Debt (BNDES Loans) (Narrative) (Details) (BNDES Loans [Member], USD $) In Millions, unless otherwise specified	9 Months Ended
Sep. 30, 2014
BNDES Loans [Member]
Debt Instrument [Line Items]
Debt instrument, additional borrowings	$ 0.4
Repayments of BNDES Loans	$ 6.3

The cash outflow to pay off borrowing used to receive debt funding on a regular basis with maturities ranging from 5-10 years.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

Name:	us-gaap_RepaymentsOfMediumTermNotes
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration