Employee Benefit Plans (Schedule of RSU Activity) (Details) - Restricted Stock Units (RSUs) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($) $ / shares shares
Number of Shares
Beginning balance (in shares) | shares	1,587
Granted (in shares) | shares	712
Vested (in shares) | shares	(629)
Cancelled (in shares) | shares	(86)
Ending balance (in shares) | shares	1,584
Weighted Average Grant Date Fair Value Per Share
Beginning Balance (in dollars per share) | $ / shares	$ 33.95
Granted (in dollars per share) | $ / shares	25.29
Vested (in dollars per share) | $ / shares	32.44
Cancelled (in dollars per share) | $ / shares	34.03
Ending Balance (in dollars per share) | $ / shares	$ 30.66
Weighted Average Remaining Contractual Term	1 year 3 months 25 days
Average Intrinsic Value | $	$ 64,347