7. FAIR VALUE OF FINANCIAL INSTRUMENTS (Detail) - (Table 1) Fair Value of Financial Instruments (USD $)	Sep. 30, 2012	Dec. 31, 2011
Estimate of Fair Value, Fair Value Disclosure [Member]
Time deposits	$ 54,000	$ 54,000
Money market mutual funds	1,512,000	1,537,000
Corporate debt securities	758,000	885,000
Marketable equity securities	1,146,000	1,134,000
Total assets	3,470,000	3,610,000
Interest rate swap contract	2,066,000	1,975,000
Total liabilities	2,066,000	1,975,000
Fair Value, Inputs, Level 1 [Member]
Money market mutual funds	1,512,000	1,537,000
Marketable equity securities	1,146,000	1,134,000
Total assets	2,658,000	2,671,000
Fair Value, Inputs, Level 2 [Member]
Time deposits	54,000	54,000
Corporate debt securities	758,000	885,000
Total assets	812,000	939,000
Interest rate swap contract	2,066,000	1,975,000
Total liabilities	$ 2,066,000	$ 1,975,000