Debt	12 Months Ended
Jun. 30, 2012
Debt	K. Debt SENIOR SECURED CREDIT FACILITY Original Loan Agreement On February 12, 2010, the Company entered into a loan and security agreement (the “Loan Agreement”) with Silicon Valley Bank (the “Lender”). The Loan Agreement provided for a $15,000 revolving line of credit (the “Revolver”) and a $20,000 acquisition line (the “Term Loan”). The Revolver was available for borrowing during a two-year period, with interest payable monthly and the principal due at the February 11, 2012 maturity of the Revolver. The Term Loan was available for up to three separate borrowings, with total borrowings not to exceed $20,000, until February 11, 2012. The Term Loan had monthly interest and principal payments through the February 11, 2014 maturity of the Term Loan. The interest rates include various rate options that are available to the Company. The rates are calculated using a combination of conventional base rate measures plus a margin over those rates. The base rates consist of LIBOR rates and prime rates. The actual rates will depend on the level of these underlying rates plus a margin based on the Company’s leverage at the time of borrowing. Borrowings are secured by a first-priority security interest in all of the Company’s domestic assets, including intellectual property, but limited to 65% of the voting stock of foreign subsidiaries. The Company’s MFS subsidiary is a guarantor and has granted a security interest in its assets in favor of the Lender. Following the acquisition of LNX Corporation, LNX also became a guarantor. The Lender may require Mercury Computer Systems Limited, the Company’s United Kingdom subsidiary, or Nihon Mercury Computer Systems, K.K., the Company’s Japanese subsidiary, to provide guarantees in the future if the cash or assets of such subsidiary exceed specified levels. The Loan Agreement provided for conventional affirmative and negative covenants, including a minimum quick ratio of 1.5 to 1.0. If the Company had less than $10,000 of cash equivalents in accounts with the Lender in excess of the Company’s borrowings, the Company must also satisfy a $15,000 minimum trailing-four-quarter cash-flow covenant. The minimum cash flow covenant is calculated as the Company’s trailing-four quarter adjusted EBITDA as defined in the Loan Agreement. In addition, the Loan Agreement contains certain customary representations and warranties and limits the Company’s and its subsidiaries’ ability to incur liens, dispose of assets, carry out certain mergers and acquisitions, make investments and capital expenditures and defines events of default and limitations on the Company and its subsidiaries to incur additional debt. Amended Loan Agreement On March 30, 2011, the Company entered into an amendment to the Loan Agreement (as amended, the “Amended Loan Agreement”) with the Lender. The amendment extended the term of the Revolver for an additional two years, to February 11, 2014, terminated the $20,000 Term Loan under the original Loan Agreement, increased the original $15,000 Revolver to $35,000. The amendment also included modifications to the financial covenants as summarized below. The Amended Loan Agreement provides for conventional affirmative and negative covenants, including a minimum quick ratio of 1.0 to 1.0 and a $15,000 minimum trailing four quarter cash flow covenant through and including June 30, 2012 (with $17,500 of minimum cash flow required thereafter). There are no other changes to the Loan Agreement other than the modification described above. Following the acquisition of KOR Electronics, both KOR and PDI became guarantors. The Company has had no borrowings under the credit facility since inception and was in compliance with all covenants in the Amended Loan Agreement as of June 30, 2012.

K. Debt

SENIOR SECURED CREDIT FACILITY

Original Loan Agreement

On February 12, 2010, the Company entered into a loan and security agreement (the “Loan Agreement”) with Silicon Valley Bank (the “Lender”). The Loan Agreement provided for a $15,000 revolving line of credit (the “Revolver”) and a $20,000 acquisition line (the “Term Loan”). The Revolver was available for borrowing during a two-year period, with interest payable monthly and the principal due at the February 11, 2012 maturity of the Revolver. The Term Loan was available for up to three separate borrowings, with total borrowings not to exceed $20,000, until February 11, 2012. The Term Loan had monthly interest and principal payments through the February 11, 2014 maturity of the Term Loan.

The interest rates include various rate options that are available to the Company. The rates are calculated using a combination of conventional base rate measures plus a margin over those rates. The base rates consist of LIBOR rates and prime rates. The actual rates will depend on the level of these underlying rates plus a margin based on the Company’s leverage at the time of borrowing.

Borrowings are secured by a first-priority security interest in all of the Company’s domestic assets, including intellectual property, but limited to 65% of the voting stock of foreign subsidiaries. The Company’s MFS subsidiary is a guarantor and has granted a security interest in its assets in favor of the Lender. Following the acquisition of LNX Corporation, LNX also became a guarantor. The Lender may require Mercury Computer Systems Limited, the Company’s United Kingdom subsidiary, or Nihon Mercury Computer Systems, K.K., the Company’s Japanese subsidiary, to provide guarantees in the future if the cash or assets of such subsidiary exceed specified levels.

The Loan Agreement provided for conventional affirmative and negative covenants, including a minimum quick ratio of 1.5 to 1.0. If the Company had less than $10,000 of cash equivalents in accounts with the Lender in excess of the Company’s borrowings, the Company must also satisfy a $15,000 minimum trailing-four-quarter cash-flow covenant. The minimum cash flow covenant is calculated as the Company’s trailing-four quarter adjusted EBITDA as defined in the Loan Agreement. In addition, the Loan Agreement contains certain customary representations and warranties and limits the Company’s and its subsidiaries’ ability to incur liens, dispose of assets, carry out certain mergers and acquisitions, make investments and capital expenditures and defines events of default and limitations on the Company and its subsidiaries to incur additional debt.

Amended Loan Agreement

On March 30, 2011, the Company entered into an amendment to the Loan Agreement (as amended, the “Amended Loan Agreement”) with the Lender. The amendment extended the term of the Revolver for an additional two years, to February 11, 2014, terminated the $20,000 Term Loan under the original Loan Agreement, increased the original $15,000 Revolver to $35,000. The amendment also included modifications to the financial covenants as summarized below.

The Amended Loan Agreement provides for conventional affirmative and negative covenants, including a minimum quick ratio of 1.0 to 1.0 and a $15,000 minimum trailing four quarter cash flow covenant through and including June 30, 2012 (with $17,500 of minimum cash flow required thereafter).

There are no other changes to the Loan Agreement other than the modification described above.

Following the acquisition of KOR Electronics, both KOR and PDI became guarantors.

The Company has had no borrowings under the credit facility since inception and was in compliance with all covenants in the Amended Loan Agreement as of June 30, 2012.