Note 13 - Segment and Geographical Information (Tables)

6 Months Ended

Jun. 30, 2014

Segment Reporting [Abstract]

Revenue from External Customers by Products and Services [Table Text Block]

Revenues:	For the three months ended June 30,				For the six months ended June 30,
	2013		2014		2013		2014
IME and other related services (1)	$	144,292	$	172,968	$	281,626	$	327,508
Peer and bill reviews, Medicare compliance services and case management (1)		11,856		23,477		23,225		41,965
Total revenues	$	156,148	$	196,445	$	304,851	$	369,473

Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block]

	United						United
	States			Canada			Kingdom			Australia			Total
Three months ended June 30, 2013
Revenues	$	95,493		$	8,275		$	35,274		$	17,106		$	156,148
Segment profit		12,852			1,255			6,654			4,245			25,006
Depreciation and amortization expense		8,257			2,207			2,843			2,515			15,822
Capital expenditures		(710	)		(7	)		(265	)		(561	)		1,543

	United						United
	States			Canada			Kingdom			Australia			Total
Six months ended June 30, 2013
Revenues	$	186,671		$	15,696		$	69,041		$	33,443		$	304,851
Segment profit		23,771			2,540			13,498			8,202			48,011
Depreciation and amortization expense		16,879			4,244			5,886			5,139			32,148
Capital expenditures		(1,629	)		(18	)		(1,001	)		(665	)		(3,313	)
Total assets (3)		398,012			36,448			192,989			90,010			717,459
Long-lived assets (3)		322,248			28,599			91,128			77,879			519,854

	United						United
	States			Canada			Kingdom			Australia			Total
Three months ended June 30, 2014
Revenues	$	117,343		$	8,578		$	48,665		$	21,859		$	196,445
Segment profit		20,629			1,165			8,378			4,407			34,579
Depreciation and amortization expense		8,169			711			3,094			2,885			14,858
Capital expenditures		(2,462	)		(8	)		(228	)		(201	)		(2,899	)

	United						United
	States			Canada			Kingdom			Australia			Total
Six months ended June 30, 2014
Revenues	$	223,392		$	16,085		$	90,718		$	39,278		$	369,473
Segment profit		36,583			2,263			15,459			8,284			62,589
Depreciation and amortization expense		15,888			1,522			6,269			5,521			29,200
Capital expenditures		(2,864	)		(9	)		(517	)		(220	)		(3,610	)
Total assets (3)		575,153			28,904			244,176			101,459			949,692
Long-lived assets (3)		486,176			21,411			107,338			88,826			703,751

Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block]

	For the three months ended June 30,						For the six months ended June 30,
	2013			2014			2013			2014
Segment Profit	$	25,006		$	34,579		$	48,011		$	62,589
Depreciation and amortization		(15,822	)		(14,858	)		(32,148	)		(29,200	)
Share-based compensation expense		(4,283	)		(4,627	)		(8,414	)		(9,980	)
Acquisition related transaction costs		(458	)		(762	)		(907	)		(1,954	)
Other expenses		(311	)		(186	)		(674	)		(186	)
Income from operations	$	4,132		$	14,146		$	5,868		$	21,269