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	58,060				68,000	(10,379)	57,621	439
Noncontrolling interests	3,343							3,343
Dividends to noncontrolling interest	(2,568)							(2,568)
Common stock issued for share-based plans	6,705	$ 349		6,356			6,705
Common stock issued for share-based plans, shares		524,000
Share-based compensation	9,775			9,775			9,775
Tax related to net share settlement	(1,595)			(1,595)			(1,595)
BALANCE at Jun. 30, 2019	1,051,152	$ 34,803	$ (37,768)	414,451	704,708	(112,225)	1,003,969	47,183
Common stock shares ending at Jun. 30, 2019		52,202,000	(1,457,000)
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 beginning at Mar. 31, 2019		52,054,000	(1,457,000)
Total comprehensive income	31,326				36,284	(5,377)	30,907	419
Common stock issued for share-based plans	626	$ 99		(61)			38	588
Common stock issued for share-based plans, shares		148,000
Share-based compensation	2,852			5,299			5,299	(2,447)
Tax related to net share settlement	(950)			(950)			(950)
BALANCE at Jun. 30, 2019	1,051,152	$ 34,803	$ (37,768)	414,451	704,708	(112,225)	1,003,969	47,183
Common stock shares ending at Jun. 30, 2019		52,202,000	(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	$ 31,435				41,201	(10,353)	30,848	587
Acquisition of non-controlling interest	(6,153)			(1,225)			(1,225)	(4,928)
Contributions from noncontrolling interests	11,776							11,776
Dividends to noncontrolling interest	(1,553)							(1,552)
Common stock issued for share-based plans	1,065	$ 278		787			1,065
Common stock issued for share-based plans, shares		418,000
Share-based compensation	11,678			11,678			11,678
Deferred compensation plan			$ (892)	892
Deferred compensation plan, shares			(26,000)
Tax related to net share settlement	(5,405)			(5,405)			(5,405)
BALANCE at Jun. 30, 2020	$ 1,195,627	$ 35,389	$ (38,660)	433,989	831,159	(118,492)	1,143,385	52,242
Common stock shares ending at Jun. 30, 2020	51,598,528	53,082,000	(1,483,000)
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 beginning at Mar. 31, 2020		52,932,000	(1,481,000)
Total comprehensive income	12,368				21,033	(9,020)	12,013	355
Acquisition of non-controlling interest	(6,153)			(1,225)			(1,225)	(4,928)
Contributions from noncontrolling interests	999							999
Dividends to noncontrolling interest	(1,445)							(1,444)
Common stock issued for share-based plans	1,065	$ 100		965			1,065
Common stock issued for share-based plans, shares		150,000
Share-based compensation	7,441			7,441			7,441
Deferred compensation plan			$ (203)	203
Deferred compensation plan, shares			(2,000)
Tax related to net share settlement	(938)			(938)			(938)
BALANCE at Jun. 30, 2020	$ 1,195,627	$ 35,389	$ (38,660)	$ 433,989	$ 831,159	$ (118,492)	$ 1,143,385	$ 52,242
Common stock shares ending at Jun. 30, 2020	51,598,528	53,082,000	(1,483,000)