Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jun. 30, 2019
Income Taxes [Line Items]
Income tax expense (benefit), continuing operations, adjustment of deferred tax (asset) liability			$ 11,500
Stockholders' equity, effects of tax law changes				$ 0
Earliest Tax Year | Federal
Income Taxes [Line Items]
Open tax year		2016
Earliest Tax Year | State
Income Taxes [Line Items]
Open tax year		2016
Metropolitan
Income Taxes [Line Items]
Operating loss carryforwards		$ 84,000
Reliance Bancshares, Inc.
Income Taxes [Line Items]
Operating loss carryforwards					$ 52,100
Retained Earnings
Income Taxes [Line Items]
Stockholders' equity, effects of tax law changes				3,016
Retained Earnings | New Accounting Pronouncement, Early Adoption, Effect | Accounting Standards Update 2018-02
Income Taxes [Line Items]
Stockholders' equity, effects of tax law changes	$ 3,000
AOCI
Income Taxes [Line Items]
Stockholders' equity, effects of tax law changes				$ (3,016)
AOCI | New Accounting Pronouncement, Early Adoption, Effect | Accounting Standards Update 2018-02
Income Taxes [Line Items]
Stockholders' equity, effects of tax law changes	$ (3,000)