Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss)	$ (1,358,000)	$ (19,297,000)
Other Comprehensive Income (Loss)	17,939,000	(287,000)	$ 14,328,000
Significant Amount Reclassified Out of AOCI	0
Foreign Currency Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss)	174,000	(16,642,000)	(19,441,000)
Other Comprehensive Loss Before Reclassifications	2,451,000	2,799,000
Tax Effects	0	0
Other Comprehensive Income (Loss)	16,816,000	2,799,000
Significant Amount Reclassified Out of AOCI	14,365,000
Other [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss)	(1,532,000)	(2,655,000)	431,000
Other Comprehensive Loss Before Reclassifications	1,131,000	(3,728,000)
Tax Effects	(8,000)	642,000
Other Comprehensive Income (Loss)	1,123,000	(3,086,000)
Significant Amount Reclassified Out of AOCI	0
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss)	(1,358,000)	(19,297,000)	(19,010,000)
Other Comprehensive Loss Before Reclassifications	3,582,000	(929,000)
Tax Effects	(8,000)	642,000
Other Comprehensive Income (Loss)	17,939,000	$ (287,000)	$ 14,328,000
Significant Amount Reclassified Out of AOCI	$ 14,365,000