Goodwill (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Sep. 30, 2019 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Highest goodwill balance among other reporting units			$ 5,700
Average goodwill balance among other reporting units			$ 800
Number of reporting units with allocated goodwill balances			223
Goodwill [Roll Forward]
Balance, beginning of period	$ 198,351	$ 199,314
Acquired goodwill		334
Goodwill, Translation Adjustments	124	(1,297)
Balance, end of period	198,475	198,351
Accumulated goodwill impairment losses	(9,879)	(9,879)
Goodwill impairment	0	0
Accumulated goodwill impairment losses	(9,879)	(9,879)
Goodwill	$ 188,596	$ 188,472