QuickLinks -- Click here to rapidly navigate through this document

Exhibit 10.18(b)

Amended Description of 2010 Cash Bonus Arrangements for Named Executive Officers

•Each named executive may receive a cash bonus for 2010 based on a percentage of
that executive's base salary as in effect at the time of the determination of
the bonus.

•One half of the bonus percentage will be determined by the Company's overall
financial performance, as measured by the Company's fully diluted earnings per
share for fiscal year 2010.(1)

•One half of the bonus percentage will be determined by the executive's
individual performance, as measured by factors the Compensation Committee may
deem appropriate.

•The aggregate target bonus for our chief executive officer will be 100% of his
base salary.

•The aggregate maximum bonus for our chief executive officer will be 200% of his
base salary.

•The aggregate target bonus for our chief financial officer will be 65% of his
base salary.

•The aggregate maximum bonus for our chief financial officer will be 130% of his
base salary.

•The overall maximum bonus percentages also may be increased or reduced based on
the Company's financial performance.

--------------------------------------------------------------------------------

(1)As described in a Current Report on Form 8-K filed on February 18, 2011, the
Compensation Committee amended the 2010 cash bonus arrangement to exclude from
the computation of fully diluted earnings per share, as used in determining the
Corporate Performance-Based Bonus, approximately $18.3 million of legal
settlement expenses (net of insurance proceeds) associated with the previously
announced settlement of class action lawsuits in North Carolina and Missouri.

--------------------------------------------------------------------------------

QuickLinks

Exhibit 10.18(b)

Amended Description of 2010 Cash Bonus Arrangements for Named Executive Officers