Commitments and Contingencies - Schedule of Long-term Commitments (Detail) $ in Thousands	Dec. 31, 2015 USD ($)
Long-term Debt [Abstract]
Total	$ 34,096
Less than 1 year	2,344
More than 5 years	813
Capital Leases [Abstract]
Total	1,988
Less than 1 year	1,988
1-3 years	0
4-5 years	0
More than 5 years	0
Operating Leases [Abstract]
Total	11,016
Less than 1 year	3,972
1-3 years	3,704
4-5 years	1,952
More than 5 years	1,388
Purchase [Abstract]
Total	79,427
Less than 1 year	75,783
1-3 years	3,474
4-5 years	151
More than 5 years	19
Total
Total	100,020
Less than 1 year	82,763
1-3 years	9,125
4-5 years	4,034
More than 5 years	4,098
Long Term Debt [Member]
Long-term Debt [Abstract]
Total	2,706
Less than 1 year	380
1-3 years	728
4-5 years	785
More than 5 years	813
Interest on Long-term Debt [Abstract]
Total	367
Less than 1 year	95
1-3 years	149
4-5 years	92
More than 5 years	31
Post-Employment Benefit Plan [Member]
Post-Employment Benefit Plan Obligations [Abstract]
Total	4,516
Less than 1 year	545
1-3 years	1,070
4-5 years	1,054
More than 5 years	$ 1,847