Goodwill and Other Intangible Assets (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Goodwill and Other Intangible Assets (Textual)
Goodwill	$ 223,697	$ 223,368
Amortization expense	13,846	$ 9,135	$ 7,422
Estimated future amortization expense
Estimated future amortization expense 2020	15,714
Estimated future amortization expense 2021	15,218
Estimated future amortization expense 2022	14,564
Estimated future amortization expense 2023	12,573
Estimated future amortization expense 2024	8,486
Estimated future amortization expense after 2024	$ 15,554