Stock-based Compensation Expense Activity in Non-Performance Based Restricted Stock Awards (Details) - Restricted Stock And Restricted Stock Units	12 Months Ended
	Dec. 31, 2021 $ / shares shares
Shares
Nonvested, beginning of period (in shares) | shares	326,744
Granted (in shares) | shares	66,432
Vested (in shares) | shares	(69,937)
Forfeited (in shares) | shares	(13,985)
Nonvested, end of period (in shares) | shares	309,254
Weighted Average Grant Date Fair Value
Nonvested, beginning of period (in dollars per share) | $ / shares	$ 79.48
Granted (in dollars per share) | $ / shares	159.89
Vested (in dollars per share) | $ / shares	93.61
Forfeited (in dollars per share) | $ / shares	101.98
Nonvested, end of period (in dollars per share) | $ / shares	$ 92.52