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Commitments and Contingencies | 12 Months Ended
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Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract] |
Commitments and Contingencies | COMMITMENTS AND CONTINGENCIES Fuel Tech is subject to various claims and contingencies related to, among other things, workers compensation, general liability (including product liability), and lawsuits. The Company records liabilities where a contingent loss is probable and can be reasonably estimated. If the reasonable estimate of a probable loss is a range, the Company records the most probable estimate of the loss or the minimum amount when no amount within the range is a better estimate than any other amount. The Company discloses a contingent liability even if the liability is not probable or the amount is not estimable, or both, if there is a reasonable possibility that a material loss may have been incurred. Operating Leases We lease office space, automobiles and certain equipment under agreements expiring on various dates through 2020. Future minimum lease payments under non-cancellable operating leases that have initial or remaining lease terms in excess of one year as of December 31, 2016 are as follows:
Year of Payment | Amount
2017 | $ | 778 |
2018 | 476 |
2019 | 439 |
2020 | 88 |
Total | $ | 1,781 |
For the years ended December 31, 2016, 2015 and 2014, rent expense, net of related party sub-lease income, approximated $1,006, $1,166, and $1,041, respectively. We are party to a sublease agreement with American Bailey Corporation (ABC) that obligates ABC to reimburse us for its share of lease and lease-related expenses under our February 1, 2010 lease of executive offices in Stamford, Connecticut. Please refer to Note 11 to the consolidated financial statements for a discussion of our relationship with ABC. The future minimum lease income under this non-cancellable sublease as of December 31, 2016 is as follows:
Year of Payment | Amount
2017 | $ | 155 |
2018 | 155 |
2019 | 155 |
Total | $ | 465 |
The terms of the Company’s eight primary lease arrangements are as follows:
• | The Stamford, Connecticut building lease, for approximately 6,440 square feet, runs from February 1, 2010 to December 31, 2019. The facility houses certain administrative functions.
• | The Beijing, China building lease, for approximately 8,000 square feet, runs from September 1, 2014 to August 31, 2017. This facility serves as the operating headquarters for our Beijing Fuel Tech operation.
• | The Durham, North Carolina building lease, for approximately 2,590 square feet, runs from July 1, 2016 to July 31, 2019. This facility houses engineering operations.
• | The Gallarate, Italy building lease, for approximately 1,300 square feet, runs from May 1, 2013 to April 30, 2019. This facility serves as the operating headquarters for our European operations.
• | The Westlake, Ohio building lease, for approximately 5,000 square feet, runs from May 1, 2014 to April 30, 2017. This facility houses engineering operations. Upon expiration of the existing lease on April 30, 2017, the Company will move to a smaller location with 3,000 square feet of space, and with the lease term commencing on May 1, 2017 and ending on April 30, 2020.
• | The Aurora, IL warehouse lease, for approximately 11,000 square feet, runs from September 1, 2013 to December 31, 2020. This facility serves as an outside warehouse facility.
• | The Overland Park, KS lease, for approximately 600 square feet, runs from October 16, 2015 to October 15, 2018. This facility serves primarily as a sales office.
• | The Aberdeen Corners, GA lease, for an office suite, runs from June 1, 2015 to May 31, 2017. This facility primarily serves as a sales office.
Performance Guarantees The majority of Fuel Tech’s long-term equipment construction contracts contain language guaranteeing that the performance of the system that is being sold to the customer will meet specific criteria. On occasion, performance surety bonds and bank performance guarantees/letters of credit are issued to the customer in support of the construction contracts as follows:
• | in support of the warranty period defined in the contract; or
• | in support of the system performance criteria that are defined in the contract.
As of December 31, 2016, we had outstanding bank performance guarantees and letters of credit in the amount of $3,314 and performance surety bonds in the amount of $4,598 in support of equipment construction contracts that have not completed their final acceptance test or that are still operating under a warranty period. The performance guarantees and letters of credit expire in dates ranging from March 2017 through October 2019. The expiration dates may be extended if the project completion dates are extended. Our management believes it is probable that these projects will be successfully completed and that there will not be a material adverse impact on our operations from these bank performance guarantees and letters of credit. As a result, no liability has been recorded for these performance guarantees. Product Warranties We issue a standard product warranty with the sale of our products to customers. Our recognition of warranty liability is based primarily on analyses of warranty claims experience in the preceding years as the nature of our historical product sales for which we offer a warranty are substantially unchanged. This approach provides an aggregate warranty accrual that is historically aligned with actual warranty claims experienced. Changes in the warranty liability in 2016, 2015 and 2014 are summarized below:
|  | 2016 |  | 2015 |  | 2014
Aggregate product warranty liability at beginning of year |  | $ | 268 |  |  | $ | 268 |  |  | $ | 596 |
Net aggregate expense (income) related to product warranties |  | (109 | ) |  | 8 |  |  | (311 | )
Aggregate reductions for payments |  | — |  |  | (8 | ) |  | (17 | )
Aggregate product warranty liability at end of year |  | $ | 159 |  |  | $ | 268 |  |  | $ | 268 |
During the second quarter of 2016, the Company received a notice from a contractor that performed installation work on one of the Company's APC projects regarding $3.9 million in purported expenses beyond the contractually agreed cap on expenses. The Company initiated the process, as required by the Company's contract with the subcontractor, to submit the dispute into mediation. On March 2, 2017, the Company agreed to a final settlement with the subcontractor of $1,150,000 and the full amount is included in the accrued liabilities line of the consolidated balance sheet as of December 31, 2016.

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