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Significant Accounting Policies (Details) (USD $)
Dec. 31, 2012
item
Mar. 31, 2011
TMR business
Feb. 02, 2011
TMR business
Significant Accounting Policies      
Number of wholly owned subsidiaries 2    
Discontinued Operations      
Purchase price received in cash   $ 1,000,000 $ 1,000,000
Company's obligations under service contracts assumed   $ 614,000 $ 614,000