Summary of Significant Accounting Policies - Schedule of Adoption of Accounting Pronouncements on Accompanying Condensed Consolidated Balance Sheet (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jan. 02, 2019	Dec. 31, 2018
Operating lease right-of-use assets	$ 4,960	$ 5,305
Operating lease liabilities	3,566	3,948
Other current liabilities	$ 2,550	1,748	316
Accounts payable and accrued expenses		6,433	$ 6,508
Adjustments Due to the Adoption of ASC 842 [Member]
Operating lease right-of-use assets		5,305
Operating lease liabilities		3,948
Other current liabilities		1,432
Accounts payable and accrued expenses		$ (75)