Amount of loss from impairment of right-of-use asset from operating lease.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

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Restructuring Charges - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Restructuring Charges [Abstract]
Restructuring charges	$ 59	$ 127	$ 1,777	$ 2,156
Operating Lease, Impairment Loss			0	805
Restructuring reserve	1,016		1,016		$ 159
Other Restructuring [Member]
Restructuring Charges [Abstract]
Restructuring charges			1,200
Restructuring reserve	924		924		0
Employee Severance [Member]
Restructuring Charges [Abstract]
Restructuring charges			300	200
Restructuring reserve	7		7		68
Office Space Reductions [Member]
Restructuring Charges [Abstract]
Restructuring reserve	$ 85		85		$ 91
Corporate, Non-Segment [Member] \| Employee Severance [Member]
Restructuring Charges [Abstract]
Restructuring charges			$ 100	200
Middleton, Wisconsin [Member] \| Office Space Reductions [Member]
Restructuring Charges [Abstract]
Restructuring and Related Cost, Accelerated Depreciation				400
Houston, Texas [Member] \| Office Space Reductions [Member]
Restructuring Charges [Abstract]
Restructuring and Related Cost, Accelerated Depreciation				100
LakeOswegoOregon [Member] \| Office Space Reductions [Member]
Restructuring Charges [Abstract]
Operating Lease, Impairment Loss				700
Restructuring and Related Cost, Accelerated Depreciation				$ 200