SHARE INCENTIVE PLANS (Share-Based Compensation Expense) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Share-based compensation expense
Allocated share-based compensation expense	$ 26,949	$ 14,916	$ 51,191	$ 29,890
Total unrecognized share-based compensation costs related to non-vested awards	263,400		$ 263,400
Weighted average period for recognition of unrecognized share-based compensation costs (in years)			3 years 1 month 20 days
Cost of goods sold
Share-based compensation expense
Allocated share-based compensation expense	829	415	$ 1,513	826
Research and development
Share-based compensation expense
Allocated share-based compensation expense	14,486	8,340	27,727	16,514
Sales and marketing
Share-based compensation expense
Allocated share-based compensation expense	6,504	3,646	12,156	7,245
General and administrative
Share-based compensation expense
Allocated share-based compensation expense	$ 5,130	$ 2,515	$ 9,795	$ 5,305

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5047-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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