Share-based Compensation - Additional Information (Detail) - USD ($)	1 Months Ended		12 Months Ended
	Sep. 30, 2020	Aug. 31, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2015	Jun. 29, 2004
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Options outstanding			1,397,054	1,491,019
Options exercisable			944,630
Income tax benefit related to expense			$ 3,100,000	$ 3,200,000	$ 3,500,000
Exercised stock option amount			3,300,000
Realized tax benefit amount			$ 600,000
Closing stock price			$ 31.09
Non-vested shares, vested in period				0.0	0.0	$ 2,700,000
Share-based compensation			$ 15,432,000	16,207,000	21,540,000
General and administrative [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation			10,289,000	10,624,000	16,872,000
Transition and Retirement Agreement [Member] | General and administrative [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share-based compensation			$ 0	0	$ 6,500,000
Global Spine [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Options outstanding			50,711
Options exercisable			25,355
Share based compensation grants of restricted stock unit		14,743
Global Spine [Member] | Maximum [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Common stock acqure under stock option		50,711
Global Extremities [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Options outstanding			32,945
Options exercisable			8,236
Share based compensation grants of restricted stock unit	10,624
Global Extremities [Member] | Maximum [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Common stock acqure under stock option	32,945
2012 LTIP Plan [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Award Contractual term			10 years
Amount of shares reserved for issuance			7,050,000
Options outstanding			1,150,898
Options exercisable			748,539
2004 LTIP [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Amount of shares reserved for issuance								3,100,000
Spinal Kinetics Inducement Plan [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Options outstanding			0
Number of shares reserved for employees					51,705
Stock Purchase Plan [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Amount of shares reserved for issuance			2,850,000
Maximum percentage of compensation eligible employees to be deducted for purchase of common stock			25.00%
Purchase price of shares equivalent to fair market value			85.00%
Shares issued under stock purchase plan			2,172,134
Stock Purchase Plan [Member] | Minimum [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Percentage of compensation eligible employees to be deducted for purchase of common stock			1.00%
Restricted Stock [Member] | 2012 LTIP Plan [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Unvested restricted stock and stock units outstanding			13,978
Restricted Stock [Member] | Spinal Kinetics Inducement Plan [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Unvested restricted stock and stock units outstanding			1,284
Restricted Stock Units [Member] | Global Spine [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Unvested restricted stock and stock units outstanding			7,372
Restricted Stock Units [Member] | Global Extremities [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Unvested restricted stock and stock units outstanding			7,968
Restricted Stock Units [Member] | 2012 LTIP Plan [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Unvested restricted stock and stock units outstanding			851,847
Market-based Restricted Stock Units [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share based compensation grants of restricted stock unit			152,575
Unamortized compensation expense			$ 8,300,000
Weighted-average period for unamortized compensation cost expected to be recognized			1 year 8 months 12 days
Aggregate intrinsic value of restricted stock outstanding			$ 10,000,000.0
Share-based compensation			$ 4,414,000	3,509,000	$ 4,733,000
Common stock issued based on performance stock units			1
Percentage of performance to be achieved			100.00%
Performance period			3 years
Share based compensation, fair market value of restricted stock units vested			$ 0.0	1,400,000	0.0
Market-based Restricted Stock Units [Member] | Maximum [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Percentage of performance to be achieved			200.00%
Market-based Restricted Stock Units [Member] | Minimum [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Percentage of performance to be achieved			50.00%
Staff Share Option Plan [Member] | 2004 LTIP [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Options outstanding			12,500
Stock Option [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Unamortized compensation expense			$ 2,000,000.0
Weighted-average period for unamortized compensation cost expected to be recognized			1 year 4 months 24 days
Total intrinsic value of options exercised			$ 600,000	900,000	1,400,000
Aggregate intrinsic value of options outstanding			1,700,000
Aggregate intrinsic value of options exercisable			500,000
Share-based compensation			$ 1,893,000	2,571,000	4,054,000
Service period			4 years
Time-based Restricted Stock Awards and Stock Units [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share based compensation grants of restricted stock unit			295,240
Unamortized compensation expense			$ 15,200,000
Weighted-average period for unamortized compensation cost expected to be recognized			2 years 7 months 6 days
Vesting period			4 years
Non-vested shares, vested in period			$ 9,000,000.0	6,500,000	9,500,000
Aggregate intrinsic value of restricted stock outstanding			17,400,000
Share-based compensation			$ 7,437,000	$ 8,485,000	$ 11,084,000
Restricted Stock Unit with Deferred Delivery (DSUs) [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Vesting period			1 year
Awards vested but not settled			59,001
Performance-based Restricted Stock Awards and Stock Units [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share based compensation grants of restricted stock unit			0	0	0
Performance-based Restricted Stock Awards [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share based compensation grants of restricted stock unit							110,660
Unamortized compensation expense			$ 0
Non-vested shares, vested in period			0.0	$ 0.0	$ 3,200,000
Aggregate intrinsic value of restricted stock outstanding			0
Share-based compensation			$ 0	0
Performance-based Restricted Stock Units [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Share based compensation grants of restricted stock unit							55,330
Unamortized compensation expense				0
Aggregate intrinsic value of restricted stock outstanding				0
Share-based compensation				$ 0	$ 0	$ 0