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Debt (Details 2) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Debt |  |  |
Total debt | $ 463,711 | $ 380,318 |
Current maturities of long-term debt | 14,647 | 26,065 |
Long term-debt | 449,064 | 354,253 |
Weighted average interest rate (as a percent) | 2.10% | 2.40% |
Aggregate annual maturities of debt |  |  |
2014 | 14,647 |  |
2015 | 9,733 |  |
2016 | 12,508 |  |
2017 | 16,016 |  |
2018 | 410,807 |  |
Interest income, expense and other financing costs |  |  |
Interest income | 3,882 | 908 | 788
Interest expense and other financing costs | (21,169) | (20,005) | (16,613)
Interest expense and other financing costs, net | (17,287) | (19,097) | (15,825)
Credit facility |  |  |
Debt |  |  |
Total debt | 200,000 | 100,500 |
Term Loans |  |  |
Debt |  |  |
Total debt | 242,500 | 247,500 |
Acquisition promissory notes |  |  |
Debt |  |  |
Total debt | 13,403 | 25,878 |
Interest rate, minimum (as a percent) | 1.20% |  |
Interest rate, maximum (as a percent) | 6.00% |  |
Other |  |  |
Debt |  |  |
Total debt | $ 7,808 | $ 6,440 |
Interest rate, minimum (as a percent) | 2.00% |  |
Interest rate, maximum (as a percent) | 6.30% |  |

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