Quarterly Results of Operations (unaudited)

12 Months Ended

Dec. 31, 2015

Quarterly Results of Operations (unaudited) [Abstract]

Quarterly Financial Information [Text Block]

Quarterly Results of Operations (unaudited)

The following table summarizes quarterly financial data for the years ended December 31, 2015 and 2014 (in thousands, except per share data):

	First Quarter			Second Quarter			Third Quarter			Fourth Quarter			Total
Year ended December 31, 2015
Revenues	$	193,814		$	135,011		$	107,480		$	104,473		$	540,778
Income (loss) from operations	(8,334		)	(75,108		)	(17,972		)	(65,286		)	(166,700		)
Income tax (expense) benefit	4,450			2,586			6,682			23,861			37,579
Net income (loss)	(12,019		)	(77,281		)	(17,540		)	(48,300		)	(155,140		)
Earnings (loss) per share:
Basic	$	(0.19	)	$	(1.20	)	$	(0.27	)	$	(0.75	)	$	(2.41	)
Diluted	$	(0.19	)	$	(1.20	)	$	(0.27	)	$	(0.75	)	$	(2.41	)
Year ended December 31, 2014
Revenues	$	239,034		$	259,812		$	273,267		$	283,110		$	1,055,223
Income (loss) from operations	17,935			21,917			32,804			(48,672		)	23,984
Income tax (expense) benefit	(37		)	1,070			(9,927		)	20,198			11,304
Net income (loss)	(2,579		)	(319		)	12,453			(47,573		)	(38,018		)
Earnings (loss) per share:
Basic	$	(0.04	)	$	(0.01	)	$	0.20		$	(0.75	)	$	(0.60	)
Diluted	$	(0.04	)	$	(0.01	)	$	0.19		$	(0.75	)	$	(0.60	)