Operations and Summary of Significant Accounting Policies - Estimated Economic Life of Acquired Amortizable Intangible Assets (Detail) |
12 Months Ended |
---|---|
Dec. 31, 2016 | |
Minimum [Member] | Customer Relationships [Member] | |
Acquired Finite-Lived Intangible Assets [Line Items] | |
Useful Life | 2 years |
Minimum [Member] | Tradenames and Restrictive Covenant Agreements [Member] | |
Acquired Finite-Lived Intangible Assets [Line Items] | |
Useful Life | 9 months |
Maximum [Member] | Customer Relationships [Member] | |
Acquired Finite-Lived Intangible Assets [Line Items] | |
Useful Life | 11 years |
Maximum [Member] | Tradenames and Restrictive Covenant Agreements [Member] | |
Acquired Finite-Lived Intangible Assets [Line Items] | |
Useful Life | 3 years |