Litigation Settlements and Contingencies (Details) $ in Millions			12 Months Ended
	Mar. 17, 2017 patent	Feb. 17, 2017 patent	Mar. 31, 2018 USD ($)
Godo Kaisha IP Bridge (IP Bridge) Patent Infringement [Member]
Loss Contingencies [Line Items]
Number of patents allegedly infringed upon		2
Anza Technology, Inc. Patent Infringement [Member]
Loss Contingencies [Line Items]
Number of patents allegedly infringed upon	3
Valley Forge [Member]
Loss Contingencies [Line Items]
Damages sought | $			$ 50.0