Tax Cuts and Jobs Act of 2017, Income Tax Expense (Benefit)

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- Definition

Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of increase in valuation and qualifying accounts and reserves from charge to cost and expense.

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Income Taxes (Operating Loss Carryforwards, Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Mar. 31, 2018
Operating Loss Carryforwards [Line Items]
Cumulative effect from change in accounting principle (Note 12)		$ 1,082,924
Deferred tax asset, net of related valuation allowance				$ 17,000,000.0
Valuation allowance	$ 17,382,052	15,632,235		15,900,000
Net tax benefit		100,000
Valuation allowance for deferred tax assets:
Operating Loss Carryforwards [Line Items]
Charged to costs and expenses	1,749,817	(665,039)	$ 203,003
Retained earnings
Operating Loss Carryforwards [Line Items]
Cumulative effect from change in accounting principle (Note 12)		$ 1,082,924
Retained earnings \| Accounting Standards Update 2016-09
Operating Loss Carryforwards [Line Items]
Cumulative effect from change in accounting principle (Note 12)				1,100,000
Federal
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	55,606,487
State
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	$ 59,387,026
Exercise of NonQualified Stock Options \| Federal
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards				$ 44,100,000