Benefit Plans - Components of Company Plan Benefit Expense (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Change in Projected Benefit Obligation
Projected benefit obligation, beginning of period	$ 37,551	$ 32,474	$ 32,474
Service cost	313	250	998
Interest cost	326	348	1,393
Actuarial gain	0		3,449
Other reclassification	(8,925)		0
Benefits paid	(188)		(763)
Projected benefit obligation, end of period	29,077		37,551
Change in Plan Assets
Plan assets at fair value, beginning of period	0	$ 0	0
Company contributions	188		763
Benefits paid	(188)		(763)
Plan assets at fair value, end of period	0		0
Unfunded Status of the Plan	$ 29,077		$ 37,551