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Note R - Acquisitions (Detail)
In Thousands, unless otherwise specified
1 Months Ended 3 Months Ended 12 Months Ended 12 Months Ended
Mar. 31, 2012
SM Canada Member
USD ($)
Mar. 31, 2012
SM Canada Member
USD ($)
Mar. 31, 2012
SM Canada Member
CAD
Dec. 31, 2011
Cejon Acquisition [Member]
USD ($)
Mar. 31, 2012
Cejon Acquisition [Member]
May 25, 2011
Cejon Acquisition [Member]
USD ($)
Dec. 31, 2011
Topline Acquisition [Member]
USD ($)
May 20, 2011
Topline Acquisition [Member]
USD ($)
Business Acquisition, Cost of Acquired Entity, Cash Paid (in Dollars)     29,129     $ 29,108   $ 56,128
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High (in Dollars)     38,000     25,000    
Business Acquisition, Contingent Consideration, at Fair Value 19,975 19,975            
Business Acquisition, Purchase Price Allocation, Goodwill, Expected Tax Deductible Years 15 15     15      
Business Combination, Acquisition Related Costs 397 273   531     529  
Notes, Loans and Financing Receivable, Gross (in Dollars) 3,085 3,085 3,107          
Business Combination Contingent Consideration Arrangements Range Of Perfomance Indicators Value High           11,000    
Business Combination Contingent Consideration Arrangements Range Of Outcomes Value High Tier Two           $ 33,000