Commitments and Contingencies

3 Months Ended

Mar. 31, 2013

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies. The Company is partially self-insured for its workers’ compensation and medical malpractice liabilities. The Company accounts for claims incurred, but not reported based on estimates derived from historical claims experience and current trends of industry data. Changes or differences in estimates and actual payments for claims are recognized in the period that the estimates changed or the payments were made. The self-insurance claim liability was approximately $10.5 million and $10.3 million as of March 31, 2013 and December 31, 2012, respectively. The Company also has outstanding letters of credit securing obligations for workers’ compensation claims with various insurance carriers of $3.0 million as of March 31, 2013 and $2.8 million as of December 31, 2012.

The Company is involved in various legal proceedings, claims and litigation arising in the ordinary course of business. Based on the facts currently available, the Company does not believe that the disposition of matters that are pending or asserted will have a material effect on its financial position, results of operations or cash flows.

The Company is subject to earn-out obligations entered into in connection with certain of its acquisitions. If the acquired businessesmeet predetermined targets, the Company is obligated to make additional cash payments in accordance with the terms of such earn-out obligations. As of March 31, 2013, the Company has potential future earn-out obligations of approximately $8.9 million through 2013.

The Company has entered into various non-cancelable operating leases, primarily related to its facilities and certain office equipment used in the ordinary course of business. As a result of the Apex acquisition, the Company leases two properties owned by related parties.