CONDENSED 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, 2018	$ 977,432	$ 34,454	$ (37,768)	$ 399,915	$ 636,708	$ (101,846)	$ 931,463	$ 45,969
Common stock shares beginning at Dec. 31, 2018		51,678,000	(1,457,000)
Total comprehensive income	26,734				31,716	(5,002)	26,714	20
Noncontrolling interests	2,755							2,755
Dividends to noncontrolling interest	(121)							(121)
Common stock issued for share-based plans	6,667	$ 250		6,417			6,667
Common stock issued for share-based plans, shares		376,000
Share-based compensation	4,476			4,476			4,476
Tax related to net share settlement	(645)			(645)			(645)
BALANCE at Mar. 31, 2019	1,017,298	$ 34,704	$ (37,768)	410,163	668,424	(106,848)	968,675	48,623
Common stock shares ending at Mar. 31, 2019		52,054,000	(1,457,000)
BALANCE at Dec. 31, 2019	$ 1,152,783	$ 35,111	$ (37,768)	427,262	789,958	(108,139)	1,106,424	46,359
Common stock shares beginning at Dec. 31, 2019	51,206,969	52,664,000	(1,457,000)
Total comprehensive income	$ 19,067				20,168	(1,333)	18,835	232
Contributions from noncontrolling interests	10,777							10,777
Dividends to noncontrolling interest	(108)							(108)
Common stock issued for share-based plans		$ 178		(178)
Common stock issued for share-based plans, shares		268,000
Share-based compensation	4,237			4,237			4,237
Deferred compensation plan			$ (689)	689
Deferred compensation plan, shares			(24,000)
Tax related to net share settlement	(4,467)			(4,467)			(4,467)
BALANCE at Mar. 31, 2020	$ 1,182,289	$ 35,289	$ (38,457)	$ 427,543	$ 810,126	$ (109,472)	$ 1,125,029	$ 57,260
Common stock shares ending at Mar. 31, 2020	51,450,808	52,932,000	(1,481,000)