Selected Quarterly Financial Data - Unaudited (Tables)

12 Months Ended

Dec. 31, 2012

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial Information

A summary of the quarterly data follows:

	First Quarter		Second Quarter		Third Quarter		Fourth Quarter			Total
	($ in thousands)
2012:
Total revenue	$	367,838	$	302,202	$	304,957	$	247,869		$	1,222,866
Costs and expenses	$	334,651	$	272,609	$	300,190	$	254,869		$	1,162,319
Income before income taxes	$	33,187	$	29,593	$	4,767	$	(7,000	)	$	60,547
Net income / (loss)	$	32,795	$	29,326	$	4,396	$	(7,164	)	$	59,353
	First Quarter		Second Quarter		Third Quarter		Fourth Quarter			Total
	($ in thousands)
2011:
Total revenue	$	332,856	$	275,405	$	286,012	$	227,034		$	1,121,307
Costs and expenses	$	291,841	$	242,975	$	273,575	$	223,557		$	1,031,948
Income before income taxes	$	41,015	$	32,430	$	12,437	$	3,477		$	89,359
Net income	$	40,503	$	32,093	$	12,376	$	3,166		$	88,138
	First Quarter		Second Quarter		Third Quarter		Fourth Quarter			Total
	($ in thousands)
2010:
Total revenue	$	297,038	$	245,747	$	263,323	$	219,633		$	1,025,741
Costs and expenses (1)	$	263,405	$	225,975	$	244,838	$	220,437		$	954,655
Income before income taxes	$	33,633	$	19,772	$	18,485	$	(804	)	$	71,086
Net income/ (loss)	$	33,284	$	19,322	$	19,232	$	(1,156	)	$	70,682

(1) Includes net loss on extinguishment of debt.