Summary of Significant Accounting Policies (Narrative) (Details)	9 Months Ended
	Sep. 30, 2014 segment
Summary Of Significant Accounting Policies [Line Items]
Number of reportable segments	1
Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Operating leases, initial terms	24 months
Operating leases, period for non accrual status	90 days
Drydocking equipment period	24 months
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Operating leases, initial terms	120 months
Operating leases, period of review for impairment	90 days
Drydocking equipment period	30 months