Pension and Post-Retirement Benefits - Amounts in Accumulated Other Comprehensive Income Expected to be Recognized as Components of Net Periodic Benefit Cost (Details) $ in Thousands	Dec. 31, 2019 USD ($)
Pension Plans, Postretirement and Other Employee Benefits
Net actuarial loss	$ 2,532
Prior service cost	534
Total	3,066
Pension Benefits
Pension Plans, Postretirement and Other Employee Benefits
Net actuarial loss	2,532
Prior service cost	534
Total	3,066
Post-retirement Benefits
Pension Plans, Postretirement and Other Employee Benefits
Net actuarial loss	0
Prior service cost	0
Total	$ 0