Share-Based Compensation - Summary of Restricted Stock Units and Restricted Stock (Details) - Restricted stock and restricted stock units	6 Months Ended
	Jun. 30, 2020 $ / shares shares
Number
Beginning balance (in shares) | shares	362,000
Granted (in shares) | shares	307,000
Vested (in shares) | shares	(93,000)
Forfeited (in shares) | shares	(10,000)
Ending balance (in shares) | shares	566,000
Weighted Average Grant Date Fair Value
Beginning balance (in dollars per share) | $ / shares	$ 43.24
Granted (in dollars per share) | $ / shares	24.43
Vested (in dollars per share) | $ / shares	42.30
Forfeited (in dollars per share) | $ / shares	32.69
Ending balance (in dollars per share) | $ / shares	$ 33.37