Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Current assets:
Cash	$ 137,171		$ 100,087
Restricted cash	64		64
Accounts receivable, net of allowances of $1,395 and $887 at December 31, 2013 and 2012, respectively	20,240		8,871
Deferred tax assets	6,505		8,402
Prepaid expenses and other current assets	13,675		10,371
Total current assets	177,655		127,795
Property and equipment, net	61,732	[1]	41,132	[1]
Goodwill	28,706		24,879
Intangible assets, net	7,765		7,013
Deferred tax assets, net	1,282		1,084
Other assets	9,399		8,722
Total assets	286,539		210,625
Current liabilities:
Accounts payable	9,952		9,115
Accrued expenses and other current liabilities	14,855		11,764
Deferred revenue	21,163		17,087
Current portion of long-term debt			1,250
Total current liabilities	45,970		39,216
Deferred revenue	9,029		8,931
Accrued income taxes	2,094		14,559
Long-term debt, net of discount of $556 at December 31, 2012	23,750		22,881
Other liabilities	3,888		4,016
Total liabilities	84,731		89,603
Commitments and contingencies (Note 18)
Shareholders' equity:
Additional paid-in capital	277,084		227,990
Accumulated other comprehensive income	1,812		626
Accumulated deficit	(77,826)		(108,283)
Total shareholders' equity	201,808		121,022
Total liabilities and shareholders' equity	286,539		210,625
Ordinary Shares
Shareholders' equity:
Common shares, value	709		660
Deferred Shares
Shareholders' equity:
Common shares, value	$ 29		$ 29

[1] Long-lived tangible assets consist of property and equipment based on the country in which the assets are located and are reported at carrying value.