Long-Lived Asset Impairment	6 Months Ended
Jun. 30, 2015
Long-Lived Asset Impairment
Long-Lived Asset Impairment	11. Long-Lived Asset Impairment We review long-lived assets, including property, plant and equipment and identifiable intangibles that are being amortized, for impairment whenever events or changes in circumstances, including the removal of compressor units from our active fleet, indicate that the carrying amount of an asset may not be recoverable. During the three and six months ended June 30, 2015, we reviewed the future deployment of our idle compression assets used in our North America contract operations and international contract operations segments for units that were not of the type, configuration, condition, make or model that are cost efficient to maintain and operate. Based on this review, we determined that approximately 80 and 160 idle compressor units totaling approximately 52,000 and 82,000 horsepower would be retired from the active fleet during the three and six months ended June 30, 2015, respectively. The retirement of these units from the active fleet triggered a review of these assets for impairment. As a result, we recorded a $14.4 million and a $25.8 million asset impairment to reduce the book value of each unit to its estimated fair value during the three and six months ended June 30, 2015, respectively. The fair value of each unit was estimated based on either the expected net sale proceeds compared to other fleet units we recently sold and/or a review of other units recently offered for sale by third parties, or the estimated component value of the equipment we plan to use. During the first quarter of 2015, we evaluated a long-term note receivable from the purchaser of our Canadian Operations for impairment. This review was triggered by an offer from the purchaser of our Canadian Operations to prepay the note receivable at a discount to its current book value. The fair value of the note receivable as of March 31, 2015 was based on the amount offered by the purchaser of our Canadian Operations to prepay the note receivable. The difference between the book value of the note receivable at March 31, 2015 and its fair value resulted in the recording of an impairment of long-lived assets of $1.4 million during the six months ended June 30, 2015. In April 2015, we accepted the offer to early settle this note receivable. During the three and six months ended June 30, 2015, we evaluated other long-lived assets for impairment and recorded long-lived asset impairments of $1.0 million on these assets. During the three and six months ended June 30, 2014, we evaluated the future deployment of our idle fleet and determined to retire and either sell or re-utilize the key components of approximately 130 and 170 idle compressor units, respectively, representing approximately 35,000 and 46,000 horsepower, respectively, previously used to provide services in our North America contract operations segment. As a result, we performed an impairment review and recorded a $9.8 million and a $13.7 million asset impairment to reduce the book value of each unit to its estimated fair value, during the three and six months ended June 30, 2014, respectively. The fair value of each unit was estimated based on either the expected net sale proceeds compared to other fleet units we recently sold and/or a review of other units recently offered for sale by third parties, or the estimated component value of the equipment we plan to use.

11. Long-Lived Asset Impairment

We review long-lived assets, including property, plant and equipment and identifiable intangibles that are being amortized, for impairment whenever events or changes in circumstances, including the removal of compressor units from our active fleet, indicate that the carrying amount of an asset may not be recoverable.

During the three and six months ended June 30, 2015, we reviewed the future deployment of our idle compression assets used in our North America contract operations and international contract operations segments for units that were not of the type, configuration, condition, make or model that are cost efficient to maintain and operate. Based on this review, we determined that approximately 80 and 160 idle compressor units totaling approximately 52,000 and 82,000 horsepower would be retired from the active fleet during the three and six months ended June 30, 2015, respectively. The retirement of these units from the active fleet triggered a review of these assets for impairment. As a result, we recorded a $14.4 million and a $25.8 million asset impairment to reduce the book value of each unit to its estimated fair value during the three and six months ended June 30, 2015, respectively. The fair value of each unit was estimated based on either the expected net sale proceeds compared to other fleet units we recently sold and/or a review of other units recently offered for sale by third parties, or the estimated component value of the equipment we plan to use.

During the first quarter of 2015, we evaluated a long-term note receivable from the purchaser of our Canadian Operations for impairment. This review was triggered by an offer from the purchaser of our Canadian Operations to prepay the note receivable at a discount to its current book value. The fair value of the note receivable as of March 31, 2015 was based on the amount offered by the purchaser of our Canadian Operations to prepay the note receivable. The difference between the book value of the note receivable at March 31, 2015 and its fair value resulted in the recording of an impairment of long-lived assets of $1.4 million during the six months ended June 30, 2015. In April 2015, we accepted the offer to early settle this note receivable.

During the three and six months ended June 30, 2015, we evaluated other long-lived assets for impairment and recorded long-lived asset impairments of $1.0 million on these assets.

During the three and six months ended June 30, 2014, we evaluated the future deployment of our idle fleet and determined to retire and either sell or re-utilize the key components of approximately 130 and 170 idle compressor units, respectively, representing approximately 35,000 and 46,000 horsepower, respectively, previously used to provide services in our North America contract operations segment. As a result, we performed an impairment review and recorded a $9.8 million and a $13.7 million asset impairment to reduce the book value of each unit to its estimated fair value, during the three and six months ended June 30, 2014, respectively. The fair value of each unit was estimated based on either the expected net sale proceeds compared to other fleet units we recently sold and/or a review of other units recently offered for sale by third parties, or the estimated component value of the equipment we plan to use.