Income Taxes (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount	$ (244,104)	$ 132,917	$ 132,997
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount	(77,934)	43,575	45,945
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Impairment Losses, Amount	407,232	0	0
Effective Income Tax Rate Reconciliation, Tax Exempt Income, Amount	(5,202)	(8,092)	(9,810)
Income Tax Reconciliation Change In Cash Surrender Value Of Life Insurance	(1,309)	(1,298)	(1,742)
Income Tax Credits and Adjustments	(4,605)	(3,217)	(2,025)
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Payment Arrangement, Amount	2,830	4,430	2,552
Nondeductible acquisition-related expense	0	0	71
Nondeductible FDIC Insurance Premiums	2,383	1,302	1,664
Deferred Tax Assets, Tax Deferred Expense	(187)	941	(169)
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount	(5,288)	(32,036)	(15,721)
Deferred Tax Asset, Capital Loss Carryforward, Expired	0	3,136	8,097
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount	0	0	1,859
Effective Income Tax Rate Reconciliation, State Income Tax Refunds, Amount	(2,554)	0	0
Effective Income Tax Rate Reconciliation, Tax Settlement, State and Local, Amount	4,217	19,138	3,736
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount	(306)	3,508	524
Income Tax Expense (Benefit), Continuing Operations, Discontinued Operations	$ 75,173	$ 164,304	$ 167,978