Marketable Securities

12 Months Ended

Dec. 31, 2017

Investments, Debt and Equity Securities [Abstract]

MARKETABLE SECURITIES

MARKETABLE SECURITIES

All of our marketable securities were classified as available-for-sale securities as of December 31, 2017, 2016 and 2015. Available-for-sale securities consist of the following (in thousands):

	December 31, 2017
	Amortized Cost		Gains in Accumulated Other Comprehensive Income		Losses in Accumulated Other Comprehensive Income			Estimated Fair Value
Real estate sector common stock	$	50	$	—	$	(18	)	$	32
Total available-for-sale securities	$	50	$	—	$	(18	)	$	32

	December 31, 2016
	Amortized Cost		Gains in Accumulated Other Comprehensive Income		Losses in Accumulated Other Comprehensive Income			Estimated Fair Value
Real estate sector common stock	$	654	$	—	$	(137	)	$	517
Total available-for-sale securities	$	654	$	—	$	(137	)	$	517

During the years ended December 31, 2017 and 2015, available-for-sale securities were sold for total proceeds of $513,000 and $496,000, respectively. The gross realized gains and losses on these sales totaled $5,000 and $96,000, respectively, in 2017, and $44,000 and $0, respectively, in 2015. During the year ended December 31, 2016, no available-for-sale securities were sold. For the purpose of determining gross realized gains and losses, the cost of securities sold is based on specific identification. A net unrealized holding loss on available-for-sale securities in the amount of $18,000 and $137,000 for the years ended December 31, 2017 and 2016, respectively, has been included in accumulated other comprehensive income.