|
Commitments and Contingencies - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified |
Mar. 31, 2015
|
Dec. 31, 2014
|
|---|---|---|
| Loss Contingencies [Line Items] | ||
| Accrual for the probable payment of pending claims | $ 16,700 | |
| Fair Value, Inputs, Level 3 | ||
| Loss Contingencies [Line Items] | ||
| Fair value of contingent purchase price commitments | $ 29,150 | $ 27,908 |