Capital Requirements and Regulatory Restrictions (Tables)

12 Months Ended

Dec. 31, 2014

Capital Requirements and Regulatory Restrictions [Abstract]

The Company's and the Bank's actual and required capital amounts and ratios as are as follows:

					Capital				Requirement to be
	Actual				Requirements				Well-Capitalized
(In thousands)	Amount		Ratio		Amount		Ratio		Amount		Ratio
At December 31, 2014
Total capital (to risk-weighted assets)
Cass Information Systems, Inc.	$	207,468	21.91	%	$	75,761	8.00	%	$	N/A	N/A	%
Cass Commercial Bank		91,249	15.88			45,977	8.00			57,472	10.00
Tier I capital (to risk-weighted assets)
Cass Information Systems, Inc.		195,630	20.66			37,880	4.00			N/A	N/A
Cass Commercial Bank		84,049	14.62			22,989	4.00			34,483	6.00
Tier I capital (to average assets)
Cass Information Systems, Inc.		195,630	13.42			43,742	3.00			N/A	N/A
Cass Commercial Bank		84,049	11.94			21,124	3.00			35,207	5.00
At December 31, 2013
Total capital (to risk-weighted assets)
Cass Information Systems, Inc.	$	191,984	22.27	%	$	68,956	8.00	%	$	N/A	N/A	%
Cass Commercial Bank		83,168	15.38			43,256	8.00			54,071	10.00
Tier I capital (to risk-weighted assets)
Cass Information Systems, Inc.		181,198	21.02			34,478	4.00			N/A	N/A
Cass Commercial Bank		76,395	14.13			21,628	4.00			32,442	6.00
Tier I capital (to average assets)
Cass Information Systems, Inc.		181,198	13.12			41,438	3.00			N/A	N/A
Cass Commercial Bank		76,395	11.37			20,162	3.00			33,603	5.00

- Definition

Tabular disclosure of the capital amounts and ratios as of the balance sheet date, indicating whether the entity or entities are in compliance with regulatory capital requirements, by entity.

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