NOTE 13—COMMITMENTS AND CONTINGENCIES

The Company is involved in certain legal proceedings arising in the ordinary course of business. Management, after review and consultation with legal counsel, believes the ultimate success of parties of the legal proceedings is remote and the ultimate aggregate liability, if any, resulting from such proceedings will not be material to the financial position of the Company.

Employee Retirement Plans

The Company maintains a qualified profit‑sharing plan (the “Plan") in the United States.  The annual contribution for 2015 is 3% of total cash compensation or $7,950, whichever is less. Employees are generally eligible to participate in the Plan after six months of service and are 100% vested upon entering the Plan. For the years ended December 31, 2015, 2014 and 2013, $1.5 million, $1.6 million and $1.6 million were contributed to the Plan by the Company, respectively.

Leases

The Company leases its office space under long‑term operating lease agreements which expire at various dates through August 2021. Under the operating leases, the Company pays certain operating expenses relating to the leased property and monthly base rent.

Aggregate future minimum payments under noncancelable leases with initial or remaining terms of one year or more consist of the following at December 31, 2015:

The Company’s rental expense for operating leases was $2.9 million, $3.6 million and $3.2 million, in 2015, 2014 and 2013, respectively.

STA Consulting Contingent Consideration

The Company expects to pay the remaining contingent liability of $1.7 in the first quarter of 2016 related to 2015 performance.  The Company also increased the contingent consideration liability by $0.5 million for the year ended December 31, 2015, based on the latest estimates of future profit level due to completion of new projects.

CCI Contingent Consideration

As of December 31, 2015, we have recorded a liability of $1.2 million representing the estimated fair value of contingent consideration related to the acquisition of CCI Consulting, of which $0.6 million is classified as current and included in accrued expenses on the consolidated balance sheet.

Saugatuck Contingent Consideration

As of December 31, 2015, we have recorded a liability of $1.1 million representing the estimated fair value of contingent consideration related to the acquisition of Saugatuck, of which $0.2 million is classified as current and included in accrued expenses on the consolidated balance sheet.