Stockholders' Equity (Details Textual) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Feb. 12, 2020
Stockholders' Equity Attributable to Parent [Abstract]
Treasury Shares Surrendered	$ 8,505,000	$ 5,369,000	$ 8,449,000
Treasury Stock, Shares, Acquired	199,018	213,578	218,531
Treasury Stock Acquired, Average Cost Per Share	$ 42.73	$ 25.14	$ 38.66
Stock Repurchase Program, Authorized Amount				$ 200,000,000