Selected Quarterly Financial Data (unaudited) (Tables)

12 Months Ended

Dec. 31, 2015

Quarterly Financial Information Disclosure [Abstract]

Schedule of Selected Quarterly Statements of Income Data

The following tables set forth selected quarterly statements of income data for the periods indicated (dollars in thousands, except share and per share amounts):

	Quarter Ended
	December 31, 2015		September 30, 2015		June 30, 2015		March 31, 2015
Revenues	$	65,118	$	55,340	$	48,973	$	55,222
Operating income		6,234		6,855		10,808		10,538
Net income		5,157		3,847		5,946		5,995
Net income per share, basic	$	0.09	$	0.07	$	0.10	$	0.11
Net income per share, diluted	$	0.09	$	0.07	$	0.10	$	0.11
Weighted average shares outstanding:
Basic		57,109,987		57,050,684		57,038,021		54,749,951
Diluted		58,365,587		58,367,830		58,369,083		56,562,661

The following tables set forth selected quarterly statements of income data for the periods indicated (dollars in thousands, except share and per share amounts):

	Quarter Ended
	December 31, 2014		September 30, 2014		June 30, 2014			March 31, 2014
Revenues	$	44,040	$	36,598	$	33,306		$	36,985
Operating income		4,787		4,678		3,094			3,141
Net income (loss)		2,506		2,690		(593	)		1,060
Net income (loss) per share, basic	$	0.05	$	0.05	$	(0.01	)	$	0.02
Net income (loss) per share, diluted	$	0.05	$	0.05	$	(0.01	)	$	0.02
Weighted average shares outstanding:
Basic		52,018,730		51,056,462		50,284,362			45,721,584
Diluted		53,855,629		52,978,051		50,284,362			48,371,169