Business Description (Details)	Sep. 30, 2017 Patent
Finite-Lived Intangible Assets [Line Items]
Number of pending patent applications	50
Patents [Member] | U.S. [Member]
Finite-Lived Intangible Assets [Line Items]
Number of patents owned	49
Patents [Member] | Foreign [Member]
Finite-Lived Intangible Assets [Line Items]
Number of patents owned	69