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Related Party Transactions (Details) - USD ($)				1 Months Ended				12 Months Ended
	Oct. 22, 2020	May 29, 2020	Nov. 09, 2019	Sep. 30, 2019	Feb. 28, 2019	Oct. 31, 2017	Sep. 30, 2015	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2015	Oct. 21, 2020	Feb. 13, 2019
Related Party Transactions
Employee options granted to purchase shares of common stock (in shares)								2,850,000	100,000
Options granted, weighted average exercise price (in dollars per share)								$ 3.49	$ 19.28
Proceeds from exercise of stock options, net of share settlement (in shares)								75,000	300,000
Share price (in dollars per share)												$ 7.80
Significant Shareholder | Azzuro
Related Party Transactions
Number of shares sold (in shares)	50,000
Azzurro Capital, Inc.
Related Party Transactions
Percent of outstanding shares								40.00%
February 2019 Plan
Related Party Transactions
Stock repurchased program authorized number of shares (in shares)													100,000
Aggregate purchase price													$ 1,600,000
Stock repurchase program discount on purchase price													5.00%
Stock repurchased during period (in shares)					100,000
Stock repurchased during period, value					$ 1,600,000
November 2019 Plan
Related Party Transactions
Stock repurchase program discount on purchase price			4.40%
Stock repurchased during period (in shares)			200,000
Stock repurchased during period, value			$ 2,000,000.0
WeekenGO | Equity Method Investee
Related Party Transactions
Future expected revenue										$ 2,100,000
Purchases from related party								$ 384,000	$ 1,200,000
Weekengo
Related Party Transactions
Remaining amount								$ 200,000
Stock Options | Employee Options 2015 | Mr. Ralph Bartel
Related Party Transactions
Employee options granted to purchase shares of common stock (in shares)							400,000
Options granted, weighted average exercise price (in dollars per share)							$ 8.07
Stock Options | October 2017 Plan | Mr. Ralph Bartel
Related Party Transactions
Employee options granted to purchase shares of common stock (in shares)						400,000					150,000
Options granted, weighted average exercise price (in dollars per share)						$ 6.95
Proceeds from exercise of stock options, net of share settlement (in shares)									250,000
Stock Options | September 2019 Plan
Related Party Transactions
Employee options granted to purchase shares of common stock (in shares)				300,000
Options granted, weighted average exercise price (in dollars per share)				$ 10.79
Options vest and become exercisable annually (in shares)				75,000
Stock Options | September 2019 Plan | Mr. Ralph Bartel
Related Party Transactions
Options granted, weighted average exercise price (in dollars per share)				$ 10.79
Options vest and become exercisable annually (in shares)				400,000
Stock Options | May 2020 Plan
Related Party Transactions
Employee options granted to purchase shares of common stock (in shares)								100,000
Stock Options | May 2020 Plan | Mr. Ralph Bartel
Related Party Transactions
Employee options granted to purchase shares of common stock (in shares)		800,000							1,900,000
Options granted, weighted average exercise price (in dollars per share)		$ 3.49

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