CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total	Common Stock	Treasury Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Total Diodes Incorporated Stockholders' Equity	Noncontrolling Interest
BALANCE at Dec. 31, 2014	$ 810,167	$ 31,729		$ 314,942	$ 490,006	$ (68,402)	$ 768,275	$ 41,892
Common stock shares beginning at Dec. 31, 2014		47,591,000
Total comprehensive income	10,499				24,274	(16,014)	8,260	2,239
Acquisition of noncontrolling interest	3,521							3,521
Common stock issued for share-based plans	10,198	$ 675		9,523			10,198
Common stock issued for share-based plans, shares		1,023,000
Net excess tax benefit from share-based compensation	(4,029)			(4,029)			(4,029)
Stock buyback	(11,009)		$ (11,009)				(11,009)
Stock buyback, shares			(466,000)
Share-based compensation	18,970			18,970			18,970
Restricted awards related to Pericom acquisition	4,680			4,680			4,680
BALANCE at Dec. 31, 2015	842,997	$ 32,404	$ (11,009)	344,086	514,280	(84,416)	795,345	47,652
Common stock shares ending at Dec. 31, 2015		48,614,000	(466,000)
Total comprehensive income	(9,773)				15,935	(28,250)	(12,315)	2,542
Dividends to noncontrolling interest	(5,746)							(5,746)
Common stock issued for share-based plans	120	$ 515		(395)			120
Common stock issued for share-based plans, shares		762,000
Net excess tax benefit from share-based compensation	(567)			(567)			(567)
Stock buyback	$ (18,014)		$ (18,014)				(18,014)
Stock buyback, shares	(691,196)		(691,000)
Share-based compensation	$ 13,978			13,978			13,978
Tax related to net share settlement	(2,528)			(2,528)			(2,528)
BALANCE at Dec. 31, 2016	$ 820,467	$ 32,919	$ (29,023)	354,574	530,215	(112,666)	776,019	44,448
Common stock shares ending at Dec. 31, 2016	48,219,376	49,376,000	(1,157,000)
Total comprehensive income	$ 29,452				(1,805)	29,186	27,381	2,071
Noncontrolling interests	476			(165)			(165)	641
Dividends to noncontrolling interest	(4,746)							(4,746)
Adoption of new accounting standard, ASU 2016-09	5,048			771	4,277		5,048
Common stock issued for share-based plans	13,606	$ 808		12,798			13,606
Common stock issued for share-based plans, shares		1,211,000
Stock buyback	$ (8,745)		$ (8,745)				(8,745)
Stock buyback, shares	(300,000)		(300,000)
Share-based compensation	$ 18,638			18,638			18,638
Tax related to net share settlement	(278)			(278)			(278)
BALANCE at Dec. 31, 2017	$ 873,918	$ 33,727	$ (37,768)	$ 386,338	$ 532,687	$ (83,480)	$ 831,504	$ 42,414
Common stock shares ending at Dec. 31, 2017	49,130,090	50,587,000	(1,457,000)