Income Taxes (Tables)

12 Months Ended

Dec. 31, 2015

Income Tax Disclosure [Abstract]

Components of income tax expense

Components of income tax expense were as follows (in thousands):

	Year Ended December 31,
	2015			2014		2013
Current U.S. state	$	479		$	505	$	493
Deferred U.S. state	(228		)	43		941
Income tax expense	$	251		$	548	$	1,434