Property and Equipment - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Property, Plant and Equipment [Line Items]
Depreciation and amortization	$ 5,515,000	$ 1,796,000
Capitalized developed software costs	400,000	700,000
Developed software costs amortization expense	700,000	500,000
Property And Equipment Excluding Developed Software
Property, Plant and Equipment [Line Items]
Depreciation and amortization	$ 1,300,000	$ 800,000