Commitments and Contingencies - Additional Information (Detail)	3 Months Ended		6 Months Ended				6 Months Ended			3 Months Ended
	Jun. 30, 2013 USD ($)	Jun. 30, 2012 USD ($)	Jun. 30, 2013 USD ($)	Jun. 30, 2012 USD ($)	Nov. 30, 2012 Patents	Nov. 21, 2012 Patents	Jun. 30, 2013 Minimum [Member] Capital Additions [Member] USD ($)	Jun. 30, 2013 Maximum [Member] Capital Additions [Member] USD ($)	Jun. 30, 2013 Massachusetts [Member] USD ($)	Jun. 30, 2013 Ireland [Member] USD ($)	Jun. 30, 2013 Ireland [Member] EUR (€)
Commitments And Guarantees [Line Items]
Minimum lease payments	$ 64,292,000		$ 64,292,000						$ 41,300,000
Excess cost									5,300,000
Cash paid for improvements									4,000,000
Lease agreement security deposit									3,300,000	243,000	187,000
Bank deposit									3,500,000
Bank deposit percentage									105.00%
Number of times lease may be extended									2
Additional lease term									5 years
Annual lease payments	1,588,000	797,000	2,652,000	1,555,000						159,000	122,000
Hosting fees incurred	1,253,000	632,000	2,328,000	1,386,000
Asset purchase commitment							$ 7,000,000	$ 12,000,000
Number of patents involved in infringement lawsuit					3	3