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Debt - Short-Term Borrowings (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014
Line of Credit Facility [Line Items]
Short-term borrowings	$ 95,820us-gaap_ShortTermBorrowings	$ 66,342us-gaap_ShortTermBorrowings
Revolving Credit Facility
Line of Credit Facility [Line Items]
Short-term borrowings	95,820	66,342
Minimum
Line of Credit Facility [Line Items]
Short-term borrowings	35,981		47,157
Maximum
Line of Credit Facility [Line Items]
Short-term borrowings	$ 130,878		$ 111,912

- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

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