CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total	LSC Acquisition	Common Stock	Treasury Stock	Treasury Stock LSC Acquisition	Treasury Stock Deferred Compensation Plan	Additional Paid-in Capital	Additional Paid-in Capital Deferred Compensation Plan	Retained Earnings	Accumulated Other Comprehensive Loss	Total Diodes Incorporated Stockholders' Equity	Total Diodes Incorporated Stockholders' Equity LSC Acquisition	Noncontrolling Interest
BALANCE at Dec. 31, 2017	$ 873,918		$ 33,727	$ (37,768)			$ 386,338		$ 532,687	$ (83,480)	$ 831,504		$ 42,414
Common stock shares beginning at Dec. 31, 2017			50,587,000	(1,457,000)
Total comprehensive income	87,040								104,021	(18,366)	85,655		1,385
Contributions from noncontrolling interests	4,902												4,902
Dividends to noncontrolling interest	(2,732)												(2,732)
Common stock issued for share-based plans	4,861		$ 727				4,134				4,861
Common stock issued for share-based plans, shares			1,091,000
Share-based compensation	20,736						20,736				20,736
Tax related to net share settlement	(11,293)						(11,293)				(11,293)
BALANCE at Dec. 31, 2018	977,432		$ 34,454	$ (37,768)			399,915		636,708	(101,846)	931,463		45,969
Common stock shares ending at Dec. 31, 2018			51,678,000	(1,457,000)
Total comprehensive income	147,822								153,250	(6,293)	146,957		865
Contributions from noncontrolling interests	3,343												3,343
Dividends to noncontrolling interest	(3,818)												(3,818)
Common stock issued for share-based plans	11,901		$ 657				11,244				11,901
Common stock issued for share-based plans, shares			986,000
Share-based compensation	20,535						20,535				20,535
Tax related to net share settlement	(4,432)						(4,432)				(4,432)
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 ending at Dec. 31, 2019	51,206,969		52,664,000	(1,457,000)
Total comprehensive income	$ 133,762								98,088	34,533	132,621		1,141
Acquisition of noncontrolling interest in Yea Shin	(6,155)						(1,225)				(1,225)		(4,930)
Contributions from noncontrolling interests	11,832												11,832
Dividends to noncontrolling interest	(2,099)												(2,099)
Common stock issued for share-based plans	6,830		$ 581				6,249				6,830
Common stock issued for share-based plans, shares			872,000
Share-based compensation	24,177						24,177				24,177
Tax related to net share settlement	(8,302)						(8,302)				(8,302)
Stock buyback		$ (296,705)			$ (296,705)	$ (1,437)		$ 1,437				$ (296,705)
Stock buyback, shares					(7,766,000)	(37,000)
BALANCE at Dec. 31, 2020	$ 1,016,123		$ 35,692	$ (335,910)			$ 449,598		$ 888,046	$ (73,606)	$ 963,820		$ 52,303
Common stock shares ending at Dec. 31, 2020	44,276,194		53,536,000	(9,260,000)