Investments in Affiliated Companies - Summary Statements of Stockholders' Equity (Detail) - Majority-Owned Subsidiary, Unconsolidated [Member] - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Schedule of Equity Method Investments [Line Items]
Beginning balances			$ 10,310
Net income	$ 97	$ 89	194	$ 174
Dividends:
Trust preferred securities			(188)
Common paid to HopFed Bancorp, Inc.			(6)
Ending balances	10,310		10,310
Trust Preferred Securities [Member]
Schedule of Equity Method Investments [Line Items]
Beginning balances			10,000
Dividends:
Ending balances	10,000		10,000
Common Stock [Member]
Schedule of Equity Method Investments [Line Items]
Beginning balances			310
Dividends:
Ending balances	$ 310		310
Retained Earnings [Member]
Schedule of Equity Method Investments [Line Items]
Net income			194
Dividends:
Trust preferred securities			(188)
Common paid to HopFed Bancorp, Inc.			$ (6)