OTHER INCOME , NET Components of Other Income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Other Income and Expenses [Abstract]
Interest and investment income	$ 54	$ 177	$ 88	$ 329
Income tax expense	(473)	(55)	(861)	(555)
Acquisition related expenses	0	(114)	0	(129)
Other non-operating income	0	0	10	0
Total other income (expense), net	$ (419)	$ 8	$ (763)	$ (355)