Regulatory Matters (Tables)

9 Months Ended

Sep. 30, 2018

Regulatory Capital Requirements [Abstract]

Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations

The actual capital amounts and ratios for the Company and TBK Bank as of September 30, 2018 and December 31, 2017 are presented in the following table.

								To Be Well
								Capitalized Under
				Minimum for Capital				Prompt Corrective
(Dollars in thousands)	Actual			Adequacy Purposes				Action Provisions
As of September 30, 2018	Amount		Ratio	Amount		Ratio		Amount		Ratio
Total capital (to risk weighted assets)
Triumph Bancorp, Inc.	$	529,965	13.0%	$	324,920		8.0%	N/A		N/A
TBK Bank, SSB	$	471,802	12.0%	$	314,844		8.0%	$	393,555		10.0%

Tier 1 capital (to risk weighted assets)
Triumph Bancorp, Inc.	$	453,295	11.2%	$	243,690		6.0%	N/A		N/A
TBK Bank, SSB	$	444,126	11.3%	$	236,133		6.0%	$	314,843		8.0%

Common equity Tier 1 capital (to risk weighted assets)
Triumph Bancorp, Inc.	$	404,671	10.0%	$	182,767		4.5%	N/A		N/A
TBK Bank, SSB	$	444,126	11.3%	$	177,099		4.5%	$	255,810		6.5%

Tier 1 capital (to average assets)
Triumph Bancorp, Inc.	$	453,295	11.7%	$	154,333		4.0%	N/A		N/A
TBK Bank, SSB	$	444,126	11.7%	$	152,037		4.0%	$	190,046		5.0%

As of December 31, 2017
Total capital (to risk weighted assets)
Triumph Bancorp, Inc.	$	436,036	13.2%	$	264,026		8.0%	N/A		N/A
TBK Bank, SSB	$	361,068	11.4%	$	254,139		8.0%	$	317,674		10.0%

Tier 1 capital (to risk weighted assets)
Triumph Bancorp, Inc.	$	367,958	11.1%	$	198,019		6.0%	N/A		N/A
TBK Bank, SSB	$	341,910	10.8%	$	190,603		6.0%	$	254,137		8.0%

Common equity Tier 1 capital (to risk weighted assets)
Triumph Bancorp, Inc.	$	320,265	9.7%	$	148,514		4.5%	N/A		N/A
TBK Bank, SSB	$	341,910	10.8%	$	142,952		4.5%	$	206,486		6.5%

Tier 1 capital (to average assets)
Triumph Bancorp, Inc.	$	367,958	11.8%	$	124,754		4.0%	N/A		N/A
TBK Bank, SSB	$	341,910	11.1%	$	123,088		4.0%	$	153,860		5.0%