Represents the interest coverage ratio for the trailing twelve month period.

No definition available.

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- Definition

Represents the trailing period over which the interest coverage ratio is measured.

+ References

No definition available.

+ Details

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- Definition

The maximum amount of liquidity of domestic operations that would require the Company to maintain an interest coverage ratio of one to one.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The minimum amount of liquidity of domestic operations that would allow the Company unrestricted access to the Credit Agreement.

+ References

No definition available.

+ Details

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- References

No definition available.

+ Details

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Period Type:	duration

- Definition

Represents the amount of additional borrowings by which the maximum borrowing capacity on credit facility may be increased at the option of the reporting entity pursuant to the terms of the credit agreement.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Interest and debt related expenses associated with nonoperating financing activities of the entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391

+ Details

Name:	us-gaap_InterestAndDebtExpense
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

Name:	us-gaap_LettersOfCreditOutstandingAmount
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.16)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.16)
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 19, 20, 22
-Article 5

+ Details

Name:	us-gaap_LineOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- 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

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_DebtInstrumentAxis=us-gaap_LineOfCreditMember
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- Details

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- Details

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- Details

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- Details

Name:	us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
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- Details

Name:	us-gaap_DebtInstrumentAxis=us-gaap_LetterOfCreditMember
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DEBT - CREDIT AGREEMENT (Details)	1 Months Ended	12 Months Ended
DEBT - CREDIT AGREEMENT (Details)	Apr. 30, 2016 USD ($)	Mar. 31, 2017 USD ($)	Mar. 31, 2016 USD ($)	Mar. 31, 2015 USD ($)
Credit Agreement
Credit Agreement
Maximum borrowing capacity	$ 100,000,000
Amount of additional borrowings by which maximum borrowing capacity may be increased	$ 100,000,000
Outstanding borrowings		$ 0	$ 0
Credit Agreement Availability
Minimum liquidity level allowing unrestricted access to the Credit Agreement		300,000,000
Available borrowings		98,320,000	98,335,000
Outstanding letters of credit		1,664,000	1,664,000
Interest expense and fees		$ 441,000	$ 438,000	$ 518,000
Trailing period for measurement of interest coverage ratio	12 months
Maximum liquidity level triggering the requirement to maintain an interest coverage ratio of one to one	$ 30,000,000
Credit Agreement \| Minimum
Credit Agreement
Monthly fee on unused available balance (as a percent)	0.25%
Credit Agreement Availability
Interest coverage ratio	1
Credit Agreement \| Maximum
Credit Agreement
Monthly fee on unused available balance (as a percent)	0.375%
Credit Agreement \| Base rate
Credit Agreement
Interest rate at end of period (as a percent)		4.25%
Credit Agreement \| Base rate \| Minimum
Credit Agreement
Interest rate added to base rate (as a percent)	0.25%
Credit Agreement \| Base rate \| Maximum
Credit Agreement
Interest rate added to base rate (as a percent)	0.75%
Credit Agreement \| LIBOR
Credit Agreement
Interest rate at end of period (as a percent)		2.23%
Interest rate, variable rate basis		LIBOR
Credit Agreement \| LIBOR \| Minimum
Credit Agreement
Interest rate added to base rate (as a percent)	1.25%
Credit Agreement \| LIBOR \| Maximum
Credit Agreement
Interest rate added to base rate (as a percent)	1.75%
Letter of Credit
Credit Agreement
Maximum borrowing capacity	$ 5,000,000