Restructuring	12 Months Ended
Dec. 31, 2015
Restructuring And Related Activities [Abstract]
Restructuring	12. Restructuring As of December 31, 2015, we completed the commercial production and shipment of all ADASUVE orders received from Teva and Ferrer. With commercial production completed, we suspended our ADASUVE commercial manufacturing operations. During the fiscal year ended December 31, 2015, we concluded that due to (i) the suspension of the ADASUVE commercial production operations during the third quarter of 2015, (ii) our continued operating losses and poor cash flows, (iii) the uncertainty of when we will resume commercial production, (iv) the limited ability to sell the capitalized equipment, and (v) our basic ability to continue as a going concern, the carrying amounts of our long-lived assets including the first and second manufacturing cells from Autoliv ASP, Inc., or Autoliv, exceeded their fair values based on a Level 3 fair value measurement. We recognized non-cash impairment charges of approximately $8,591,000 on our long-lived assets, $1,229,000 of related inventory with fixed expiration dates, and $1,024,000 on prepayments made to the supplier of our lower housing assembly for fiscal year 2015. We did not record any long-lived asset impairment during 2014. As part of our restructuring plan, we eliminated 33 employees through the third quarter of 2015. Each affected employee received (i) severance payments equal to three months of salary plus an additional amount equal to one week of salary for each year of Alexza service in excess of five years; and (ii) three months of paid medical insurance premiums and outplacement services, or in total, the Severance Package. In addition, the majority of our remaining employees have received notification that their positions may be eliminated. If we are unable to obtain additional financing and further restructure our operations, the remaining employees who received notification will receive benefits substantially equivalent to the Severance Package. The aggregate cost of the Severance Package for these employees is being amortized over the period in which the employees are expected to provide service. During the fiscal year 2015, we recognized $2,718,000 of severance related expenses and none in 2014 and 2013, which is recorded in accrued compensation as of December 31, 2015. We have accrued $1,474,000 in severance related expenses.

12. Restructuring

As of December 31, 2015, we completed the commercial production and shipment of all ADASUVE orders received from Teva and Ferrer. With commercial production completed, we suspended our ADASUVE commercial manufacturing operations.

During the fiscal year ended December 31, 2015, we concluded that due to (i) the suspension of the ADASUVE commercial production operations during the third quarter of 2015, (ii) our continued operating losses and poor cash flows, (iii) the uncertainty of when we will resume commercial production, (iv) the limited ability to sell the capitalized equipment, and (v) our basic ability to continue as a going concern, the carrying amounts of our long-lived assets including the first and second manufacturing cells from Autoliv ASP, Inc., or Autoliv, exceeded their fair values based on a Level 3 fair value measurement. We recognized non-cash impairment charges of approximately $8,591,000 on our long-lived assets, $1,229,000 of related inventory with fixed expiration dates, and $1,024,000 on prepayments made to the supplier of our lower housing assembly for fiscal year 2015.

We did not record any long-lived asset impairment during 2014.

As part of our restructuring plan, we eliminated 33 employees through the third quarter of 2015. Each affected employee received (i) severance payments equal to three months of salary plus an additional amount equal to one week of salary for each year of Alexza service in excess of five years; and (ii) three months of paid medical insurance premiums and outplacement services, or in total, the Severance Package. In addition, the majority of our remaining employees have received notification that their positions may be eliminated. If we are unable to obtain additional financing and further restructure our operations, the remaining employees who received notification will receive benefits substantially equivalent to the Severance Package. The aggregate cost of the Severance Package for these employees is being amortized over the period in which the employees are expected to provide service. During the fiscal year 2015, we recognized $2,718,000 of severance related expenses and none in 2014 and 2013, which is recorded in accrued compensation as of December 31, 2015. We have accrued $1,474,000 in severance related expenses.