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Line of Credit
6 Months Ended
Jun. 30, 2018
Debt Disclosure [Abstract]  
Line of Credit
14.Line of Credit

Nodak Insurance has a $3,000 line of credit with Wells Fargo Bank, N.A., of which there were no outstanding amounts as of June 30, 2018 or December 31, 2017. This line of credit is scheduled to expire on November 30, 2018.