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Fair Value Measurements Unobservable Inputs Reconciliation - Assets (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 3 Months Ended
Mar. 31, 2014
Foreign Exchange Contract
Not Designated as Hedging Instrument
Dec. 31, 2013
Foreign Exchange Contract
Not Designated as Hedging Instrument
Mar. 31, 2013
Foreign Exchange Contract
Not Designated as Hedging Instrument
Dec. 31, 2012
Foreign Exchange Contract
Not Designated as Hedging Instrument
Mar. 31, 2014
Silver, Ounces, Copper Contracts
Commodity Contract
Designated as Hedging Instrument
oz
Mar. 31, 2014
WebBank
Dec. 31, 2013
WebBank
Dec. 31, 2013
Other Current Liabilities
Commodity Contract
Not Designated as Hedging Instrument
Mar. 31, 2014
Undisbursed Loan Commitment
Other Current Liabilities
WebBank
Dec. 31, 2013
Undisbursed Loan Commitment
Other Current Liabilities
WebBank
Mar. 31, 2014
Selling, General and Administrative Expenses
Undisbursed Loan Commitment
Mar. 31, 2013
Selling, General and Administrative Expenses
Undisbursed Loan Commitment
Mar. 31, 2014
Fair Value, Measurements, Recurring
Level 3
Mar. 31, 2013
Fair Value, Measurements, Recurring
Level 3
Mar. 31, 2014
Fair Value, Measurements, Recurring
Level 3
Foreign Exchange Contract
Dec. 31, 2013
Fair Value, Measurements, Recurring
Level 3
Foreign Exchange Contract
Mar. 31, 2014
Fair Value, Measurements, Recurring
Level 3
Investments in Associated Companies
Mar. 31, 2013
Fair Value, Measurements, Recurring
Level 3
Investments in Associated Companies
Mar. 31, 2014
Fair Value, Measurements, Recurring
Level 3
Other Investments - Related Party
Mar. 31, 2013
Fair Value, Measurements, Recurring
Level 3
Other Investments - Related Party
Mar. 31, 2014
Fair Value, Measurements, Recurring
Level 3
ModusLink Warrants
Mar. 31, 2013
Fair Value, Measurements, Recurring
Level 3
ModusLink Warrants
Mar. 31, 2014
Fair Value, Measurements, Recurring
Level 3
Marketable Securities and Other
Mar. 31, 2013
Fair Value, Measurements, Recurring
Level 3
Marketable Securities and Other
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]                                                
Balance at beginning of period                         $ 42,512 $ 24,588     $ 2,243 [1] $ 10,521 [1] $ 10,228 [2] $ 11,263 [2] $ 5,832 [3] $ 0 [3] $ 24,209 [4] $ 2,804 [4]
Purchases                         5,299 23,084     0 [1] 0 [1] 0 [2] 0 [2] 0 [3] 3,184 [3] 5,299 [4] 19,900 [4]
Sales                         (1,974) 0     0 [1] 0 [1] 0 [2] 0 [2] 0 [3] 0 [3] (1,974) [4] 0 [4]
Realized gain on sale                         0       0 [1]   0 [2]   0 [3]   0 [4]  
Unrealized gains                         2,956 1,160     0 [1] 0 [1] 99 [2] 1,118 [2] 0 [3] 0 [3] 2,857 [4] 42 [4]
Unrealized losses                         (2,660) (5,426)     (112) [1] (5,239) [1] (101) [2] (49) [2] (2,447) [3] (138) [3] 0 [4] 0 [4]
Balance at end of period                         46,133 43,406     2,131 [1] 5,282 [1] 10,226 [2] 12,332 [2] 3,385 [3] 3,046 [3] 30,391 [4] 22,746 [4]
Derivative [Line Items]                                                
Undisbursed loan commitment           22,029 28,011                                  
Amount         600,000                                      
Derivative instruments, liabilities 25,285 [5] 25,090 23,150 [5] 24,742       158 [6]             0 0                
Loss Contingency Accrual                 465 465                            
Credit Loss Exposure Expense (Benefit)                     $ 0 $ 2                        
[1] Unrealized losses are recorded in Loss of associated companies, net of taxes in the Company's Consolidated Statements of Operations.
[2] Unrealized gains and losses are recorded in Loss (Income) from other investments-related party in the Company's Consolidated Statements of Operations.
[3] (a) Unrealized losses are recorded in Loss of associated companies, net of taxes in the Company's Consolidated Statements of Operations.(b) Unrealized gains and losses are recorded in Loss (Income) from other investments-related party in the Company's Consolidated Statements of Operations.(c) Unrealized gains and losses are recorded in Loss from investments held at fair value in the Company's Consolidated Statements of Operations.
[4] Realized gains on sale are recorded in Other income, net in the Company's Consolidated Statements of Operations.
[5] The financial instruments payable in foreign currencies are entered into with a counterparty and are considered Level 2 measurements. Carrying value approximates fair value.
[6] Carrying amount equals fair value.