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Insurance Premium Financing
12 Months Ended
Dec. 31, 2018
Debt Disclosure [Abstract]  
Insurance Premium Financing
NOTE 7. INSURANCE PREMIUM FINANCING 
In October 2017, the Company executed an unsecured note payable for $4.1 million to a third-party financing company for a portion of the Company's annual insurance premiums.  The note, which is payable in installments of principal and interest of approximately $1.4 million, bears interest at 3.0% and matured in October 2018.
During October 2018, the Company entered into agreements to pay approximately $4.7 million to third-party financing companies for the Company's annual insurance premiums. The balance of the note payable as of December 31, 2018 was $4.4 million.