Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
ASSETS
Loans	$ 9,982,686	$ 9,831,384
Allowance for loan losses	(168,032)	(172,532)
Net loans	9,814,654	9,658,852
Loans held for sale	9,085	8,827
Investment securities:
Available for sale ($629,599 and $418,046 pledged in 2012 and 2011, respectively, to secure repurchase agreements)	9,572,751	9,522,248
Trading	23,400	28,837
Non-marketable	118,620	118,650
Total investment securities	9,714,771	9,669,735
Short-term federal funds sold and securities purchased under agreements to resell	7,820	27,595
Long-term securities purchased under agreements to resell	1,200,000	1,200,000
Interest earning deposits with banks	199,956	179,164
Cash and due from banks	413,019	573,066
Land, buildings and equipment, net	355,464	357,612
Goodwill	125,585	125,585
Other intangible assets, net	4,870	5,300
Other assets	381,984	353,853
Total assets	22,227,208	22,159,589
LIABILITIES AND EQUITY
Non-interest bearing	6,170,274	6,299,903
Savings, interest checking and money market	9,802,838	9,817,943
Time open and C.D.'s of less than $100,000	1,061,350	1,074,618
Time open and C.D.'s of $100,000 and over	1,480,405	1,156,189
Total deposits	18,514,867	18,348,653
Federal funds purchased and securities sold under agreements to repurchase	1,126,858	1,083,550
Other Borrowings	102,783	103,710
Other liabilities	303,509	452,102
Total liabilities	20,048,017	19,988,015
Commerce Bancshares, Inc. stockholders' equity:
Preferred stock, $1 par value Authorized and unissued 2,000,000 shares	0	0
Common stock, $5 par value Authorized 100,000,000 shares; issued 89,277,398 shares in 2012 and 2011	458,646	458,646
Capital surplus	1,101,445	1,102,507
Retained earnings	517,792	477,210
Treasury stock of 1,581,929 shares in 2012 and 217,755 shares in 2011, at cost	(32,501)	(7,580)
Accumulated other comprehensive income	129,763	136,344
Total Commerce Bancshares, Inc. stockholders' equity	2,175,145	2,167,127
Non-controlling interest	4,046	4,447
Total equity	2,179,191	2,171,574
Total liabilities and equity	$ 22,227,208	$ 22,159,589