Selected Quarterly Data (Unaudited)

12 Months Ended

Dec. 31, 2017

Quarterly Financial Information Disclosure [Abstract]

Selected Quarterly Data (Unaudited)

Selected Quarterly Data (Unaudited)

	2017
	Fourth Quarter		Third Quarter		Second Quarter			First Quarter
($ in thousands, except share data)
Revenues	$	128,024	$	123,675	$	94,132		$	79,776
Operating Income (Loss)	28,015		16,789		3,184			10,047
Net Income (Loss) Attributable to Common Stockholders	3,414		16,708		(2,389		)	10,943
Earnings (loss) per share—Basic	$	0.48	$	2.32	$	(0.34	)	$	1.67
Earnings (loss) per share—Diluted	$	0.46	$	2.21	$	(0.34	)	$	1.62

	2016
	Fourth Quarter		Third Quarter		Second Quarter		First Quarter
($ in thousands, except share data)
Revenues	$	79,850	$	82,324	$	80,085	$	80,295
Operating Income (Loss)	12,783		16,538		8,743		12,750
Net Income (Loss) Attributable to Common Stockholders	12,426		15,625		8,088		12,363
Earnings (loss) per share—Basic	$	1.94	$	2.04	$	0.99	$	1.48
Earnings (loss) per share—Diluted	$	1.87	$	1.99	$	0.97	$	1.45