Business Segment Information - Reconciliation of Operating Loss and Total Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Reconciliation of Operating Loss As Reported:
Profits (loss)	$ (43,866)	$ (21,860)
Impairment of goodwill	19,222	0
General and administrative expense	24,065	25,390
Depreciation and amortization	29,404	30,543
Other income (expenses), net	(24,677)	(11,150)
Pre-tax loss	(68,543)	(33,010)
Reconciliation of Total Assets As Reported:
Total assets	190,265	256,385
Reportable Segments
Reconciliation of Operating Loss As Reported:
Profits (loss)	28,825	34,073
Reconciliation of Total Assets As Reported:
Total assets	180,411	243,199
Parent
Reconciliation of Total Assets As Reported:
Total assets	$ 9,854	$ 13,186