Income Taxes, Federal and State NOL Carryforwards (Details) - USD ($)	6 Months Ended
	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017
Federal [Member]
NOL Carryforwards [Abstract]
Operating loss carryforwards, amount			$ 44,600,000
Federal [Member] | Tax Year 2006 [Member]
NOL Carryforwards [Abstract]
Tax year originating	2006
Tax year expiring	2026
Operating loss carryforwards, amount			500,000
Federal [Member] | Tax Year 2007 [Member]
NOL Carryforwards [Abstract]
Tax year originating	2007
Tax year expiring	2027
Operating loss carryforwards, amount			12,700,000
Federal [Member] | Tax Year 2008 [Member]
NOL Carryforwards [Abstract]
Tax year originating	2008
Tax year expiring	2028
Operating loss carryforwards, amount			4,600,000
Federal [Member] | Tax Year 2009 [Member]
NOL Carryforwards [Abstract]
Tax year originating	2009
Tax year expiring	2029
Operating loss carryforwards, amount			2,400,000
Federal [Member] | Tax Year 2010 [Member]
NOL Carryforwards [Abstract]
Tax year originating	2010
Tax year expiring	2030
Operating loss carryforwards, amount			1,900,000
Federal [Member] | Tax Year 2011 [Member]
NOL Carryforwards [Abstract]
Tax year originating	2011
Tax year expiring	2031
Operating loss carryforwards, amount			1,900,000
Federal [Member] | Tax Year 2013 [Member]
NOL Carryforwards [Abstract]
Tax year originating	2013
Tax year expiring	2033
Operating loss carryforwards, amount			3,700,000
Federal [Member] | Tax Year 2014 [Member]
NOL Carryforwards [Abstract]
Tax year originating	2014
Tax year expiring	2034
Operating loss carryforwards, amount			4,900,000
Federal [Member] | Tax Year 2015 [Member]
NOL Carryforwards [Abstract]
Tax year originating	2015
Tax year expiring	2035
Operating loss carryforwards, amount			4,200,000
Federal [Member] | Tax Year 2016 [Member]
NOL Carryforwards [Abstract]
Tax year originating	2016
Tax year expiring	2036
Operating loss carryforwards, amount			3,400,000
Federal [Member] | Tax Year 2017 [Member]
NOL Carryforwards [Abstract]
Tax year originating	2017
Tax year expiring	2037
Operating loss carryforwards, amount			$ 4,400,000
State [Member]
NOL Carryforwards [Abstract]
Operating loss carryforwards, amount		$ 16,800,000
State [Member] | Tax Year 2011 [Member]
NOL Carryforwards [Abstract]
Tax year originating	2011
Tax year expiring	2031
Operating loss carryforwards, amount		1,800,000
State [Member] | Tax Year 2013 [Member]
NOL Carryforwards [Abstract]
Tax year originating	2013
Tax year expiring	2033
Operating loss carryforwards, amount		2,700,000
State [Member] | Tax Year 2014 [Member]
NOL Carryforwards [Abstract]
Tax year originating	2014
Tax year expiring	2034
Operating loss carryforwards, amount		4,200,000
State [Member] | Tax Year 2015 [Member]
NOL Carryforwards [Abstract]
Tax year originating	2015
Tax year expiring	2035
Operating loss carryforwards, amount		4,100,000
State [Member] | Tax Year 2016 [Member]
NOL Carryforwards [Abstract]
Tax year originating	2016
Tax year expiring	2036
Operating loss carryforwards, amount		2,800,000
State [Member] | Tax Year 2017 [Member]
NOL Carryforwards [Abstract]
Tax year originating	2017
Tax year expiring	2037
Operating loss carryforwards, amount		$ 1,200,000