Goodwill and Intangible Assets - Schedule of Carrying Amount of Goodwill by Reporting Unit and Impairment Recognized (Detail) $ in Thousands	6 Months Ended
	Jun. 30, 2017 USD ($)
Goodwill [Line Items]
Goodwill, balance as of December 31, 2016	$ 297,906
Impairment	(198,828)
Currency translation adjustments	401
Goodwill, balance as of June 30, 2017	99,479
Office & Facilities [Member]
Goodwill [Line Items]
Goodwill, balance as of December 31, 2016	224,683
Impairment	(185,704)
Goodwill, balance as of June 30, 2017	38,979
Industrial [Member]
Goodwill [Line Items]
Goodwill, balance as of December 31, 2016	13,067
Currency translation adjustments	46
Goodwill, balance as of June 30, 2017	13,113
Automotive [Member]
Goodwill [Line Items]
Goodwill, balance as of December 31, 2016	45,234
Impairment	(12,220)
Currency translation adjustments	355
Goodwill, balance as of June 30, 2017	33,369
CPO [Member]
Goodwill [Line Items]
Goodwill, balance as of December 31, 2016	14,922
Impairment	(904)
Goodwill, balance as of June 30, 2017	$ 14,018