Segment Information (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Segment revenue information
Rental revenue	$ 195,429	$ 116,795	$ 543,557	$ 339,598
Other revenue	3,875	354	6,841	1,211
Total revenue	199,304	117,149	550,398	340,809
Automotive service
Segment revenue information
Rental revenue	3,858	3,576	11,488	10,823
Automotive tire services
Segment revenue information
Rental revenue	6,882	5,641	20,154	16,962
Beverages
Segment revenue information
Rental revenue	6,246	6,171	18,603	18,381
Child care
Segment revenue information
Rental revenue	5,141	5,237	15,761	15,695
Convenience stores
Segment revenue information
Rental revenue	21,727	19,128	62,178	57,198
Dollar stores
Segment revenue information
Rental revenue	12,185	3,618	31,959	4,745
Drug stores
Segment revenue information
Rental revenue	17,767	4,165	40,690	12,180
Financial services
Segment revenue information
Rental revenue	3,890	702	10,950	2,084
Food processing
Segment revenue information
Rental revenue	2,815	1,383	8,299	4,148
Grocery stores
Segment revenue information
Rental revenue	5,626	4,436	16,583	13,308
Health and fitness
Segment revenue information
Rental revenue	11,843	8,059	33,005	23,981
Health care
Segment revenue information
Rental revenue	3,824	70	10,633	210
Home improvement
Segment revenue information
Rental revenue	3,148	1,784	9,078	5,322
Restaurants-casual dining
Segment revenue information
Rental revenue	9,805	8,299	28,719	24,975
Restaurant-quick service
Segment revenue information
Rental revenue	8,096	6,617	23,848	19,990
Theaters
Segment revenue information
Rental revenue	11,538	11,364	34,584	33,622
Transportation services
Segment revenue information
Rental revenue	10,427	2,942	29,505	8,569
Wholesale club
Segment revenue information
Rental revenue	8,655	3,359	20,696	9,410
Other non-reportable segments
Segment revenue information
Rental revenue	$ 41,956	$ 20,244	$ 116,824	$ 57,995