v2.4.0.6
Income Taxes Operating Loss Carryforwards (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Operating Loss Carryforwards [Line Items]    
Federal net operating losses resulting from acquisition $ 38,700  
State net operating losses resulting from acquisition 34,400  
State net operating losses usable after limitations from Internal Revenue Code 382 25,100  
State net operating loss carryforward 1,442 947
Valuation allowance 1,869 758
Foreign net operating loss carryforwards 1,405 861
State and Local Jurisdiction [Member]
    
Operating Loss Carryforwards [Line Items]    
Valuation allowance (695)  
Foreign Country [Member]
    
Operating Loss Carryforwards [Line Items]    
Valuation allowance (1,174)  
Foreign operating losses available to carryforward 5,741  
Foreign operating losses expiring between 2014 and 2016 3,629  
Foreign operating losses to be carried forward indefinitely 2,112  
Investments in Foreign Subsidiaries and Foreign Corporate Joint Ventures that are Essentially Permanent in Duration [Member]
    
Operating Loss Carryforwards [Line Items]    
Deferred tax liability for foreign subsidiaries' undistributed earnings $ 115,847