Employee Benefit Plans - Reclassifications from Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Retirement Benefits [Abstract]
Amortization of actuarial loss - total before tax	$ 885
Tax benefit	(209)	$ (173)	$ (302)
Net of tax	$ 676	$ 570	$ 508

Amount, before tax, of reclassification adjustment from accumulated other comprehensive (income) loss for prior service cost (credit) of defined benefit plan.

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-Publisher FASB
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration