Intangibles, Net - Additional Information (Detail) - USD ($)
$ in Millions |
12 Months Ended |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
| Finite-Lived Intangible Assets [Line Items] |
|
|
|
| Intangible assets, amortization expense |
$ 4.4
|
$ 3.2
|
$ 2.7
|
| Intangible assets acquired |
|
19.2
|
|
| Amortization of intangible assets calculation |
Amortization of intangible assets is calculated by the sum-of-the-years’-digits method over the periods of expected benefit.
|
|
|
| Estimated future annual amortization expense of intangible assets, 2016 |
$ 4.0
|
|
|
| Estimated future annual amortization expense of intangible assets, 2017 |
3.4
|
|
|
| Estimated future annual amortization expense of intangible assets, 2018 |
2.8
|
|
|
| Estimated future annual amortization expense of intangible assets, 2019 |
2.4
|
|
|
| Estimated future annual amortization expense of intangible assets, 2020 |
$ 2.0
|
|
|
| Customer Relationships [Member] |
|
|
|
| Finite-Lived Intangible Assets [Line Items] |
|
|
|
| Intangible assets acquired |
|
18.2
|
|
| Customer Relationships [Member] | Predecessor [Member] |
|
|
|
| Finite-Lived Intangible Assets [Line Items] |
|
|
|
| Intangible assets acquired |
|
|
$ 0.5
|
| Other [Member] |
|
|
|
| Finite-Lived Intangible Assets [Line Items] |
|
|
|
| Intangible assets acquired |
|
$ 1.0
|
|