Selected Quarterly Data

12 Months Ended

Dec. 31, 2013

Quarterly Financial Information Disclosure [Abstract]

21. Selected Quarterly Data (Unaudited)


	2013
*($ in thousands, except share data)*	Fourth Quarter		Third Quarter		Second Quarter		First Quarter
Revenues	$	106,498	$	100,409	$	96,140	$	86,168
Operating Income		33,892		31,630		26,882		21,100
Net Income Attributable to Common Stockholders		24,756		21,089		15,385		13,960
Earnings per share—Basic	$	2.72	$	2.64	$	1.97	$	1.79
Earnings per share—Diluted	$	2.65	$	2.56	$	1.91	$	1.73


	2012
	Fourth Quarter		Third Quarter		Second Quarter		First Quarter
Revenues	$	78,919	$	71,951	$	66,818	$	62,398
Operating Income		20,472		17,767		14,253		7,953
Net Income Attributable to Common Stockholders		12,213		11,642		8,367		5,386
Earnings per share—Basic	$	1.56	$	1.48	$	1.08	$	0.72
Earnings per share—Diluted	$	1.50	$	1.43	$	1.04	$	0.68

- Definition

The entire disclosure for the quarterly financial data in the annual financial statements. The disclosure may include a tabular presentation of financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income or loss before extraordinary items and earnings per share data. It also includes an indication if the information in the note is unaudited, comments on the aggregate effect of year-end adjustments, and an explanation of matters or transactions that affect comparability or are pertinent to an understanding of the information furnished.

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