Note 16. Commitments and Contingencies

Operating Leases

The Company has obligations under various noncancelable long-term operating leases for equipment. In addition, the Company has various obligations under other equipment leases of less than one year.

Total rent expense was approximately $1,182,000, $1,256,000 and $856,000 for the years ended September 30, 2013, 2012 and 2011, respectively.

The future minimum rental payments under non-cancelable operating leases are as follows:

The Company has entered into Change in Control Agreements ("CIC Agreements") with its executive officers and 22 other key employees ("CIC Recipients"). The CIC Agreements provide for cash payments to CIC Recipients in the event of a change in control as defined in the CIC Agreements followed by the termination of a CIC Recipient within 18 months of the change in control. The estimated total potential payments required by CIC Agreements are $1,071,000 for executive officers and $1,600,000 for other key employees. See Note 18. Subsequent Events.

Letters of Credit

The Company has retained certain self-insurance risks with respect to losses for workers' compensation and has standby letters of credit in the amounts of $200,000 for each of the years ended September 30, 2013 and 2012, to secure its insurance obligations.