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Contingent Liabilities (Reconciliation of Product Liability Reserve) (Details) (Product liability reserve [Member], USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Product liability reserve [Member] |  |  |  |  |  |
Valuation and Qualifying Accounts Disclosure [Line Items] |  |  |  |  |  |
Balance at Beginning of Period | $ 1,746 | [1] | $ 1,022 | [1] | $ 2,082 | [1]
Accrued Legal Expense (Income) | (633) | [2] | 755 | [2] | (834) | [2]
Legal Fees | (52) | [3] | (31) | [3] | (64) | [3]
Settlements | (4) | [4] |  | [4] | (162) | [4]
Balance at End of Period | $ 1,057 | [1] | $ 1,746 | [1] | $ 1,022 | [1]
[1] | The beginning and ending liability balances represent accrued legal fees only. Settlements and administrative costs are expensed as incurred. Only in rare instances is an accrual established for settlements.
[2] | The expense accrued in the liability is for legal fees only. In 2010 and 2012, the costs incurred related to cases that were settled or dismissed were less than the amounts accrued for these cases in prior years.
[3] | Legal fees represent payments to outside counsel related to product liability matters.
[4] | Settlements represent payments made to plaintiffs or allegedly injured parties in exchange for a full and complete release of liability.

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