Income Taxes (Narrative) (Details) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 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%	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	$ 2,500,000		$ 2,500,000		2,600,000
Unrecognized Tax Benefits	$ 0		$ 0		$ 0
Effective tax rate	32.70%	32.60%	33.20%	32.40%