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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]
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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 |  |  |  |

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