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Transactions With Related Parties (Narrative) (Details) (USD $)
Mar. 31, 2013
Mar. 31, 2012
Dec. 31, 2012
Sandhill Group Llc [Member]
Mar. 31, 2013
Sandhill [Member]
Dec. 31, 2012
Sandhill [Member]
Mar. 31, 2013
Sandhill Group Llc [Member]
Related Party Transaction [Line Items]            
Percentage of interest held           50.00%
Due from related parties     $ 200,000 $ 200,000 $ 200,000  
Due to related parties $ 150,000 $ 150,000