Transactions with Related Party (Details) (USD $)	3 Months Ended		9 Months Ended			1 Months Ended	3 Months Ended	9 Months Ended		1 Months Ended	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Dec. 31, 2005 SHG	Sep. 30, 2012 SHG	Sep. 30, 2012 SHG	Dec. 31, 2007 SHG	Feb. 28, 2006 Laurel	Sep. 30, 2013 Laurel	Sep. 30, 2012 Laurel	Sep. 30, 2013 Laurel	Sep. 30, 2012 Laurel	Dec. 31, 2012 Laurel
Transactions with Related Party
Senior subordinated notes purchased in open market						$ 10,000,000
Face rate of senior subordinated notes (as a percent)						11.00%
Effective yield on senior subordinated notes (as a percent)						11.10%
Remaining investment in senior subordinated notes of related party									6,500,000
Interest income related to senior subordinated notes		0		235,000			55,000	235,000
Period of master lease agreement										15 years
Rental income	1,122,000	1,095,000	3,357,000	3,275,000							1,122,000	1,095,000	3,357,000	3,275,000
Straight-line rental income	3,000	31,000	19,000	101,000							3,000	31,000	19,000	101,000
Straight-line rent receivable	$ 3,210,000		$ 3,210,000		$ 3,191,000						$ 3,210,000		$ 3,210,000		$ 3,191,000