Stockholders' Equity - Additional Information (Detail) - USD ($)		1 Months Ended	3 Months Ended
	Oct. 19, 2016	Oct. 31, 2018	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018	Oct. 01, 2018	Sep. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares authorized (in shares)			120,000,000		120,000,000	120,000,000	90,000,000
Common stock, shares issued (in shares)			64,300,000	29,100,000	64,200,000	64,200,000
Common stock, shares outstanding (in shares)			64,300,000	29,100,000	64,200,000	64,200,000
Preferred Stock, shares authorized (in shares)			10,000,000
Preferred Stock, shares issued (in shares)			0		0
Preferred Stock, shares outstanding (in shares)			0		0
Compensation expense			$ 3,500,000	$ 1,300,000
Unrecognized compensation cost			$ 30,800,000
Weighted average remaining period			3 years
Stock repurchase program, expiration period	Dec. 31, 2019
Repurchased shares of common stock			0	0
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock repurchase program, authorized amount	$ 30,000,000
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Intrinsic value of stock awards			$ 31,900,000
Restricted Stock [Member] | Automation and Specialty [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock issued		536,030
Aggregate fair value of awards		$ 21,000,000
Fair value attributed to preacquisition savings		$ 3,100,000
2014 Plan [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of common stock available for delivery pursuant to the grant of awards (in shares)			1,700,000
2014 Plan [Member] | Restricted Shares and Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares for vesting period			5 years