Common Stock (Tables)

9 Months Ended

Sep. 30, 2019

Common Stock [Abstract]

Summary Of Components Used To Calculate Basic And Diluted Income Per Share

Presented below is a summary of the components used to calculate basic and diluted income per share. The Company applies the two-class method of computing income per share, as nonvested share-based awards that contain nonforfeitable rights to dividends are considered securities which participate in undistributed earnings with common stock. The two-class method requires the calculation of separate income per share amounts for the nonvested share-based awards and for common stock. Income per share attributable to common stock is shown in the table below. Nonvested share-based awards are further discussed in Note 13.

	For the Three Months Ended September 30				For the Nine Months Ended September 30
(In thousands, except per share data)	2019		2018		2019		2018
Basic income per common share:
Net income attributable to Commerce Bancshares, Inc.	$	109,242	$	112,576	$	314,351	$	323,890
Less preferred stock dividends	2,250		2,250		6,750		6,750
Net income available to common shareholders	106,992		110,326		307,601		317,140
Less income allocated to nonvested restricted stock	1,040		1,161		2,996		3,421
Net income allocated to common stock	$	105,952	$	109,165	$	304,605	$	313,719
Weighted average common shares outstanding	107,602		110,889		109,024		110,925
Basic income per common share	$	.98	$	.99	$	2.79	$	2.83
Diluted income per common share:
Net income available to common shareholders	$	106,992	$	110,326	$	307,601	$	317,140
Less income allocated to nonvested restricted stock	1,039		1,159		2,991		3,413
Net income allocated to common stock	$	105,953	$	109,167	$	304,610	$	313,727
Weighted average common shares outstanding	107,602		110,889		109,024		110,925
Net effect of the assumed exercise of stock-based awards - based on
the treasury stock method using the average market price for the respective periods	254		371		270		360
Weighted average diluted common shares outstanding	107,856		111,260		109,294		111,285
Diluted income per common share	$	.98	$	.98	$	2.79	$	2.82