Note 13 - Segment and Geographical Information (Tables)

12 Months Ended

Dec. 31, 2015

Segment Reporting [Abstract]

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

Revenues:	For the years ended December 31,
	2013		2014		2015
IME and other related services (1)	$	567,070	$	674,229	$	695,382
Peer and bill reviews, Medicare compliance and case management services (1)		48,946		101,386		124,185
Total revenues	$	616,016	$	775,615	$	819,567

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

	United States			Canada			United Kingdom			Australia			Total
2013
Revenues	$	374,817		$	31,131		$	143,418		$	66,650		$	616,016
Segment profit(1)		46,934			5,137			29,439			15,951			97,461
Depreciation and amortization expense		31,787			9,518			11,566			9,877			62,748
Capital expenditures		(3,197	)		(19	)		(1,781	)		(1,547	)		(6,544	)
Total assets (3)		396,635			30,061			221,681			84,136			732,513
Long-lived assets (2)(3)		315,748			23,056			100,796			72,979			512,579
2014
Revenues	$	468,419		$	32,889		$	189,755		$	84,552		$	775,615
Segment profit(1)		76,065			4,673			32,921			18,481			132,140
Depreciation and amortization expense		34,302			2,824			12,048			11,106			60,280
Capital expenditures		(7,687	)		(37	)		(1,254	)		(1,916	)		(10,894	)
Total assets (3)		577,974			25,807			239,260			87,103			930,144
Long-lived assets(2)(3)		473,800			18,178			96,635			73,721			662,334
2015
Revenues	$	511,324		$	37,473		$	190,204		$	80,566		$	819,567
Segment profit(1)		82,751			5,413			34,786			17,795			140,745
Depreciation and amortization expense		36,101			853			9,270			9,467			55,691
Capital expenditures		(7,171	)		(248	)		(1,380	)		(2,390	)		(11,190	)
Total assets (3)		637,469			26,970			304,917			82,325			1,051,681
Long-lived assets(2)(3)		467,664			16,063			134,464			60,130			678,321

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

	2013			2014			2015
Segment Profit	$	97,461		$	132,140		$	140,745
Depreciation and amortization		(62,748	)		(60,280	)		(55,691	)
Share-based compensation expense		(17,157	)		(20,024	)		(22,289	)
Acquisition-related transaction costs		(2,134	)		(3,535	)		(2,421	)
Other expenses		(1,353	)		(1,201	)		388
Income from operations	$	14,069		$	47,100		$	60,732