Income Taxes (Tables)

12 Months Ended

Dec. 31, 2016

Income Tax Disclosure [Abstract]

Components of Deferred Taxes

The components of the deferred taxes recognized in the accompanying consolidated balance sheets at December 31, 2016 and 2015 are as follows (in thousands):

	Year Ended December 31,
	2016			2015
Net operating losses	$	109,236		$	107,655
Book/tax differences in deferred income	4,657			5,302
Book/tax differences in acquired assets	(39,054		)	(36,732		)
Total deferred tax asset	74,839			76,225
Valuation allowance	(74,839		)	(76,225		)
	$	—		$	—