Financial Instruments and Concentration of Risk (Tables)

12 Months Ended

Dec. 31, 2012

Derivative Instrument Detail [Abstract]

Estimated Fair Value of Financial Instruments

Estimated fair values of our financial instruments are as follows:

(Dollars in thousands)

	2012				2011
	CARRYING AMOUNT		FAIR VALUE		CARRYING AMOUNT		FAIR VALUE
Cash and short-term investments (Level 1)	$	80,062	$	80,062	$	70,808	$	70,808
Net derivative asset related to interest rate swaps (Level 2)	2,952		2,952		2,409		2,409
Derivative asset related to lumber swap (Level 2)	—		—		480		480
Long-term debt (including current installments on long-term debt and fair value adjustments related to fair value swaps) (Level 2)	357,576		379,048		366,403		373,791

Fair Values of Derivative Instruments

The fair values of derivative instruments on our Consolidated Balance Sheets as of December 31 are as follows:

(Dollars in thousands)

	DERIVATIVE ASSETS
		2012		2011
	BALANCE SHEET LOCATION	FAIR VALUE		FAIR VALUE
Derivatives designated as hedging instruments:
Interest rate contracts	Other assets (non-current)	$	2,952	$	2,409
Total derivatives designated as hedging instruments		$	2,952	$	2,409
Derivative not designated as hedging instruments:
Lumber contracts	Other assets (current)	$	—	$	480
Total derivative not designated as hedging instruments		$	—	$	480

Effect of Derivatives on the Consolidated Statements of Operations

The effect of derivatives on the Consolidated Statements of Income for the years ended December 31, 2012, 2011 and 2010 are as follows:

(Dollars in thousands)

	LOCATION OF GAIN (LOSS) RECOGNIZED IN INCOME	AMOUNT OF GAIN (LOSS) RECOGNIZED IN INCOME
		2012			2011		2010
Derivatives designated in fair value hedging relationships:
Interest rate contracts
Realized gain on hedging instrument1	Interest expense	$	868		$	1,027	$	481
Net gain recognized in income from fair value hedges		$	868		$	1,027	$	481
Derivatives not designated as hedging instruments:
Lumber contracts
Unrealized gain (loss) on derivative	Cost of goods sold	$	(480	)	$	3,356	$	(2,876	)
Realized gain (loss) on derivative	Cost of goods sold	(396		)	1,164		—
Net gain (loss) recognized in income from derivatives not designated as hedging instruments		$	(876	)	$	4,520	$	(2,876	)