Restructuring, Acquisition and Other Charges (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Jan. 31, 2013	Jan. 31, 2012	Jan. 31, 2011
Summary of restructuring, acquisition and other charges
Restructuring	$ (61)	$ 163	$ 2,272
Acquisition and Other Charges:
Acquisitions and costs related to issuance of debt	126	115	113
Sponsor and administration fees paid to Silver Lake, a related party	1,125	1,125	1,125
Severance, facility and other charges not part of restructuring and not part of ongoing operations	3,380	1,571	1,822
Total	$ 4,570	$ 2,974	$ 5,332

The charge against earnings in the period, comprised of costs associated with restructuring activities not otherwise specified in the taxonomy pursuant to a duly authorized plan, excluding a discontinued operation as defined by generally accepted accounting principles. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, but excludes costs associated with the retirement of a long-lived asset and severance costs associated with established compensation plans.

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Amount charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding asset retirement obligations.

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