|ENVISION HEALTHCARE CORP filed this Form 10-Q on 08/08/2017|
Insurance collateral consisted of the following as of June 30, 2017 and December 31, 2016 (in millions):
Amortized cost basis and aggregate fair value of the Company's available-for-sale securities as of June 30, 2017 and December 31, 2016 were as follows (in millions):
As of June 30, 2017, available-for-sale securities included U.S. Treasuries, corporate bonds and fixed income securities of $3.6 million with contractual maturities within one year and $36.1 million with contractual maturities extending longer than one year through five years and $1.5 million with contractual maturities extending longer than five years. Actual maturities may differ from contractual maturities as a result of the Company's ability to sell these securities prior to maturity.
The Company's available-for-sale investment securities that were temporarily impaired as of June 30, 2017 and December 31, 2016 consisted of corporate equity securities that had a fair value of $2.9 million and $7.6 million with a cumulative unrealized loss position of less than $0.1 million and $0.3 million for less than twelve months, respectively. There were no available-for-sale investment securities that were other-than-temporarily impaired as of June 30, 2017.
The Company evaluates the investment securities available-for-sale on a quarterly basis to determine whether declines in the fair value of these securities are other-than-temporary. The evaluation consists of reviewing the fair value of the security compared to the carrying amount, the historical volatility of the price of each security, and any industry and company specific factors related to each security.
The Company is not aware of any specific factors indicating that the underlying issuers of the corporate bonds/fixed income securities would not be able to pay interest as it becomes due or repay the principal amount at maturity. Therefore, the Company believes that the changes in the estimated fair values of these debt securities are related to temporary market fluctuations and the Company does not