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Debt (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013 | Dec. 31, 2013
Debt |  |  |  |  |
Total debt | $ 693,532 |  | $ 693,532 |  | $ 463,711
Short-term debt | 14,940 |  | 14,940 |  | 14,647
Long term-debt | 678,592 |  | 678,592 |  | 449,064
Interest expense and other financing costs, net |  |  |  |  |
Interest income | 1,482 | 501 | 3,134 | 925 |
Interest expense and other financing costs | (6,167) | (5,080) | (12,175) | (9,163) |
Interest expense and other financing costs, net | (4,685) | (4,579) | (9,041) | (8,238) |
Credit facility |  |  |  |  |
Debt |  |  |  |  |
Total debt | 425,000 |  | 425,000 |  | 200,000
Term Loans |  |  |  |  |
Debt |  |  |  |  |
Total debt | 242,500 |  | 242,500 |  | 242,500
Capital leases |  |  |  |  |
Debt |  |  |  |  |
Total debt | 14,495 |  | 14,495 |  | 3,158
Acquisition promissory notes |  |  |  |  |
Debt |  |  |  |  |
Total debt | 6,302 |  | 6,302 |  | 13,403
Other |  |  |  |  |
Debt |  |  |  |  |
Total debt | $ 5,235 |  | $ 5,235 |  | $ 4,650

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