Activity and Balances of Restructuring Reserves in Consolidated Balance Sheets (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Jun. 30, 2012	Mar. 31, 2012
Restructuring Cost and Reserve [Line Items]
Beginning Balance	$ 342	$ 614
Restructuring expenses		32
Change in estimate	(57)	(64)
Cash payments made	(240)	(240)
Ending Balance	45	342
Hub
Restructuring Cost and Reserve [Line Items]
Beginning Balance	321	501
Restructuring expenses		32
Change in estimate	(58)	(62)
Cash payments made	(234)	(150)
Ending Balance	29	321
Hub \| Headcount Reduction
Restructuring Cost and Reserve [Line Items]
Beginning Balance	225	364
Restructuring expenses		9
Change in estimate	(9)	(39)
Cash payments made	(211)	(109)
Ending Balance	5	225
Hub \| Consolidation Of Facilities
Restructuring Cost and Reserve [Line Items]
Beginning Balance	96	137
Restructuring expenses		23
Change in estimate	(49)	(23)
Cash payments made	(23)	(41)
Ending Balance	24	96
Mode \| Headcount Reduction
Restructuring Cost and Reserve [Line Items]
Beginning Balance	21	113
Change in estimate	1	(2)
Cash payments made	(6)	(90)
Ending Balance	$ 16	$ 21

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.

+ References+ Details

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.

+ References+ Details

- Definition

Amount of cash paid in the period to fully or partially settle a specified, previously accrued type of restructuring cost.

+ References+ Details