Other Income (Expenses) (Notes)

12 Months Ended

Dec. 31, 2014

Other Income and Expenses [Abstract]

OTHER INCOME (EXPENSE)

OTHER INCOME (EXPENSE)

The principal components of other income (expense), net are as follows (in thousands):

	Year Ended December 31,
	2014			2013			2012
Interest and investment income	$	155		$	148		$	336
Income tax expense	(460		)	(645		)	(1,016		)
Acquisition related expenses	—			—			(152		)
Other non-operating income	746			10			203
Total other income (expense)	$	441		$	(487	)	$	(629	)