Discontinued Operations (Schedule of Major Categories of Assets and Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011
Assets of Discontinued Operations:
Cash	$ 13,545
Accounts receivable, net of allowance for doubtful accounts	36,458
Inventories	16,507
Property, plant and equipment, net	6,907
Goodwill and intangibles	39,227
Other current and noncurrent assets	5,174
Total assets of discontinued operation	117,818
Liabilities of Discontinued Operations:
Accounts payable	9,255
Accrued liabilities	11,428
Other current liabilities	1,763
Liabilities for defined benefit pension plans	9,513
Other noncurrent liabilties	4,604
Total liabilities of discontinued operation	$ 36,563