Summary of Significant Accounting Policies - Schedule of Adoption of Accounting Pronouncements on Accompanying Condensed Consolidated Balance Sheet (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jan. 02, 2019	Dec. 31, 2018
Operating lease right-of-use assets	$ 5,454	$ 5,305
Accounts payable and accrued expenses		6,433	6,508
Other current liabilities	2,646	1,748	316
Operating lease liabilities	$ 3,833	3,948
Adjustments Due to the Adoption of ASC 842 [Member]
Operating lease right-of-use assets		5,305
Accounts payable and accrued expenses		(75)
Other current liabilities		1,432
Operating lease liabilities		$ 3,948