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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Marketable Securities) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items]
Net realized gain on sale of available-for-sale securities	$ 16,560,000	$ 0	$ 0
Proceeds from sale of available-for-sale securities	20,755,000
Fair Value		20,512,000
Common Stock
Schedule of Available-for-sale Securities [Line Items]
Adjusted Cost	$ 4,195,000	4,195,000
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax		16,321,000
Gross Unrealized Losses		0
Fair Value		$ 20,516,000

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 25
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