Leases (Details Textual) - USD ($) $ in Thousands	Jun. 30, 2019	Jan. 01, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right-of-use lease liabilities	$ 6,823
Right-of-use assets and liabilities discounted present value	6,946
Accounting Standards Update 2016-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right-of-use lease liabilities		$ 7,700
Right-of-use assets and liabilities discounted present value	$ 6,500	$ 7,700