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Long-term Debt and Other Credit Arrangements - Additional Information (Detail) (USD $)	1 Months Ended
	May 06, 2013	May 06, 2013 Term Loan A [Member]	May 06, 2013 Term Loan A [Member] August 1, 2017 [Member]	May 06, 2013 Term Loan A [Member] September 1, 2017 [Member]	May 06, 2013 Term Loan B [Member]	May 06, 2013 Line of Credit [Member]	Oct. 31, 2013 Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Loan agreement	$ 20,000,000
Credit facility outstanding		3,450,000			1,550,000		2,475,000
Letters of credit	4,700,000
Interest rate description	Indebtedness under the Line of Credit bears interest at a variable rate per annum equal to Daily One Month LIBOR plus 1.5% per annum
Percentage of interest over one month LIBOR					1.575%	1.50%
Periodic payments			$ 17,000	$ 79,000	$ 18,000
Term loan, Payment terms		Payments are due under Term Loan A in consecutive equal monthly principal payments in the amount of $17,000 until August 1, 2017, and then in consecutive equal monthly principal payments in the amount of $79,000 each, commencing on September 1, 2017 and continuing on the first business day of each month thereafter until May 1, 2020, and at that time, all principal, accrued unpaid interest and other charges outstanding under Term Loan A shall be due and payable in full.			Payments in the amount of $18,000 until May 1, 2020, and at that time, all principal
Fixed rate percentage		4.875%	4.37%		3.07%
Loan agreement, Maturity date	May 01, 2016	May 01, 2020			May 01, 2020

X

- Definition

Maximum outstanding capacity for issuance of letters of credit under the credit facility.

+ References

No definition available.

+ Details

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Period Type:	instant

X

- 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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X

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5



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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

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-Subparagraph (SX 210.5-02.22(a)(1))

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X

- Definition

Amount borrowed under the credit facility as of the balance sheet date.

+ References

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

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X

- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

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- Definition

Description of the frequency of the required periodic payments of interest, principal, or both, and the amount, if set, or a description of a formula upon which payment is based.

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- Definition

Description of the interest rate for the amounts borrowed under the credit facility, including the terms and the method for determining the interest rate (for example, fixed or variable, LIBOR plus a percentage, increasing rate, timing of interest rate resets, remarketing provisions).

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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.

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Amount of the required periodic payments of both interest and principal.

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