Segment Information (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Segment revenue information
Rental revenue	$ 182,354	$ 112,528	$ 352,104	$ 224,020
Other revenue	1,965	605	3,356	858
Total revenue	184,319	113,133	355,460	224,878
Automotive service
Segment revenue information
Rental revenue	4,031	3,713	7,976	7,482
Automotive tire services
Segment revenue information
Rental revenue	6,980	5,672	13,648	11,321
Beverages
Segment revenue information
Rental revenue	6,178	6,105	12,357	12,210
Child care
Segment revenue information
Rental revenue	5,411	5,221	10,663	10,500
Convenience stores
Segment revenue information
Rental revenue	20,824	19,273	41,067	38,476
Dollar stores
Segment revenue information
Rental revenue	10,191	1,091	19,785	1,127
Drug stores
Segment revenue information
Rental revenue	12,593	4,092	22,795	8,124
Financial services
Segment revenue information
Rental revenue	4,091	699	7,373	1,382
Food processing
Segment revenue information
Rental revenue	2,830	1,350	5,511	2,765
Grocery stores
Segment revenue information
Rental revenue	5,801	4,436	11,315	8,872
Health and fitness
Segment revenue information
Rental revenue	10,859	7,950	21,162	15,922
Health care
Segment revenue information
Rental revenue	3,994	71	7,084	140
Restaurants-casual dining
Segment revenue information
Rental revenue	9,895	8,317	19,341	16,895
Restaurant-quick service
Segment revenue information
Rental revenue	7,868	6,576	15,988	13,449
Theaters
Segment revenue information
Rental revenue	11,538	11,127	23,046	22,259
Transportation services
Segment revenue information
Rental revenue	10,766	2,918	19,643	5,627
Wholesale club
Segment revenue information
Rental revenue	6,104	3,025	12,074	6,051
Other non-reportable segments
Segment revenue information
Rental revenue	$ 42,400	$ 20,892	$ 81,276	$ 41,418