Guarantor Finanical Information Balance Sheet (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012
Cash and cash equivalents	$ 11,805	$ 30,829	$ 41,494	$ 21,607
Accounts receivable, less allowance for doubtful accounts	148,226	128,544
Receivables from affiliates	0	0
Inventories	252,697	214,900
Prepaid expenses and other current assets	16,045	16,418
Total current assets	428,773	390,691
Investment in joint venture	46,247	41,879
Goodwill	12,973	69,289
Intangible assets, net	59,962	69,489
Other assets	35,069	31,780
Investment in subsidiaries	0	0
Receivables from affiliates	0	0
Property, plant and equipment, net	73,118	76,694
Total assets	656,142	679,822
Accounts payable	111,112	69,577
Payables due to affiliates	0	0
Other current liabilities	39,081	31,367
Current portion of long-term debt	734	397
Total current liabilities	150,927	101,341
Long-term debt, less current portion	276,140	245,599
Payables due to affiliates	0	0
Deferred income taxes	4,214	10,733
Other non-current liabilities	10,411	12,255
Stockholders’ equity	214,450	309,894
Total liabilities and stockholders’ equity	656,142	679,822
Parent
Cash and cash equivalents	2,995	8,675	23,644	4,106
Accounts receivable, less allowance for doubtful accounts	77,168	67,536
Receivables from affiliates	1,419	2,811
Inventories	157,256	133,139
Prepaid expenses and other current assets	6,270	8,383
Total current assets	245,108	220,544
Investment in joint venture	46,247	41,879
Goodwill	0	41,504
Intangible assets, net	45,230	52,703
Other assets	30,710	28,145
Investment in subsidiaries	94,793	119,075
Receivables from affiliates	99,259	87,247
Property, plant and equipment, net	47,010	50,812
Total assets	608,357	641,909
Accounts payable	81,016	41,233
Payables due to affiliates	884	2,270
Other current liabilities	30,944	22,801
Current portion of long-term debt	686	371
Total current liabilities	113,530	66,675
Long-term debt, less current portion	274,075	245,561
Payables due to affiliates	0	0
Deferred income taxes	(3,928)	7,823
Other non-current liabilities	10,230	11,956
Stockholders’ equity	214,450	309,894
Total liabilities and stockholders’ equity	608,357	641,909
Guarantors
Cash and cash equivalents	0	495	552	903
Accounts receivable, less allowance for doubtful accounts	20,783	18,305
Receivables from affiliates	0	0
Inventories	18,946	16,357
Prepaid expenses and other current assets	1,025	2,244
Total current assets	40,754	37,401
Investment in joint venture	0	0
Goodwill	12,973	12,973
Intangible assets, net	0	0
Other assets	0	0
Investment in subsidiaries	0	0
Receivables from affiliates	38,639	34,637
Property, plant and equipment, net	12,016	12,855
Total assets	104,382	97,866
Accounts payable	10,904	8,274
Payables due to affiliates	0	0
Other current liabilities	133	944
Current portion of long-term debt	0	0
Total current liabilities	11,037	9,218
Long-term debt, less current portion	0	0
Payables due to affiliates	7,313	6,579
Deferred income taxes	6,952	7,061
Other non-current liabilities	0	0
Stockholders’ equity	79,080	75,008
Total liabilities and stockholders’ equity	104,382	97,866
Non-Guarantors
Cash and cash equivalents	8,810	21,659	17,298	16,598
Accounts receivable, less allowance for doubtful accounts	50,275	42,703
Receivables from affiliates	0	0
Inventories	76,563	65,472
Prepaid expenses and other current assets	8,952	5,993
Total current assets	144,600	135,827
Investment in joint venture	0	0
Goodwill	0	14,812
Intangible assets, net	14,732	16,786
Other assets	4,359	3,635
Investment in subsidiaries	0	0
Receivables from affiliates	1,425	1,465
Property, plant and equipment, net	14,092	13,027
Total assets	179,208	185,552
Accounts payable	19,192	20,070
Payables due to affiliates	535	541
Other current liabilities	8,004	7,622
Current portion of long-term debt	48	26
Total current liabilities	27,779	28,259
Long-term debt, less current portion	2,065	38
Payables due to affiliates	132,010	116,770
Deferred income taxes	1,190	(4,151)
Other non-current liabilities	181	299
Stockholders’ equity	15,983	44,337
Total liabilities and stockholders’ equity	179,208	185,552
Eliminations
Cash and cash equivalents	0	0	0	0
Accounts receivable, less allowance for doubtful accounts	0	0
Receivables from affiliates	(1,419)	(2,811)
Inventories	(68)	(68)
Prepaid expenses and other current assets	(202)	(202)
Total current assets	(1,689)	(3,081)
Investment in joint venture	0	0
Goodwill	0	0
Intangible assets, net	0	0
Other assets	0	0
Investment in subsidiaries	(94,793)	(119,075)
Receivables from affiliates	(139,323)	(123,349)
Property, plant and equipment, net	0	0
Total assets	(235,805)	(245,505)
Accounts payable	0	0
Payables due to affiliates	(1,419)	(2,811)
Other current liabilities	0	0
Current portion of long-term debt	0	0
Total current liabilities	(1,419)	(2,811)
Long-term debt, less current portion	0	0
Payables due to affiliates	(139,323)	(123,349)
Deferred income taxes	0	0
Other non-current liabilities	0	0
Stockholders’ equity	(95,063)	(119,345)
Total liabilities and stockholders’ equity	$ (235,805)	$ (245,505)