Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss)		$ (4,652)	$ (1,358)
Cumulative Effect of Accounting Changes		0
Other Comprehensive Income (Loss)		(3,561)	17,939	$ (287)
Foreign Currency Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss)		(2,709)	174	(16,642)
Cumulative Effect of Accounting Changes		0
Other Comprehensive Loss Before Reclassifications		(2,883)	2,451
Tax Effects		0	0
Other Comprehensive Income (Loss)		(2,883)	16,816
Significant Amount Reclassified Out of AOCI	[1]		14,365
Other [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss)		(1,943)	(1,532)	(2,655)
Cumulative Effect of Accounting Changes		267
Other Comprehensive Loss Before Reclassifications		(533)	1,131
Tax Effects		(145)	(8)
Other Comprehensive Income (Loss)		(678)	1,123
Significant Amount Reclassified Out of AOCI	[1]		0
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss)		(4,652)	(1,358)	(19,297)
Cumulative Effect of Accounting Changes		267
Other Comprehensive Loss Before Reclassifications		(3,416)	3,582
Tax Effects		(145)	(8)
Other Comprehensive Income (Loss)		$ (3,561)	17,939	$ (287)
Significant Amount Reclassified Out of AOCI	[1]		$ 14,365

[1] Reclassified to Net Income - Gains (Losses) on Asset Dispositions, Net. See Note 17.