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Subsequent Event (Narrative) (Details)
0 Months Ended 0 Months Ended
Mar. 29, 2014
USD ($)
Apr. 29, 2014
Subsequent Event Wolfson Acquisition [Member]
USD ($)
Apr. 29, 2014
Subsequent Event Wolfson Acquisition [Member]
GBP (£)
Apr. 29, 2014
Wolfson Wells Fargo Line of Credit [Member]
Subsequent Event Wolfson Acquisition [Member]
USD ($)
Apr. 29, 2014
Maximum [Member]
Wolfson Wells Fargo Line of Credit [Member]
Subsequent Event Wolfson Acquisition [Member]
Apr. 29, 2014
Maximum [Member]
Wolfson Wells Fargo Line of Credit [Member]
Base Rate [Member]
Subsequent Event Wolfson Acquisition [Member]
Apr. 29, 2014
Maximum [Member]
Wolfson Wells Fargo Line of Credit [Member]
London Interbank Offered Rate (LIBOR) [Member]
Subsequent Event Wolfson Acquisition [Member]
Apr. 29, 2014
Minimum [Member]
Wolfson Wells Fargo Line of Credit [Member]
Subsequent Event Wolfson Acquisition [Member]
Apr. 29, 2014
Minimum [Member]
Wolfson Wells Fargo Line of Credit [Member]
Base Rate [Member]
Subsequent Event Wolfson Acquisition [Member]
Apr. 29, 2014
Minimum [Member]
Wolfson Wells Fargo Line of Credit [Member]
London Interbank Offered Rate (LIBOR) [Member]
Subsequent Event Wolfson Acquisition [Member]
Business Acquisition, Share Price     £ 2.35              
Offer Consideration   $ 488,000,000 £ 291,000,000              
USD to GBP exchange rate at acquisition   1.68                
Enterprise Value   467,000,000 278,000,000              
Borrowing limit under the revolving credit facility 100,000,000     225,000,000            
Line of Credit Facility, Interest Rate Description           .25% 2.25%   0% 1.75%
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage         0.40%     0.30%    
Covenant Terms, Leverage Ratio Requirement 175.00%     175.00%            
Covenant Terms, Sum of Cash and Cash Equiv Requirement       $ 75,000,000