FAIR VALUE MEASUREMENTS (Details) (USD $)	Jun. 30, 2013	Dec. 31, 2012
Amounts included in asset accounts [Abstract]
Money Market funds	$ 19,125,000	$ 16,987,000
Non-government sponsored debt securities	5,496,000	16,607,000
Amounts included in liability accounts [Abstract]
Contingent consideration	1,220,000	1,370,000
Long-term debt	1,500,000	2,500,000
Fair Value, Inputs, Level 1 [Member]
Amounts included in asset accounts [Abstract]
Money Market funds	19,125,000	16,987,000
Non-government sponsored debt securities	0	0
Amounts included in liability accounts [Abstract]
Contingent consideration	0	0
Fair Value, Inputs, Level 2 [Member]
Amounts included in asset accounts [Abstract]
Money Market funds	0	0
Non-government sponsored debt securities	5,496,000	16,607,000
Amounts included in liability accounts [Abstract]
Contingent consideration	0	0
Fair Value, Inputs, Level 3 [Member]
Amounts included in asset accounts [Abstract]
Money Market funds	0	0
Non-government sponsored debt securities	0	0
Amounts included in liability accounts [Abstract]
Contingent consideration	$ 1,220,000	$ 1,370,000