CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Statement [Abstract]
Net sales	$ 350,065	$ 344,586	$ 647,685	$ 624,569
Cost of goods sold	263,654	262,372	489,953	477,113
Gross profit	86,411	82,214	157,732	147,456
Selling, general and administrative expenses	74,655	71,086	144,580	138,213
Depreciation expense	2,243	1,641	4,318	3,109
Amortization expense	597	564	1,160	1,127
Impairment of assets held for sale	0	0	0	48
Merger-related costs	3,262	0	3,469	0
Public offering transaction-related costs	0	0	0	448
Restructuring expense	205	2	397	9
Total operating expenses	80,962	73,293	153,924	142,954
Income from operations	5,449	8,921	3,808	4,502
Other income (expense)
Interest expense	(677)	(668)	(1,388)	(1,299)
Other income, net	196	170	808	413
Income from continuing operations before income taxes	4,968	8,423	3,228	3,616
Income tax expense (benefit)	2,437	2,943	(1,154)	1,445
Income from continuing operations	2,531	5,480	4,382	2,171
Income from discontinued operations, net of income tax expense of $24, $94, $29 and $108, respectively	39	147	47	168
Net income	$ 2,570	$ 5,627	$ 4,429	$ 2,339
Weighted average common shares outstanding
Basic (in shares)	26,097,615	25,722,671	26,094,881	25,703,449
Diluted (in shares)	26,329,951	26,224,550	26,299,041	26,212,787
Basic income (loss) per share
Income from continuing operations (in dollars per share)	$ 0.10	$ 0.21	$ 0.17	$ 0.08
Income from discontinued operations (in dollars per share)	0.00	0.01	0.00	0.01
Net income per share (in dollars per share)	0.10	0.22	0.17	0.09
Diluted income (loss) per share
Income from continuing operations (in dollars per share)	0.10	0.21	0.17	0.08
Income from discontinued operations (in dollars per share)	0.00	0.00	0.00	0.01
Net income per share (in dollars per share)	$ 0.10	$ 0.21	$ 0.17	$ 0.09