Related Party Transactions (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Related Party Transaction [Line Items]
Related party transaction, amounts	$ 0.9	$ 0.8	$ 1.1
Management fees	0.2	0.1	0.1
Document Period End Date	Dec. 31, 2013
Payables to related parties	0.6	0.4
Related Party Transaction, Revenues from Transactions with Related Party	6.6	44.8
Due from Related Parties, Current	1.8	4.7
Maximum [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Revenues from Transactions with Related Party	5.0
Era Group [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Revenues from Transactions with Related Party	$ 5.0

The aggregate amount of receivables to be collected from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth, at the financial statement date. which are usually due within one year (or one business cycle).

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Carrying amount as of the balance sheet date of obligations due all related parties.

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- Definition

Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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