6. FAIR VALUE OFFINANCIAL INSTRUMENTS (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Cash equivalents:
U.S. Treasury bills	$ 4,200,000	$ 55,000
Money market mutual funds	1,529,000	1,257,000
Time deposits	55,000	15,305,000
Marketable securities:
Marketable equity securities	10,351,000	1,065,000
Corporate debt securities	911,000	3,658,000
Total assets	17,046,000	21,340,000
Quoted Prices in Active Markets for Identical Assets (Level 1)
Cash equivalents:
U.S. Treasury bills	4,200,000
Money market mutual funds	1,529,000	1,257,000
Time deposits		15,305,000
Marketable securities:
Marketable equity securities	10,351,000
Corporate debt securities		3,658,000
Total assets	16,080,000	20,220,000
Significant Other Observable Inputs (Level 2)
Cash equivalents:
U.S. Treasury bills		55,000
Money market mutual funds
Time deposits	55,000
Marketable securities:
Marketable equity securities		1,065,000
Corporate debt securities	911,000
Total assets	966,000	1,120,000
Significant Unobservable Inputs (Level 3)
Cash equivalents:
U.S. Treasury bills
Money market mutual funds
Time deposits
Marketable securities:
Marketable equity securities
Corporate debt securities
Total assets