Stock-Based Compensation (Details Textual) - USD ($) $ / shares in Units, $ in Thousands			12 Months Ended
	Jan. 09, 2020	Oct. 03, 2014	Dec. 31, 2020	Dec. 31, 2019	Jan. 01, 2021	Jul. 23, 2020	Aug. 10, 2017
Stock Based Compensation (Textual)
Shares available for issuance	2,627,533
Common stock, shares authorized			100,000,000	100,000,000
Common stock, shares issued			11,211,840	2,627,533
Stock Option [Member]
Stock Based Compensation (Textual)
Grant date fair value			$ 20.60	$ 7.29
Weighted average grant date fair value				6.55
Weighted average remaining amortization period			3 years
Unamortized value of stock			$ 9,973
Incremental value			$ 501
Restricted Stock Units (RSUs) [Member]
Stock Based Compensation (Textual)
Common stock, shares issued			20,870
Grant date fair value			$ 29.95
Unamortized value of RSUs			$ 6,299
Number of RSUs			132,709	5,245
Weighted average remaining amortization period			1 year 9 months 22 days
Vested shares						5,687
Amount of charges			$ 152
Restricted Stock Units (RSUs) [Member] | Directors One [Member]
Stock Based Compensation (Textual)
Issuance of common stock			$ 316,000
Vested options, percentage			12.50%
Grant date fair value			$ 9,480
Vested shares			254,000
Restricted Stock Units (RSUs) [Member] | Directors Two [Member]
Stock Based Compensation (Textual)
Vested options, percentage			50.00%
Vested shares			62,000
Restricted Stock Units (RSUs) [Member] | Consultant [Member]
Stock Based Compensation (Textual)
Sale of stock, description				The Board of Directors granted of 5,245 RSUs to a consultant. The RSUs were granted under the Company's 2017 Equity Incentive Plan. The RSUs vested in five equal installments of 1,049 units on the 15th and 30th of each month, beginning on October 30, 2019. The grant date fair value of this RSU was $36.
Restricted Stock Units (RSUs) [Member] | Employees [Member]
Stock Based Compensation (Textual)
Issuance of common stock			$ 163,325
Vested options, percentage			25.00%
Grant date fair value			$ 4,887
2014 Employee Stock Purchase Plan [Member]
Stock Based Compensation (Textual)
Sale of stock, description		The number of shares increases each January 1, commencing on January 1, 2015 and ending on (and including) January 1, 2024, by an amount equal to the lesser of one percent of the outstanding shares as of the end of the immediately preceding fiscal year, 7,025 shares or any lower amount determined by the Company’s Board of Directors prior to each such January 1st.
Common stock, shares authorized		3,513	18,012
Common stock, shares issued			13,340
2014 Employee Stock Purchase Plan [Member] | Subsequent Event [Member] | Minimum [Member]
Stock Based Compensation (Textual)
Common stock, shares authorized					7,025
2014 Employee Stock Purchase Plan [Member] | Subsequent Event [Member] | Maximum [Member]
Stock Based Compensation (Textual)
Common stock, shares authorized					25,037
2014 Equity Incentive Plan [Member]
Stock Based Compensation (Textual)
Shares available for issuance			227,850
Sale of stock, description	The number of shares available for issuance under the Amended 2014 Plan increased by 900,002 shares from 148,298 shares to 1,048,300 shares on January 1, 2020.
2014 Equity Incentive Plan [Member] | Board Of Directors [Member]
Stock Based Compensation (Textual)
Issuance of common stock			$ 484,850
Grant date fair value			$ 10,867
Vest period			10 years
2014 Equity Incentive Plan [Member] | Minimum [Member] | Board Of Directors [Member]
Stock Based Compensation (Textual)
Exercise price			$ 17.84
2014 Equity Incentive Plan [Member] | Maximum [Member] | Board Of Directors [Member]
Stock Based Compensation (Textual)
Exercise price			$ 51.12
2014 Equity Incentive Plan [Member] | Subsequent Event [Member] | Minimum [Member]
Stock Based Compensation (Textual)
Common stock, shares authorized					812,889
2014 Equity Incentive Plan [Member] | Subsequent Event [Member] | Maximum [Member]
Stock Based Compensation (Textual)
Common stock, shares authorized					1,861,189
2020 Inducement Plan [Member]
Stock Based Compensation (Textual)
Issuance of common stock			$ 600,000
Shares available for issuance			460,650
2017 Equity Incentive Plan [Member]
Stock Based Compensation (Textual)
Shares available for issuance							2,000,000
2017 Equity Incentive Plan [Member] | Board Of Directors [Member]
Stock Based Compensation (Textual)
Issuance of common stock				$ 47,114
Grant date fair value				$ 317
Exercise price				$ 9.18
Vest period				10 years