Restatement of Previously Issued Consolidated Financial Statements - Impact on Consolidated Balance Sheet (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Current assets:
Cash and cash equivalents	$ 110,606	$ 178,820	$ 92,920	$ 95,482
Accounts receivable, net	324,004	174,933
Inventories	736,668	516,807
Prepaid income taxes	675	4,341
Prepaid expenses and other current assets	89,213	79,427
Total current assets	1,261,166	954,328
Long-term investments	2,625	2,643
Property, plant and equipment, net	195,576	187,949
Deferred income taxes - noncurrent		33,678
Other assets	10,577	12,885
Total assets	1,515,130	1,191,483
Current liabilities:
Accounts payable	396,895	267,391
Accrued liabilities	112,824	83,596
Income taxes payable	1,364	5,054
Short-term debt and current portion of long-term debt, net of debt issuance costs	161,447	53,589
Total current liabilities	672,530	409,630
Long-term debt	0	40,000
Other long-term liabilities	68,754	45,200
Total liabilities	741,284	494,830
Stockholders’ equity:
Common stock and additional paid-in capital	308,271	279,465
Treasury stock	(20,491)	(2,030)
Accumulated other comprehensive loss	(77)	(85)
Retained earnings	485,973	419,119
Total Super Micro Computer, Inc. stockholders’ equity	773,676	696,469
Noncontrolling interest	170	184
Total stockholders’ equity	773,846	696,653	593,585	452,158
Total liabilities and stockholders’ equity	1,515,130	1,191,483
Allowance for doubtful accounts receivable		2,413
Accounts receivable, related party	6,877	49
Prepaid expenses, related party	13,327	9,622
Accounts payable, related party	55,928	44,941
Accrued liabilities, related party	$ 8,450	5,354
As Previously Reported
Current assets:
Cash and cash equivalents		180,964	95,442	96,872
Accounts receivable, net		288,941
Inventories		448,980
Prepaid income taxes		5,682
Prepaid expenses and other current assets		13,435
Total current assets		938,002
Long-term investments		2,643
Property, plant and equipment, net		187,949
Deferred income taxes - noncurrent		28,460
Other assets		8,546
Total assets		1,165,600
Current liabilities:
Accounts payable		249,239
Accrued liabilities		55,618
Income taxes payable		5,172
Short-term debt and current portion of long-term debt, net of debt issuance costs		53,589
Total current liabilities		363,618
Long-term debt		40,000
Other long-term liabilities		40,603
Total liabilities		444,221
Stockholders’ equity:
Common stock and additional paid-in capital		277,339
Treasury stock		(2,030)
Accumulated other comprehensive loss		(85)
Retained earnings		445,971
Total Super Micro Computer, Inc. stockholders’ equity		721,195
Noncontrolling interest		184
Total stockholders’ equity		721,379		469,231
Total liabilities and stockholders’ equity		1,165,600
Allowance for doubtful accounts receivable		2,721
Accounts receivable, related party		4,678
Prepaid expenses, related party		0
Accounts payable, related party		39,152
Accrued liabilities, related party		0
Restatement adjustment
Current assets:
Cash and cash equivalents		(2,144)	$ (2,522)	$ (1,390)
Stockholders’ equity:
Accounts receivable, related party		(4,629)
Prepaid expenses, related party		9,622
Accounts payable, related party		5,789
Accrued liabilities, related party		5,354
Restatement adjustment | Product Revenue Recognition
Current assets:
Accounts receivable, net		(60,590)
Inventories		48,714
Total current assets		(11,876)
Total assets		(11,876)
Current liabilities:
Accounts payable		5
Accrued liabilities		(128)
Total current liabilities		(123)
Total liabilities		(123)
Stockholders’ equity:
Retained earnings		(11,753)
Total Super Micro Computer, Inc. stockholders’ equity		(11,753)
Total stockholders’ equity		(11,753)
Total liabilities and stockholders’ equity		(11,876)
Restatement adjustment | Services Revenue Recognition
Current assets:
Total current assets		0
Total assets		0
Current liabilities:
Accrued liabilities		9,313
Total current liabilities		9,313
Other long-term liabilities		4,597
Total liabilities		13,910
Stockholders’ equity:
Retained earnings		(13,910)
Total Super Micro Computer, Inc. stockholders’ equity		(13,910)
Total stockholders’ equity		(13,910)
Total liabilities and stockholders’ equity		0
Restatement adjustment | Inventories
Current assets:
Inventories		18,205
Total current assets		18,205
Total assets		18,205
Current liabilities:
Accounts payable		2,981
Accrued liabilities		16,251
Total current liabilities		19,232
Total liabilities		19,232
Stockholders’ equity:
Retained earnings		(1,027)
Total Super Micro Computer, Inc. stockholders’ equity		(1,027)
Total stockholders’ equity		(1,027)
Total liabilities and stockholders’ equity		18,205
Restatement adjustment | Other
Current assets:
Cash and cash equivalents		(2,144)
Accounts receivable, net		(53,418)
Inventories		908
Prepaid expenses and other current assets		65,992
Total current assets		11,338
Other assets		4,339
Total assets		15,677
Current liabilities:
Accounts payable		15,166
Accrued liabilities		2,542
Total current liabilities		17,708
Total liabilities		17,708
Stockholders’ equity:
Common stock and additional paid-in capital		2,067
Retained earnings		(4,098)
Total Super Micro Computer, Inc. stockholders’ equity		(2,031)
Total stockholders’ equity		(2,031)
Total liabilities and stockholders’ equity		15,677
Restatement adjustment | Income Taxes
Current assets:
Prepaid income taxes		(1,341)
Total current assets		(1,341)
Deferred income taxes - noncurrent		5,218
Total assets		3,877
Current liabilities:
Income taxes payable		(118)
Total current liabilities		(118)
Total liabilities		(118)
Stockholders’ equity:
Common stock and additional paid-in capital		59
Retained earnings		3,936
Total Super Micro Computer, Inc. stockholders’ equity		3,995
Total stockholders’ equity		3,995
Total liabilities and stockholders’ equity		$ 3,877