Consolidated earnings before interest tax depreciation and amortization.

No definition available.

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- Definition

Consolidated leverage ratio.

+ References

No definition available.

+ Details

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- Definition

Line of credit facility additional borrowing capacity.

+ References

No definition available.

+ Details

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- Definition

Number of European banks guaranteed obligations to third parties.

+ References

No definition available.

+ Details

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- Definition

Number of foreign subsidiaries under guarantee obligations.

+ References

No definition available.

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- Definition

Number of irrevocable stand by letter of credit.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
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Period Type:	instant

- 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

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248

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

- Definition

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

+ References

No definition available.

+ 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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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-Paragraph 1
-Subparagraph (SX 210.5-02(22))
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+ Details

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

- Definition

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

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
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

Including the current and noncurrent portions, carrying value as of the balance sheet date of loans from a bank with maturities initially due after one year or beyond the normal operating cycle if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
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-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

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

- Definition

Carrying value as of the balance sheet date of current portion of long-term loans payable to bank due within one year or the operating cycle if longer.

+ References

+ Details

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- Definition

The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. This element is for unclassified presentations; for classified presentations there is a separate and distinct element.

+ References

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Debt and Lines of Credit (Details Textual)	3 Months Ended
Debt and Lines of Credit (Details Textual)	Apr. 30, 2017 USD ($) CreditFacility Bank Subsidiary	Apr. 30, 2017 CHF (SFr) CreditFacility Bank Subsidiary	Jan. 31, 2017 USD ($)	Apr. 30, 2016 USD ($) Bank Subsidiary	Apr. 30, 2016 CHF (SFr) Bank Subsidiary	Jan. 30, 2015 USD ($)
Debt Instrument [Line Items]
Outstanding balance under facility, current	$ 5,000,000		$ 5,000,000
Number of issued standby letter of credit \| CreditFacility	2	2
Minimum
Debt Instrument [Line Items]
Consolidated Earnings Before Interest Tax Depreciation And Amortization	$ 50,000,000
Secured Debt \| Credit Agreement Due on January 30, 2020
Debt Instrument [Line Items]
Letter of credit outstanding amount	$ 300,000
Secured Debt \| Credit Agreement Due on January 30, 2020 \| Maximum
Debt Instrument [Line Items]
Consolidated leverage ratio	2.50%	2.50%
Unsecured Debt \| Swiss subsidiary
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	$ 6,500,000	SFr 6,500,000		$ 5,200,000	SFr 5,000,000
Outstanding borrowing amount	$ 0			$ 0
Revolving Credit Facility \| Secured Debt \| Credit Agreement Due on January 30, 2020
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity						$ 100,000,000
Uncommitted increase to borrowing capacity						50,000,000
Credit facility matures date	Jan. 30, 2020
Loan drawn under the facility	$ 30,000,000
Line of credit facility remaining borrowing capacity	69,700,000
Outstanding balance under facility, current	$ 5,000,000
Revolving Credit Facility \| Secured Debt \| Credit Agreement Due on January 30, 2020 \| LIBOR
Debt Instrument [Line Items]
Applicable margin rate	1.25%
Revolving Credit Facility \| Secured Debt \| Credit Agreement Due on January 30, 2020 \| LIBOR \| Minimum
Debt Instrument [Line Items]
Applicable margin rate	1.25%
Revolving Credit Facility \| Secured Debt \| Credit Agreement Due on January 30, 2020 \| LIBOR \| Maximum
Debt Instrument [Line Items]
Applicable margin rate	1.75%
Revolving Credit Facility \| Secured Debt \| Credit Agreement Due on January 30, 2020 \| Base Rate
Debt Instrument [Line Items]
Applicable margin rate	0.25%
Revolving Credit Facility \| Secured Debt \| Credit Agreement Due on January 30, 2020 \| Base Rate \| Minimum
Debt Instrument [Line Items]
Applicable margin rate	0.25%
Revolving Credit Facility \| Secured Debt \| Credit Agreement Due on January 30, 2020 \| Base Rate \| Maximum
Debt Instrument [Line Items]
Applicable margin rate	0.75%
Letter of Credit
Debt Instrument [Line Items]
Credit facility matures date	Apr. 26, 2018
Outstanding borrowing amount	$ 300,000
Letter of Credit \| Secured Debt \| Credit Agreement Due on January 30, 2020
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity						$ 15,000,000
Line of Credit \| Unsecured Debt \| Swiss subsidiary
Debt Instrument [Line Items]
Number of European banks guaranteed obligations to third parties \| Bank	2	2		2	2
Number of foreign subsidiaries under guaranteed obligation \| Subsidiary	2	2		2	2
Guaranteed obligations to third parties	$ 1,200,000			$ 1,000,000
Restricted deposit relates to lease agreement	$ 500,000			$ 500,000