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Debt and Lines of Credit (Narrative) (Details) - USD ($) | 12 Months Ended
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Jan. 31, 2016 | Feb. 01, 2015
Revolving Credit Facility [Member] |  |
Debt Instrument [Line Items] |  |
Debt instrument, maturity date | Jul. 31, 2018 |
Debt instrument, effective rate | 1.70% |
Line of credit facility maximum borrowing capacity | $ 40,000,000 |
London interbank offered rate (LIBOR) | Revolving Credit Facility [Member] |  |
Debt Instrument [Line Items] |  |
Debt instrument, percentage point added to LIBOR rate | 1.25% |
Mortgage Note Due May 2019 [Member] |  |
Debt Instrument [Line Items] |  |
Debt, original balance |  | $ 600,000
Debt instrument, maturity date | May 31, 2019 |
Required monthly principal payments |  | $ 5,300
Debt instrument stated percentage interest rate |  | 4.00%
Minimum [Member] | Revolving Credit Facility [Member] |  |
Debt Instrument [Line Items] |  |
Debt covenants, EBITDA period | 12 months |
SRV [Member] |  |
Debt Instrument [Line Items] |  |
Outstanding borrowing |  | $ 600,000
SRV [Member] | Revolving Credit Facility [Member] |  |
Debt Instrument [Line Items] |  |
Line of credit facility maximum borrowing capacity |  | 600,000
Outstanding borrowing |  | $ 600,000
Line of credit facility, description | The outstanding balance was paid in full and the agreement terminated in February 2015. |
SRV [Member] | London interbank offered rate (LIBOR) | Revolving Credit Facility [Member] |  |
Debt Instrument [Line Items] |  |
Debt instrument, percentage point added to LIBOR rate |  | 1.50%
SRV [Member] | SRV Mortgage Note Due September 2017 [Member] |  |
Debt Instrument [Line Items] |  |
Debt, original balance | $ 800,000 |
Debt instrument, maturity date | Sep. 30, 2017 |
Required monthly principal payments | $ 3,300 |
Debt instrument stated percentage interest rate | 3.10% |
SRV [Member] | SRV Mortgage Note Due August 2016 [Member] |  |
Debt Instrument [Line Items] |  |
Debt, original balance | $ 500,000 |
Debt instrument, maturity date | Aug. 31, 2016 |
Required monthly principal payments | $ 3,400 |
Debt instrument stated percentage interest rate | 4.50% |
SRV [Member] | SRV Mortgage Note Due February 2015 [Member] |  |
Debt Instrument [Line Items] |  |
Debt, original balance | $ 400,000 |
SE [Member] | Mortgage Note Due March 2017 [Member] |  |
Debt Instrument [Line Items] |  |
Debt, original balance | $ 3,800,000 |
Debt instrument, maturity date | Mar. 31, 2017 |
Required monthly principal payments | $ 11,900 |
Debt instrument stated percentage interest rate | 2.20% |
SE [Member] | Mortgage Note Due March 2017 [Member] | London interbank offered rate (LIBOR) |  |
Debt Instrument [Line Items] |  |
Debt instrument, percentage point added to LIBOR rate | 1.75% |

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- Definition Debt Covenants, Earnings Before Income Tax Depreciation And Amortization Period + References No definition available. + Details
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- 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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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400 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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- 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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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + 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 + Details
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- Definition Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format. + 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)(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- 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
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- Definition Description of the terms of a credit facility arrangement. Terms typically include interest rate, collateral required, guarantees required, repayment requirements, and restrictions on use of assets and activities of the entity. + 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 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + 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 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 + Details
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