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7. Noncontrolling Interest (Details) (USD $)
3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Stockholders' Equity Attributable to Noncontrolling Interest [Roll Forward]    
Noncontrolling interests, beginning of period $ 445,000  
Net loss attributable to noncontrolling interest (61,000) (101,000)
Currency fluctuations 100,000  
Noncontrolling interests, end of period $ 397,000