Income Taxes - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating Loss Carryforwards [Line Items]
Income tax benefit	$ 111,000	$ 1,063,000	$ 4,712,000
Tax Cuts and Jobs Act, income tax expense			3,500,000
Proceeds from income tax refunds	1,800,000
Income taxes receivable	1,800,000
Reduction in deferred tax assets and corresponding valuation allowance	19,700,000
Refund claimed for taxes previously paid	4,800,000
Minimum
Operating Loss Carryforwards [Line Items]
Estimate of unrecognized tax benefits that may be realized over the next twelve months	0
Maximum
Operating Loss Carryforwards [Line Items]
Estimate of unrecognized tax benefits that may be realized over the next twelve months	4,800,000
Domestic Tax Authority
Operating Loss Carryforwards [Line Items]
Federal net operating loss carryforwards	$ 369,700,000
State and Local Jurisdiction
Operating Loss Carryforwards [Line Items]
Settlement of state franchise tax audit			$ 1,400,000