Commitments and Contingencies (Notes)	9 Months Ended
Sep. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	7. Commitments and Contingencies 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. The Company leases two properties owned by related parties. Rent expense for these two properties was $0.3 million for the three months ended September 30, 2018 and 2017, and $1.0 million for the nine months ended September 30, 2018 and 2017. As a result of the acquisition of ECS (see Note 4. Acquisitions), the Company assumed various operating lease commitments for which total future payments are approximately $27.6 million as of September 30, 2018, with the last payment scheduled to be in February 2027. The Company carries retention policies for its workers’ compensation liability exposures. The workers' compensation loss reserves are based upon an actuarial study conducted by a third-party specialist. Changes in estimates and differences between estimates and the actual payments for claims are recognized in the period that the estimates change or the payments are made. The workers' compensation loss reserves were approximately $2.2 million and $2.1 million, at September 30, 2018 and December 31, 2017, net of anticipated insurance and indemnification recoveries of $14.9 million and $12.7 million, at September 30, 2018 and December 31, 2017, respectively. We have undrawn stand-by letters of credit outstanding to secure obligations for workers’ compensation claims with various insurance carriers. These stand-by letters of credit were $4.4 million at September 30, 2018 and December 31, 2017. The Company’s deferred compensation plan liability was $6.5 million at September 30, 2018, and was included in other long-term liabilities. The Company established a rabbi trust to fund the deferred compensation plan (see Note 8. Fair Value Measurements). Legal Proceedings The Company is involved in various legal proceedings, claims and litigation arising in the ordinary course of business. The Company does not believe that the disposition of matters that are pending or asserted will have a material effect on its condensed consolidated financial statements.

7. Commitments and Contingencies

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. The Company leases two properties owned by related parties. Rent expense for these two properties was $0.3 million for the three months ended September 30, 2018 and 2017, and $1.0 million for the nine months ended September 30, 2018 and 2017.

As a result of the acquisition of ECS (see Note 4. Acquisitions), the Company assumed various operating lease commitments for which total future payments are approximately $27.6 million as of September 30, 2018, with the last payment scheduled to be in February 2027.

The Company carries retention policies for its workers’ compensation liability exposures. The workers' compensation loss reserves are based upon an actuarial study conducted by a third-party specialist. Changes in estimates and differences between estimates and the actual payments for claims are recognized in the period that the estimates change or the payments are made. The workers' compensation loss reserves were approximately $2.2 million and $2.1 million, at September 30, 2018 and December 31, 2017, net of anticipated insurance and indemnification recoveries of $14.9 million and $12.7 million, at September 30, 2018 and December 31, 2017, respectively. We have undrawn stand-by letters of credit outstanding to secure obligations for workers’ compensation claims with various insurance carriers. These stand-by letters of credit were $4.4 million at September 30, 2018 and December 31, 2017.

The Company’s deferred compensation plan liability was $6.5 million at September 30, 2018, and was included in other long-term liabilities. The Company established a rabbi trust to fund the deferred compensation plan (see Note 8. Fair Value Measurements).

Legal Proceedings

The Company is involved in various legal proceedings, claims and litigation arising in the ordinary course of business. The Company does not believe that the disposition of matters that are pending or asserted will have a material effect on its condensed consolidated financial statements.