Acquisitions (CGC Technology Limited) (Details) - CGC - USD ($)	Jul. 31, 2020	Jan. 27, 2020
Business Acquisition [Line Items]
Aggregate purchase price	$ 23,650,000	$ 23,650,000
Payable in cash	12,075,000	12,075,000
Aggregate purchase price - settled with issuance of common stock	11,575,000	$ 11,575,000
Aggregate purchase price - settled with issuance of common stock (in shares)		323,504
Weighted average stock price (in dollars per share)		$ 35.78
Consideration transferred, net of cash acquired		$ 22,740,000
Cash acquired	$ 160,000	160,000
Payable upon the first anniversary of the closing		$ 750,000