Income Taxes (Narrative) (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016	Dec. 31, 2012
Income Taxes [Abstract]
Proceeds from sale of common stock				$ 22,500,000
Net operating loss carry forwards			$ 23,059,000
Alternative minimum tax credit carryforwards			50,000
Carryforwards utilize limit before the stock offering closed			163,000
Unutilized operating loss carryforwards that will expire			20,520,000
Reduced deferred tax assets and valuation allowance			6,977,000
Statutory income tax rate	34.00%	34.00%
Additional bad debt deductions provided by Federal income tax laws			2,250,000
Deferred tax liability not recorded			765,000
Deferred tax asset	$ 2,300,000		2,600,000
Unrecognized Tax Benefits	$ 0		$ 0
Effective tax rate	34.00%	32.20%