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Investments
9 Months Ended
Sep. 30, 2018
Investments [Abstract]  
Investments
Investments

Other investments, comprised of equity securities which do not have readily determinable fair values, consist of the following:
(in thousands)
9/30/2018
 
12/31/2017
Cost method:
 
 
 
CoBank
$
7,441

 
$
6,818

Other – equity in other telecommunications partners
784

 
811

 
8,225

 
7,629

Equity method:
 
 
 
Other
575

 
564

 
575

 
564

Total other investments
$
8,800

 
$
8,193



The CoBank investment is primarily related to patronage distributions of restricted equity and is a required investment related to the Credit Facility. Refer to Note 12, Long-Term Debt, for additional information.

The Company's investments carried at fair value consisted of:
(in thousands)
9/30/2018
 
12/31/2017
Cash and Equivalents
$
1,408

 
$

Domestic equity funds
1,675

 
2,856

International equity funds
413

 
423

Total investments carried at fair value
$
3,496

 
$
3,279



Investments carried at fair value were acquired under a rabbi trust arrangement related to the Company’s Supplemental Executive Retirement Plan (SERP).  The Company purchases investments in the trust to mirror the investment elections of participants in the SERP. The Company recorded net gains of $0.1 million in both the three months ended September 30, 2018 and 2017. The Company recorded net gains of $0.1 million and $0.3 million in the nine months ended September 30, 2018 and September 30, 2017, respectively. Fair values for these investments are determined using net asset value per share and are not classified in the fair value hierarchy. Gains and losses on the investments in the trust are reflected as increases or decreases in the liability owed to the participants. The increases or decreases to the liability are recorded as pension expense included within "Non-operating income (loss), net" in the Company's consolidated statements of operations.