Supplemental Guarantor Information (Supplemental Condensed Consolidated Balance Sheet) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
Assets
Cash and cash equivalents	$ 26,647	$ 33,462	$ 185,134	$ 109,998
Accounts receivable	18,805	13,799
Inventories	599,747	556,323
Prepaid expenses and other assets	28,203	28,796
Property and equipment, net	13,419	12,471
Deferred tax asset, net	1,812	1,359
Amortizable intangible assets, net	7,543	8,632
Goodwill	21,994	21,137
Total Assets	718,170	675,979
Liabilities:
Accounts payable	9,483	17,135
Accrued expenses and other liabilities	73,753	64,029
Notes payable and revolving line of credit	262,321	229,610
Total liabilities	345,557	310,774
Stockholders' equity	372,613	365,205
Total liabilities and stockholders' equity	718,170	675,979
Parent
Assets
Cash and cash equivalents	14,378	22,710	184,275	106,614
Accounts receivable	855	1,202
Investment in subsidiaries	609,424	558,177
Prepaid expenses and other assets	7,176	7,286
Property and equipment, net	772	641
Deferred tax asset, net	1,812	1,359
Total Assets	634,417	591,375
Liabilities:
Accounts payable		70
Accrued expenses and other liabilities	8,152	7,495
Notes payable and revolving line of credit	253,652	218,605
Total liabilities	261,804	226,170
Stockholders' equity	372,613	365,205
Total liabilities and stockholders' equity	634,417	591,375
Guarantor Subsidiaries [Member]
Assets
Cash and cash equivalents	12,269	10,752	859	3,384
Accounts receivable	17,950	12,597
Inventories	599,747	556,323
Prepaid expenses and other assets	21,027	21,510
Property and equipment, net	12,647	11,830
Amortizable intangible assets, net	7,543	8,632
Goodwill	21,994	21,137
Total Assets	693,177	642,781
Liabilities:
Accounts payable	9,483	17,065
Accrued expenses and other liabilities	65,601	56,534
Notes payable and revolving line of credit	8,669	11,005
Total liabilities	83,753	84,604
Stockholders' equity	609,424	558,177
Total liabilities and stockholders' equity	693,177	642,781
Elimination Entries [Member]
Assets
Investment in subsidiaries	(609,424)	(558,177)
Total Assets	(609,424)	(558,177)
Liabilities:
Stockholders' equity	(609,424)	(558,177)
Total liabilities and stockholders' equity	$ (609,424)	$ (558,177)