Revolving Credit Facilities and Mortgage Payable	12 Months Ended
Mar. 31, 2017
Debt Disclosure [Abstract]
Revolving Credit Facilities and Mortgage Payable	Revolving Credit Facilities and Mortgage Payable Domestic Credit Facility In November 2014, the Company amended its revolving credit facility agreement with JPMorgan Chase Bank, National Association (JPMorgan) as the administrative agent, Comerica and HSBC as co-syndication agents, and the lenders party thereto, in its entirety (as amended, the Second Amended and Restated Credit Agreement) (Domestic Credit Facility). In August 2015, the Company entered into an additional amendment to the Second Amended and Restated Credit Agreement to add certain foreign subsidiaries as borrowers, and in October 2016, further amended the Second Amended and Restated Credit Agreement to allow increased borrowing under its China Credit Facility (as defined below). The Domestic Credit Facility is a five-year, $400,000 secured revolving credit facility that contains a $75,000 sublimit for the issuance of letters of credit and a $5,000 sublimit for swingline loans, and which matures on November 13, 2019. Subject to customary conditions and the approval of any lender whose commitment would be increased, the Company has the option to increase the maximum principal amount available under the Domestic Credit Facility by up to an additional $200,000, resulting in a maximum available principal amount of $600,000. No lender under the Domestic Credit Facility has committed at this time or is obligated to provide any such increase in the commitments. In addition to allowing borrowings in US dollars, the Domestic Credit Facility provides a $150,000 sublimit for borrowings in Euros, British Pounds and any other currency that is subsequently approved by JPMorgan, each lender and the issuing bank. As of March 31, 2017, the Company had debt capacity of approximately $378,000 out of $400,000, due to limitations on consolidated worldwide borrowings under the terms of the Domestic Credit Facility. At the Company's election, interest under the Domestic Credit Facility is tied to the adjusted London Interbank Offered Rate (LIBOR) or the Alternative Base Rate (ABR), and is variable based on the Company's total adjusted leverage ratio each quarter. The initial adjusted LIBOR rate is equal to the effective LIBOR rate for the interest period elected, plus 1.25% per annum, or at the ABR plus 0.25% per annum, and thereafter the interest rate will fluctuate between adjusted LIBOR plus 1.25% per annum and adjusted LIBOR plus 2.00% per annum (or between the ABR plus 0.25% per annum and the ABR plus 1.00% per annum), based upon the Company's total adjusted leverage ratio at such time. The ABR is defined in the Second Amended and Restated Credit Agreement as the rate per annum equal to the greater of (1) the prime rate, (2) the federal funds effective rate plus 0.50% and (3) the adjusted LIBOR rate for a one-month interest period plus 1.00%. In addition, the Company is initially required to pay commitment fees of 0.175% per annum on the daily amount of the available borrowings under the Domestic Credit Facility, and thereafter the fee rate will fluctuate between 0.175% and 0.30% per annum, based upon the Company's total adjusted leverage ratio. As of March 31, 2017, the adjusted LIBOR and ABR rates were 2.48% and 4.50%, respectively. The Company's obligations under the Domestic Credit Facility are guaranteed by the Company's existing and future wholly-owned domestic subsidiaries (other than certain immaterial subsidiaries, foreign subsidiaries, foreign subsidiary holding companies and specified excluded subsidiaries) (Guarantors), and are secured by a first-priority security interest in substantially all of the assets of the Company and the Guarantors, including all or a portion of the equity interests of certain of the Company's domestic and first-tier foreign subsidiaries. The Domestic Credit Facility is governed by financial covenants which include: the total adjusted leverage ratio must not be greater than 3.25 to 1.00; the sum of the consolidated annual earnings before interest, taxes, depreciation, and amortization and annual rental expense, divided by the sum of the annual interest expense and the annual rental expense must be greater than 2.25 to 1.00 on a pro-forma basis; and other customary limitations. The Domestic Credit Facility is governed by certain other covenants which include: the maximum amount paid for capital expenditures may not exceed $110,000 per year if the total adjusted leverage ratio is equal to or exceeds 2.75 to 1.00; the maximum additional unsecured debt may not exceed $200,000; the Company may not have aggregate Employee Retirement Income Security Act of 1974 events that are considered materially adverse; the Company may not have a change of control (as defined in the Second Amended and Restated Credit Agreement); and no restrictions on cash dividends, share repurchases or acquisitions may be made, provided that no event of default has occurred or is continuing, and that the total adjusted leverage ratio does not exceed 2.75 to 1.00 on a pro-forma basis. During the year ended March 31, 2017, the Company borrowed approximately $332,000 and repaid approximately $385,000 under the Domestic Credit Facility. As of March 31, 2017, the Company had no outstanding balance under the Domestic Credit Facility and had outstanding letters of credit of approximately $549. As a result, the available borrowings under the Domestic Credit Facility were approximately $378,000 at March 31, 2017. Amounts outstanding are included in short-term borrowings in the consolidated balance sheets. As of March 31, 2017, the Company had a remaining balance of approximately $1,000 in deferred financing costs related to previous amendments to the Domestic Credit Facility included in prepaid expenses in the consolidated balance sheets. This amount is being amortized ratably over the five year term of the Second Amended and Restated Credit Agreement. Subsequent to March 31, 2017, the Company made no additional borrowings, resulting in no outstanding balance and available borrowings of approximately $378,000 under the Domestic Credit Facility at May 30, 2017. China Credit Facility In August 2013, Deckers (Beijing) Trading Co., LTD (DBTC), a wholly-owned subsidiary of the Company, entered into a revolving credit facility agreement in China (as amended, China Credit Facility) that provided for an uncommitted revolving line of credit of up to CNY 60,000, or approximately $9,000, in the quarters ending September 30th and December 31st and CNY 20,000, or approximately $3,000, in the quarters ending March 31st and June 30th. In December 2013, the China Credit Facility was amended to provide for the uncommitted revolving line of credit of up to CNY 60,000 to be extended to the entire year. In October 2014, the China Credit Facility was further amended to include, among other things, an extension of the aggregate period of borrowing from 12 months to 18 months. In October 2015, the China Credit Facility was further amended to include an increase in the uncommitted revolving line of credit of up to CNY 150,000, or approximately $22,000, including a sublimit of CNY 50,000, or approximately $7,000, for the Company's wholly-owned subsidiary, Deckers Footwear (Shanghai) Co., LTD (DFSC) and to reduce the aggregate period of borrowing from 18 to 12 months. In October 2016, the China Credit Facility was further amended to include an increase in the uncommitted revolving line of credit of up to CNY 300,000, or approximately $44,000, and to remove the sublimit of CNY 50,000, or approximately $7,000, for DFSC. In March 2017, the China Credit Facility was amended to remove DFSC, leaving DBTC as the remaining borrower. The China Credit Facility is payable on demand and subject to annual review and renewal. The obligations under the China Credit Facility are guaranteed by the Company for 108.5% of the facility amount in US dollars. Interest is based on 110.0% of the People’s Bank of China rate, which was 4.35% as of March 31, 2017. During the year ended March 31, 2017, the Company borrowed approximately $35,000 and repaid approximately $48,000 under the China Credit Facility. As of March 31, 2017, the Company had no outstanding balance under the China Credit Facility and had available borrowings of approximately $44,000. Amounts outstanding are included in short-term borrowings in the consolidated balance sheets. Subsequent to March 31, 2017, the Company made no additional borrowings, resulting in no outstanding balance and available borrowings of approximately $44,000 under the China Credit Facility at May 30, 2017. Japan Credit Facility In March 2016, Deckers Japan, G.K., a wholly-owned subsidiary of the Company, entered into a revolving credit facility agreement in Japan (Japan Credit Facility) that provides for an uncommitted revolving line of credit of up to JPY 5,500,000, or approximately $49,000, for a maximum term of six months for each draw on the facility. The Japan Credit Facility renews annually, and is guaranteed by the Company. The Company has renewed the Japan Credit Facility through January 31, 2018 under the terms of the original agreement. Interest is based on the Tokyo Interbank Offered Rate (TIBOR) for three months plus 0.40%. As of March 31, 2017, TIBOR for three months was 0.06% and the effective interest rate was 0.46%. The Japan Credit Facility has customary covenants including a restriction against having losses for two consecutive years, maintaining an interest coverage ratio greater than 1.00 to 1.00, and maintaining higher assets than liabilities. During the year ended March 31, 2017, the Company borrowed approximately $38,000 and repaid approximately $35,000 under the Japan Credit Facility. As of March 31, 2017, the Company had no outstanding balance under the Japan Credit Facility and had available borrowings of approximately $49,000. Amounts outstanding are included in short-term borrowings in the consolidated balance sheets. Subsequent to March 31, 2017, the Company made no additional borrowings, resulting in no outstanding balance and available borrowings of approximately $49,000 under the Japan Credit Facility at May 30, 2017. Mortgage In July 2014, the Company obtained a mortgage secured by its corporate headquarters property for approximately $33,900. As of March 31, 2017, the outstanding principal balance under the mortgage was approximately $32,631, which includes approximately $549 in short-term borrowings and approximately $32,082 in mortgage payable in the consolidated balance sheets. The mortgage has a fixed interest rate of 4.928%. Payments include interest and principal in an amount that amortizes the principal balance over a 30-year period; however, the loan will mature and have a balloon payment, due on July 1, 2029 of approximately $23,700, in addition to any then-outstanding balance. Minimum principal payments over the next five years are approximately $3,040. In December 2014, the mortgage financial covenants were amended to be consistent with the financial covenants that govern the Domestic Credit Facility, discussed above. As of March 31, 2017, the Company was in compliance with all debt covenants under its borrowing arrangements and remains in compliance at May 30, 2017. The borrowing and repayment amounts disclosed above for the China Credit Facility and Japan Credit Facility have been translated into US dollars using average currency exchange rates in effect as of the borrowing and repayment dates during the fiscal year 2017. The outstanding balance or available borrowing amounts disclosed above for the China Credit Facility and Japan Credit Facility have been translated into US dollars using spot rates in effect as of March 31, 2017. As a result, there are differences between the debt balances within this footnote disclosure due to foreign currency exchange rates.

Revolving Credit Facilities and Mortgage Payable

Domestic Credit Facility

In November 2014, the Company amended its revolving credit facility agreement with JPMorgan Chase Bank, National Association (JPMorgan) as the administrative agent, Comerica and HSBC as co-syndication agents, and the lenders party thereto, in its entirety (as amended, the Second Amended and Restated Credit Agreement) (Domestic Credit Facility). In August 2015, the Company entered into an additional amendment to the Second Amended and Restated Credit Agreement to add certain foreign subsidiaries as borrowers, and in October 2016, further amended the Second Amended and Restated Credit Agreement to allow increased borrowing under its China Credit Facility (as defined below). The Domestic Credit Facility is a five-year, $400,000 secured revolving credit facility that contains a $75,000 sublimit for the issuance of letters of credit and a $5,000 sublimit for swingline loans, and which matures on November 13, 2019. Subject to customary conditions and the approval of any lender whose commitment would be increased, the Company has the option to increase the maximum principal amount available under the Domestic Credit Facility by up to an additional $200,000, resulting in a maximum available principal amount of $600,000. No lender under the Domestic Credit Facility has committed at this time or is obligated to provide any such increase in the commitments. In addition to allowing borrowings in US dollars, the Domestic Credit Facility provides a $150,000 sublimit for borrowings in Euros, British Pounds and any other currency that is subsequently approved by JPMorgan, each lender and the issuing bank. As of March 31, 2017, the Company had debt capacity of approximately $378,000 out of $400,000, due to limitations on consolidated worldwide borrowings under the terms of the Domestic Credit Facility.

At the Company's election, interest under the Domestic Credit Facility is tied to the adjusted London Interbank Offered Rate (LIBOR) or the Alternative Base Rate (ABR), and is variable based on the Company's total adjusted leverage ratio each quarter. The initial adjusted LIBOR rate is equal to the effective LIBOR rate for the interest period elected, plus 1.25% per annum, or at the ABR plus 0.25% per annum, and thereafter the interest rate will fluctuate between adjusted LIBOR plus 1.25% per annum and adjusted LIBOR plus 2.00% per annum (or between the ABR plus 0.25% per annum and the ABR plus 1.00% per annum), based upon the Company's total adjusted leverage ratio at such time. The ABR is defined in the Second Amended and Restated Credit Agreement as the rate per annum equal to the greater of (1) the prime rate, (2) the federal funds effective rate plus 0.50% and (3) the adjusted LIBOR rate for a one-month interest period plus 1.00%.

In addition, the Company is initially required to pay commitment fees of 0.175% per annum on the daily amount of the available borrowings under the Domestic Credit Facility, and thereafter the fee rate will fluctuate between 0.175% and 0.30% per annum, based upon the Company's total adjusted leverage ratio. As of March 31, 2017, the adjusted LIBOR and ABR rates were 2.48% and 4.50%, respectively.

The Company's obligations under the Domestic Credit Facility are guaranteed by the Company's existing and future wholly-owned domestic subsidiaries (other than certain immaterial subsidiaries, foreign subsidiaries, foreign subsidiary holding companies and specified excluded subsidiaries) (Guarantors), and are secured by a first-priority security interest in substantially all of the assets of the Company and the Guarantors, including all or a portion of the equity interests of certain of the Company's domestic and first-tier foreign subsidiaries.

The Domestic Credit Facility is governed by financial covenants which include: the total adjusted leverage ratio must not be greater than 3.25 to 1.00; the sum of the consolidated annual earnings before interest, taxes, depreciation, and amortization and annual rental expense, divided by the sum of the annual interest expense and the annual rental expense must be greater than 2.25 to 1.00 on a pro-forma basis; and other customary limitations. The Domestic Credit Facility is governed by certain other covenants which include: the maximum amount paid for capital expenditures may not exceed $110,000 per year if the total adjusted leverage ratio is equal to or exceeds 2.75 to 1.00; the maximum additional unsecured debt may not exceed $200,000; the Company may not have aggregate Employee Retirement Income Security Act of 1974 events that are considered materially adverse; the Company may not have a change of control (as defined in the Second Amended and Restated Credit Agreement); and no restrictions on cash dividends, share repurchases or acquisitions may be made, provided that no event of default has occurred or is continuing, and that the total adjusted leverage ratio does not exceed 2.75 to 1.00 on a pro-forma basis.

During the year ended March 31, 2017, the Company borrowed approximately $332,000 and repaid approximately $385,000 under the Domestic Credit Facility. As of March 31, 2017, the Company had no outstanding balance under the Domestic Credit Facility and had outstanding letters of credit of approximately $549. As a result, the available borrowings under the Domestic Credit Facility were approximately $378,000 at March 31, 2017. Amounts outstanding are included in short-term borrowings in the consolidated balance sheets. As of March 31, 2017, the Company had a remaining balance of approximately $1,000 in deferred financing costs related to previous amendments to the Domestic Credit Facility included in prepaid expenses in the consolidated balance sheets. This amount is being amortized ratably over the five year term of the Second Amended and Restated Credit Agreement.

Subsequent to March 31, 2017, the Company made no additional borrowings, resulting in no outstanding balance and available borrowings of approximately $378,000 under the Domestic Credit Facility at May 30, 2017.

China Credit Facility

In August 2013, Deckers (Beijing) Trading Co., LTD (DBTC), a wholly-owned subsidiary of the Company, entered into a revolving credit facility agreement in China (as amended, China Credit Facility) that provided for an uncommitted revolving line of credit of up to CNY 60,000, or approximately $9,000, in the quarters ending September 30th and December 31st and CNY 20,000, or approximately $3,000, in the quarters ending March 31st and June 30th. In December 2013, the China Credit Facility was amended to provide for the uncommitted revolving line of credit of up to CNY 60,000 to be extended to the entire year. In October 2014, the China Credit Facility was further amended to include, among other things, an extension of the aggregate period of borrowing from 12 months to 18 months. In October 2015, the China Credit Facility was further amended to include an increase in the uncommitted revolving line of credit of up to CNY 150,000, or approximately $22,000, including a sublimit of CNY 50,000, or approximately $7,000, for the Company's wholly-owned subsidiary, Deckers Footwear (Shanghai) Co., LTD (DFSC) and to reduce the aggregate period of borrowing from 18 to 12 months. In October 2016, the China Credit Facility was further amended to include an increase in the uncommitted revolving line of credit of up to CNY 300,000, or approximately $44,000, and to remove the sublimit of CNY 50,000, or approximately $7,000, for DFSC. In March 2017, the China Credit Facility was amended to remove DFSC, leaving DBTC as the remaining borrower.

The China Credit Facility is payable on demand and subject to annual review and renewal. The obligations under the China Credit Facility are guaranteed by the Company for 108.5% of the facility amount in US dollars. Interest is based on 110.0% of the People’s Bank of China rate, which was 4.35% as of March 31, 2017.

During the year ended March 31, 2017, the Company borrowed approximately $35,000 and repaid approximately $48,000 under the China Credit Facility. As of March 31, 2017, the Company had no outstanding balance under the China Credit Facility and had available borrowings of approximately $44,000. Amounts outstanding are included in short-term borrowings in the consolidated balance sheets.

Subsequent to March 31, 2017, the Company made no additional borrowings, resulting in no outstanding balance and available borrowings of approximately $44,000 under the China Credit Facility at May 30, 2017.

Japan Credit Facility

In March 2016, Deckers Japan, G.K., a wholly-owned subsidiary of the Company, entered into a revolving credit facility agreement in Japan (Japan Credit Facility) that provides for an uncommitted revolving line of credit of up to JPY 5,500,000, or approximately $49,000, for a maximum term of six months for each draw on the facility. The Japan Credit Facility renews annually, and is guaranteed by the Company. The Company has renewed the Japan Credit Facility through January 31, 2018 under the terms of the original agreement. Interest is based on the Tokyo Interbank Offered Rate (TIBOR) for three months plus 0.40%. As of March 31, 2017, TIBOR for three months was 0.06% and the effective interest rate was 0.46%. The Japan Credit Facility has customary covenants including a restriction against having losses for two consecutive years, maintaining an interest coverage ratio greater than 1.00 to 1.00, and maintaining higher assets than liabilities.

During the year ended March 31, 2017, the Company borrowed approximately $38,000 and repaid approximately $35,000 under the Japan Credit Facility. As of March 31, 2017, the Company had no outstanding balance under the Japan Credit Facility and had available borrowings of approximately $49,000. Amounts outstanding are included in short-term borrowings in the consolidated balance sheets.

Subsequent to March 31, 2017, the Company made no additional borrowings, resulting in no outstanding balance and available borrowings of approximately $49,000 under the Japan Credit Facility at May 30, 2017.

Mortgage

In July 2014, the Company obtained a mortgage secured by its corporate headquarters property for approximately $33,900. As of March 31, 2017, the outstanding principal balance under the mortgage was approximately $32,631, which includes approximately $549 in short-term borrowings and approximately $32,082 in mortgage payable in the consolidated balance sheets. The mortgage has a fixed interest rate of 4.928%. Payments include interest and principal in an amount that amortizes the principal balance over a 30-year period; however, the loan will mature and have a balloon payment, due on July 1, 2029 of approximately $23,700, in addition to any then-outstanding balance. Minimum principal payments over the next five years are approximately $3,040. In December 2014, the mortgage financial covenants were amended to be consistent with the financial covenants that govern the Domestic Credit Facility, discussed above.

As of March 31, 2017, the Company was in compliance with all debt covenants under its borrowing arrangements and remains in compliance at May 30, 2017.

The borrowing and repayment amounts disclosed above for the China Credit Facility and Japan Credit Facility have been translated into US dollars using average currency exchange rates in effect as of the borrowing and repayment dates during the fiscal year 2017. The outstanding balance or available borrowing amounts disclosed above for the China Credit Facility and Japan Credit Facility have been translated into US dollars using spot rates in effect as of March 31, 2017. As a result, there are differences between the debt balances within this footnote disclosure due to foreign currency exchange rates.