Summary of Significant Accounting Policies (Details) - Schedule of revenue categories - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Cinema Equipment Business [Member]
Cinema Equipment Business:
Total Cinema Equipment Business revenue	$ 3,253	$ 643	$ 9,484	$ 1,248
Content & Entertainment Business [Member]
Content & Entertainment Business:
Total Content & Entertainment Business revenue	6,850	6,536	15,634	11,952
Phase I Deployment [Member] | Cinema Equipment Business [Member]
Cinema Equipment Business:
Total Cinema Equipment Business revenue	148	112	239	143
Phase II Deployment [Member] | Cinema Equipment Business [Member]
Cinema Equipment Business:
Total Cinema Equipment Business revenue	375	351	761	749
Services [Member] | Cinema Equipment Business [Member]
Cinema Equipment Business:
Total Cinema Equipment Business revenue	486	165	665	265
Digital System Sales [Member] | Cinema Equipment Business [Member]
Cinema Equipment Business:
Total Cinema Equipment Business revenue	2,244	15	7,819	91
Base Distribution Business [Member] | Content & Entertainment Business [Member]
Content & Entertainment Business:
Total Content & Entertainment Business revenue	922	2,931	2,700	5,088
OTT Streaming and Digital [Member] | Content & Entertainment Business [Member]
Content & Entertainment Business:
Total Content & Entertainment Business revenue	$ 5,928	$ 3,608	$ 12,934	$ 6,864