Lines of Credit and Financing Arrangements (Details Textual) - USD ($)	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Short-term Debt [Line Items]
Debt Instrument, Unused Borrowing Capacity, Fee	$ 0.0005
Short-term Debt	226,100,000		$ 226,600,000
Foreign obligations [Member]
Short-term Debt [Line Items]
Short-term Debt	6,100,000		$ 6,600,000
Proceeds from Short-term Debt	32,400,000	$ 23,600,000
Repayments of Short-term Debt	$ 32,100,000	$ 24,200,000