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Investment Securities (Details 1) - USD ($) $ in Thousands	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
Total		$ 4,565	$ 4,581
Amortized Cost [Member]
Due in one year or less	$ 0
Due after one year through five years	0
Due after five years through ten years	2,349
Government-sponsored enterprises residential mortgage-backed securities	2,260
Total	4,609
Fair Value [Member]
Total	4,565
Due in one year or less	0
Due after one year through five years	0
Due after five years through ten years	2,312
Government-sponsored enterprises residential mortgage-backed securities	$ 2,253