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Fair Value (Tables)
 9 Months Ended
Sep. 30, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
Financial assets and liabilities measured at fair value on a recurring basis as of September 30, 2020 and December 31, 2019 were as follows (in thousands):
September 30, 2020December 31, 2019
Level 1Level 2Level 3TotalLevel 1Level 2Level 3Total
Asset/Liability Type:
HUF Funds - restricted cash(1)
$— $1,526 $— $1,526 $— $627 $— $627 
Demand Deposit(2)
2,135 — — 2,135 2,132 — — 2,132 
Certificate of Deposit - Restricted(1)
— 790 — 790 — 705 — 705 
Long-term debt(3)
— 128,060 — 128,060 — 121,075 — 121,075 
Acquisition Liability(4)
— — 838 838 — — 838 838 
Total$2,135 $130,376 $838 $133,349 $2,132 $122,407 $838 $125,377 

(1) HUF Funds - restricted cash and Certificate of Deposit - Restricted are presented on the Restricted cash line item of the Company's consolidated balance sheets and are valued at amortized cost, which approximates fair value.
(2) Demand Deposit is presented on the Cash and cash equivalents line item of the Company's consolidated balance sheets and is valued at amortized cost, which approximates fair value.
(3) The fair value of our debt was estimated based on interest rates considered available for instruments of similar terms and remaining maturities.
(4) As part of the Red Rock acquisition, the Company is required to pay to the seller a growth premium equal to $750 for each new account established within three specified growth premium areas, commencing in each area on the date of the first meter installation and ending on the earlier of ten years after such first installation date, or twenty years from the acquisition date. The fair value of the acquisition liability was calculated using a discounted cash flow technique which utilized unobservable inputs developed using the Company's estimates and assumptions. Significant inputs used in the fair value calculation are as follows: year of the first meter installation, total new accounts per year, years to complete full build out, and discount rate.