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Income Taxes	3 Months Ended
Income Taxes	Jun. 30, 2011
Income Taxes [Abstract]
Income Taxes	NOTE 12. INCOME TAXES During the three months ended June 30, 2011 and 2010, our income tax provision was $1.3 million, based on an effective tax rate of 37%, and $2.3 million, based on an effective tax rate of 39%, respectively. The decrease in the effective tax rate during the three months ended June 30, 2011, as compared to the three months ended June 30, 2010, was primarily due to lower state tax expenses resulting from the change in California to a single factor apportionment and an increase in federal research and development tax credits during the three months ended June 30, 2011. We did not have any unrecognized tax benefits as of June 30, 2011 or June 30, 2010. During the three months ended June 30, 2011 and 2010, we did not recognize any interest or penalties related to unrecognized tax benefits.

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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-Paragraph 136, 172
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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-Paragraph 43, 44, 45, 46, 47, 48, 49
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
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-Publisher FASB
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Reference 7: http://www.xbrl.org/2003/role/presentationRef
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Reference 8: http://www.xbrl.org/2003/role/presentationRef
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+ Details