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Transactions With Related Parties (Schedule Of Transactions With Related Parties) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Quintana Group [Member]
Related Party Transaction [Line Items]
Related party transaction, expenses	$ 0	$ 2,244	$ 0	$ 4,201
Related party transaction, revenues	0	4,578	0	14,766
Sandhill [Member]
Related Party Transaction [Line Items]
Related party transaction, revenues	808	660	1,481	1,273
Davision [Member]
Related Party Transaction [Line Items]
Related party transaction, revenues	289	374	644	686
Chief Executive Officer [Member]
Related Party Transaction [Line Items]
Related party transaction, expenses	$ 150	$ 150	$ 300	$ 300
Sandhill Group Llc [Member]
Related Party Transaction [Line Items]
Percentage of interest held	50.00%		50.00%

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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- Definition

Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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