Supplemental Consolidated Balance Sheet Information (Tables)

12 Months Ended

Dec. 31, 2012

Supplemental Consolidated Balance Sheet Information [Abstract]

Components of Accounts Receivable

	December 31,		December 31,
	2012		2011
Billed amounts	$	159,399	$	138,664
Engagements in process		54,685		55,350
Allowance for uncollectible accounts		(15,375)		(14,973)
Accounts receivable, net	$	198,709	$	179,041

Components of Prepaid Expenses and Other Current Assets

	December 31,		December 31,
	2012		2011
Notes receivable - current	$	7,701	$	7,579
Other prepaid expenses and other current assets		17,353		15,187
Prepaid expenses and other current assets	$	25,054	$	22,766

Components of Other Assets

	December 31,		December 31,
	2012		2011
Notes receivable - non-current	$	13,916	$	10,707
Prepaid expenses and other non-current assets		16,501		15,246
Other assets	$	30,417	$	25,953

Property and Equipment

	December 31,		December 31,
	2012		2011
Furniture, fixtures and equipment	$	63,497	$	60,935
Software		39,608		35,473
Leasehold improvements		40,052		39,410
Property and equipment, at cost		143,157		135,818
Less: accumulated depreciation and amortization		(97,815)		(94,680)
Property and equipment, net	$	45,342	$	41,138

Components of Other Current Liabilities

	December 31,		December 31,
	2012		2011
Deferred  acquisition liabilities	$	10,863	$	11,732
Deferred revenue		17,366		12,579
Deferred rent		2,995		2,028
Commitments on abandoned real estate (See Note 13)		748		1,222
Interest rate swap liability (See Note 10)		-		417
Other liabilities		3,782		4,644
Other current liabilities	$	35,754	$	32,622

Components of Other Non-Current Liabilities

	December 31,		December 31,
	2012		2011
Deferred acquisition liabilities	$	14,783	$	4,326
Deferred rent - long term		11,034		9,429
Commitments on abandoned real estate (See Note 13)		487		453
Interest rate swap liability (See Note 11)		515		42
Other non-current liabilities		8,787		6,195
Total other non-current liabilities	$	35,606	$	20,445

Schedule of Long and Short-Term Commitment on Abandoned Real Estate

		Office Consolidation
Balance at December 31, 2010	$	4,428
Utilized during the year ended December 31, 2011		(2,753)
Balance at December 31, 2011	$	1,675
Cost to operations during the year ended December 31, 2012		580
Utilized during the year ended December 31, 2012		(1,020)
Balance at December 31, 2012	$	1,235