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Long-term Debt (Details) (USD $) |  | 12 Months Ended |  | 12 Months Ended |  | 12 Months Ended |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 31, 2013 | Mar. 31, 2013 Credit facility quarter tier | Mar. 31, 2013 Credit facility Minimum | Mar. 31, 2013 Credit facility Maximum | Mar. 31, 2013 Credit facility LIBOR | Mar. 31, 2013 Credit facility LIBOR Minimum | Mar. 31, 2013 Credit facility LIBOR Maximum | Mar. 31, 2013 Credit facility CBFR using bank prime rate | Mar. 31, 2013 Credit facility CBFR using bank prime rate Minimum | Mar. 31, 2013 Credit facility CBFR using bank prime rate Maximum | Mar. 31, 2013 Credit facility CBFR using one month LIBOR | Mar. 31, 2013 Credit facility CBFR using one month LIBOR Minimum | Mar. 31, 2013 Credit facility CBFR using one month LIBOR Maximum | Mar. 31, 2013 Letters of credit | Apr. 30, 2010 Reducing line of credit | Apr. 30, 2013 Revolving line of credit | May 31, 2012 Revolving line of credit | Mar. 31, 2013 Revolving line of credit | Apr. 30, 2010 Revolving line of credit
Debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit | $ 4,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 4,000,000 |
Long-term portion | 4,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Effective rate of interest | 1.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, term |  | 3 years |  |  |  |  |  |  |  |  |  |  |  |  | 36 months |  |  |  |
Maximum borrowing capacity |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,000,000 | 3,000,000 |  |  | 20,000,000 | 4,000,000
Description of variable rate basis |  |  |  |  | LIBOR |  |  | Prime rate |  |  | One month LIBOR |  |  |  |  |  |  |  |
Spread on variable rate (as a percent) |  |  |  |  |  | 1.25% | 2.00% |  | (0.50%) | (1.25%) |  | (0.50%) | (1.25%) |  |  |  |  |  |
Spread on variable rate used to calculate CBFR (as a percent) |  |  |  |  |  |  |  |  |  |  | 2.50% |  |  |  |  |  |  |  |
Unused capacity fee (as a percent) |  |  | 0.15% | 0.30% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of trailing quarters of EBITDA used to calculate ratio of funded debt to EBITDA |  | 4 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of defined tiers of ratio of funded debt to EBITDA |  | 4 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
High end of ratio of funded debt to the entity's trailing four quarters of EBIDTA for unused capacity fees |  |  | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Low end of ratio of funded debt to the entity's trailing four quarters of EBIDTA for unused capacity fees |  |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ratio of funded debt to EBIDTA required to be maintained |  | 2.5 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed charge coverage ratio, required to be maintained |  |  | 1.5 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Borrowings for facilitating acquisition |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 11,000,000 |  |
Principal repayments |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,000,000 |  | 7,000,000 |
Fiscal year |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2015 | 4,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit | 4,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,000,000 |
Periodic principal amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Required quarterly principal payment |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 250,000 |  |  |  |

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- Definition Represents the number of trailing fiscal quarters of EBITDA used in calculating the ratio of funded debt to the entity's consolidated EBITDA. This ratio is used as the basis for the determination of applicable interest rate adjustments and unused capacity fees. + References No definition available. + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 129 -Paragraph 2, 4 -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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