Note 13 - Segment and Geographical Information (Tables)

6 Months Ended

Jun. 30, 2015

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,
	2014		2015		2014		2015
IME and other related services (1)	$	172,968	$	175,488	$	327,508	$	342,833
Peer and bill reviews, Medicare compliance services and case management services (1)		23,477		33,250		41,965		62,221
Total revenues	$	196,445	$	208,738	$	369,473	$	405,054

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, 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	)
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 (2)(3)		486,176			21,411			107,338			88,826			703,751
Three months ended June 30, 2015
Revenues	$	132,125		$	9,672		$	46,012		$	20,929		$	208,738
Segment profit		22,752			1,350			7,482			4,773			36,357
Depreciation and amortization expense		9,071			108			2,097			2,453			13,729
Capital expenditures		(1,653	)		(55	)		(245	)		(661	)		(2,614	)
Six months ended June 30, 2015
Revenues	$	253,843		$	17,621		$	93,456		$	40,134		$	405,054
Segment profit		42,274			1,984			15,182			8,869			68,309
Depreciation and amortization expense		18,482			690			4,480			4,925			28,577
Capital expenditures		(3,323	)		(169	)		(434	)		(917	)		(4,843	)
Total assets (3)		699,371			24,212			251,876			85,726			1,061,185
Long-lived assets (2)(3)		472,161			16,041			97,286			67,077			652,565

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,
	2014			2015			2014			2015
Segment Profit	$	34,579		$	36,357		$	62,589		$	68,309
Depreciation and amortization		(14,858	)		(13,729	)		(29,200	)		(28,577	)
Share-based compensation expense		(4,627	)		(6,565	)		(9,980	)		(12,701	)
Acquisition related transaction costs		(762	)		(134	)		(1,954	)		248
Other expenses		(186	)		(66	)		(186	)		(276	)
Income from operations	$	14,146		$	15,863		$	21,269		$	27,003