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Note 2 - Revenue Recognition (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block]

		2019				2020				2021
License and related revenues		$	12,567			$	3,948			$	1,500

Disaggregation of Revenue [Table Text Block]

		Year ended December 3 1 , 2018 (audited)
		Licensing and related revenues				Royalties				Total
Primary geographical markets
United States		$	6,260			$	2,094			$	8,354
Europe and Middle East			3,672				13,698				17,370
Asia Pacific			30,514				21,639				52,153
Total		$	40,446			$	37,431			$	77,877
Major product/service lines
DSP products (DSP cores and platforms)		$	25,369			$	34,097			$	59,466
Connectivity products (Bluetooth, Wi-Fi and SATA/SAS)			15,077				3,334				18,411
Total		$	40,446			$	37,431			$	77,877
Timing of revenue recognition
Products transferred at a point in time		$	30,744			$	37,431			$	68,175
Products and services transferred over time			9,702				—				9,702
Total		$	40,446			$	37,431			$	77,877

Contract with Customer, Asset and Liability [Table Text Block]

		December 3 1 , 2018
Trade receivables		$	9,971
Unbilled receivables (associated with licensing and other)			6,745
Unbilled receivables (associated with royalties)			9,440
Deferred revenues (short-term contract liabilities)			3,593

Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block]

		Year ended December 3 1 , 2018
		As reported				Balance without adopting ASC 606				Effect of change higher/(lower)
Revenues:
Licensing and related revenue		$	40,446			$	35,873			$	4,573
Royalties			37,431				37,926				(495	)
Total revenues			77,877				73,799				4,078
Cost of revenues			7,951				7,951				—
Gross profit			69,926				65,848				4,078
Operating expenses:
Sales and marketing			12,161				12,139				22
Other operating expenses			59,010				59,010				—
Total operating expenses			71,171				71,149				22
Operating loss			(1,245	)			(5,301	)			4,056
Financial income, net			3,418				3,418				—
Revaluation of investment in other company			(870	)			(870	)			—
Income (loss) before taxes on income			1,303				(2,753	)			4,056
Income taxes			729				356				373
Net income (loss)		$	574			$	(3,109	)		$	3,683
Basic net income (loss) per share		$	0.03			$	(0.14	)		$	0.17
Diluted net income (loss) per share		$	0.03			$	(0.14	)		$	0.16

		December 3 1 , 2018
		As reported				Balance without adopting ASC 606				Effect of change higher/(lower)
Assets:
Trade receivables		$	26,156			$	12,875			$	13,281
Prepaid expenses and other current assets		$	5,264			$	6,307			$	(1,043	)
Stockholders' equity:
Retained earnings		$	62,853			$	50,615			$	12,238

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