Retirement Benefits (Details) |
3 Months Ended |
|---|---|
|
Mar. 31, 2019
USD ($)
| |
| Retirement Benefits | |
| Expected long-term rate of return on plan assets | 1.50% |
| Service Cost | $ 50,000 |
| Interest Cost | 2,000 |
| Expected Return on Plan Assets | (2,000) |
| Amortization of initial net obligation (asset) | 7,000 |
| Amortization of net (gain) loss | 2,000 |
| Net periodic benefit cost | 59,000 |
| Contributions by employer | 172,000 |
| Expected future employer contributions, remainder of 2019 | $ 60,000 |