Discontinued Operations - Summary of Assets and Liabilities of Discontinued Operations (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Assets:
Cash and cash equivalents	$ 0	$ 0
Trust and restricted cash		2,411
Accounts receivable net of allowance of $0 and $521		92,699
Deferred income taxes		8,974
Other assets		5,499
Property and equipment, net	17,672	38,146
Goodwill		152,716
Intangible and other assets		4,160
Total assets held for sale	17,672	304,605
Liabilities:
Accounts payable		19,660
Accrued expenses		29,249
Deferred income taxes		33,181
Other liabilities		2,698
Total liabilities held for sale		84,788
Net assets held for sale	$ 17,672	$ 219,817