CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Income Statement [Abstract]
Net sales	$ 344,586	$ 314,653	$ 624,569	$ 563,379
Cost of goods sold	262,372	243,143	477,113	438,079
Gross profit	82,214	71,510	147,456	125,300
Selling, general and administrative expenses	71,086	64,725	138,213	121,527
Depreciation expense	1,641	1,621	3,109	3,260
Amortization expense	564	562	1,127	1,109
Impairment of assets held for sale	0	0	48	0
Public offering transaction-related costs	0	686	448	686
Restructuring expense	2	39	9	99
Total operating expenses	73,293	67,633	142,954	126,681
Income (loss) from operations	8,921	3,877	4,502	(1,381)
Other income (expense)
Interest expense	(668)	(1,233)	(1,299)	(2,258)
Other income, net	170	206	413	396
Income (loss) from continuing operations before income taxes	8,423	2,850	3,616	(3,243)
Income tax (expense) benefit	(2,943)	(966)	(1,445)	913
Income (loss) from continuing operations	5,480	1,884	2,171	(2,330)
Income from discontinued operations, net of income tax expense of $94, $74, $108 and $183, respectively	147	94	168	251
Net income (loss)	5,627	1,978	2,339	(2,079)
Redeemable Class B Senior Preferred stock deemed dividend	0	(744)	0	(1,473)
Income (loss) attributable to common stockholders	$ 5,627	$ 1,234	$ 2,339	$ (3,552)
Weighted average common shares outstanding
Basic (in shares)	25,722,671	13,750,400	25,703,449	13,637,462
Diluted (in shares)	26,224,550	18,887,677	26,212,787	13,637,462
Basic income (loss) per share
Income (loss) from continuing operations (in dollars per share)	$ 0.21	$ 0.06	$ 0.08	$ (0.28)
Income from discontinued operations (in dollars per share)	$ 0.01	$ 0.01	$ 0.01	$ 0.02
Net income (loss) per share (in dollars per share)	$ 0.22	$ 0.07	$ 0.09	$ (0.26)
Diluted income (loss) per share
Income (loss) from continuing operations (in dollars per share)	$ 0.21	$ 0.06	$ 0.08	$ (0.28)
Income from discontinued operations (in dollars per share)	$ 0.00	$ 0.01	$ 0.01	$ 0.02
Net income (loss) per share (in dollars per share)	$ 0.21	$ 0.07	$ 0.09	$ (0.26)