Total additional borrowing limit that can be requested under Tranche A of line of credit agreement.

No definition available.

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Increments in which total additional borrowing limit under Tranche A of line of credit agreement can be requested.

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No definition available.

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Line of credit facility tranche A extended maximum borrowing capacity.

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Number of tranches under credit facility.

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Required minimum excess availability of borrowing base.

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

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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.

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No definition available.

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

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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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No definition available.

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For an unclassified balance sheet, the amount as of the balance sheet date of capitalized costs associated with the issuance of debt instruments (for example, legal, accounting, underwriting, printing, and registration costs) that will be charged against earnings over the life of the debt instruments to which such costs pertain. Such amount is before the consideration of accumulated amortization.

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

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No definition available.

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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.

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Average amount borrowed under the credit facility during the period.

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No definition available.

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

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The effective interest rate at the end of the reporting period.

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Maximum amount borrowed under the credit facility at any time during the period.

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

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

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No definition available.

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The carrying value as of the balance sheet date of the current portion 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.

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Including the current and noncurrent portions, carrying value at the balance sheet date of a financial instrument used to receive debt funding on a regular basis with original maturities ranging from 5-10 years.

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Line of Credit and Long-Term Debt - Additional Information (Details) (USD $)	0 Months Ended		3 Months Ended	4 Months Ended
	Jun. 03, 2015	Nov. 01, 2012	May 02, 2015 Tranches	Jan. 31, 2015	May 03, 2014
Debt Instrument [Line Items]
Senior secured revolving credit facility		$ 61,000,000
Line of credit maturity date			Nov. 01, 2017
Additional permitted borrowings under Tranche A	15,000,000	15,000,000
Increments of additional permitted borrowings under Tranche A		2,500,000
Credit Facility extended maximum limit		70,000,000
Credit Facility Tranches			2
Revolving credit facility period		5 years
Minimum excess availability on borrowing base		10.00%
Unused line fee under the Credit Facility		0.25%
Credit Facility Description of Variable Rate Basis			The interest rate on outstanding borrowings is equal to, at the Company’s election, either 1) the lender’s base rate plus the applicable margin, or 2) a LIBOR rate plus the applicable margin. The applicable margin for base rate borrowings is 0.50% for Tranche A borrowings and 2.00% for Tranche A-1 borrowings. The applicable margin for LIBOR rate borrowings is 1.50% for Tranche A borrowings and 3.00% for Tranche A-1 borrowings. Tranche A-1 borrowings are deemed to be the first loans made and the last loans repaid.
Deferred financing costs			988,000us-gaap_DeferredFinanceCostsGross
Outstanding borrowings under Credit Facility			18,700,000us-gaap_LinesOfCreditCurrent		0us-gaap_LinesOfCreditCurrent
Letters of credit			7,374,000		7,211,000
Line of credit availability			34,926,000		53,789,000
Line of credit, outstanding borrowings			21,131,000
Line of credit borrowings during period			31,800,000
Tranche A-1
Debt Instrument [Line Items]
Senior secured revolving credit facility		6,000,000
Outstanding borrowings under Credit Facility			6,000,000
Borrowings interest rate			5.10%
Tranche A-1 \| Base Rate
Debt Instrument [Line Items]
Applicable margin rate		2.00%
Tranche A-1 \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Applicable margin rate		3.00%
Tranche A
Debt Instrument [Line Items]
Senior secured revolving credit facility		55,000,000
Outstanding borrowings under Credit Facility			12,700,000
Borrowings interest rate			3.70%
Tranche A \| Base Rate
Debt Instrument [Line Items]
Applicable margin rate		0.50%
Tranche A \| London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Applicable margin rate		1.50%
Equipment Loan
Debt Instrument [Line Items]
Proceeds from equipment financing arrangement			14,077,000	15,000,000
Percentage of interest on equipment financing arrangement				3.38%
Monthly payments for equipment financing arrangement				272,000
Debt instrument maturity date				Dec. 31, 2019
Prior Credit Facility
Debt Instrument [Line Items]
Senior secured revolving credit facility		$ 55,000,000