Employee Benefit Plans	12 Months Ended
Mar. 31, 2012
Compensation and Retirement Disclosure [Abstract]
Employee Benefit Plans [Text Block]	EMPLOYEE BENEFIT PLANS The Company maintains a contributory profit-sharing plan for its domestic employees meeting certain eligibility and service requirements. The plan qualifies under Section 401(k) of the Internal Revenue Code of 1986, as amended, and allows employees to contribute up to 60% of their base salary, subject to maximum annual limitations prescribed by the IRS. Through December 31, 2008, the Company made matching contributions of up to 25% of the first 4% of the participant's eligible compensation and could award up to an additional 25% under the discretionary match. The Company eliminated the mandatory matching contribution as of January 1, 2009. All matches are provided on a quarterly basis and require the participant to be an active employee at the end of each quarter. For the fiscal year ended March 31, 2012, the Company contributions to the plan totaled $1.6 million. For the fiscal year ended March 31, 2011, the Company contributions to the plan totaled $2.3 million. Due to expense reduction actions taken in response to adverse economic conditions, the Company did not contribute to the plan for the fiscal year ended March 31, 2010. The Company's 2001 Employee Stock Purchase Plan (the 2001 Purchase Plan) became effective on March 1, 2002. The Board of Directors approved the 2001 Purchase Plan in May 2001 and the stockholders approved it in August 2001. Under the 2001 Purchase Plan, eligible employees of the Company may purchase shares of common stock at semi-annual intervals through periodic payroll deductions. The purchase price in general will be 85% of the lower of the fair market value of the common stock on the first day of the participant's entry date into the offering period or of the fair market value on the semi-annual purchase date. Depending upon a participant's entry date into the 2001 Purchase Plan, purchase periods under the 2001 Purchase Plan consist of overlapping periods of either 24, 18, 12 or 6 months in duration. In May 2003 and August 2003, the Company's Board and stockholders, respectively, each approved an annual automatic increase in the number of shares reserved under the 2001 Purchase Plan. The automatic increase took effect on January 1, 2005, and on each January 1 thereafter during the term of the plan, and is equal to the lesser of (i) 1,500,000, (ii) one half of one percent (0.5%) of the then outstanding shares of the Company's common stock, or (iii) such lesser amount as is approved by board of directors. On January 1, 2012, an additional 960,269 shares were reserved under the 2001 Purchase Plan based on the automatic increase. On January 1, 2011 an additional 941,530 shares were reserved under the 2001 Purchase Plan based on the automatic increase. On January 1, 2010, an additional 921,171 shares were reserved under the 2001 Purchase Plan based on the automatic increase. Since the inception of the 2001 Purchase Plan, 11,277,862 shares of common stock have been reserved for issuance and 4,639,761 shares have been issued under this purchase plan. During fiscal 1995, a purchase plan was adopted for employees in non-U.S. locations. Such plan provided for the purchase price per share to be 100% of the lower of the fair market value of the common stock at the beginning or end of the semi-annual purchase plan period. Effective May 1, 2006, the Company's Board approved a purchase price per share equal to 85% of the lower of the fair market value of the common stock at the beginning or end of the semi-annual purchase plan period. Since the inception of this purchase plan, 1,500,285 shares of common stock have been reserved for issuance and 610,507 shares have been issued under this purchase plan. Effective January 1, 1997, the Company adopted a non-qualified deferred compensation arrangement. This plan is unfunded and is maintained primarily for the purpose of providing deferred compensation for a select group of highly compensated employees as defined in ERISA Sections 201, 301 and 401. There are no Company matching contributions made under this plan. The Company has management incentive compensation plans which provide for bonus payments, based on a percentage of base salary, from an incentive pool created from operating profits of the Company, at the discretion of the Board of Directors. During the years ended March 31, 2012, 2011 and 2010, $7.8 million, $28.3 million and $16.5 million were charged against operations for these plans, respectively. The Company also has a plan that, at the discretion of the Board of Directors, provides a cash bonus to all employees of the Company based on the operating profits of the Company. During the years ended March 31, 2012, 2011 and 2010, $3.2 million, $16.0 million and $4.3 million, respectively, were charged against operations for this plan.

EMPLOYEE BENEFIT PLANS

The Company maintains a contributory profit-sharing plan for its domestic employees meeting certain eligibility and service requirements. The plan qualifies under Section 401(k) of the Internal Revenue Code of 1986, as amended, and allows employees to contribute up to 60% of their base salary, subject to maximum annual limitations prescribed by the IRS. Through December 31, 2008, the Company made matching contributions of up to 25% of the first 4% of the participant's eligible compensation and could award up to an additional 25% under the discretionary match. The Company eliminated the mandatory matching contribution as of January 1, 2009. All matches are provided on a quarterly basis and require the participant to be an active employee at the end of each quarter. For the fiscal year ended March 31, 2012, the Company contributions to the plan totaled $1.6 million. For the fiscal year ended March 31, 2011, the Company contributions to the plan totaled $2.3 million. Due to expense reduction actions taken in response to adverse economic conditions, the Company did not contribute to the plan for the fiscal year ended March 31, 2010.

The Company's 2001 Employee Stock Purchase Plan (the 2001 Purchase Plan) became effective on March 1, 2002. The Board of Directors approved the 2001 Purchase Plan in May 2001 and the stockholders approved it in August 2001. Under the 2001 Purchase Plan, eligible employees of the Company may purchase shares of common stock at semi-annual intervals through periodic payroll deductions. The purchase price in general will be 85% of the lower of the fair market value of the common stock on the first day of the participant's entry date into the offering period or of the fair market value on the semi-annual purchase date. Depending upon a participant's entry date into the 2001 Purchase Plan, purchase periods under the 2001 Purchase Plan consist of overlapping periods of either 24, 18, 12 or 6 months in duration. In May 2003 and August 2003, the Company's Board and stockholders, respectively, each approved an annual automatic increase in the number of shares reserved under the 2001 Purchase Plan. The automatic increase took effect on January 1, 2005, and on each January 1 thereafter during the term of the plan, and is equal to the lesser of (i) 1,500,000, (ii) one half of one percent (0.5%) of the then outstanding shares of the Company's common stock, or (iii) such lesser amount as is approved by board of directors. On January 1, 2012, an additional 960,269 shares were reserved under the 2001 Purchase Plan based on the automatic increase. On January 1, 2011 an additional 941,530 shares were reserved under the 2001 Purchase Plan based on the automatic increase. On January 1, 2010, an additional 921,171 shares were reserved under the 2001 Purchase Plan based on the automatic increase. Since the inception of the 2001 Purchase Plan, 11,277,862 shares of common stock have been reserved for issuance and 4,639,761 shares have been issued under this purchase plan.

During fiscal 1995, a purchase plan was adopted for employees in non-U.S. locations. Such plan provided for the purchase price per share to be 100% of the lower of the fair market value of the common stock at the beginning or end of the semi-annual purchase plan period. Effective May 1, 2006, the Company's Board approved a purchase price per share equal to 85% of the lower of the fair market value of the common stock at the beginning or end of the semi-annual purchase plan period. Since the inception of this purchase plan, 1,500,285 shares of common stock have been reserved for issuance and 610,507 shares have been issued under this purchase plan.

Effective January 1, 1997, the Company adopted a non-qualified deferred compensation arrangement. This plan is unfunded and is maintained primarily for the purpose of providing deferred compensation for a select group of highly compensated employees as defined in ERISA Sections 201, 301 and 401. There are no Company matching contributions made under this plan.

The Company has management incentive compensation plans which provide for bonus payments, based on a percentage of base salary, from an incentive pool created from operating profits of the Company, at the discretion of the Board of Directors. During the years ended March 31, 2012, 2011 and 2010, $7.8 million, $28.3 million and $16.5 million were charged against operations for these plans, respectively.

The Company also has a plan that, at the discretion of the Board of Directors, provides a cash bonus to all employees of the Company based on the operating profits of the Company. During the years ended March 31, 2012, 2011 and 2010, $3.2 million, $16.0 million and $4.3 million, respectively, were charged against operations for this plan.