Income Taxes - Schedule of Components of Deferred Income Tax Assets and Liabilities for Continuing Operations (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Accrued occupancy	$ 4,191	$ 2,024
Deferred rent obligations	9,281	13,757
Foreign tax credits	32,998	32,998
Valuation allowance foreign tax credits	(32,998)	(6,264)
Compensation and employee benefits	12,751	14,405
Tax net operating loss carry forwards	61,982	34,067
Valuation allowance	(8,196)	(34,067)
Allowance for doubtful accounts	3,967	3,610
Covenant not-to-compete	11	58
Accrued settlements and legal	938	1,631
Deferred compensation	520	1,777
Accrued restructuring and severance	6,014	1,072
Equity method for investments	256	19
General business tax credits	699	450
Illinois edge credits	6,351	6,351
Valuation allowance edge credits	(6,351)	(6,351)
Depreciation and amortization	47,453	32,846
Other	712	1,059
Valuation allowance deferred tax assets		(96,061)
Total deferred income tax assets	140,579	3,381
Other	2,863	3,381
Total deferred income tax liabilities	2,863	$ 3,381
Net deferred income tax assets	$ 137,716