Leasing Arrangements (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Weighted average lease term	8 years
Operating lease, weighted average discount rate	5.58%
Operating lease expenses	$ 12,582	$ 11,572	$ 7,599
Variable lease expenses	1,289
Operating lease payments	12,934
Non-cash transactions recognize to operating lease right-of-use assets and operating lease liabilities	$ 3,679
Minimum [Member]
Lease term	1 month
Maximum [Member]
Lease term	12 years