Related Party Transactions - Narrative (Details) $ in Millions	Sep. 03, 2009 USD ($)
Related Party Transactions [Abstract]
Aggregate purchase price of aircraft	$ 8.3
Cash paid on sale of aircraft	2.1
Promissory note from the affiliate	6.2
Semiannual interest payments received	$ 0.1
Maturity date	Sep. 30, 2016

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(2))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Name:	us-gaap_DebtInstrumentMaturityDate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration