Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Organization Consolidation And Presentation [Line Items]
Liability for uncertain tax positions	$ 3,000,000
Headquarters relocation			$ 0
Payments for Reinsurance	11,100,000
Restricted assets	0	$ 36,106,000
Shipping and handling costs	81,600,000	60,300,000	52,200,000
Debt issuance cost	9,500,000	8,200,000
Amortization of deferred loan costs	2,525,000	2,277,000	1,303,000
Transferred Liability For Unpaid Claims	8,300,000
Loss portfolio transfer	2,826,000	0	$ 0
Aggregate Maximum Obligation Of Reinsurer	17,500,000
Self Insurance Reserve	6,400,000
Advances from customers	$ 10,133,000	2,830,000
Letter of Credit [Member]
Organization Consolidation And Presentation [Line Items]
Restricted assets		$ 36,100,000
Construction Services [Member]
Organization Consolidation And Presentation [Line Items]
Percent Of Completion Percentage	92.00%	94.00%	95.00%
Selling, general and administrative expenses [Member]
Organization Consolidation And Presentation [Line Items]
Headquarters relocation	$ 3,865,000	$ 2,054,000
Retirement savings expense recorded	2,400,000	1,600,000	$ 300,000
Loss portfolio transfer	2,800,000
Interest expense [Member]
Organization Consolidation And Presentation [Line Items]
Amortization of deferred loan costs	2,500,000	2,300,000	$ 1,300,000
Income taxes receivable [Member]
Organization Consolidation And Presentation [Line Items]
Liability for uncertain tax positions	3,000,000	0
Prepaid expenses and other current assets [Member]
Organization Consolidation And Presentation [Line Items]
Vendor Allowance Receivable	13,700,000	7,100,000
Other assets [Member]
Organization Consolidation And Presentation [Line Items]
Assets held for sale	0	700,000
Accounts payable [Member]
Organization Consolidation And Presentation [Line Items]
Book overdrafts	300,000	3,100,000
Accrued expenses and other liabilities [Member]
Organization Consolidation And Presentation [Line Items]
Warranty obligations	1,800,000	1,500,000
Accrued expenses and other liabilities and other long-term liabilities [Member]
Organization Consolidation And Presentation [Line Items]
Deferred rent liability	$ 800,000	100,000
Accounting Standards Update 2015 17 [Member] | Long Term Deferred Tax Assets [Member]
Organization Consolidation And Presentation [Line Items]
Current deferred tax assets		8,700,000
Previously reported [Member] | Receivables [Member]
Organization Consolidation And Presentation [Line Items]
Vendor Allowance Receivable		7,100,000
Previously reported [Member] | Accounts payable [Member]
Organization Consolidation And Presentation [Line Items]
Advances from customers		2,800,000
Previously reported [Member] | Accrued Compensation [Member]
Organization Consolidation And Presentation [Line Items]
Accrued compensation		19,800,000
Reclass to Conform with Current Presentation [Member] | Prepaid expenses and other current assets [Member]
Organization Consolidation And Presentation [Line Items]
Vendor Allowance Receivable		7,100,000
Reclass to Conform with Current Presentation [Member] | Accrued expenses and other liabilities [Member]
Organization Consolidation And Presentation [Line Items]
Advances from customers		2,800,000
Accrued compensation		$ 19,800,000