Asset Impairment Charges - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Asset Impairment Charges [Line Items]
Non-cash charges recorded to earnings	$ 1,203	$ 22	$ 293	$ 26	$ 256	$ 188	$ 1,751	$ 195	$ 1,544	$ 2,390	$ 11,454
Wrote-off certain deferred costs									300
MyWay [Member]
Asset Impairment Charges [Line Items]
Non-cash charges recorded to earnings										800	5,000
Capitalized Software Development Projects [Member]
Asset Impairment Charges [Line Items]
Non-cash charges recorded to earnings										$ 1,600
Commercial Agreement[Member]
Asset Impairment Charges [Line Items]
Non-cash charges recorded to earnings									$ 1,200
dbMotion [Member]
Asset Impairment Charges [Line Items]
Non-cash charges recorded to earnings											$ 6,500