Operating Segments and Related Information (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment information
Revenue, net	$ 34,957	$ 33,365	$ 36,995	$ 32,985	$ 40,233	$ 42,844	$ 41,692	$ 36,783	$ 138,302	$ 161,552	$ 178,268
Net income (loss) from continuing operations									1,539	(2,699)	2,054
Income tax expense	(803)	421	296	455	2,388	554	186	113	369	3,241	2,755
Interest income, net	(87)	(8)	(53)	(42)	(44)	(44)	(43)	54	(190)	(77)	(77)
EBIT									1,718	465	4,732
Depreciation of property and equipment	1,489	1,255	1,294	1,279	1,505	1,406	1,552	1,562	5,317	6,025	6,783
Amortization of intangible assets	441	517	754	746	831	895	902	903	2,458	3,531	4,997
EBITDA									9,493	10,021	16,512
Impairment charges									0	0	2,773
Foreign currency transaction (gains) losses on short-term intercompany balances	235	654	(416)	1,692	930	1,221	(163)	15	2,165	2,003	(13)
Acquisition-related charges (benefits)									0	249	602
Transformation severance and related expenses									1,249	3,640	2,457
Other loss	(421)	$ 1,612	$ 0	$ 0	57	$ 0	$ 0	$ 0	1,191	57	0
Stock-based compensation									3,926	4,532	6,294
Adjusted EBITDA									18,024	20,502	28,625
Capital expenditures									4,482	4,704	6,449
Allocated assets	59,540				73,404				59,540	73,404	77,677
Cash and cash equivalents	15,122				25,735				15,122	25,735	43,700	$ 37,806
Restricted cash	48				53				48	53
Deferred income taxes	1,361				41				1,361	41
Total assets	80,391				102,782				80,391	102,782	132,829
Continuing Operations [Member]
Segment information
Cash and cash equivalents	15,122				25,735				15,122	25,735	43,700
Restricted cash	48				53				48	53	57
Deferred loan costs	80								80
Deferred income taxes	1,361				41				1,361	41	1,708
Prepaid expenses and other assets	2,465				2,729				2,465	2,729	2,254
Discontinued Operations [Member]
Segment information
Discontinued operations	1,775				820				1,775	820	7,433
Recovery Audit Services - Americas [Member]
Segment information
Revenue, net									97,009	106,533	118,649
EBIT									22,539	21,066	27,094
Depreciation of property and equipment									4,036	4,711	5,617
Amortization of intangible assets									1,728	2,002	2,792
EBITDA									28,303	27,779	35,503
Impairment charges											2,702
Foreign currency transaction (gains) losses on short-term intercompany balances									807	380	327
Acquisition-related charges (benefits)									0	0	1,315
Transformation severance and related expenses									322	1,348	107
Other loss									0	0
Stock-based compensation									0	0	0
Adjusted EBITDA									29,432	29,507	39,954
Capital expenditures									3,669	3,930	5,292
Allocated assets	44,588				50,252				44,588	50,252	55,978
Total assets	44,588				50,252				44,588	50,252	55,978
Recovery Audit Services - Europe/Asia-Pacific [Member]
Segment information
Revenue, net									36,264	44,319	46,436
EBIT									2,573	2,772	3,901
Depreciation of property and equipment									647	592	514
Amortization of intangible assets									600	1,195	1,508
EBITDA									3,820	4,559	5,923
Impairment charges											0
Foreign currency transaction (gains) losses on short-term intercompany balances									1,533	1,828	(316)
Acquisition-related charges (benefits)									0	0	(900)
Transformation severance and related expenses									589	1,285	1,135
Other loss									0	0
Stock-based compensation									0	0	0
Adjusted EBITDA									5,942	7,672	5,842
Capital expenditures									543	651	781
Allocated assets	13,922				18,556				13,922	18,556	16,706
Total assets	13,922				18,556				13,922	18,556	16,706
Adjacent Services [Member]
Segment information
Revenue, net									5,029	10,700	13,183
EBIT									(5,131)	(4,161)	(3,480)
Depreciation of property and equipment									634	722	652
Amortization of intangible assets									130	334	697
EBITDA									(4,367)	(3,105)	(2,131)
Impairment charges											71
Foreign currency transaction (gains) losses on short-term intercompany balances									12	0	0
Acquisition-related charges (benefits)									0	249	187
Transformation severance and related expenses									30	418	81
Other loss									1,191	57
Stock-based compensation									0	0	0
Adjusted EBITDA									(3,134)	(2,381)	(1,792)
Capital expenditures									270	123	376
Allocated assets	1,030				4,596				1,030	4,596	4,993
Total assets	1,030				4,596				1,030	4,596	4,993
Corporate Support [Member]
Segment information
Revenue, net									0	0	0
EBIT									(18,263)	(19,212)	(22,783)
Depreciation of property and equipment									0	0	0
Amortization of intangible assets									0	0	0
EBITDA									(18,263)	(19,212)	(22,783)
Impairment charges											0
Foreign currency transaction (gains) losses on short-term intercompany balances									(187)	(205)	(24)
Acquisition-related charges (benefits)									0	0	0
Transformation severance and related expenses									308	589	1,134
Other loss									0	0
Stock-based compensation									3,926	4,532	6,294
Adjusted EBITDA									(14,216)	(14,296)	(15,379)
Capital expenditures									0	0	0
Allocated assets	0				0				0	0	0
Total assets	20,851				29,378				20,851	29,378	55,152
Corporate Support [Member] | Continuing Operations [Member]
Segment information
Cash and cash equivalents	15,122				25,735				15,122	25,735	43,700
Restricted cash	48				53				48	53	57
Deferred loan costs	80								80
Deferred income taxes	1,361				41				1,361	41	1,708
Prepaid expenses and other assets	2,465				2,729				2,465	2,729	2,254
Corporate Support [Member] | Discontinued Operations [Member]
Segment information
Discontinued operations	$ 1,775				$ 820				$ 1,775	$ 820	$ 7,433