SIGNIFICANT ACCOUNTING POLICIES AND RECENT ACCOUNTING PRONOUNCEMENTS Prior Period Cash Flows Adjustments, Adoption of ASU 2014-09 (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Condensed Consolidated Cash Flows Data
NET INCOME	$ 14,099	$ 10,379
Deferred income taxes	(1,105)	(81)
Accounts receivable	8,518	2,585
Prepaid expenses and other assets	$ 8,234	1,388
Deferred income on sales to distributors		0
As Reported
Condensed Consolidated Cash Flows Data
NET INCOME		8,843
Deferred income taxes		(86)
Accounts receivable		(3,565)
Prepaid expenses and other assets		(868)
Deferred income on sales to distributors		2,001
Adjustments for Accounting Standards Update 2014-09 [Member]
Condensed Consolidated Cash Flows Data
NET INCOME		1,536
Deferred income taxes		5
Accounts receivable		980
Prepaid expenses and other assets		(520)
Deferred income on sales to distributors		$ (2,001)