Securities Available for Sale - Investments Classified by Contractual Maturity Date (Detail) $ in Thousands	Mar. 31, 2017 USD ($)
Available-for-sale Securities, Debt Maturities, Amortized Cost
Within 1 year	$ 2,237
After 1 year through 5 years	12,621
After 5 years through 10 years	5,883
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Amortized Cost Basis, Total	20,741
Mortgage-backed securities	46,778
Available-for-sale Debt Securities, Amortized Cost Basis, Total	67,519
Available-for-sale Securities, Debt Maturities, Fair Value
Within 1 year	2,259
After 1 year through 5 years	12,828
After 5 years through 10 years	6,019
Available-for-sale Securities, Debt Maturities, Single Maturity Date, Fair Value Total	21,106
Mortgage-backed securities	45,799
Available-for-sale Securities, Debt Securities, Fair Value Total	$ 66,905

This item represents the cost of debt securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

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Amount after adjustments of available-for-sale debt securities at cost, maturing in the second fiscal year through the fifth fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings less cumulative-effect adjustments, and fair value hedge accounting adjustments. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Fair value of investment in available-for-sale debt securities with a single maturity date.

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