Note 9 Borrowing and Deferred Payment Arrangements	3 Months Ended
Jun. 30, 2014
Debt Disclosure [Abstract]
Debt Disclosure [Text Block]	9. Borrowing and Deferred Payment Arrangements Bank of the West On December 6, 2013, we entered into an Amended and Restated Credit Agreement with Bank of the West, or BOTW, for a revolving line of credit of $50.0 million. All amounts owed under the credit agreement are due and payable on November 30, 2015. Borrowings may be repaid and re-borrowed at any time during the term of the credit agreement. The obligations are guaranteed by two of our subsidiaries. At June 30, 2014, the outstanding principal balance under the credit agreement was $15.0 million. The credit agreement provides different interest rate alternatives under which we may borrow funds. We may elect to borrow based on LIBOR plus a margin, an alternative base rate plus a margin or a floating rate plus a margin. The margin can range from 0.75% to 2.5%, depending on interest rate alternatives and on our leverage of liabilities to effective tangible net worth. The effective interest rate as of June 30, 2014 was 1.94%. An unused commitment fee is also payable. It ranges from 0.25% to 0.625%, depending on leverage. The credit agreement is subject to a set of financial covenants, including minimum effective tangible net worth, the ratio of cash, cash equivalents and accounts receivable to current liabilities, profitability, a leverage ratio and a minimum amount of U.S. domestic cash on hand. At June 30, 2014, we complied with all of these financial covenants. The credit agreement also includes a $3.0 million letter of credit subfacility. See Note 16, “Commitments and Contingencies” for further information regarding the terms of the subfacility. IKB Deutsche Industriebank On June 10, 2005, IXYS Semiconductor GmbH, our German subsidiary, borrowed €10.0 million, or about $12.2 million at the time, from IKB Deutsche Industriebank. This loan is partially collateralized by a security interest in our facility in Lampertheim, Germany and is expected to be paid in full on June 30, 2020. The outstanding balance at June 30, 2014 was €4.0 million, or $5.5 million. The interest rate on the loan is determined by adding the then effective three month Euribor rate and a margin. The margin can range from 0.7% to 1.25%, depending on the calculation of a ratio of indebtedness to cash flow for our German subsidiary. In June 2010, we entered into an interest rate swap agreement commencing June 30, 2010. The swap agreement has a fixed interest rate of 1.99% and expires on June 30, 2015. The effective interest rate on the loan as of June 30, 2014 was 2.69%. The swap is not designated as a hedge in the financial statements. See Note 4, “Fair Value” for further information regarding the derivative contract. During each fiscal quarter, a principal payment of €167,000, or about $228,000, and a payment of accrued interest are required. Financial covenants for a ratio of indebtedness to cash flow, a ratio of equity to total assets and a minimum stockholders' equity for the German subsidiary must be satisfied for the loan to remain in good standing. The loan may be prepaid in whole or in part at the end of a fiscal quarter without penalty. At June 30, 2014, we complied with the financial covenants. The loan is partially collateralized by a security interest in the facility owned by our company in Lampertheim, Germany. Acquired MCU Business Deferred Payments We were obligated to pay $30.0 million in two installment payments of $15.0 million each as partial purchase price for the Acquired MCU Business. The first installment and interest were paid on June 26, 2014 and the second installment is due on December 31, 2014. The installments bear simple interest at a variable annual rate equal to six-month LIBOR plus a 3 percentage point margin. The deferred payments and interest accruals are included in “Accrued expenses and other current liabilities” on our unaudited condensed consolidated balance sheets. The effective interest rate of the deferred payments as of June 30, 2014 was 3.33%. Loans Assumed from Business Acquisition We assumed loans of approximately €459,000, or $632,000, related to an acquisition completed during the quarter ended June 30, 2014. The assumed borrowings were non-interest loans from government agencies to support the research and development activities with maturity dates varying from fiscal 2017 to fiscal 2021, other than a loan of €72,000 from Caixabank, S.A.

Note 9 Borrowing and Deferred Payment Arrangements

3 Months Ended

Jun. 30, 2014

9. Borrowing and Deferred Payment Arrangements

Bank of the West

On December 6, 2013, we entered into an Amended and Restated Credit Agreement with Bank of the West, or BOTW, for a revolving line of credit of $50.0 million. All amounts owed under the credit agreement are due and payable on November 30, 2015. Borrowings may be repaid and re-borrowed at any time during the term of the credit agreement. The obligations are guaranteed by two of our subsidiaries. At June 30, 2014, the outstanding principal balance under the credit agreement was $15.0 million.

The credit agreement provides different interest rate alternatives under which we may borrow funds. We may elect to borrow based on LIBOR plus a margin, an alternative base rate plus a margin or a floating rate plus a margin. The margin can range from 0.75% to 2.5%, depending on interest rate alternatives and on our leverage of liabilities to effective tangible net worth. The effective interest rate as of June 30, 2014 was 1.94%. An unused commitment fee is also payable. It ranges from 0.25% to 0.625%, depending on leverage.

The credit agreement is subject to a set of financial covenants, including minimum effective tangible net worth, the ratio of cash, cash equivalents and accounts receivable to current liabilities, profitability, a leverage ratio and a minimum amount of U.S. domestic cash on hand. At June 30, 2014, we complied with all of these financial covenants.

The credit agreement also includes a $3.0 million letter of credit subfacility. See Note 16, “Commitments and Contingencies” for further information regarding the terms of the subfacility.

IKB Deutsche Industriebank

On June 10, 2005, IXYS Semiconductor GmbH, our German subsidiary, borrowed €10.0 million, or about $12.2 million at the time, from IKB Deutsche Industriebank. This loan is partially collateralized by a security interest in our facility in Lampertheim, Germany and is expected to be paid in full on June 30, 2020. The outstanding balance at June 30, 2014 was €4.0 million, or $5.5 million.

The interest rate on the loan is determined by adding the then effective three month Euribor rate and a margin. The margin can range from 0.7% to 1.25%, depending on the calculation of a ratio of indebtedness to cash flow for our German subsidiary. In June 2010, we entered into an interest rate swap agreement commencing June 30, 2010. The swap agreement has a fixed interest rate of 1.99% and expires on June 30, 2015. The effective interest rate on the loan as of June 30, 2014 was 2.69%. The swap is not designated as a hedge in the financial statements. See Note 4, “Fair Value” for further information regarding the derivative contract.

During each fiscal quarter, a principal payment of €167,000, or about $228,000, and a payment of accrued interest are required. Financial covenants for a ratio of indebtedness to cash flow, a ratio of equity to total assets and a minimum stockholders' equity for the German subsidiary must be satisfied for the loan to remain in good standing. The loan may be prepaid in whole or in part at the end of a fiscal quarter without penalty. At June 30, 2014, we complied with the financial covenants. The loan is partially collateralized by a security interest in the facility owned by our company in Lampertheim, Germany.

Acquired MCU Business Deferred Payments

We were obligated to pay $30.0 million in two installment payments of $15.0 million each as partial purchase price for the Acquired MCU Business. The first installment and interest were paid on June 26, 2014 and the second installment is due on December 31, 2014. The installments bear simple interest at a variable annual rate equal to six-month LIBOR plus a 3 percentage point margin. The deferred payments and interest accruals are included in “Accrued expenses and other current liabilities” on our unaudited condensed consolidated balance sheets. The effective interest rate of the deferred payments as of June 30, 2014 was 3.33%.

Loans Assumed from Business Acquisition

We assumed loans of approximately €459,000, or $632,000, related to an acquisition completed during the quarter ended June 30, 2014. The assumed borrowings were non-interest loans from government agencies to support the research and development activities with maturity dates varying from fiscal 2017 to fiscal 2021, other than a loan of €72,000 from Caixabank, S.A.

- Definition

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

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