Operating Segments and Related Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Segment information
Revenue	$ 53,109	$ 52,087	$ 51,658	$ 51,649	$ 49,944	$ 51,751	$ 50,704	$ 50,718	$ 208,503	$ 203,117	$ 184,081
Net earnings	1,533	2,565	1,002	292	1,312	422	710	372	5,392	2,816	3,253
Income tax expense (benefit)	(289)	505	584	497	(1,206)	593	784	1,121	1,297	1,292	1,882
Interest expense, net									966	1,616	1,305
Loss on debt extinguishment											1,381
EBIT									7,655	5,724	7,821
Depreciation of property and equipment	2,276	1,716	1,579	1,513	1,542	1,464	1,214	1,181	7,084	5,401	4,903
Amortization of intangible assets	2,007	1,431	1,459	2,327	1,464	1,277	1,129	1,121	7,224	4,991	4,131
EBITDA									21,963	16,116	16,855
Foreign currency transaction (gains) losses on short-term intercompany balances	187	348	(497)	339	(241)	(1,055)	431	448	(377)	417	422
Acquisition transaction costs and acquisition obligations classified as compensation									382	800	371
Transformation severance and related expenses									2,107	2,031
Wage claim costs									984
Stock-based compensation									6,321	5,093	3,980
Adjusted EBITDA									31,380	24,457	21,628
Capital expenditures									7,931	8,287	6,934
Allocated assets	100,741				100,326				100,741	100,326
Unallocated assets:
Cash and cash equivalents	37,806				20,337				37,806	20,337	18,448	33,026
Restricted cash	65				64				65	64
Deferred loan costs	193				376				193	376
Deferred income taxes	1,604				854				1,604	854
Prepaid expenses and other assets	3,177				4,456				3,177	4,456
Total assets	143,586				126,413				143,586	126,413
Recovery Audit Services - Americas [Member]
Segment information
Revenue									121,638	115,807	115,156
EBIT									28,589	26,280	(25,062)
Depreciation of property and equipment									4,651	3,491	3,442
Amortization of intangible assets									4,355	2,467	2,427
EBITDA									37,595	32,238	30,931
Foreign currency transaction (gains) losses on short-term intercompany balances									(44)	144	33
Transformation severance and related expenses									493	1,465
Wage claim costs									577
Adjusted EBITDA									38,621	33,847	30,964
Capital expenditures									5,699	5,459	5,674
Allocated assets	57,722				62,702				57,722	62,702
Unallocated assets:
Total assets	57,722				62,702				57,722	62,702
Recovery Audit Services - Europe/Asia- Pacific [Member]
Segment information
Revenue									53,783	61,570	57,590
EBIT									5,035	7,484	(6,478)
Depreciation of property and equipment									322	417	354
Amortization of intangible assets									2,062	1,665	1,403
EBITDA									7,419	9,566	8,235
Foreign currency transaction (gains) losses on short-term intercompany balances									(331)	272	391
Transformation severance and related expenses									1,156	566
Adjusted EBITDA									8,244	10,404	8,626
Capital expenditures									846	1,041	329
Allocated assets	17,893				20,308				17,893	20,308
Unallocated assets:
Total assets	17,893				20,308				17,893	20,308
New Services [Member]
Segment information
Revenue									33,082	25,740	11,335
EBIT									(3,803)	(6,951)	6,804
Depreciation of property and equipment									2,111	1,493	1,107
Amortization of intangible assets									807	859	301
EBITDA									(885)	(4,599)	(5,396)
Foreign currency transaction (gains) losses on short-term intercompany balances										1	(2)
Acquisition transaction costs and acquisition obligations classified as compensation									382	440	371
Transformation severance and related expenses									394
Wage claim costs									407
Adjusted EBITDA									298	(4,158)	(5,027)
Capital expenditures									1,386	1,787	931
Allocated assets	25,126				17,316				25,126	17,316
Unallocated assets:
Total assets	25,126				17,316				25,126	17,316
Corporate Support [Member]
Segment information
EBIT									(22,166)	(21,089)	16,915
EBITDA									(22,166)	(21,089)	(16,915)
Foreign currency transaction (gains) losses on short-term intercompany balances									(2)
Acquisition transaction costs and acquisition obligations classified as compensation										360
Transformation severance and related expenses									64
Stock-based compensation									6,321	5,093	3,980
Adjusted EBITDA									(15,783)	(15,636)	(12,935)
Unallocated assets:
Cash and cash equivalents	37,806				20,337				37,806	20,337
Restricted cash	65				64				65	64
Deferred loan costs	193				376				193	376
Deferred income taxes	1,604				854				1,604	854
Prepaid expenses and other assets	3,177				4,456				3,177	4,456
Total assets	$ 42,845				$ 26,087				$ 42,845	$ 26,087