Retirement Plans - Schedule of Accumulated Other Comprehensive Loss Expected to Recognized as Components of Net Periodic Benefit Costs (Details) - Pension Plan $ in Millions |
12 Months Ended |
|---|---|
|
Dec. 31, 2016
USD ($)
| |
| Amortization of: | |
| Net actuarial loss | $ 2.1 |
| Total | $ 2.1 |