Employee Benefit Plans - Estimated Amount that will be Recognized From Accumulated Other Comprehensive Income (Loss) into Net Periodic Benefit Cost (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($)
Pension Benefit Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Actuarial net loss	$ 0
Net prior service credits	0
Net amount recognized	0
Post-Employment Benefit Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Actuarial net loss	(269)
Net prior service credits	338
Net amount recognized	$ 69