Real Estate Investments (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended			6 Months Ended		0 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013	Jun. 30, 2014 Minimum [Member]	Jun. 30, 2014 Maximum [Member]	Jun. 30, 2014 Texas Retail Buildings [Member]	Feb. 01, 2013 Connecticut Warehouse [Member]
Schedule of Investments [Line Items]
Proceeds from Sale of Real Estate Held-for-investment								$ 4,450	$ 9,200
Land	17,297		17,297		18,892
Building and improvements	56,168		56,168		59,256
Intangibles	329		329		329
Subtotal	73,794		73,794		78,477
Less accumulated depreciation and amortization	10,807		10,807		10,658
Total	62,987		62,987		67,819
Estimated useful life						5 years	39 years
Gain on sale of real estate investment	273	0	273	1,063				273	1,063
Real Estate Selling Expenses								$ 169	$ 369