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Income Taxes (Details Textual) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Mar. 31, 2013 | Mar. 31, 2012 | Mar. 31, 2011
Income Taxes (Textual) [Abstract] |  |  |
Valuation allowance | $ 564 | $ 420 |
Income Taxes (Additional Textual) [Abstract] |  |  |
Deferred income taxes include the impact of state investment tax credits | 202 |  |
State investment tax credits with an unlimited carryforward period | 362 |  |
Deferred income taxes include the impact of foreign net operating losses carryforwards | 603 |  |
Percentage of tax credits claimed reduction | 30.00% | 40.00% |
Unrecognized tax benefit tax credits claimed | 134 | 1,787 | 1,365
Additional unrecognized tax benefit |  | 882 |
Liability unrecognized tax benefits | 134 | 905 |
Interest uncertain tax positions | (320) | 259 | 87
Penalties related to uncertain tax positions | 0 | 0 | 0
Maximum [Member] |  |  |
Income Taxes (Textual) [Abstract] |  |  |
Expire date of state investment tax credits | 2027 |  |
Expire date of foreign net operating losses carryforwards | 2017 |  |
Maximum [Member] | Federal tax jurisdictions [Member] |  |  |
Income Taxes (Textual) [Abstract] |  |  |
Federal and State tax jurisdictions for tax period | 2012 |  |
Maximum [Member] | State tax jurisdictions [Member] |  |  |
Income Taxes (Textual) [Abstract] |  |  |
Federal and State tax jurisdictions for tax period | 2012 |  |
Maximum [Member] | International tax jurisdictions [Member] |  |  |
Income Taxes (Textual) [Abstract] |  |  |
Federal and State tax jurisdictions for tax period | 2012 |  |
Minimum [Member] |  |  |
Income Taxes (Textual) [Abstract] |  |  |
Expire date of state investment tax credits | 2014 |  |
Expire date of foreign net operating losses carryforwards | 2014 |  |
Minimum [Member] | Federal tax jurisdictions [Member] |  |  |
Income Taxes (Textual) [Abstract] |  |  |
Federal and State tax jurisdictions for tax period | 2011 |  |
Minimum [Member] | State tax jurisdictions [Member] |  |  |
Income Taxes (Textual) [Abstract] |  |  |
Federal and State tax jurisdictions for tax period | 2008 |  |
Minimum [Member] | International tax jurisdictions [Member] |  |  |
Income Taxes (Textual) [Abstract] |  |  |
Federal and State tax jurisdictions for tax period | 2010 |  |
State investment tax credits [Member] |  |  |
Income Taxes (Textual) [Abstract] |  |  |
Valuation allowance | 372 |  |
Foreign operating losses carryforwards [Member] |  |  |
Income Taxes (Textual) [Abstract] |  |  |
Valuation allowance | $ 48 |  |

X
- Definition The gross amount of unrecognized tax benefit pertaining to an additional uncertain tax position taken in tax returns as of the balance sheet date. + References No definition available. + Details
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- Definition Deferred tax assets tax deferred expense state investment tax credit expiration period. + References No definition available. + Details
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- Definition The amount of deferred income tax assets pertaining to state investment tax credits that have expiration dates. + References No definition available. + Details
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- Definition The amount of deferred income tax assets pertaining to state investment tax credits that have an unlimited carryforward period. + References No definition available. + Details
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- Definition Percentage of tax credits claimed reduction. + References No definition available. + Details
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- Definition The gross amount of unrecognized tax benefit pertaining to uncertain tax position for the research and development tax credit taken in tax returns as of the balance sheet date. + References No definition available. + Details
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- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 43-49 -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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 17 -Subparagraph e -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. + Details
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- Definition The sum of domestic, foreign and state and local operating loss carryforwards, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 48 -Subparagraph a -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. + Details
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- Definition The expiration date of each operating loss carryforward included in total operating loss carryforwards, or the applicable range of such expiration dates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32559-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 48 -Subparagraph a -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. + Details
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- Definition The gross amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Unrecognized Tax Benefit -URI http://asc.fasb.org/extlink&oid=6527854 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 21 -Subparagraph a -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. + Details
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- Definition This element represents the recognized expense for the amount of statutory penalties in the period in which the entity claims or expects to claim a tax position, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties or, if not recognizing the expense in the period in which the tax return was initially filed, the expense is generally recognized in the period in which the enterprise's judgment about meeting the minimum statutory threshold changes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 21 -Subparagraph c -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 FASB Interpretation (FIN) -Number 48 -Paragraph 16 -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. + Details
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- Definition This element represents interest expense recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 48 -Paragraph 21 -Subparagraph c -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 FASB Interpretation (FIN) -Number 48 -Paragraph 15 -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. + Details
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