Note 5 - Restructuring and Other Charges (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended
Dec. 31, 2012	Dec. 31, 2012	Dec. 31, 2012 Termination Fees [Member]	Mar. 31, 2012 Facility Closure Costs [Member]	Dec. 31, 2012 Relocation Fees [Member]
Restructuring and Related Cost, Incurred Cost				$ 359
Restructuring Reserve, Accrual Adjustment	46	46
Restructuring Charges		$ 313	$ 174		$ 139

Discloses the amount charged against the accrued restructuring reserves, or earnings if not previously accrued, during the period for the specified type of restructuring cost.

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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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- Definition

Amount of any reversal and other adjustment made during the period to the amount of a previously accrued liability for a specified type of restructuring cost, excluding adjustments for costs incurred during the period, costs settled during the period, and foreign currency translation adjustments.

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