Note 2 - Revenue Recognition (Tables)

6 Months Ended

Jun. 30, 2018

Notes Tables

Disaggregation of Revenue [Table Text Block]

	Three Months Ended June 30,										Six Months Ended June 30,
	2018		% of Revenue			2017 (1)		% of Revenue			2018		% of Revenue			2017 (1)		% of Revenue
Consumer	$	47,809		34.2	%	$	43,917		39.1	%	$	94,953		35.3	%	$	79,528		37.4	%
Computing and storage		36,957		26.4			24,466		21.8			67,927		25.3			45,083		21.2
Automotive		20,340		14.6			12,854		11.5			38,072		14.2			25,185		11.9
Industrial		19,121		13.7			15,034		13.4			36,676		13.6			30,388		14.3
Communications		15,534		11.1			15,927		14.2			31,283		11.6			32,376		15.2
Total	$	139,761		100.0	%	$	112,198		100.0	%	$	268,911		100.0	%	$	212,560		100.0	%

Accounting Standards Update 2014-09 [Member]

Notes Tables

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

	June 30, 2018
	Topic 606
Line Item	(As Reported)		Topic 605		Difference
Assets:
Accounts receivable	$	53,460	$	55,016	$	(1,556	)
Inventories	$	128,909	$	128,938	$	(29	)
Other current assets	$	13,974	$	12,927	$	1,047
Deferred tax assets, net	$	15,791	$	15,892	$	(101	)
Total assets	$	719,952	$	720,591	$	(639	)
Liabilities and Stockholders' Equity:
Accrued liabilities	$	33,033	$	34,178	$	(1,145	)
Retained earnings	$	162,859	$	162,353	$	506
Total liabilities and stockholders' equity	$	719,952	$	720,591	$	(639	)

	Three Months Ended June 30, 2018							Six Months Ended June 30, 2018
	Topic 606							Topic 606
Line Item	(As Reported)		Topic 605		Difference			(As Reported)		Topic 605		Difference
Revenue	$	139,761	$	139,758	$	3		$	268,911	$	268,717	$	194
Cost of revenue	$	62,197	$	62,234	$	(37	)	$	119,852	$	119,818	$	34
Gross profit	$	77,564	$	77,524	$	40		$	149,059	$	148,899	$	160
Income from operations	$	24,882	$	24,842	$	40		$	46,918	$	46,758	$	160
Income before income taxes	$	27,114	$	27,074	$	40		$	49,591	$	49,431	$	160
Income tax provision	$	2,908	$	2,900	$	8		$	3,529	$	3,496	$	33
Net income	$	24,206	$	24,174	$	32		$	46,062	$	45,935	$	127
Net income per share - diluted	$	0.55	$	0.54	$	0.01		$	1.04	$	1.04	$	-

	Three Months Ended June 30, 2018						Six Months Ended June 30, 2018
	Topic 606						Topic 606
Line Item	(As Reported)		Topic 605		Difference		(As Reported)		Topic 605		Difference
Net income	$	24,206	$	24,174	$	32	$	46,062	$	45,935	$	127
Comprehensive income	$	17,459	$	17,427	$	32	$	42,544	$	42,417	$	127

	Six Months Ended June 30, 2018
	Topic 606
Line Item	(As Reported)			Topic 605			Difference
Cash flows from operating activities:
Net income	$	46,062		$	45,935		$	127
Changes in operating assets and liabilities:
Accounts receivable	$	(16,325	)	$	(16,980	)	$	655
Inventories	$	(29,602	)	$	(29,631	)	$	29
Other assets	$	(983	)	$	(27	)	$	(956	)
Accrued liabilities	$	539		$	428		$	111
Income tax liabilities	$	1,546		$	1,512		$	34