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Debt (Line of Credit Facility) (Details) In Thousands, unless otherwise specified |  | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2013 USD ($) | Jun. 30, 2013 JPMorgan Chase Bank, National Association USD ($) | Jun. 30, 2013 Amendment No. 1 to the 2011 Credit Agreement Effective April 25, 2013 | Jun. 30, 2013 Amended Prudential Investment Management USD ($) | Jun. 30, 2013 Series A Notes USD ($) | Jun. 30, 2013 Series B Notes USD ($) | Jun. 30, 2013 Royal Bank of Scotland N.V. USD ($) | Jun. 30, 2013 Royal Bank of Scotland N.V. EUR (€) | Jun. 30, 2013 HSBC Bank (China) Company Limited, Shanghai Branch USD ($)
Line of Credit Facility |  |  |  |  |  |  |  |  |
Line of credit facility, Maximum borrowing capacity |  | $ 125,000 |  | $ 80,000 |  |  | $ 2,601 | € 2,000 | $ 5,000
Amount of additional line of credit borrowing available |  | 62,500 |  |  |  |  |  |  |
Line of credit facility, Expanded Maximum borrowing capacity |  | 187,500 |  |  |  |  |  |  |
Line of credit facility, Amount outstanding |  | 10,000 |  | 20,000 |  |  | 0 |  | 1,500
Line of credit facility, weighted average interest rate at end of period (in hundredths) |  | 1.56% |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  |  |  | 10,000 | 10,000 |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  |  | 4.00% | 4.10% |  |  | 4.40%
Debt Instrument, Payment Terms |  |  |  |  | 7 year term | 10 year term |  |  |
Debt Instrument, Maturity Date Range, Start |  |  |  |  | Jan. 01, 2014 | Jan. 01, 2015 |  |  |
Debt Instrument, Maturity Date Range, End |  |  |  |  | Jan. 01, 2018 | Jan. 01, 2021 |  |  |
Credit Facilities |  |  |  |  |  |  |  |  |
Line of credit facility, Expiration date |  | May 05, 2016 | Mar. 01, 2018 | Jul. 24, 2015 |  |  |  |  |
Sublimit on borrowings by foreign subsidiaries |  | 100,000 |  |  |  |  |  |  |
Line of credit facility, Minimum commitment fee percentage (in hundredths) |  | 0.25% | 0.20% |  |  |  |  |  |
Line of credit facility, Maximum commitment fee percentage (in hundredths) |  | 0.40% | 0.35% |  |  |  |  |  |
Minimum interest rate spread added to adjusted LIBOR rate based on leverage ratio on Eurocurrency borrowings (in hundreths) |  | 1.50% | 1.30% |  |  |  |  |  |
Maximum interest rate spread added to adjusted LIBOR rate based on leverage ration on Eurocurrency borrowings (in hundreths) |  | 2.10% | 1.90% |  |  |  |  |  |
Interest rate spread added to federal funds rate on Alternate Base Rate Borrowings (in hundredths) |  | 0.50% | 0.50% |  |  |  |  |  |
Interest rate spread added to LIBOR rate for one month on Alternate Base Rate Borrowings (in hundredths) |  | 1.00% | 1.00% |  |  |  |  |  |
Minimum interest rate spread added to LIBOR rate for one month based on leverage ratio on Alternate Base Rate Borrowings (in hundredths) |  | 0.50% | 0.30% |  |  |  |  |  |
Maximum interest rate spread added to LIBOR rate for one month based on leverage ratio on Alternate Base Rate Borrowings (in hundredths) |  | 1.10% | 0.90% |  |  |  |  |  |
Percentage stock of certain first tier foreign subsidiaries pledged as collateral under the credit agreement (in hundredths) |  | 65.00% |  |  |  |  |  |  |
Line of credit facility, Covenant restriction, Maximum Indebtedness to EBITDA |  | 3.00 to 1 |  | 3.00 to 1 |  |  |  |  |
Line of credit facility, Covenant restriction, Minimum EBITDA to interest expense |  | 3.50 to 1 |  |  |  |  |  |  |
Line of credit facility, Covenant restriction, Maximum leverage ratio restricting paying of dividends or repurchasing stock |  | 2.00 to 1 |  | 2.00 to 1 |  |  |  |  |
Restriction on dividends and repurchases of common stock, Minimum |  | 50,000 |  | 50,000 |  |  |  |  |
Restriction on dividends and repurchases of common stock, Maximum |  | 75,000 |  | 75,000 |  |  |  |  |
Line of credit facility, Covenant restriction, Minimum leverage ratio restricting ability to make acquisitions |  | 2.75 to 1 |  | 2.75 to 1 |  |  |  |  |
Line of credit facility, Covenant restriction, Maximum level that can be paid for acquisitions |  | 25,000 |  | 25,000 |  |  |  |  |
Original Debt Amount Owed To Previous Owners Of An Acquired Business | 1,500 |  |  |  |  |  |  |  |
Amount outstanding on notes payable to owners of acquired entity | $ 0 |  |  |  |  |  |  |  |

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- Definition The maximum fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used. + References No definition available. + Details
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