Geographic Information (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016
Total revenues by geographic area
Revenues	$ 147,287	$ 192,638
United States
Total revenues by geographic area
Revenues	91,987	123,819
Australia
Total revenues by geographic area
Revenues	18	6
Ireland
Total revenues by geographic area
Revenues	28,251	43,127
Singapore
Total revenues by geographic area
Revenues	27,006	25,554
China
Total revenues by geographic area
Revenues	$ 25	$ 132

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

Name:	us-gaap_Revenues
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration