Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Taxes [Line Items]
Foreign pre-tax earnings	$ 58,000	$ 41,000	$ 15,000
Effective income tax rate, foreign	20.00%
Undistributed foreign earnings	$ 99,000
Unrecognizable deferred tax liability related to foreign earnings	$ 15,000
Effective tax rates	35.40%	34.50%	34.90%
Effective tax rates including income attributable to noncontrolling interests	36.80%	36.70%	37.30%
Deferred federal and state tax benefit	$ 10,000	$ 42,000
Future taxable income, amount	1,040,000
Deferred state tax benefit (net of the federal benefit)	(820)	(302)	$ 7,525
Deferred foreign tax benefit	5,000
Net operating losses	66,639	62,541
Deferred federal tax benefits	(12,092)	(15,912)	$ 41,583
Valuation allowances	56,333	52,567
Increase in estimated liabilities for uncertain tax positions	1,000	1,000
Impact of unrecognized tax benefits if recognized	$ 1,000	1,000
Period of expiration of the statute of limitations for certain jurisdictions	Within the next twelve months
Jurisdictions statutes of limitations expiration period	12 months
Maximum
Income Taxes [Line Items]
Decrease in estimated liabilities for uncertain tax positions due to the lapse of the statute of limitations	$ 1,000
Accrued interest and penalties	$ 1,000	1,000
Foreign and U.S. state and local jurisdictions have statutes of limitations, in years	4 years
Minimum
Income Taxes [Line Items]
Foreign and U.S. state and local jurisdictions have statutes of limitations, in years	3 years
Allowance in relation to state tax benefit
Income Taxes [Line Items]
Valuation allowances	$ 52,000	51,000
Net Operating Losses
Income Taxes [Line Items]
Increase in valuation allowance	1,000
Foreign Net Operating Losses and Credit Carryforwards
Income Taxes [Line Items]
Increase in valuation allowance	4,000	$ 2,000
Foundations Recovery Network, LLC
Income Taxes [Line Items]
Deferred federal tax benefits	2,000
Cambian Adult Services | Foreign Valuation Allowance
Income Taxes [Line Items]
Increase in valuation allowance	3,000
State and Local Jurisdiction
Income Taxes [Line Items]
Deferred state tax benefit (net of the federal benefit)	52,000
Foreign Tax Authority
Income Taxes [Line Items]
Net operating losses and credit	21,000
Federal Tax Authority | Foundations Recovery Network, LLC
Income Taxes [Line Items]
Net operating losses	$ 7,000