Derivative Instruments (Effect of Derivatives on Consolidated Statements of Income) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Derivative Instruments, Gain (Loss) [Line Items]
Interest expense, net	[1]	$ 30,361	$ 35,227	$ 27,049
Designated as Hedging Instrument [Member] | Fair Value Hedging [Member] | Interest rate contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives designated in fair value hedging		(165)	(191)	413
Designated as Hedging Instrument [Member] | Fair Value Hedging [Member] | Interest rate contracts [Member] | Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives designated in fair value hedging	[2]		(191)	413
Designated as Hedging Instrument [Member] | Fair Value Hedging [Member] | Interest rate contracts [Member] | Debt Extinguishment [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivatives designated in fair value hedging		(165)
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Interest rate contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Loss recognized in other comprehensive income, net of tax		(19,824)	(3,062)	(145)
Designated as Hedging Instrument [Member] | Cash Flow Hedging [Member] | Interest rate contracts [Member] | Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Loss reclassified from accumulated other comprehensive loss	[2]	$ (1,384)	$ (647)	(149)
Derivatives not designated as Hedging Instrument [Member] | Lumber price contracts [Member] | Gain on Lumber Hedge [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Realized gain on lumber price swap				$ 1,088

[1] Bond discounts and deferred loan fees are reported within interest expense on the Consolidated Statements of Income

[2] ^{Realized gains and losses on interest rate contracts consist of net cash received or paid and interest accruals on the interest rate swaps during the periods. Net cash received or paid is included in the supplemental cash flow information within interest, net of amounts capitalized in the Consolidated Statements of Cash Flows}