After months of negotiations with lenders, homebuilder Kimball Hill filed for Chapter 11 bankruptcy protection. With more than $60 million in cash, Rolling Meadows-based Kimball Hill plans to continue operations as it restructures its debt. "We hope to agree on a reorganization plan in the next 90 days,'' President and CEO Ken Love said in a statement. Kimball Hill lists assets of $795.5 million and debts of $631.9 million, ...