Consolidated Statements of Stockholders' Equity (Parentheticals) (Unaudited) - shares	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Statement Of Stockholders Equity [Abstract]
Issuance of shares related to settlement of convertible notes	138,509
Receipt of shares related to settlement of convertible note hedge transaction	25,957
Purchase of shares of treasury stock	172,887		1,234,144
Treasury shares withheld for payment of taxes	152	1,267	154,881	130,134
Issuance of shares of restricted stock	18,056	19,332	381,606	357,087
Issuance of shares related to settlement of warrant				1,280,450