Fair Value Measurement (Details) (USD $)	12 Months Ended
Jan. 31, 2013	Jan. 31, 2012
Summary of input levels used to determine the fair value of entity's investment securities, contingent consideration obligations and embedded derivative [Abstract]
SERP investment in mutual funds	$ 3,410,000	$ 3,318,000
Embedded derivatives in debt put option	(61,000)	(61,000)
MSI acquisition [Member]
Summary of input levels used to determine the fair value of entity's investment securities, contingent consideration obligations and embedded derivative [Abstract]
Liability on earn-out		(100,000)
Change in contingent earn-out consideration	0
Ingenium acquisition [Member]
Summary of input levels used to determine the fair value of entity's investment securities, contingent consideration obligations and embedded derivative [Abstract]
Liability on earn-out		(400,000)
Change in contingent earn-out consideration	0
LTI acquisition [Member]
Summary of input levels used to determine the fair value of entity's investment securities, contingent consideration obligations and embedded derivative [Abstract]
Liability on earn-out	(650,000)	(500,000)
Change in contingent earn-out consideration	350,000
Contingent earn out consideration paid out during the year	200,000
Garwood acquisition [Member]
Summary of input levels used to determine the fair value of entity's investment securities, contingent consideration obligations and embedded derivative [Abstract]
Liability on earn-out	(200,000)
(Level 1) [Member]
Summary of input levels used to determine the fair value of entity's investment securities, contingent consideration obligations and embedded derivative [Abstract]
SERP investment in mutual funds	3,410,000	3,318,000
Embedded derivatives in debt put option	0	0
(Level 1) [Member] \| MSI acquisition [Member]
Summary of input levels used to determine the fair value of entity's investment securities, contingent consideration obligations and embedded derivative [Abstract]
Liability on earn-out		0
(Level 1) [Member] \| Ingenium acquisition [Member]
Summary of input levels used to determine the fair value of entity's investment securities, contingent consideration obligations and embedded derivative [Abstract]
Liability on earn-out		0
(Level 1) [Member] \| LTI acquisition [Member]
Summary of input levels used to determine the fair value of entity's investment securities, contingent consideration obligations and embedded derivative [Abstract]
Liability on earn-out	0	0
(Level 1) [Member] \| Garwood acquisition [Member]
Summary of input levels used to determine the fair value of entity's investment securities, contingent consideration obligations and embedded derivative [Abstract]
Liability on earn-out	0
(Level 2) [Member]
Summary of input levels used to determine the fair value of entity's investment securities, contingent consideration obligations and embedded derivative [Abstract]
SERP investment in mutual funds	0	0
Embedded derivatives in debt put option	0	0
(Level 2) [Member] \| MSI acquisition [Member]
Summary of input levels used to determine the fair value of entity's investment securities, contingent consideration obligations and embedded derivative [Abstract]
Liability on earn-out		0
(Level 2) [Member] \| Ingenium acquisition [Member]
Summary of input levels used to determine the fair value of entity's investment securities, contingent consideration obligations and embedded derivative [Abstract]
Liability on earn-out		0
(Level 2) [Member] \| LTI acquisition [Member]
Summary of input levels used to determine the fair value of entity's investment securities, contingent consideration obligations and embedded derivative [Abstract]
Liability on earn-out	0	0
(Level 2) [Member] \| Garwood acquisition [Member]
Summary of input levels used to determine the fair value of entity's investment securities, contingent consideration obligations and embedded derivative [Abstract]
Liability on earn-out	0
(Level 3) [Member]
Summary of input levels used to determine the fair value of entity's investment securities, contingent consideration obligations and embedded derivative [Abstract]
SERP investment in mutual funds	0	0
Embedded derivatives in debt put option	(61,000)	(61,000)
(Level 3) [Member] \| MSI acquisition [Member]
Summary of input levels used to determine the fair value of entity's investment securities, contingent consideration obligations and embedded derivative [Abstract]
Liability on earn-out		(100,000)
(Level 3) [Member] \| Ingenium acquisition [Member]
Summary of input levels used to determine the fair value of entity's investment securities, contingent consideration obligations and embedded derivative [Abstract]
Liability on earn-out		(400,000)
(Level 3) [Member] \| LTI acquisition [Member]
Summary of input levels used to determine the fair value of entity's investment securities, contingent consideration obligations and embedded derivative [Abstract]
Liability on earn-out	(650,000)	(500,000)
(Level 3) [Member] \| Garwood acquisition [Member]
Summary of input levels used to determine the fair value of entity's investment securities, contingent consideration obligations and embedded derivative [Abstract]
Liability on earn-out	(200,000)
Contingent consideration obligation	$ 200,000

Fair value, as of the acquisition date, of potential payments under the contingent consideration arrangement including cash and shares.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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+ Details

- Definition

Fair value as of the balance sheet date of the embedded derivative or group of embedded derivatives classified as a liability.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 44B

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 12-16, 44A, 44B

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 44A, 44B

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents investment securities as of the balance sheet date which may include marketable securities, derivative financial instruments, and investments accounted for under the equity method.

+ References+ Details