Shared-Based Compensation - Reconciliation of Restricted Stock Option Activity (Detail) shares in Thousands	6 Months Ended
	Jun. 30, 2022 $ / shares shares
Restricted stock
Nonvested Shares (in thousands)
Nonvested restricted shares, beginning balance (in shares) | shares	469
Nonvested restricted shares, granted (in shares) | shares	897
Nonvested restricted shares, vested (in shares) | shares	(291)
Nonvested restricted shares, forfeited (in shares) | shares	(9)
Nonvested restricted shares, ending balance (in shares) | shares	1,066
Weighted Average Grant-Date Fair Value (per share)
Beginning balance (in dollars per share) | $ / shares	$ 7.28
Granted (in dollars per share) | $ / shares	3.31
Vested (in dollars per share) | $ / shares	7.05
Forfeited (in dollars per share) | $ / shares	4.73
Ending balance (in dollars per share) | $ / shares	$ 4.02
Performance Shares TSR Awards [Member]
Nonvested Shares (in thousands)
Nonvested restricted shares, beginning balance (in shares) | shares	194
Nonvested restricted shares, granted (in shares) | shares	382
Nonvested restricted shares, ending balance (in shares) | shares	576
Weighted Average Grant-Date Fair Value (per share)
Beginning balance (in dollars per share) | $ / shares	$ 9.59
Granted (in dollars per share) | $ / shares	2.53
Ending balance (in dollars per share) | $ / shares	$ 4.90
Performance Shares ROIC Award [Member]
Nonvested Shares (in thousands)
Nonvested restricted shares, beginning balance (in shares) | shares	228
Nonvested restricted shares, granted (in shares) | shares	408
Nonvested restricted shares, ending balance (in shares) | shares	636
Weighted Average Grant-Date Fair Value (per share)
Beginning balance (in dollars per share) | $ / shares	$ 8.14
Granted (in dollars per share) | $ / shares	2.62
Ending balance (in dollars per share) | $ / shares	$ 4.60