Fair Value of Assets and Liabilities - Estimated Fair Values of Financial Instruments (Detail) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Financial Assets:
Securities available for sale	$ 172,168	$ 170,804
Amortized Cost [Member]
Financial Assets:
Cash and due from banks	35,052	36,339
Interest-bearing deposits in banks	12,364	15,711
Securities available for sale	172,168	4,428
Federal Home Loan Bank stock	4,428	170,804
Loans held for sale	742	1,248
Loans receivable	666,250	658,782
Accrued interest receivable	3,666	3,503
Financial Liabilities:
Deposits	741,827	739,837
Advances from borrowers for taxes and insurance	914	1,279
Advances from Federal Home Loan Bank	26,000	33,000
Repurchase agreements	59,046	53,011
Subordinated debentures	10,310	10,310
Estimated Fair Value [Member]
Financial Assets:
Cash and due from banks	35,052	36,339
Interest-bearing deposits in banks	12,364	15,711
Securities available for sale	172,168	4,428
Federal Home Loan Bank stock	4,428	170,804
Loans held for sale	742	1,248
Loans receivable	636,933	627,956
Accrued interest receivable	3,666	3,503
Financial Liabilities:
Deposits	741,290	739,573
Advances from borrowers for taxes and insurance	914	1,279
Advances from Federal Home Loan Bank	25,873	32,830
Repurchase agreements	59,046	53,011
Subordinated debentures	10,310	10,310
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial Assets:
Cash and due from banks	35,052	36,339
Interest-bearing deposits in banks	12,364	15,711
Securities available for sale	4,929
Significant Other Observable Inputs (Level 2) [Member]
Financial Assets:
Securities available for sale	167,235
Federal Home Loan Bank stock		170,804
Loans held for sale	742	1,248
Accrued interest receivable	3,666
Financial Liabilities:
Deposits	741,290	739,573
Advances from borrowers for taxes and insurance	914	1,279
Advances from Federal Home Loan Bank	25,873	32,830
Repurchase agreements	59,046	53,011
Subordinated debentures	10,310
Significant Unobservable Inputs (Level 3) [Member]
Financial Assets:
Securities available for sale		4,428
Federal Home Loan Bank stock	4,428
Loans receivable	$ 636,933	627,956
Accrued interest receivable		3,503
Financial Liabilities:
Subordinated debentures		$ 10,310

HOPFED BANCORP INC 10-Q