Income Taxes	9 Months Ended
Mar. 31, 2019
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Malibu Boats, Inc. is taxed as a C corporation for U.S. income tax purposes and is therefore subject to both federal and state taxation at a corporate level. The LLC continues to operate in the United States as a partnership for U.S. federal income tax purposes. Income taxes are computed in accordance with ASC Topic 740, Income Taxes, and reflect the net tax effects of temporary differences between the financial reporting carrying amounts of assets and liabilities and the corresponding income tax amounts. The Company has deferred tax assets and liabilities and maintains valuation allowances where it is more likely than not that all or a portion of deferred tax assets will not be realized. To the extent the Company determines that it will not realize the benefit of some or all of its deferred tax assets, such deferred tax assets will be adjusted through the Company’s provision for income taxes in the period in which this determination is made. As of March 31, 2019 and June 30, 2018, the Company maintained a valuation allowance of $13,298 and $12,716, respectively, against deferred tax assets related to state net operating losses and future amortization deductions (with respect to the Section 754 election) that are reported in the Tennessee corporate tax return without offsetting income, which is taxable at the LLC. The increase in the valuation allowance is due to the exchanges of LLC Units into Class A common stock by certain LLC Unit holders during the nine months ended March 31, 2019. Also as of March 31, 2019, a valuation allowance was recorded in the amount of $761 related to foreign tax credit carryforward that is not expected to be utilized in the future. On December 22, 2017, the Tax Act was enacted which, among a number of its provisions, lowered the U.S. corporate tax rate from 35% to 21%, effective January 1, 2018. The Company’s consolidated interim effective tax rate is based upon expected annual income from operations, statutory tax rates and tax laws in the various jurisdictions in which the Company operates. Significant or unusual items, including those related to the change in U.S. tax law noted above as well as other adjustments to accruals for tax uncertainties, are recognized in the quarter in which the related event occurs. On October 15, 2018, the Company completed its acquisition of Pursuit. This did not have a significant impact to the effective tax rate. For the three months ended March 31, 2019 and 2018, the Company's effective tax rate was 24.8% and 27.1%, respectively. For the nine months ended March 31, 2019 and 2018, the Company's effective tax rate was 23.4% and 76.2%, respectively. For the three months ended March 31, 2019, the Company's effective tax rate exceeded the statutory federal income tax rate of 21% primarily due to the impact of U.S. state taxes and remeasurement of deferred taxes. This increase was partially offset by the benefits of the foreign derived intangible income deduction, the research and development tax credit and the impact of non-controlling interests in the LLC. For the three and nine months ended March 31, 2018, the principal differences in the Company's effective tax rate with the blended statutory federal income tax rate of approximately 28% relates to the remeasurement of deferred taxes. Additionally, the Company's effective tax rate for the three months ended March 31, 2018 is related to impact of the non-controlling interests in the LLC, a pass-through entity for U.S. federal tax purposes, state income taxes attributable to the LLC, and the benefit of deductions under Section 199 of the Internal Revenue Code.

Income Taxes

Malibu Boats, Inc. is taxed as a C corporation for U.S. income tax purposes and is therefore subject to both federal and state taxation at a corporate level. The LLC continues to operate in the United States as a partnership for U.S. federal income tax purposes.

Income taxes are computed in accordance with ASC Topic 740, Income Taxes, and reflect the net tax effects of temporary differences between the financial reporting carrying amounts of assets and liabilities and the corresponding income tax amounts. The Company has deferred tax assets and liabilities and maintains valuation allowances where it is more likely than not that all or a portion of deferred tax assets will not be realized. To the extent the Company determines that it will not realize the benefit of some or all of its deferred tax assets, such deferred tax assets will be adjusted through the Company’s provision for income taxes in the period in which this determination is made.

As of March 31, 2019 and June 30, 2018, the Company maintained a valuation allowance of $13,298 and $12,716, respectively, against deferred tax assets related to state net operating losses and future amortization deductions (with respect to the Section 754 election) that are reported in the Tennessee corporate tax return without offsetting income, which is taxable at the LLC. The increase in the valuation allowance is due to the exchanges of LLC Units into Class A common stock by certain LLC Unit holders during the nine months ended March 31, 2019. Also as of March 31, 2019, a valuation allowance was recorded in the amount of $761 related to foreign tax credit carryforward that is not expected to be utilized in the future.

On December 22, 2017, the Tax Act was enacted which, among a number of its provisions, lowered the U.S. corporate tax rate from 35% to 21%, effective January 1, 2018. The Company’s consolidated interim effective tax rate is based upon expected annual income from operations, statutory tax rates and tax laws in the various jurisdictions in which the Company operates. Significant or unusual items, including those related to the change in U.S. tax law noted above as well as other adjustments to accruals for tax uncertainties, are recognized in the quarter in which the related event occurs.

On October 15, 2018, the Company completed its acquisition of Pursuit. This did not have a significant impact to the effective tax rate. For the three months ended March 31, 2019 and 2018, the Company's effective tax rate was 24.8% and 27.1%, respectively. For the nine months ended March 31, 2019 and 2018, the Company's effective tax rate was 23.4% and 76.2%, respectively. For the three months ended March 31, 2019, the Company's effective tax rate exceeded the statutory federal income tax rate of 21% primarily due to the impact of U.S. state taxes and remeasurement of deferred taxes. This increase was partially offset by the benefits of the foreign derived intangible income deduction, the research and development tax credit and the impact of non-controlling interests in the LLC. For the three and nine months ended March 31, 2018, the principal differences in the Company's effective tax rate with the blended statutory federal income tax rate of approximately 28% relates to the remeasurement of deferred taxes. Additionally, the Company's effective tax rate for the three months ended March 31, 2018 is related to impact of the non-controlling interests in the LLC, a pass-through entity for U.S. federal tax purposes, state income taxes attributable to the LLC, and the benefit of deductions under Section 199 of the Internal Revenue Code.