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Subsequent Events	9 Months Ended
Subsequent Events	Dec. 31, 2012
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On January 23, 2013, the Board of Directors approved a quarterly cash dividend of $0.175 per share on the Company’s outstanding shares of common stock, payable to shareholders of record as of March 15, 2013 with an expected distribution date on or about April 5, 2013. In January 2013, Congress enacted a tax law to extend the Federal research and development tax credit ("R&D Credit") retroactive to January 1, 2012 and through December 31, 2013. As a result of the timing of this legislative change, the Company was not entitled to recognize any portion of the expected tax benefit relating to the 2012 R&D Credit for the nine months ended December 31, 2012. The full expected fiscal year benefit of this credit will be recognized in the provision for income taxes in the quarter ended March 31, 2013.