Income Taxes - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Operating Loss Carryforwards [Line Items]
Decrease in income tax expense and deferred tax liabilities	$ (800,000)	$ (53,400,000)
Decrease in net deferred tax liabilities	(800,000)	(53,400,000)
One-time non-cash tax benefit related to tax rate increase	53,400,000
State net operating loss carry-forwards, net of federal tax	12,612,000	14,983,000
Valuation allowance	862,000	862,000
Federal and state net operating losses	54,400,000
Unrecognized tax benefits	0	$ 0
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Federal and state net operating losses	$ 39,900,000