Quarterly Financial Information (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2011

Quarterly Financial Information (Tables) [Abstract]

Unaudited Quarterly Financial Data

	2011
	First Quarter			Second Quarter			Third Quarter			Fourth Quarter
Revenues	$	220,738		$	236,775		$	225,232		$	269,399
Depreciation and amortization		29,057			29,271			32,367			34,594
Operating income		14,726			31,200			13,837			19,768
Income (loss) before income taxes and discontinued operations		(2,928	)		13,432			(722	)		7,706
(Provision) benefit for income taxes		967			(4,799	)		(937	)		(2,651	)
Income (loss) from continuing operations		(1,961	)		8,633			(1,659	)		5,055
Income from discontinued operations, net of taxes		4			4			53			48
Net income (loss)		(1,957	)		8,637			(1,606	)		5,103
Net income (loss) per share		(0.04	)		0.18			(0.03	)		0.11
Net income (loss) per share — assuming dilution		(0.04	)		0.17			(0.03	)		0.10

	2010
	First Quarter			Second Quarter			Third Quarter			Fourth Quarter
Revenues	$	214,481		$	183,879		$	158,272		$	213,329
Depreciation and amortization		27,071			25,951			25,254			27,285
Operating income (loss)		14,953			(20,693	)		(32,616	)		(27,630	)
Loss before income taxes and discontinued operations		(827	)		(37,744	)		(49,229	)		(45,116	)
(Provision) benefit for income taxes		(975	)		11,697			17,403			12,593
Loss from continuing operations		(1,802	)		(26,047	)		(31,826	)		(32,523	)
Income (loss) from discontinued operations, net of taxes		(48	)		3,327			46			(255	)
Net loss		(1,850	)		(22,720	)		(31,780	)		(32,778	)
Net loss per share		(0.04	)		(0.48	)		(0.67	)		(0.69	)
Net loss per share — assuming dilution		(0.04	)		(0.48	)		(0.67	)		(0.69	)