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Employee benefit plans (Tables)

12 Months Ended

Dec. 31, 2020

Share-based Payment Arrangement [Abstract]

schedule of share-based compensation, Performance Stock Units Award Activity [Table Text Block]

A summary of the Company’s PSU activity is as follows:

			Shares (in thousands)						Weighted-average grant date fair value
Non-vested shares at December 31, 2019			788						$	7.51
Granted			1,231						4.05
Vested			(247)						7.50
Forfeited			(453)						6.92
Non-vested shares at December 31, 2020			1,319						$	4.48

Schedule of Share-based Compensation, Stock Options, Activity

A summary of the Company’s stock option activity is as follows:

			Shares (in thousands)						Weighted-average exercise price						Weighted-average remaining contractual term (in years)						Aggregate intrinsic value (in thousands)
Outstanding at December 31, 2019			3,963						$	10.16					6.35						$	374
Granted			1,025						4.01
Exercised			(357)						5.50
Forfeited/Cancelled			(1,200)						10.20
Outstanding at December 31, 2020			3,431						$	8.79					6.50						$	6,259
Vested and expected to vest at December 31, 2020			3,431						$	8.79					6.50						$	6,259
Exercisable at December 31, 2020			2,195						$	11.06					5.18						$	1,893

Schedule of Share-based Compensation, Restricted Stock Units Award Activity

A summary of the Company’s RSU activity is as follows:

			Shares (in thousands)						Weighted-average grant date fair value
Non-vested shares at December 31, 2019			8,225						$	6.11
Granted			8,759						4.59
Vested			(3,962)						6.04
Forfeited			(2,383)						5.40
Non-vested shares at December 31, 2020			10,639						$	5.04

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Tabular disclosure of the changes in outstanding nonvested performance-based units.

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-Publisher FASB
-Name Accounting Standards Codification
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Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year.

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Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

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