Regulatory Matters (Tables)

12 Months Ended

Dec. 31, 2019

Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract]

Schedule of actual and required capital amounts and ratios

The following table shows the actual and required capital amounts and ratios for 1st Source Corporation and 1st Source Bank as of December 31, 2019 and 2018.



	Actual				Minimum Capital Adequacy				Minimum Capital Adequacy with Capital Buffer⁽¹⁾				To Be Well Capitalized Under Prompt Corrective Action Provisions
(Dollars in thousands)	Amount		Ratio		Amount		Ratio		Amount		Ratio		Amount		Ratio
2019
Total Capital (to Risk-Weighted Assets):
1st Source Corporation	$	882,453	14.90	%	$	473,782	8.00	%	$	621,839	10.50	%	$	592,227	10.00	%
1st Source Bank	804,131		13.57		474,189		8.00		622,373		10.50		592,736		10.00
Tier 1 Capital (to Risk-Weighted Assets):
1st Source Corporation	807,926		13.64		355,336		6.00		503,393		8.50		473,782		8.00
1st Source Bank	729,541		12.31		355,642		6.00		503,826		8.50		474,189		8.00
Common Equity Tier 1 Capital (to Risk-Weighted Assets):
1st Source Corporation	743,467		12.55		266,502		4.50		414,559		7.00		384,948		6.50
1st Source Bank	722,082		12.18		266,731		4.50		414,915		7.00		385,279		6.50
Tier 1 Capital (to Average Assets):
1st Source Corporation	807,926		12.19		265,122		4.00		N/A		N/A		331,402		5.00
1st Source Bank	729,541		11.03		264,500		4.00		N/A		N/A		330,625		5.00
2018
Total Capital (to Risk-Weighted Assets):
1st Source Corporation	$	821,975	14.68	%	$	447,909	8.00	%	$	552,888	9.875	%	$	559,887	10.00	%
1st Source Bank	744,326		13.29		448,152		8.00		553,188		9.875		560,190		10.00
Tier 1 Capital (to Risk-Weighted Assets):
1st Source Corporation	751,575		13.42		335,932		6.00		440,911		7.875		447,909		8.00
1st Source Bank	673,888		12.03		336,114		6.00		441,150		7.875		448,152		8.00
Common Equity Tier 1 Capital (to Risk-Weighted Assets):
1st Source Corporation	693,067		12.38		251,949		4.50		356,928		6.375		363,926		6.50
1st Source Bank	672,380		12.00		252,086		4.50		357,121		6.375		364,124		6.50
Tier 1 Capital (to Average Assets):
1st Source Corporation	751,575		12.06		249,185		4.00		N/A		N/A		311,481		5.00
1st Source Bank	673,888		10.82		249,052		4.00		N/A		N/A		311,315		5.00

(1) The capital conservation buffer requirement was fully phased in as of December 31, 2019.