Nature of Operations and Summary of Significant Accounting Policies (Details)	12 Months Ended
	Dec. 31, 2011 aircraft departures
Nature of Operations and Summary of Significant Accounting Policies
Number of daily departures to different destinations	4,000
Agreements with other airlines
Number of aircrafts held by entity	732
Delta Connection Agreements
Agreements with other airlines
Percentage of aggregate capacity operated	33.60%
United Express Agreements
Agreements with other airlines
Percentage of aggregate capacity operated	65.20%
Continental Express Agreement
Agreements with other airlines
Percentage of aggregate capacity operated	65.20%
Alaska Capacity Purchase Agreement
Agreements with other airlines
Percentage of aggregate capacity operated	0.90%
US Airways Express Agreement
Agreements with other airlines
Percentage of aggregate capacity operated	0.10%
AirTran Code-Share Agreement
Agreements with other airlines
Percentage of aggregate capacity operated	0.20%
Delta
Agreements with other airlines
Number of aircrafts held by entity	268
United
Agreements with other airlines
Number of aircrafts held by entity	237
Continental
Agreements with other airlines
Number of aircrafts held by entity	206
Alaska
Agreements with other airlines
Number of aircrafts held by entity	5
US Airways
Agreements with other airlines
Number of aircrafts held by entity	2
Maintenance Spare
Agreements with other airlines
Number of aircrafts held by entity	8
Subleased to an un-affiliated entity
Agreements with other airlines
Number of aircrafts held by entity	2
Subleased to an affiliated entity
Agreements with other airlines
Number of aircrafts held by entity	4
CRJ 200
Agreements with other airlines
Number of aircrafts held by entity	268
CRJ 200 | Delta
Agreements with other airlines
Number of aircrafts held by entity	160
CRJ 200 | United
Agreements with other airlines
Number of aircrafts held by entity	96
CRJ 200 | US Airways
Agreements with other airlines
Number of aircrafts held by entity	2
CRJ 200 | Maintenance Spare
Agreements with other airlines
Number of aircrafts held by entity	8
CRJ 200 | Subleased to an un-affiliated entity
Agreements with other airlines
Number of aircrafts held by entity	2
ERJ 145 | ExpressJet
Agreements with other airlines
Number of aircrafts held by entity	242
ERJ 145 | United | ExpressJet
Agreements with other airlines
Number of aircrafts held by entity	36
ERJ 145 | Continental | ExpressJet
Agreements with other airlines
Number of aircrafts held by entity	206
CRJ 700s
Agreements with other airlines
Number of aircrafts held by entity	142
CRJ 700s | Delta
Agreements with other airlines
Number of aircrafts held by entity	67
CRJ 700s | United
Agreements with other airlines
Number of aircrafts held by entity	70
CRJ 700s | Alaska
Agreements with other airlines
Number of aircrafts held by entity	5
CRJ 900
Agreements with other airlines
Number of aircrafts held by entity	35
CRJ 900 | Delta
Agreements with other airlines
Number of aircrafts held by entity	31
CRJ 900 | Subleased to an affiliated entity
Agreements with other airlines
Number of aircrafts held by entity	4
EMB 120
Agreements with other airlines
Number of aircrafts held by entity	45
EMB 120 | Delta
Agreements with other airlines
Number of aircrafts held by entity	10
EMB 120 | United
Agreements with other airlines
Number of aircrafts held by entity	35