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Long-Term Debt - Additional Information (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	May 23, 2018	Aug. 04, 2018	Jul. 29, 2017	Aug. 04, 2018	Jul. 29, 2017	Feb. 03, 2018
Debt Instrument [Line Items]
Line of credit facility, amount outstanding	$ 135,400
Repayment of prior term loan				$ 135,127	$ 800
Debt instrument discount at issuance						$ 678
Unamortized debt issuance costs		$ 410		410		1,110
Amortization of discount		620	$ 58	678	100
Amortization of debt issuance costs		1,018	$ 92	1,131	$ 168
New Term Loan
Debt Instrument [Line Items]
Debt instrument issuance price, percentage of aggregate principal amount	100.00%
New term loan	$ 40,000
Term loan		40,000		40,000
Debt instrument discount at issuance		0		0
Unamortized debt issuance costs		$ 410		410
New Term Loan | Beginning in October 31, 2018
Debt Instrument [Line Items]
Quarterly loan payment	2,000
Prior Term Loan
Debt Instrument [Line Items]
Repayment of prior term loan	$ 134,700
Extinguishment of the Term Loan				$ 1,617
Term loan						135,127
Debt instrument discount at issuance						678
Unamortized debt issuance costs						$ 1,110
LIBOR | New Term Loan
Debt Instrument [Line Items]
Term loan interest rate (as a percent)	5.75%

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Debt instrument issuance price percentage of face amount.

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Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

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Amount of amortization expense attributable to debt issuance costs.

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

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Face (par) amount of debt instrument at time of issuance.

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Gross amount of debt extinguished.

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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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The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

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