Acquisitions - Webscan, Inc. Narrative (Details) - USD ($)		1 Months Ended
	Dec. 09, 2016	Jan. 31, 2017
Webscan, Inc. [Member]
Business Acquisition [Line Items]
Purchase price	$ 3,176,000
Cash paid in purchase price	3,000,000	$ 176,000
Tax deductible goodwill	$ 287,000
Customer Relationships [Member]
Business Acquisition [Line Items]
Intangible assets, useful life	7 years
Technology-Based Intangible Assets [Member] | Webscan, Inc. [Member]
Business Acquisition [Line Items]
Intangible assets, useful life	5 years