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Investments In Marketable Securities
3 Months Ended
Mar. 31, 2016
Marketable Securities [Abstract]  
Investments In Marketable Securities [Text Block]
INVESTMENTS IN MARKETABLE SECURITIES

Our investments in marketable securities include available-for-sale securities which are reported at fair value and investments in marketable debt securities, also classified as available-for-sale, which consist of U.S. government agency debt and long-term certificates of deposit. Unrealized gains and losses on available-for-sale securities are presented as a component of accumulated other comprehensive income. Realized gains and losses from securities sales are determined based upon specific identification of the securities. Marketable securities consist of the following (in thousands):
 
March 31, 2016
 
December 31, 2015
 
Amortized Cost

 
Fair Value

 
Amortized Cost

 
Fair Value

Common stock of other healthcare REITs
$
21,040

 
$
58,532

 
$
21,040

 
$
55,815

Debt securities
$

 
$

 
$
17,037

 
$
16,929



Net unrealized gains related to available-for-sale securities were $37,492,000 at March 31, 2016 and $34,667,000 at December 31, 2015.