Long-Term Cash Incentive Plan - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Performance period	3 years
Long term incentive plan compensation	$ (4,314)	$ 360
Long Term Incentive Plan 2016
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Estimated payments for employee long term incentive plan	5,600
Long term incentive plan compensation	$ 466