Employee Share Plans - Schedule of Restricted Stock Award Activity (Details) - Restricted Stock Units and Awards shares in Thousands	12 Months Ended
	Dec. 31, 2020 $ / shares shares
Number of Shares
Non-vested beginning balance (in shares) | shares	577
Granted (in shares) | shares	178
Vested (in shares) | shares	(276)
Forfeited (in shares) | shares	(18)
Non-vested ending balance (in shares) | shares	461
Weighted Average Grant Date Fair Value
Non-vested beginning balance (in dollars per share) | $ / shares	$ 17.87
Granted (in dollars per share) | $ / shares	24.48
Vested (in dollars per share) | $ / shares	16.74
Forfeited (in dollars per share) | $ / shares	19.56
Non-vested ending balance (in dollars per share) | $ / shares	$ 21.03