Federal and State Income Taxes (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Income Tax Uncertainties
Unrecognized income tax benefit	$ 0	$ 0
Accrued liabilities for the payment of interest or penalties	0	0
Valuation Allowance
Deferred tax valuation allowance	0	$ 0
Federal and State Income Taxes
Base year reserve for bad debts	3,600,000
Federal
Operating Loss and Tax Credit Carryforwards
Operating Loss Carryforwards, Amount	11,934,000
Tax Credit Carryforward, Amount	$ 411,000
Federal | Earliest Tax Year
Operating Loss and Tax Credit Carryforwards
Operating Loss Carryforwards, Expiration Date	Dec. 31, 2030
Federal | Latest Tax Year
Operating Loss and Tax Credit Carryforwards
Operating Loss Carryforwards, Expiration Date	Dec. 31, 2035
Colorado
Operating Loss and Tax Credit Carryforwards
Operating Loss Carryforwards, Amount	$ 14,986,000
Colorado | Earliest Tax Year
Operating Loss and Tax Credit Carryforwards
Operating Loss Carryforwards, Expiration Date	Dec. 31, 2031
Colorado | Latest Tax Year
Operating Loss and Tax Credit Carryforwards
Operating Loss Carryforwards, Expiration Date	Dec. 31, 2032