Schedule II - Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2019

Notes to Financial Statements

SEC Schedule, 12-09, Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]

SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS 

Tax-related valuation allowance	Balance at the beginning of period		Charged to tax expense/(benefit)		Purchase accounting adjustments		Impact of foreign currency exchange rate		Balance at the end of period
Year ended December 31, 2019	$	40,857	$	50	$	65	$	32	$	41,004
Year ended December 31, 2018	$	33,774	$	6,814	$	269	$	—	$	40,857
Year ended December 31, 2017	$	28,211	$	5,557	$	—	$	6	$	33,774