Goodwill and Other Intangible Assets (Details Textual) - USD ($) $ in Thousands	3 Months Ended			12 Months Ended
	Mar. 31, 2017	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Weighted average useful life	5 years 2 months 5 days
Intangible asset amortization	$ 3,064	$ 3,176	$ 4,746
Aggregate amortization expense 2018	8,800
Aggregate amortization expense 2019	6,700
Aggregate amortization expense 2020	4,700
Aggregate amortization expense 2021	3,000
Aggregate amortization expense 2022	$ 1,700
Scenario, Forecast
Finite-Lived Intangible Assets [Line Items]
Intangible asset amortization				$ 11,500