Loans Receivable, Net (Details Textual)	12 Months Ended
Dec. 31, 2019 USD ($) portfolio_segment	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Loans Receivable
Number of segments in the Company's loan portfolio \| portfolio_segment	3
Loans pledged as collateral	$ 5,228,136,000
Percentage of consolidated stockholders equity exceeding which no borrower had outstanding loans or commitments	10.00%
Loans serviced for others	$ 185,897,000	$ 181,281,000
Aggregate amount of loans outstanding to related parties	57,825,000	59,528,000
New loans to related parties	17,504,000
Repayments of loans by related parties	19,207,000
TDR With Pre Modification Loan Balance for Which Oreo Was Received	2,992,000	6,793,000	$ 5,987,000
Consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings are in process	1,744,000	350,000
OREO Secured by Residential Real Estate	1,504,000	698,000
Additional unfunded commitments on TDRs	3,933,000	5,335,000
Charge-offs on TDRs	$ 709,000	$ 1,685,000	$ 2,984,000

Additional outstanding commitments on TDRs.

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Number of portfolio segments in the company's total financing receivables.

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Percentage of consolidated stockholders equity exceeding which no borrower had outstanding loans or commitments.

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Real Estate Acquired Through Foreclosure, Secured by Residential Real Estate

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TDR with pre modification loan balance, for which OREO was received.

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Reflects the amount of the write-down related to a troubled debt restructuring.

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For an unclassified balance sheet, reflects the carrying amount of unpaid loan amounts due from related parties at the balance sheet date.

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Reflects the amount of new advances made to related parties in the form of loan and lease receivables.

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Amount of cash inflow from related parties which reduce the amount of loans and leases receivable due from related parties.

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Carrying amount as of the balance sheet date of loans that have been pledged as collateral for borrowings. If the secured party has the right by contract or custom to sell or re-pledge the collateral, then the debtor reclassifies that asset and report that asset in its statement of financial position separately from other assets not so encumbered.

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Recorded investment of consumer mortgage loan receivables secured by residential real estate properties for which formal foreclosure proceedings are in process.

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Amortized amount of contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer.

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