Goodwill and Intangible Assets (Details Textual) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 302,000	$ 316,000
Estimated amortization expense for the remainder of 2019	900,000
Estimated amortization expense for 2020	1,200,000
Estimated amortization expense for 2021	1,200,000
Estimated amortization expense for 2022	1,200,000
Estimated amortization expense for 2023	1,200,000
Cost of revenue
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	93,000	93,000
Selling, general and administrative
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 200,000	$ 200,000