Disclosure about Fair Value of Financial Instruments (Details 1) $ in Thousands	Dec. 31, 2017 USD ($)
The Market approach utilized to measure fair value of financial assets and liabilities on recurring basis
Available-for-sale equity investments	$ 7,269	[1]
Foreign currency forward contract	(23,050)	[2]
Redeemable OP unit holder Interests	97,476
Total	81,695
Level 1 [Member]
The Market approach utilized to measure fair value of financial assets and liabilities on recurring basis
Available-for-sale equity investments	7,269	[1]
Foreign currency forward contract	0	[2]
Redeemable OP unit holder Interests	0
Total	7,269
Level 2 [Member]
The Market approach utilized to measure fair value of financial assets and liabilities on recurring basis
Available-for-sale equity investments	0	[1]
Foreign currency forward contract	(23,050)	[2]
Redeemable OP unit holder Interests	97,476
Total	74,426
Level 3 [Member]
The Market approach utilized to measure fair value of financial assets and liabilities on recurring basis
Available-for-sale equity investments	0	[1]
Foreign currency forward contract	0	[2]
Redeemable OP unit holder Interests	0
Total	$ 0

[1] Unrealized gains or losses on available-for-sale equity investments are recorded in accumulated other comprehensive income (loss) at each measurement date. During the years ended December 31, 2017 and 2015, we recognized other than temporary impairment charges of $18,294,000 and $35,648,000, respectively, on the Genesis HealthCare stock investment. Also, see Note 11 for details related to the gain on the derivative asset originally recognized.

[2] Please see Note 11 for additional information.