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Goodwill and Intangible Assets (Tables)
 12 Months Ended
Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill by Reportable Segment
Goodwill by reportable segments during 2017 and 2016 was as follows (in thousands):
 
 
Recovery
Audit
Services –
Americas
 
Recovery Audit
Services –
Europe/Asia-
Pacific
 
Adjacent
Services
 
Total
Balance, January 1, 2016
 
$
10,755

 
$
813

 
$
242

 
$
11,810

Goodwill recorded in connection with business combinations
 
—

 
—

 
2,146

 
2,146

Foreign currency translation
 
—

 
(133
)
 
—

 
(133
)
Balance, December 31, 2016
 
10,755

 
680

 
2,388

 
13,823

Goodwill recorded in connection with business combinations
 
2,685

 
869

 
140

 
3,694

Foreign currency translation
 
—

 
131

 
—

 
131

Balance, December 31, 2017
 
$
13,440

 
$
1,680

 
$
2,528

 
$
17,648
Schedule of Changes in Noncurrent Intangible Assets
Changes in noncurrent intangible assets during 2017 and 2016 were as follows (in thousands):
 
 
Customer
Relationships
 
Trademarks
 
Non-
compete
Agreements
 
Software
 
Trade
Names
 
Total
Gross carrying amount:
 
 
 
 
 
 
 
 
 
 
 
 
Balance, January 1, 2016
 
$
37,784

 
$
931

 
$
1,477

 
$
—

 
$
2,200

 
$
42,392

Acquisition of Lavante Assets
 
—

 
—

 
—

 
6,178

 
—

 
6,178

FX adjustments and other
 
(1,211
)
 
(78
)
 
(155
)
 
—

 
—

 
(1,444
)
Balance, December 31, 2016
 
36,573

 
853

 
1,322

 
6,178

 
2,200

 
47,126

Acquisition of C&CA Assets
 
9,556

 
135

 
1,232

 
—

 
—

 
10,923

FX adjustments and other
 
777

 
38

 
75

 
—

 
—

 
890

Balance, December 31, 2017
 
$
46,906

 
$
1,026

 
$
2,629

 
$
6,178

 
$
2,200

 
$
58,939

Accumulated amortization:
 
 
 
 
 
 
 
 
 
 
 
 
Balance, January 1, 2016
 
$
(31,246
)
 
$
(881
)
 
$
(1,381
)
 
$
—

 
$
(2,200
)
 
$
(35,708
)
Amortization expense
 
(1,414
)
 
(50
)
 
(96
)
 
(272
)
 
—

 
(1,832
)
FX adjustments and other
 
1,179

 
78

 
155

 
—

 
—

 
1,412

Balance, December 31, 2016
 
(31,481
)
 
(853
)
 
(1,322
)
 
(272
)
 
(2,200
)
 
(36,128
)
Amortization expense
 
(1,796
)
 
(22
)
 
(204
)
 
(1,612
)
 
—

 
(3,634
)
FX adjustments and other
 
(585
)
 
(38
)
 
(76
)
 
—

 
—

 
(699
)
Balance, December 31, 2017
 
$
(33,862
)
 
$
(913
)
 
$
(1,602
)
 
$
(1,884
)
 
$
(2,200
)
 
$
(40,461
)
Net carrying amount:
 
 
 
 
 
 
 
 
 
 
 
 
Balance, December 31, 2016
 
$
5,092

 
$
—

 
$
—

 
$
5,906

 
$
—

 
$
10,998

Balance, December 31, 2017
 
$
13,044

 
$
113

 
$
1,027

 
$
4,294

 
$
—

 
$
18,478

Estimated useful life (years)
 
6-15 years

 
5 years

 
1-5 years

 
4 years

 
4-5 years