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Fair Value, Measurement on Recurring and Nonrecurring Basis (Details) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) item	Mar. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Financial assets:
Impaired loans, net			$ 220,706		$ 130,726
Allowance for impaired loan losses			106,340		71,069
Loans and Leases Receivable, Allowance	$ 71,069	$ 71,069	152,811	$ 142,252	71,069
Impairment loss on real estate owned	$ 1,000	$ 1,000
Non-financial assets:
Real Estate Investment Property, Net			$ 12,990		13,220
Nine impaired loans
Financial assets:
Number of impaired loans | item			10
Loans and Leases Receivable, Allowance			$ 106,300
Real Estate Owned
Non-financial assets:
Real Estate Investment Property, Net			12,990		13,220
Carrying Value
Financial assets:
Derivative financial instruments			2,214		1,435
Financial liabilities:
Derivative financial instruments			219		3,097
Carrying Value | Nine impaired loans
Financial assets:
Aggregate carrying value of impaired loans before loan loss reserves			220,700
Fair Value
Financial assets:
Derivative financial instruments			2,214		1,435
Financial liabilities:
Derivative financial instruments			219		$ 3,097
Recurring basis | Carrying Value
Financial assets:
Derivative financial instruments			2,214
Financial liabilities:
Derivative financial instruments			219
Recurring basis | Fair Value
Financial assets:
Derivative financial instruments			2,214
Financial liabilities:
Derivative financial instruments			219
Nonrecurring basis | Carrying Value
Financial assets:
Impaired loans, net			114,366
Nonrecurring basis | Fair Value
Financial assets:
Impaired loans, net			114,366
Level 2 | Recurring basis
Financial assets:
Derivative financial instruments			1,665
Financial liabilities:
Derivative financial instruments			219
Level 3 | Recurring basis
Financial assets:
Derivative financial instruments			549
Level 3 | Nonrecurring basis
Financial assets:
Impaired loans, net			$ 114,366

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