|
Leases and Rentals - Additional Information (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
|---|---|---|---|
|
Dec. 31, 2014
|
Dec. 31, 2013
|
Dec. 31, 2012
|
|
| Capital Leased Assets [Line Items] | |||
| Depreciation on capital leases (less than $0.1 million in 2012) | $ 0.4 | $ 0.2 | $ 0.1 |
| Rental expense under operating leases | 9.9 | 9.7 | 9.1 |
| Machinery and equipment | |||
| Capital Leased Assets [Line Items] | |||
| Capital lease obligations incurred | $ 1.6 | ||
| Minimum | Capital Lease | |||
| Capital Leased Assets [Line Items] | |||
| Capital lease term | 24 months | ||
| Maximum | Capital Lease | |||
| Capital Leased Assets [Line Items] | |||
| Capital lease term | 60 months | ||