity transfers of assets other than inventory by requiring recognition of current and deferred income tax consequences when such transfers occur. This amendment is effective for the Company on July 1, 2018. Early adoption is permitted. The Company is currently evaluating the effect the guidance will have on its financial statement disclosure, results of operations and financial position. In November 2016, the FASB issued an amendment to the accounting guidance, Statement of Cash Flows: Restricted Cash. This amendment addresses presentations of total cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. This amendment is effective for the Company on July 1, 2018. Early adoption is permitted. The Company does not expect the impact of adopting this guidance to be significant.

Stock-based Compensation and 20

Stock-based Compensation and Stockholders' Equity (Tables)	9 Months Ended
	Mar. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of assumptions used to estimate fair value of stock options granted using Black-Scholes option pricing model	The fair value of stock option grants for the three and nine months ended March 31, 2017 and 2016 was estimated on the date of grant using the Black-Scholes option pricing model with the following assumptions: Three Months Ended Nine Months Ended 2017 2016 2017 2016 Risk-free interest rate 2.03 % 1.38% - 1.48% 1.12% - 2.03% 1.38% - 1.57% Expected term 5.31 years 5.31 years 5.31 - 5.38 years 5.31 - 5.33 years Dividend yield — % — % — % — % Volatility 43.84% - 49.12% 49.09% - 50.89% 43.84% - 49.64% 47.06% - 50.89% Weighted-average fair value $ 12.72 $ 12.99 $ 10.90 $ 12.04
Schedule of stock-based compensation expense	The following table shows total stock-based compensation expense included in the condensed consolidated statements of operations for the three and nine months ended March 31, 2017 and 2016 (in thousands): Three Months Ended Nine Months Ended 2017 2016 2017 2016 Cost of sales $ 334 $ 294 $ 968 $ 792 Research and development 3,069 2,549 8,989 7,423 Sales and marketing 541 491 1,539 1,330 General and administrative 889 552 2,550 2,223 Stock-based compensation expense before taxes 4,833 3,886 14,046 11,768 Income tax impact (1,549 ) (1,191 ) (4,270 ) (3,290 ) Stock-based compensation expense, net $ 3,284 $ 2,695 $ 9,776 $ 8,478
Summary of stock option activity	The following table summarizes stock option activity during the nine months ended March 31, 2017 under all plans: Options Outstanding Weighted Average Exercise Price per Share Weighted Average Remaining Contractual Term (in Years) Aggregate Intrinsic Value (in thousands) Balance as of June 30, 2016 (7,495,131 shares exercisable at weighted average exercise price of $13.35 per share) 8,960,867 $ 14.88 Granted (weighted average fair value of $10.90) 341,400 $ 24.11 Exercised (827,875 ) $ 11.02 Forfeited (24,011 ) $ 20.76 Balance as of March 31, 2017 8,450,381 $ 15.62 4.90 $ 86,351 Options vested and expected to vest at March 31, 2017 8,378,933 $ 15.53 4.86 $ 86,238 Options vested and exercisable at March 31, 2017 7,364,413 $ 14.29 4.41 $ 83,637
Summary of restricted stock unit activity	The following table summarizes RSUs activity during the nine months ended March 31, 2017 under all plans: RSUs Outstanding Weighted Average Grant-Date Fair Value per Share Aggregate Intrinsic Value (in thousands) Balance as of June 30, 2016 926,983 $ 30.23 Granted 613,310 $ 23.42 Released (285,037 ) $ 27.45 Forfeited (81,869 ) $ 26.67 Balance as of March 31, 2017 1,173,387 $ 27.59 $ 29,745

Net Income Per Share (Tables)

Net Income Per Share (Tables)	9 Months Ended
	Mar. 31, 2017
Earnings Per Share [Abstract]
Computation of basic and diluted net income per share	The following table shows the computation of basic and diluted net income per share for the three and nine months ended March 31, 2017 and 2016 (in thousands, except per share amounts): Three Months Ended Nine Months Ended 2017 2016 2017 2016 Numerator: Net income $ 16,666 $ 16,662 $ 52,194 $ 65,050 Denominator: Weighted-average shares outstanding 48,445 48,047 48,243 47,737 Effect of dilutive securities 3,473 4,191 3,336 3,900 Weighted-average diluted shares 51,918 52,238 51,579 51,637 Basic net income per share $ 0.34 $ 0.35 $ 1.08 $ 1.36 Diluted net income per share $ 0.32 $ 0.32 $ 1.01 $ 1.26

Balance Sheet Components (Table

Balance Sheet Components (Tables)	9 Months Ended
	Mar. 31, 2017
Balance Sheet Related Disclosures [Abstract]
Schedule of inventory	Inventory: March 31, June 30, Finished goods $ 475,031 $ 351,209 Work in process 63,207 19,105 Purchased parts and raw materials 104,076 78,666 Total inventory $ 642,314 $ 448,980
Schedule of property, plant, and equipment	Property, Plant, and Equipment: March 31, June 30, Land $ 70,484 $ 70,454 Buildings 71,665 71,665 Building and leasehold improvements 14,616 10,941 Buildings construction in progress (1) 22,507 15,803 Machinery and equipment 58,577 53,282 Furniture and fixtures 13,306 10,364 Purchased software 14,276 13,920 Purchased software construction in progress 435 532 265,866 246,961 Accumulated depreciation and amortization (70,313 ) (59,012 ) Property, plant and equipment, net $ 195,553 $ 187,949 (1) In connection with the purchase of property located in San Jose, California for the Company's Green Computing Park, the Company continues to engage several contractors for the development and construction of improvements on the property.
Schedule of other assets	Other Assets: March 31, June 30, Long-term deferred service costs $ 2,742 $ 3,498 Restricted cash 2,190 1,851 Investments in privately held companies 8,124 1,411 Deposits 258 910 Prepaid royalty license 561 748 Others 165 128 Total other assets $ 14,040 $ 8,546
Schedule of accrued liabilities	Accrued Liabilities: March 31, June 30, Accrued payroll and related expenses $ 18,403 $ 16,015 Customer deposits 8,778 6,265 Accrued warranty costs 5,805 5,816 Accrued cooperative marketing expenses 7,832 7,300 Deferred revenue (1) 24,038 13,418 Others 6,037 6,804 Total accrued liabilities $ 70,893 $ 55,618 (1) As of March 31, 2017 and June 30, 2016 , deferred revenue consist primarily of deferred extended warranty and on-site service revenue of $21,281,000 and $12,746,000 , respectively.
Schedule of other long-term liabilities	Other Long-term Liabilities: March 31, June 30, Deferred revenue-net of current portion (1) $ 40,666 $ 21,940 Accrued unrecognized tax benefits including related interests and penalties-net of current portion 17,329 16,056 Accrued warranty costs-net of current portion 1,304 1,313 Others 1,348 1,294 Total other long-term liabilities $ 60,647 $ 40,603 (1) As of March 31, 2017 and June 30, 2016 , deferred revenue-net of current portion consist primarily of deferred extended warranty and on-site service revenue of $34,017,000 and $21,265,000 , respectively.
Reconciliation of the changes in accrued warranty costs	Product Warranties: Three Months Ended Nine Months Ended 2017 2016 2017 2016 Balance, beginning of period $ 6,925 $ 7,777 $ 7,129 $ 7,700 Provision for warranty 5,332 3,685 15,030 12,229 Costs charged to accrual (5,362 ) (3,872 ) (14,919 ) (10,545 ) Change in estimated liability for pre-existing warranties 214 (460 ) (131 ) (2,254 ) Balance, end of period 7,109 7,130 7,109 7,130 Current portion (5,805 ) (5,634 ) (5,805 ) (5,634 ) Long-term portion $ 1,304 $ 1,496 $ 1,304 $ 1,496

Fair Value Disclosure (Tables)

Fair Value Disclosure (Tables)	9 Months Ended
	Mar. 31, 2017
Fair Value Disclosures [Abstract]
Schedule of cash equivalents and long-term investments measured at fair value on a recurring basis	The following table sets forth the Company’s cash equivalents and long-term investments as of March 31, 2017 and June 30, 2016 which are measured at fair value on a recurring basis by level within the fair value hierarchy. These are classified based on the lowest level of input that is significant to the fair value measurement (in thousands): March 31, 2017 Level 1 Level 2 Level 3 Asset at Fair Value Money market funds $ 324 $ — $ — $ 324 Auction rate securities — — 2,643 2,643 Total $ 324 $ — $ 2,643 $ 2,967 June 30, 2016 Level 1 Level 2 Level 3 Asset at Fair Value Money market funds $ 315 $ — $ — $ 315 Auction rate securities — — 2,643 2,643 Total $ 315 $ — $ 2,643 $ 2,958
Reconciliation of financial assets measured at fair value on a recurring basis	The following table provides a reconciliation of the Company’s financial assets measured at fair value on a recurring basis, consisting of long-term auction rate securities, using significant unobservable inputs (Level 3) for the three and nine months ended March 31, 2017 and 2016 (in thousands): Three Months Ended Nine Months Ended 2017 2016 2017 2016 Balance as of beginning of period $ 2,643 $ 2,633 $ 2,643 $ 2,633 Total realized gains or (losses) included in net income — — — — Total unrealized gains or (losses) included in other comprehensive income — — — — Sales and settlements at par — — — — Transfers in and/or out of Level 3 — — — — Balance as of end of period $ 2,643 $ 2,633 $ 2,643 $ 2,633
Summary of long-term investments	The following is a summary of the Company’s long-term investments as of March 31, 2017 and June 30, 2016 (in thousands): March 31, 2017 Amortized Cost Gross Unrealized Holding Gains Gross Unrealized Holding Losses Fair Value Auction rate securities $ 2,750 $ — $ (107 ) $ 2,643 June 30, 2016 Amortized Cost Gross Unrealized Holding Gains Gross Unrealized Holding Losses Fair Value Auction rate securities $ 2,750 $ — $ (107 ) $ 2,643

Short-term and Long-term Debt24

Short-term and Long-term Debt Obligations (Tables)	9 Months Ended
	Mar. 31, 2017
Debt Disclosure [Abstract]
Schedule of short-term and long-term debt obligations	Short-term and long-term obligations as of March 31, 2017 and June 30, 2016 consisted of the following (in thousands): March 31, June 30, 2017 2016 Line of credit: Bank of America $ 63,199 $ 62,199 CTBC Bank 20,300 10,100 Total line of credit 83,499 72,299 Term loans: Bank of America 42,500 933 CTBC Bank 19,838 20,357 Total term loans 62,338 21,290 Total debt 145,837 93,589 Less: debt issuance costs (326 ) — Total debt, net of debt issuance costs 145,511 93,589 Current portion, net of debt issuance costs (113,260 ) (53,589 ) Long-term portion, net of debt issuance costs $ 32,251 $ 40,000

Segment Reporting (Tables)

Segment Reporting (Tables)	9 Months Ended
	Mar. 31, 2017
Segment Reporting [Abstract]
Summary of net sales by geographic region	The following is a summary for the three and nine months ended March 31, 2017 and 2016 , of net sales by geographic region (in thousands): Three Months Ended Nine Months Ended 2017 2016 2017 2016 Net sales: United States $ 333,945 $ 326,392 $ 987,357 $ 1,072,126 Europe 114,832 93,279 358,619 294,239 Asia 150,791 78,544 384,872 241,595 Other 31,556 34,506 81,198 83,343 $ 631,124 $ 532,721 $ 1,812,046 $ 1,691,303
Summary of long-lived assets, excluding financial instruments, deferred tax assets, other assets, goodwill and intangible assets	The following is a summary of long-lived assets, excluding financial instruments, deferred tax assets and other assets (in thousands): March 31, June 30, 2017 2016 Long-lived assets: United States $ 152,051 $ 142,764 Asia 40,949 42,052 Europe 2,553 3,133 $ 195,553 $ 187,949
Summary of net sales by product type	The following is a summary of net sales by product type (in thousands): Three Months Ended Nine Months Ended 2017 2016 2017 2016 Amount Percent of Amount Percent of Amount Percent of Amount Percent of Server systems $ 441,822 70.0 % $ 372,404 69.9 % $ 1,243,313 68.6 % $ 1,182,362 69.9 % Subsystems and accessories 189,302 30.0 % 160,317 30.1 % 568,733 31.4 % 508,941 30.1 % Total $ 631,124 100.0 % $ 532,721 100.0 % $ 1,812,046 100.0 % $ 1,691,303 100.0 %

Stock-based Compensation and 26

Stock-based Compensation and Stockholders' Equity - Equity Incentive Plan (Details) - USD ($)	9 Months Ended
	Mar. 31, 2017	Jul. 31, 2016	Jun. 30, 2016	Mar. 08, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Treasury stock, value	$ 20,491,000		$ 2,030,000
Shares reserved for outstanding awards (in shares)	8,450,381		8,960,867
Equity Incentive Plan, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for future issuance (in shares)				4,700,000
Authorized shares available for future issuance (in shares)	3,156,856
Equity Incentive Plan, 2016 | Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option expected life (in years)	10 years
Equity Incentive Plan, 2016 | Employee stock options and restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period (in years)	4 years
Equity Incentive Plan, 2016 | Employee stock options and restricted stock units | Year one
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option and restricted stock units vesting rights, percentage	25.00%
Equity Incentive Plan, 2016 | Employee stock options and restricted stock units | Quarterly
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option and restricted stock units vesting rights, percentage	6.25%
Equity Incentive Plan, 2006
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for future issuance (in shares)				2,800,000
Shares reserved for outstanding awards (in shares)				8,696,444
Number of authorized shares available for future issuance were cancelled (in shares)				1,153,412
Equity Incentive Plan, 2016, more than 10% ownership
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of fair market value	110.00%
Equity Incentive Plan, 2016, less than 10% ownership
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of fair market value	100.00%
Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock repurchase program, authorized amount		$ 100,000,000
Treasury stock (in shares)	888,097
Treasury stock acquired, average cost per share (in dollars per share)	$ 20.79
Treasury stock, value	$ 18,461,000

Stock-based Compensation and 27

Stock-based Compensation and Stockholders' Equity - Determining Fair Value (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Risk-free interest rate	2.03%
Expected term	5 years 3 months 22 days	5 years 3 months 22 days
Dividend yield (as a percent)	0.00%	0.00%	0.00%	0.00%
Weighted-average fair value (in dollars per share)	$ 12.72	$ 12.99	$ 10.90	$ 12.04
Employee Service Share-based Compensation, Aggregate Disclosures [Abstract]
Stock-based compensation expense before taxes	$ 4,833	$ 3,886	$ 14,046	$ 11,768
Income tax impact	(1,549)	(1,191)	(4,270)	(3,290)
Stock-based compensation expense, net	3,284	2,695	9,776	8,478
Excess tax benefits (shortfalls) recorded in additional paid in capital			1,224	3,548
Excess tax benefit from financing activities			1,893	2,506
Employee stock option
Employee Service Share-based Compensation, Aggregate Disclosures [Abstract]
Unrecognized compensation cost related to non-vested stock-based awards	39,249		$ 39,249
Unrecognized compensation cost related to non-vested stock based awards, period for recognition (in years)			2 years 4 months 24 days
Cost of sales
Employee Service Share-based Compensation, Aggregate Disclosures [Abstract]
Stock-based compensation expense before taxes	334	294	$ 968	792
Research and development
Employee Service Share-based Compensation, Aggregate Disclosures [Abstract]
Stock-based compensation expense before taxes	3,069	2,549	8,989	7,423
Sales and marketing
Employee Service Share-based Compensation, Aggregate Disclosures [Abstract]
Stock-based compensation expense before taxes	541	491	1,539	1,330
General and administrative
Employee Service Share-based Compensation, Aggregate Disclosures [Abstract]
Stock-based compensation expense before taxes	$ 889	$ 552	$ 2,550	$ 2,223
Minimum
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Risk-free interest rate		1.38%	1.12%	1.38%
Expected term			5 years 3 months 22 days	5 years 3 months 22 days
Volatility (as a percent)	43.84%	49.09%	43.84%	47.06%
Maximum
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]
Risk-free interest rate		1.48%	2.03%	1.57%
Expected term			5 years 4 months 17 days	5 years 3 months 29 days
Volatility (as a percent)	49.12%	50.89%	49.64%	50.89%

Stock-based Compensation and 28

Stock-based Compensation and Stockholders' Equity - Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016	Jun. 30, 2016
Options Outstanding
Balance at beginning of period (in shares)			8,960,867
Granted (in shares)			341,400
Exercised (in shares)			(827,875)
Forfeited (in shares)			(24,011)
Balance at end of period (in shares)	8,450,381		8,450,381
Options vested and expected to vest (in shares)	8,378,933		8,378,933
Options vested and exercisable (in shares)	7,364,413		7,364,413		7,495,131
Weighted Average Exercise Price per Share
Balance at beginning of period (in dollars per share)			$ 14.88
Granted (in dollars per share)			24.11
Exercised (in dollars per share)			11.02
Forfeited (in dollars per share)			20.76
Balance at end of period (in dollars per share)	$ 15.62		15.62
Options vested and expected to vest (in dollars per share)	15.53		15.53
Options vested and exercisable (in dollars per share)	14.29		14.29		$ 13.35
Weighted-average fair value (in dollars per share)	$ 12.72	$ 12.99	$ 10.90	$ 12.04
Weighted Average Remaining Contractual Term and Aggregate Intrinsic Value
Weighted average remaining contractual term, options outstanding (in years)			4 years 10 months 24 days
Weighted average remaining contractual term, options vested and expected to vest (in years)			4 years 10 months 10 days
Weighted average remaining contractual term, options vested and exercisable (in years)			4 years 4 months 28 days
Aggregate intrinsic value, options outstanding	$ 86,351		$ 86,351
Aggregate intrinsic value, options vested and expected to vest	86,238		86,238
Aggregate intrinsic value, options vested and exercisable	83,637		83,637
Total pretax intrinsic value of options exercised	$ 5,237	$ 11,637	$ 11,312	$ 16,491

Stock-based Compensation and 29

Stock-based Compensation and Stockholders' Equity - RSU Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Aggregate Intrinsic Value
Minimum tax withholding paid on behalf of employees for restricted stock units	$ 934	$ 604	$ 2,476	$ 1,108
Restricted stock units
RSUs Outstanding
Balance at beginning of period (in shares)			926,983
Granted (in shares)			613,310
Vested (in shares)	(97,392)	(50,912)	(285,037)	(102,918)
Forfeited (in shares)			(81,869)
Balance at end of period (in shares)	1,173,387		1,173,387
Weighted Average Grant-Date Fair Value per Share
Balance at beginning of period (in dollars per share)			$ 30.23
Granted (in dollars per share)			23.42
Vested (in dollars per share)			27.45
Forfeited (in dollars per share)			26.67
Balance at end of period (in dollars per share)	$ 27.59		$ 27.59
Aggregate Intrinsic Value
Balance at end of period	$ 29,745		$ 29,745
Total pretax intrinsic value of restricted stock units vested	$ 2,620	$ 1,579	$ 7,015	$ 2,937
Shares withheld for taxes (in shares)	34,727	19,480	100,609	38,801

Net Income Per Share (Details)

Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Numerator:
Net income	$ 16,666	$ 16,662	$ 52,194	$ 65,050
Denominator:
Weighted-average shares outstanding (in shares)	48,445	48,047	48,243	47,737
Effect of dilutive securities (in shares)	3,473	4,191	3,336	3,900
Weighted-average diluted shares (in shares)	51,918	52,238	51,579	51,637
Basic net income per share (in dollars per share)	$ 0.34	$ 0.35	$ 1.08	$ 1.36
Diluted net income per share (in dollars per share)	$ 0.32	$ 0.32	$ 1.01	$ 1.26
Employee stock options and restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive outstanding equity awards (in shares)	1,675	1,287	1,594	1,235

Balance Sheet Components - Inve

Balance Sheet Components - Inventory (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016	Jun. 30, 2016
Inventory, Net [Abstract]
Finished goods	$ 475,031		$ 475,031		$ 351,209
Work in process	63,207		63,207		19,105
Purchased parts and raw materials	104,076		104,076		78,666
Total inventory	642,314		642,314		$ 448,980
Provision for lower of cost or market and excess and obsolete inventory	$ 1,771	$ 2,246	$ 8,162	$ 6,026

Balance Sheet Components - Prop

Balance Sheet Components - Property, Plant, and Equipment (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Jun. 30, 2016
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 265,866	$ 246,961
Accumulated depreciation and amortization	(70,313)	(59,012)
Property, plant and equipment, net	195,553	187,949
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	70,484	70,454
Buildings
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	71,665	71,665
Building and leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	14,616	10,941
Buildings construction in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	22,507	15,803
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	58,577	53,282
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	13,306	10,364
Purchased software
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	14,276	13,920
Purchased software construction in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 435	$ 532

Balance Sheet Components - Othe

Balance Sheet Components - Other Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Jun. 30, 2016
Other Assets, Noncurrent Disclosure [Abstract]
Long-term deferred service costs	$ 2,742	$ 3,498
Restricted cash	2,190	1,851
Investments in privately held companies	8,124	1,411
Deposits	258	910
Prepaid royalty license	561	748
Others	165	128
Total other assets	$ 14,040	$ 8,546

Balance Sheet Components - Accr

Balance Sheet Components - Accrued Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Jun. 30, 2016	Mar. 31, 2016
Accrued Liabilities [Line Items]
Accrued payroll and related expenses	$ 18,403	$ 16,015
Customer deposits	8,778	6,265
Accrued warranty costs	5,805	5,816	$ 5,634
Accrued cooperative marketing expenses	7,832	7,300
Deferred revenue	24,038	13,418
Others	6,037	6,804
Total accrued liabilities	70,893	55,618
Deferred Extended Warranty and On-site Service Revenue
Accrued Liabilities [Line Items]
Deferred revenue	$ 21,281	$ 12,746

Balance Sheet Components - Ot35

Balance Sheet Components - Other Long-Term Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Jun. 30, 2016	Mar. 31, 2016
Other Commitments [Line Items]
Deferred revenue-net of current portion	$ 40,666	$ 21,940
Accrued unrecognized tax benefits including related interests and penalties-net of current portion	17,329	16,056
Accrued warranty costs-net of current portion	1,304	1,313	$ 1,496
Others	1,348	1,294
Total other long-term liabilities	60,647	40,603
Deferred Extended Warranty and On-site Service Revenue
Other Commitments [Line Items]
Deferred revenue, noncurrent	$ 34,017	$ 21,265

Balance Sheet Components - Prod

Balance Sheet Components - Product Warranties (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016	Jun. 30, 2016
Product Warranties:
Balance, beginning of period	$ 6,925	$ 7,777	$ 7,129	$ 7,700
Provision for warranty	5,332	3,685	15,030	12,229
Costs charged to accrual	(5,362)	(3,872)	(14,919)	(10,545)
Change in estimated liability for pre-existing warranties	214	(460)	(131)	(2,254)
Balance, end of period	7,109	7,130	7,109	7,130
Current portion	(5,805)	(5,634)	(5,805)	(5,634)	$ (5,816)
Long-term portion	$ 1,304	$ 1,496	$ 1,304	$ 1,496	$ 1,313

Fair Value Disclosure - Cash Eq

Fair Value Disclosure - Cash Equivalents and Long-term Investments (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Jun. 30, 2016
Fair Value, Measurements, Recurring
Asset at Fair Value
Money market funds	$ 324	$ 315
Auction rate securities	2,643	2,643
Total	2,967	2,958
Fair Value, Measurements, Recurring | Level 1
Asset at Fair Value
Money market funds	324	315
Auction rate securities	0	0
Total	324	315
Fair Value, Measurements, Recurring | Level 2
Asset at Fair Value
Money market funds	0	0
Auction rate securities	0	0
Total	0	0
Fair Value, Measurements, Recurring | Level 3
Asset at Fair Value
Money market funds	0	0
Auction rate securities	2,643	2,643
Total	2,643	2,643
Cash
Asset at Fair Value
Cash	107,335	180,426
Certificates of deposit
Asset at Fair Value
Certificates of deposit	$ 2,369	$ 2,133

Fair Value Disclosure - Assets

Fair Value Disclosure - Assets Measured on Recurring Basis Roll Forward (Details) - Level 3 - Fair Value, Measurements, Recurring - Auction rate securities - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance as of beginning of period	$ 2,643	$ 2,633	$ 2,643	$ 2,633
Total realized gains or (losses) included in net income	0	0	0	0
Total unrealized gains or (losses) included in other comprehensive income	0	0	0	0
Sales and settlements at par	0	0	0	0
Transfers in and/or out of Level 3	0	0	0	0
Balance as of end of period	$ 2,643	$ 2,633	$ 2,643	$ 2,633

Fair Value Disclosure - Long-te

Fair Value Disclosure - Long-term Investments (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Mar. 31, 2017	Jun. 30, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 2,643	$ 2,643
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Short-term and long-term debt	145,511	93,589
Auction rate securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	2,750	2,750
Gross Unrealized Holding Gains	0	0
Gross Unrealized Holding Losses	(107)	(107)
Fair Value	$ 2,643	$ 2,643

Short-term and Long-term Obliga

Short-term and Long-term Obligations - Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Jun. 30, 2016
Debt Instrument [Line Items]
Total debt	$ 145,837	$ 93,589
Less: debt issuance costs	(326)	0
Total debt, net of debt issuance costs	145,511	93,589
Current portion, net of debt issuance costs	(113,260)	(53,589)
Long-term portion, net of debt issuance costs	32,251	40,000
Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Total debt	83,499	72,299
Line of Credit | Bank of America | Bank of America 2016 Credit Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Total debt	63,199
Line of Credit | Bank of America | Bank of America 2015 Credit Agreement | Revolving Credit Facility
Debt Instrument [Line Items]
Total debt		62,199
Line of Credit | CTBC Bank | CTBC 2016 Facility | Revolving Credit Facility
Debt Instrument [Line Items]
Total debt	20,300	10,100
Term Loan | Secured Debt
Debt Instrument [Line Items]
Total debt	62,338	21,290
Term Loan | Bank of America | Bank of America 2016 Credit Agreement | Secured Debt
Debt Instrument [Line Items]
Total debt	42,500
Term Loan | Bank of America | Bank of America 2015 Credit Agreement | Secured Debt
Debt Instrument [Line Items]
Total debt		933
Term Loan | CTBC Bank | CTBC 2016 Facility | Secured Debt
Debt Instrument [Line Items]
Total debt	$ 19,838	$ 20,357

Short-term and Long-term Debt41

Short-term and Long-term Debt Obligations - Bank of America (Details)	May 10, 2017USD ($)	Jun. 30, 2015USD ($)building	Mar. 31, 2017USD ($)	Jun. 30, 2016USD ($)building	Dec. 31, 2016USD ($)
Short-term and Long-term Debt [Line Items]
Debt, total outstanding borrowings			$ 145,837,000	$ 93,589,000
Line of Credit | Revolving Credit Facility
Short-term and Long-term Debt [Line Items]
Debt, total outstanding borrowings			$ 83,499,000	$ 72,299,000
Bank of America | Bank of America 2015 Credit Agreement | Minimum
Short-term and Long-term Debt [Line Items]
Interest rate (as a percent)				1.02%
Bank of America | Bank of America 2015 Credit Agreement | Maximum
Short-term and Long-term Debt [Line Items]
Interest rate (as a percent)				1.96%
Bank of America | Bank of America 2015 Credit Agreement | Line of Credit | Revolving Credit Facility
Short-term and Long-term Debt [Line Items]
Debt, total outstanding borrowings				$ 62,199,000
Bank of America | Bank of America 2015 Credit Agreement | Term Loan | Secured Debt
Short-term and Long-term Debt [Line Items]
Credit facility, term		5 years
Term loan, face amount		$ 14,000,000
Number of buildings as collateral | building		3
Debt, total outstanding borrowings				$ 933,000
Bank of America | Bank of America 2015 Credit Agreement | Term Loan | Secured Debt | LIBOR
Short-term and Long-term Debt [Line Items]
Credit facility, basis spread on variable rate (as a percent)		1.50%
Bank of America | Bank of America 2015 Credit Agreement | Line of Credit | Revolving Credit Facility
Short-term and Long-term Debt [Line Items]
Credit facility, maximum borrowing capacity		$ 65,000,000
Bank of America | Bank of America 2016 Credit Agreement | Minimum
Short-term and Long-term Debt [Line Items]
Interest rate (as a percent)			1.37%
Bank of America | Bank of America 2016 Credit Agreement | Maximum
Short-term and Long-term Debt [Line Items]
Interest rate (as a percent)			2.16%
Bank of America | Bank of America 2016 Credit Agreement | Line of Credit | Revolving Credit Facility
Short-term and Long-term Debt [Line Items]
Debt, total outstanding borrowings			$ 63,199,000
Bank of America | Bank of America 2016 Credit Agreement | Term Loan | Secured Debt
Short-term and Long-term Debt [Line Items]
Credit facility, term				5 years
Term loan, face amount				$ 50,000,000
Number of buildings as collateral | building				7
Debt, total outstanding borrowings			42,500,000
Bank of America | Bank of America 2016 Credit Agreement | Term Loan | Secured Debt | LIBOR
Short-term and Long-term Debt [Line Items]
Credit facility, basis spread on variable rate (as a percent)				1.25%
Bank of America | Bank of America 2016 Credit Agreement | Line of Credit | Revolving Credit Facility
Short-term and Long-term Debt [Line Items]
Credit facility, maximum borrowing capacity				$ 55,000,000
Credit facility, remaining borrowing capacity			$ 1,801,000
Bank of America | Bank of America 2016 Credit Agreement | Line of Credit | Revolving Credit Facility | Super Micro Computer, Taiwan and B.V.
Short-term and Long-term Debt [Line Items]
Credit facility, maximum borrowing capacity				$ 10,000,000
Credit facility, basis spread on variable rate (as a percent)				0.90%
Bank of America | Bank of America 2016 Credit Agreement | Line of Credit | Revolving Credit Facility | LIBOR
Short-term and Long-term Debt [Line Items]
Credit facility, basis spread on variable rate (as a percent)			1.25%
LIBOR rate (as a percent)			0.78%
Bank of America | Bank of America 2016 Credit Agreement | Line of Credit | Letter of Credit
Short-term and Long-term Debt [Line Items]
Credit facility, maximum borrowing capacity				$ 5,000,000
Interest rate, stated percentage			1.25%
Bank of America | Bank of America 2016 Amended Credit Agreement | Line of Credit | Revolving Credit Facility
Short-term and Long-term Debt [Line Items]
Credit facility, maximum borrowing capacity					$ 45,000,000
Bank of America | Bank of America 2016 Amended Credit Agreement | Line of Credit | Revolving Credit Facility | Super Micro Computer, Taiwan and B.V.
Short-term and Long-term Debt [Line Items]
Credit facility, maximum borrowing capacity					$ 20,000,000
Subsequent Event | Bank of America | Bank of America 2017 Amended Credit Agreement | Line of Credit | Revolving Credit Facility
Short-term and Long-term Debt [Line Items]
Credit facility, maximum borrowing capacity	$ 85,000,000
Interest rate, stated percentage	2.24%
Proceeds from lines of credit	$ 20,000,000

Short-term and Long-term Debt42

Short-term and Long-term Debt Obligations - CTBC (Details) - CTBC Bank - CTBC 2016 Facility	1 Months Ended
	Apr. 30, 2016USD ($)	Mar. 31, 2017USD ($)	Jun. 30, 2016USD ($)	Apr. 30, 2016TWD
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity	$ 40,000,000
Credit facility, unused amount		$ 0
Minimum
Debt Instrument [Line Items]
Interest rate (as a percent)		0.94%	0.90%
Maximum
Debt Instrument [Line Items]
Interest rate (as a percent)		1.83%	1.25%
Term Loan | Secured Debt
Debt Instrument [Line Items]
Credit facility, term	12 months
Credit facility, maximum borrowing capacity	$ 21,620,000			TWD 700,000,000
Debt, total outstanding borrowings		$ 19,838,000	$ 20,357,000
Term Loan | Secured Debt | CTBC's Established NTD Interest Rate
Debt Instrument [Line Items]
Credit facility, basis spread on variable rate (as a percent)	0.25%
Term Loan | Customs Bond
Debt Instrument [Line Items]
Credit facility, term	12 months
Credit facility, maximum borrowing capacity	$ 3,089,000			TWD 100,000,000
Interest rate, stated percentage	0.50%			0.50%
Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Credit facility, term	12 months
Credit facility, maximum borrowing capacity	$ 40,000,000
Percent of eligible accounts receivable	80.00%			80.00%
Debt, total outstanding borrowings		$ 20,300,000	$ 10,100,000
Line of Credit | Revolving Credit Facility | CTBC's Established USD Interest Rate
Debt Instrument [Line Items]
Credit facility, basis spread on variable rate (as a percent)	0.30%

Short-term and Long-term Debt43

Short-term and Long-term Debt Obligations - Covenant Compliance (Details)	9 Months Ended
	Mar. 31, 2017USD ($)consecutive_quarter	Jun. 30, 2016USD ($)building
Bank of America | Bank of America 2016 Credit Agreement
Debt Instrument [Line Items]
Number of consecutive fiscal quarters with net operating loss | consecutive_quarter	2
Consolidated leverage ratio	2
Domestic unencumbered liquid assets market value	$ 40,000,000
Bank of America | Bank of America 2016 Credit Agreement | Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Collateral amount	1,049,629,000	$ 934,625,000
Bank of America | Bank of America 2016 Credit Agreement | Term Loan | Secured Debt
Debt Instrument [Line Items]
Collateral amount	97,625,000	$ 59,258,000
Number of buildings as collateral | building		7
CTBC Bank | CTBC 2016 Facility | Term Loan | Secured Debt
Debt Instrument [Line Items]
Collateral amount	$ 26,523,000	$ 26,804,000

Related-party and Other Trans44

Related-party and Other Transactions (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	May 31, 2012	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016	Jun. 30, 2016
Related Party Transaction [Line Items]
Purchases		$ 62,378	$ 55,133	$ 177,513	$ 185,845
Net sales		4,069	4,413	14,414	12,125
Amounts receivable		7,614		7,614		$ 4,678
Amounts payable		50,407		50,407		39,152
Outstanding purchase order		412,541		412,541		334,010
Equity method investment		6,714		6,714
Management Company | Super Micro Asia Science and Technology Park, Inc.
Related Party Transaction [Line Items]
Contribution in variable interest entity	$ 168
Ownership percentage of variable interest entity	50.00%
Management Company | Super Micro Asia Science and Technology Park, Inc. | General and administrative expenses
Related Party Transaction [Line Items]
Net income (loss) attributable to noncontrolling interest		$ 5	13	$ (19)	9
Compuware | Ablecom Technology | Ablecom | Maximum
Related Party Transaction [Line Items]
Ownership percentage		50.00%		50.00%
Super Micro Computer | Ablecom Technology | Investee
Related Party Transaction [Line Items]
Ownership percentage		0.40%		0.40%
Ablecom Technology | Ablecom
Related Party Transaction [Line Items]
Purchases		$ 62,378	55,133	$ 177,513	185,845
Net sales		4,069	4,413	14,414	12,125
Amounts receivable		7,614		7,614		4,678
Amounts payable		50,407		50,407		39,152
Tooling assets and miscellaneous costs paid to related party		1,776	$ 3,003	4,712	$ 5,901
Outstanding purchase order		$ 102,502		$ 102,502		$ 62,782
Ablecom Technology | Ablecom | Minimum
Related Party Transaction [Line Items]
Majority of invoiced dollars paid, number of days				45 days
Ablecom Technology | Ablecom | Maximum
Related Party Transaction [Line Items]
Majority of invoiced dollars paid, number of days				86 days
Ablecom Technology | Charles Liang and Wife | Investee
Related Party Transaction [Line Items]
Ownership percentage		10.50%		10.50%
Ablecom Technology | Steve Liang and Other Family Members | Management and Immediate Family Member of Management
Related Party Transaction [Line Items]
Ownership percentage		36.00%		36.00%
Corporate Venture | Corporate Venture
Related Party Transaction [Line Items]
Equity method investment, ownership percentage		30.00%		30.00%
Deferred gain on contribution of technology rights		$ 6,650		$ 6,650
Corporate Venture | Investor In China | Corporate Venture
Related Party Transaction [Line Items]
Equity method investment, ownership percentage		70.00%		70.00%

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Income Tax Disclosure [Abstract]
Income tax provision	$ 5,140	$ 7,386	$ 20,824	$ 28,951
Effective tax rate (as a percent)	23.60%	30.70%	28.50%	30.80%
Unrecognized tax benefits that would impact effective tax rate, if recognized	$ 17,329		$ 17,329
Interest and penalties relating to unrecognized tax benefits	$ 1,418		$ 1,418

Commitments and Contingencies (

Commitments and Contingencies (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Jun. 30, 2016
Commitments and Contingencies Disclosure [Abstract]
Purchase commitments, total	$ 412,541	$ 334,010

Segment Reporting - Net Sales b

Segment Reporting - Net Sales by Geographic Region (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2017USD ($)	Mar. 31, 2016USD ($)	Mar. 31, 2017USD ($)segment	Mar. 31, 2016USD ($)
Segment Reporting [Abstract]
Number of operating segments | segment			1
Segment Reporting Information [Line Items]
Net sales	$ 631,124	$ 532,721	$ 1,812,046	$ 1,691,303
United States
Segment Reporting Information [Line Items]
Net sales	333,945	326,392	987,357	1,072,126
Europe
Segment Reporting Information [Line Items]
Net sales	114,832	93,279	358,619	294,239
Asia
Segment Reporting Information [Line Items]
Net sales	150,791	78,544	384,872	241,595
Other
Segment Reporting Information [Line Items]
Net sales	$ 31,556	$ 34,506	$ 81,198	$ 83,343

Segment Reporting - Long-lived

Segment Reporting - Long-lived Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Jun. 30, 2016
Segment Reporting Information [Line Items]
Long-lived assets	$ 195,553	$ 187,949
United States
Segment Reporting Information [Line Items]
Long-lived assets	152,051	142,764
Asia
Segment Reporting Information [Line Items]
Long-lived assets	40,949	42,052
Europe
Segment Reporting Information [Line Items]
Long-lived assets	$ 2,553	$ 3,133

Segment Reporting - Net Sales49

Segment Reporting - Net Sales by Product Type (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Segment Reporting Information [Line Items]
Net sales	$ 631,124	$ 532,721	$ 1,812,046	$ 1,691,303
Product concentration risk | Net sales
Segment Reporting Information [Line Items]
Percent of Net Sales	100.00%	100.00%	100.00%	100.00%
Server systems
Segment Reporting Information [Line Items]
Net sales	$ 441,822	$ 372,404	$ 1,243,313	$ 1,182,362
Server systems | Product concentration risk | Net sales
Segment Reporting Information [Line Items]
Percent of Net Sales	70.00%	69.90%	68.60%	69.90%
Subsystems and accessories
Segment Reporting Information [Line Items]
Net sales	$ 189,302	$ 160,317	$ 568,733	$ 508,941
Subsystems and accessories | Product concentration risk | Net sales
Segment Reporting Information [Line Items]
Percent of Net Sales	30.00%	30.10%	31.40%	30.10%

Segment Reporting - Narrative (

Segment Reporting - Narrative (Details) - Net sales	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2016
One Customer | Customer concentration risk
Segment Reporting Information [Line Items]
Concentration risk percentage		10.20%	12.60%
CHINA | Geographic Concentration Risk
Segment Reporting Information [Line Items]
Concentration risk percentage	10.40%