Loans Receivable - Mortgage Banking Activities (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Receivables [Abstract]
Loans held for sale	$ 5,533	$ 1,555
One-to-four family residential
One-to-four family residential loans:
Originated	150,030	121,998	$ 144,066
Sold	68,238	76,834	113,786
Gains on sales of loans, net	2,159	2,403	$ 3,412
Contractual amounts of commitments to sell and fund with off-balance sheet risk:
Commitments to sell mortgage loans	8,815	3,910
Commitments to fund mortgage loans (at interest rates approximating market rates) for portfolio or for sale:
Fixed rate	15,509	6,593
Variable or adjustable rate	3,111	1,008
Total commitments to fund mortgage loans	$ 18,620	$ 7,601

Commitments to Fund Mortgage Loans [Abstract]

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- Definition

Contractual Amounts of Commitments [Abstract]

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Loans and Leases Receivable, Total Commitments to Purchase or Sell

+ References

No definition available.

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The gains (losses) included in earnings that represent the difference between the sale price and the carrying value of loans made to finance real estate acquisitions. This element refers to the gain (loss) and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

+ References

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Reflects the amount of cash required to fully fund agreements to provide advances to borrowers and lessees at stated interest rates.

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Reflects the carrying amount of loans and leases for which agreements to acquire or dispose exist.

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Reflects the amount of cash required to fully fund agreements to provide advances to borrowers and lessees at interest rates that increase or decrease depending on certain facts or circumstances.

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Amount, after allowance for bad debt, of loan receivables held-for-sale that are not part of a disposal group. Excludes loans and leases covered under loss sharing agreements and loans classified as debt securities.

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The amount of cash paid for the origination of mortgages that are held for sale.

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The cash inflow from sales of loans that are secured with real estate mortgages and are held with the intention to resell in the near future.

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