Income Taxes - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Sep. 30, 2019	Dec. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2016
Operating Loss Carryforwards [Line Items]
Charitable contribution carryforward			$ 20,202
Valuation allowance			11,905	$ 12,420
Valuation allowance, deferred tax asset, increase (decrease)			(515)
Valuation allowance, deferred tax asset, increase, charitable contributions			354
Valuation allowance, deferred tax asset, decrease, charitable contributions benefits subject to expiration			603
Valuation allowance, deferred tax asset, increase, other			266
Tax cuts and jobs act, net income tax		$ 2,700
Income tax benefit	$ 11,471
Income tax benefit, interest amount	$ 3,225
Unrecognized Tax Benefits		$ 21,077	235	$ 16,968	$ 25,062
Federal
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards			9,678
State
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards			$ 16,278