Segment Information (Tables)

9 Months Ended

Sep. 30, 2014

Segment Reporting [Abstract]

Summary of revenue by segment

The following table summarizes the Company’s revenue by segment:

	Quarter Ended				Nine Months Ended
	September 30,				September 30,
	2013		2014		2013		2014
Revenue
Imaging	$	93,658	$	86,587	$	280,244	$	258,522
Radiation Oncology	19,717		23,550		57,931		68,218
Total	$	113,375	$	110,137	$	338,175	$	326,740

The following are components of revenue:

	Quarter Ended				Nine Months Ended
	September 30,				September 30,
	2013		2014		2013		2014
Revenue
MRI revenue	$	46,938	$	45,719	$	140,378	$	135,541
PET/CT revenue	36,089		33,542		110,495		101,089
Radiation Oncology revenue	19,717		23,550		57,931		68,218
Other modalities and other revenue	10,631		7,326		29,371		21,892
Total	$	113,375	$	110,137	$	338,175	$	326,740

Summary of segment income

The following table summarizes the Company’s segment income:

	Quarter Ended						Nine Months Ended
	September 30,						September 30,
	2013			2014			2013			2014
Segment income
Imaging	$	39,251		$	32,265		$	112,725		$	96,523
Radiation Oncology	8,871			10,910			25,678			31,400
Corporate / Other	(9,566		)	(8,222		)	(26,101		)	(23,349		)
Total	$	38,556		$	34,953		$	112,302		$	104,574

Reconciliation of Net loss to total segment income

The reconciliation of Net (loss) income to total segment income is shown below:

	Quarter Ended						Nine Months Ended
	September 30,						September 30,
	2013			2014			2013			2014
Net (loss) income attributable to Alliance HealthCare Services, Inc.	$	(2,070	)	$	4,011		$	(17,452	)	$	8,727
Income tax (benefit) expense	(2,392		)	2,948			(9,725		)	6,256
Interest expense and other, net	8,156			6,208			31,481			18,570
Amortization expense	2,151			1,961			8,856			5,870
Depreciation expense	16,965			12,743			49,803			42,812
Share-based payment (included in selling, general and administrative expenses)	301			407			1,036			1,117
Severance and related costs	—			455			—			2,315
Noncontrolling interest in subsidiaries	3,402			3,843			9,741			10,928
Restructuring charges (Note 2)	1,809			(264		)	5,172			2,191
Transaction costs	7			573			87			1,512
Impairment charges	4,529			4			9,396			240
Loss on extinguishment of debt	5,132			—			22,201			—
Legal settlements	514			2,000			1,464			3,621
Other non-cash charges (included in other income and expense, net)	52			64			242			415
Total segment income	$	38,556		$	34,953		$	112,302		$	104,574

Summary of net income (loss) by segment

The following table summarizes the Company’s net income (loss) by segment:

	Quarter Ended						Nine Months Ended
	September 30,						September 30,
	2013			2014			2013			2014
Net (loss) income
Imaging	$	18,612		$	21,096		$	56,358		$	58,913
Radiation Oncology	2,499			4,534			6,530			12,602
Corporate / Other	(23,181		)	(21,619		)	(80,340		)	(62,788		)
Total	$	(2,070	)	$	4,011		$	(17,452	)	$	8,727

Summary of Company's identifiable assets by segment

The following table summarizes the Company’s identifiable assets by segment:

	As of December 31, 2013		As of September 30, 2014
Identifiable assets
Imaging	$	240,317	$	220,496
Radiation Oncology	158,216		149,587
Corporate / Other	91,314		103,384
Total	$	489,847	$	473,467

Summary of company's goodwill by segment

The following table summarizes the Company’s goodwill by segment:

	Imaging			Radiation Oncology			Corporate / Other		Total
Balance at January 1, 2013	$	41,684		$	14,809		$	—	$	56,493
Goodwill acquired during the period	—			—			—		—
Impairment charges	—			—			—		—
Adjustments to goodwill during the period	482			—			—		482
Balance at December 31, 2013	$	42,166		$	14,809		$	—	$	56,975
Goodwill acquired during the period	—			—			—		—
Impairment charges	—			—			—		—
Adjustments to goodwill during the period	—			—			—		—
Balance at September 30, 2014	$	42,166		$	14,809		$	—	$	56,975
Gross goodwill	$	196,508		$	34,711		$	—	$	231,219
Accumulated impairment charges	(154,342		)	(19,902		)	—		(174,244		)
Balance at September 30, 2014	$	42,166		$	14,809		$	—	$	56,975