Shareholders' Equity - Schedule of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Beginning balance	$ (19,400)
Net current period other comprehensive income (loss)	20,300	$ 2,300
Ending balance	5,700	(19,400)
Defined Benefit Plans [Member]
Beginning balance	(20,700)
Amounts reclassified from accumulated other comprehensive loss, net of tax	100
Net current period other comprehensive income (loss)	100
Ending balance	(20,600)	(20,700)
Accumulated Other Comprehensive Loss [Member]
Beginning balance	(20,700)
Amounts reclassified from accumulated other comprehensive loss, net of tax	100
Net current period other comprehensive income (loss)	100
Ending balance	$ (20,600)	$ (20,700)