Business Combinations - Fair Value of the Assets Purchased, Including Goodwill and Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Aug. 21, 2020	Mar. 13, 2020
Assets:
Goodwill	$ 221,176	$ 221,176
Fourth Street Banking Company
Assets:
Cash			$ 38,082
Investment securities			3,498
Loans			303,434
Bank premises and equipment			9,480
Core deposit intangibles			1,310
Goodwill			9,030
Other assets			7,088
Total assets			371,922
Liabilities:
Deposits			329,662
Other liabilities			543
Total liabilities			$ 330,205
First Bank of the Palm Beaches
Assets:
Cash				$ 34,749
Investment securities				447
Loans				146,777
Bank premises and equipment				6,086
Core deposit intangibles				819
Goodwill				6,861
Other assets				1,305
Total assets				197,044
Liabilities:
Deposits				173,741
Other liabilities				1,406
Total liabilities				175,147
First Bank of the Palm Beaches | Initially Measured
Assets:
Cash				34,749
Investment securities				447
Loans				146,839
Bank premises and equipment				6,086
Core deposit intangibles				819
Goodwill				6,799
Other assets				1,285
Total assets				197,024
Liabilities:
Deposits				173,741
Other liabilities				1,386
Total liabilities				175,127
First Bank of the Palm Beaches | Measurement Period Adjustments
Assets:
Cash				0
Investment securities				0
Loans				(62)
Bank premises and equipment				0
Core deposit intangibles				0
Goodwill				62
Other assets				20
Total assets				20
Liabilities:
Deposits				0
Other liabilities				20
Total liabilities				$ 20