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Organization and Summary of Significant Accounting Policies - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Jun. 30, 2019	Jun. 30, 2012
Supplier concentration risk | Purchases, Total
Concentration Risk [Line Items]
Concentration risk percentage	28.50%	23.40%	28.60%	21.50%
Supplier concentration risk | Purchases | Ablecom Technology
Concentration Risk [Line Items]
Concentration risk percentage	10.30%		10.00%
Supplier concentration risk | Purchases | Compuware
Concentration Risk [Line Items]
Concentration risk percentage		9.30%		9.20%
Customer concentration risk | Accounts receivable | One customer
Concentration Risk [Line Items]
Concentration risk percentage					17.00%
Management Company | Super Micro Asia Science and Technology Park, Inc.
Concentration Risk [Line Items]
Contribution in variable interest entity						$ 0.2
Ownership percentage of variable interest entity						50.00%
Minimum
Concentration Risk [Line Items]
Product warranty, term			15 months
Maximum
Concentration Risk [Line Items]
Product warranty, term			39 months

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