Employee Benefits and Incentive Plans - Additional Information (Detail) - USD ($)		12 Months Ended
	Jan. 28, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock issued		26,483
Fair value of common stock issued		$ 600,000
Common stock, shares authorized		475,000	475,000
Shares issued from the Employee Stock Purchase Plan		389,158	286,141	271,255
Common stock, shares issued		86,357	85,459
Compensation expense		$ 25,400,000	$ 22,900,000	$ 15,600,000
Net income effect of share-based compensation expense		$ 15,700,000	14,700,000	10,100,000
2006 EIP and 2013 LTIP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock issued		666,733
Unrecorded and unrecognized compensation expense related to unvested share based compensation stock options		$ 500,000	2,700,000
Unrecorded and unrecognized compensation expense related to unvested share based compensation on restricted stock, Recognition period		10 months 24 days
2013 LTIP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecorded and unrecognized compensation expense related to unvested share based compensation on restricted stock, Recognition period		2 years 2 months 12 days
Unrecorded and unrecognized compensation expense related to unvested share based compensation on restricted stock		$ 35,400,000	42,100,000
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based payment award vesting period		4 years
Vesting Award [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights, percentage		25.00%
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based payment award vesting period		3 years 2 months 12 days
Shares issued		425,750
Fair value of restricted stock		$ 9,600,000
Awards vested		449,824
Awards outstanding		366,695
Shares withheld in settlement of related payroll taxes		83,129
Performance-Based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based payment award vesting period		2 years 2 months 12 days
Shares issued		214,500
Fair value at the date of grant		$ 4,800,000
Performance-Based Restricted Stock Units [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Contingent right to receive common stock shares		0
Performance-Based Restricted Stock Units [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Contingent right to receive common stock shares		1.75
Stock Compensation Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares authorized					1,000,000
Percentage of annual compensation designated by employees					50.00%
Common stock, additional shares authorized	1,000,000
Maximum shares purchasable per person					2,000
Percentage of shares purchase price to market closing price					85.00%
Maximum voting power					5.00%
Maximum stock purchased to fair market value					$ 25,000
Shares issued from the Employee Stock Purchase Plan		389,158
Common stock, shares issued		946,554
Compensation expense		$ 1,200,000	$ 1,200,000	$ 1,100,000
Non-employee Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based payment award vesting period		1 year
Non-employee Directors [Member] | Initial Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based payment award vesting period		6 months