Derivative Financial Instruments (AOCI Related to Cash Flow Hedges) (Narrative) (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($)
Derivative Instruments, Gain (Loss) [Line Items]
Remaining unamortized gain (loss) on termination of cash flow hedges	$ 306
Price Risk Derivative [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Remaining unamortized gain (loss)	5,800
Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Estimate of amount to be reclassified from AOCL	$ (7,200)
Maximum Length of Time Hedged in Cash Flow Hedge	2 years 7 months 6 days
Remaining unamortized gain (loss)	$ 650