XML 24 R14.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Note 8 - Preferred Stock and Warrants | 9 Months Ended
--- | ---
Sep. 30, 2017
Notes to Financial Statements |
Preferred Stock And Warrants [Text Block] | ( 8 ) Preferred Stock and Warrants The Company redeemed 9,360 shares of Fixed Rate Cumulative Perpetual Preferred Stock, Series A (the Preferred Stock) outstanding with private investors on March 31, 2017. As a result, there is no outstanding Preferred Stock as of September 30, 2017. The Company redeemed 8,661 shares of Preferred Stock at $1,000 per share in 2016. The Company redeemed 9,979 shares of Preferred Stock at $1,000 per share during 2015. The Company also had a warrant (the Warrant) to purchase up to 500,000 shares of the Company’s common stock outstanding with private investors. Both the Preferred Stock and the Warrant originated in 2009 through transactions with the United States Department of the Treasury and were subsequently sold to the public through an auction process in 2013. The Preferred Stock qualifie d as Tier 1 capital and was nonvoting, other than class voting rights on certain matters that could adversely affect the Preferred Stock. The Preferred Stock was redeemable by the Company at the liquidation preference of $1,000 per share, plus any accrued and unpaid dividends. The Warrant could be exercised on or before January 9, 2019 at an exercise price of $8.40 per share. No voting rights may be exercised with respect to the shares of the Warrant until the Warrant was exercised.

X
- Definition The entire disclosure for terms, amounts, nature of changes, rights and privileges, dividends, and other matters related to preferred stock and warrants. + References No definition available. + Details
Name: | cban_PreferredStockAndWarrantsTextBlock
Namespace Prefix: | cban_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_DisclosureTextBlockAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration