Investment In Partnerships (Summary Of Net Gain On Sale Of Investment In Joint Venture) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
Jun. 30, 2010	Dec. 31, 2012
Schedule of Equity Method Investments [Line Items]
Cash proceeds		$ 426
Receivables	773
Inventory, net	383
Net assets sold	(740)
Transaction costs	(75)
Gain on sale		822
Global Coils [Member]
Schedule of Equity Method Investments [Line Items]
Cash proceeds		426
Receivables		721
Inventory, net		186
Net assets sold		(486)
Transaction costs		(25)
Gain on sale		$ 822

For the disposal group, including a component of the entity (discontinued operation), the aggregate of amounts due from customers or clients for goods or services that have been delivered or sold in the normal course of business and an amount representing an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date, reduced to their estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection and net of any write-downs taken for collection uncertainty on the part of the holder, respectively.

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The cash inflow associated with the sale of equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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