Employee Benefit Plans (Details)	12 Months Ended
	Dec. 31, 2012 Participant
Western Conference of Teamsters Pension Plan [Member]
Summary of Company's participation in multi-employer pension plans
EIN Number	916145047
Plan Number	001
Pension Protection Act Zone Status	At least 80 percent
Financial Improvement Plan	No
Surcharge Imposed	No
Company Participants	73
Western Conference of Teamsters Pension Plan [Member] | Minimum [Member]
Summary of Company's participation in multi-employer pension plans
Expiration Date of Collective-Bargaining Agreement	Mar. 31, 2013
Western Conference of Teamsters Pension Plan [Member] | Maximum [Member]
Summary of Company's participation in multi-employer pension plans
Expiration Date of Collective-Bargaining Agreement	Apr. 30, 2015
Southern California Lumber Industry Retirement Fund [Member]
Summary of Company's participation in multi-employer pension plans
EIN Number	956035266
Plan Number	001
Pension Protection Act Zone Status	At least 80 percent
Financial Improvement Plan	No
Surcharge Imposed	No
Expiration Date of Collective-Bargaining Agreement	Jun. 30, 2014
Company Participants	10
Central States Southeast and Southwest Areas Pension Plan [Member]
Summary of Company's participation in multi-employer pension plans
EIN Number	366044243
Plan Number	001
Pension Protection Act Zone Status	Less than 65 percent
Financial Improvement Plan	Implemented
Surcharge Imposed	Yes
Expiration Date of Collective-Bargaining Agreement	Mar. 31, 2013
Company Participants	3