Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2014

Quarterly Financial Data (Unaudited)

Summary of Quarterly Financial Data

	Fourth Quarter		Third Quarter		Second Quarter		First Quarter
Year ended December 31, 2014
Oil and gas sales	$	6,700	$	7,550	$	9,320	$	10,566
Income (loss) from operations	$	3,668	$	(1,971)	$	(2,917)	$	(4,615)
Net income (loss)	$	2,405	$	(2,521)	$	(3,083)	$	(4,386)
Net income (loss) attributable to common stock	$	1,474	$	(3,451)	$	(4,014)	$	(5,317)
Basic net income (loss) per common share	$	0.15	$	(0.24)	$	(0.29)	$	(0.45)
Diluted net income (loss) per common share	$	0.15	$	(0.24)	$	(0.29)	$	(0.45)
Year ended December 31, 2013
Oil and gas sales	$	8,150	$	7,599	$	8,502	$	7,533
Income (loss) from operations	$	(9,235)	$	(2,310)	$	696	$	(7,577)
Net income (loss)	$	(6,406)	$	(1,852)	$	361	$	(5,176)
Net loss attributable to common stock	$	(7,337)	$	(2,782)	$	(570)	$	(6,107)
Basic net loss per common share	$	(0.64)	$	(0.25)	$	(0.05)	$	(0.54)
Diluted net loss per common share	$	(0.64)	$	(0.25)	$	(0.05)	$	(0.54)