Basis of Presentation and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2012

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of expected amortization of deferred revenue leases

	2013		2014		2015		2016		2017
Estimated amortization	$	2,553	$	2,312	$	2,059	$	1,795	$	1,586