INTANGIBLE ASSETS (Tables)

12 Months Ended

Dec. 31, 2016

INTANGIBLE ASSETS

Schedule of carrying amount of intangible assets, net of accumulated amortization and impairment charges

	2016
	Gross
	Carrying				Accumulated		Currency		Net Book
	Amount		Acquisitions		Amortization		impact		Value
Amortizable intangibles:
Customer relationships	$	54,450	$	19,273	$	(47,303)	$	(151)	$	26,269
Noncompete agreements		5,670		282		(5,686)		(1)		265
Software		1,583		—		(1,501)		(78)		4
Backlog		5,002		—		(4,974)		(28)		—
Databases		5,444		7,691		(4,774)		(113)		8,248
Trademark and trade names		1,250		—		(923)		—		327
Intangibles	$	73,399	$	27,246	$	(65,161)	$	(371)	$	35,113

	2015
	Gross
	Carrying				Accumulated		Currency		Net Book
	Amount		Acquisitions		Amortization		impact		Value
Amortizable intangibles:
Customer relationships	$	53,466	$	984	$	(41,893)	$	(159)	$	12,398
Noncompete agreements		5,665		5		(5,663)		—		7
Software		1,583		—		(1,501)		(49)		33
Backlog		5,002		—		(4,975)		(27)		—
Databases		5,444		—		(4,420)		(108)		916
Trademark and trade names		1,250		—		(744)		—		506
Intangibles	$	72,410	$	989	$	(59,196)	$	(343)	$	13,860

Schedule of estimated future amortization expense

2017	$	9,079
2018		4,998
2019		4,033
2020		3,459
2021		2,251
Thereafter		11,293
	$	35,113