Guarantor Finanical Information Balance Sheet (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014	Dec. 31, 2013
Cash and cash equivalents	$ 11,496	$ 8,454	$ 17,076	$ 30,829
Accounts receivable, less allowance for doubtful accounts	115,260	131,003
Receivables from affiliates	0	0
Inventories	203,143	236,932
Prepaid expenses and other current assets	15,013	13,029
Total current assets	344,912	389,418
Investment in joint venture	38,455	37,443
Goodwill	12,973	12,973
Intangible assets, net	50,324	56,555
Other assets	16,910	18,752
Investment in subsidiaries	0	0
Receivables from affiliates	0	0
Property, plant and equipment, net	66,346	72,835
Total assets	529,920	587,976
Accounts payable	61,339	68,782
Payables due to affiliates	0	0
Other current liabilities	41,480	27,998
Current portion of long-term debt	617	737
Total current liabilities	103,436	97,517
Long-term debt, less current portion	326,066	309,377
Payables due to affiliates	0	0
Deferred income taxes	8,613	8,360
Other non-current liabilities	22,966	22,402
Stockholders’ equity (deficit)	68,839	150,320
Total liabilities and stockholders’ equity	529,920	587,976
Parent
Cash and cash equivalents	1,674	511	3,999	8,675
Accounts receivable, less allowance for doubtful accounts	53,682	66,178
Receivables from affiliates	1,089	2,071
Inventories	104,572	142,314
Prepaid expenses and other current assets	3,888	3,490
Total current assets	164,905	214,564
Investment in joint venture	38,455	37,443
Goodwill	0	0
Intangible assets, net	38,189	42,772
Other assets	15,094	18,766
Investment in subsidiaries	57,299	70,274
Receivables from affiliates	133,707	113,188
Property, plant and equipment, net	40,783	46,094
Total assets	488,432	543,101
Accounts payable	36,336	41,613
Payables due to affiliates	1,089	2,071
Other current liabilities	32,724	18,841
Current portion of long-term debt	575	691
Total current liabilities	70,724	63,216
Long-term debt, less current portion	326,036	307,327
Payables due to affiliates	0	0
Deferred income taxes	0	0
Other non-current liabilities	22,833	22,238
Stockholders’ equity (deficit)	68,839	150,320
Total liabilities and stockholders’ equity	488,432	543,101
Guarantors
Cash and cash equivalents	1,222	977	1,237	495
Accounts receivable, less allowance for doubtful accounts	18,629	19,303
Receivables from affiliates	113	81
Inventories	19,960	19,320
Prepaid expenses and other current assets	413	1,033
Total current assets	40,337	40,714
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	42,079	36,607
Property, plant and equipment, net	11,774	12,184
Total assets	107,163	102,478
Accounts payable	9,391	8,055
Payables due to affiliates	0	0
Other current liabilities	2,668	3,065
Current portion of long-term debt	0	0
Total current liabilities	12,059	11,120
Long-term debt, less current portion	0	0
Payables due to affiliates	7,004	5,581
Deferred income taxes	5,524	5,524
Other non-current liabilities	0	0
Stockholders’ equity (deficit)	82,576	80,253
Total liabilities and stockholders’ equity	107,163	102,478
Non-Guarantors
Cash and cash equivalents	8,600	6,966	11,840	21,659
Accounts receivable, less allowance for doubtful accounts	42,949	45,522
Receivables from affiliates	0	0
Inventories	78,679	75,366
Prepaid expenses and other current assets	10,712	8,506
Total current assets	140,940	136,360
Investment in joint venture	0	0
Goodwill	0	0
Intangible assets, net	12,135	13,783
Other assets	2,675	996
Investment in subsidiaries	0	0
Receivables from affiliates	0	2,157
Property, plant and equipment, net	13,789	14,557
Total assets	169,539	167,853
Accounts payable	15,612	19,114
Payables due to affiliates	113	81
Other current liabilities	6,088	6,092
Current portion of long-term debt	42	46
Total current liabilities	21,855	25,333
Long-term debt, less current portion	30	2,050
Payables due to affiliates	168,782	146,371
Deferred income taxes	3,948	3,846
Other non-current liabilities	133	164
Stockholders’ equity (deficit)	(25,209)	(9,911)
Total liabilities and stockholders’ equity	169,539	167,853
Eliminations
Cash and cash equivalents	0	0	$ 0	$ 0
Accounts receivable, less allowance for doubtful accounts	0	0
Receivables from affiliates	(1,202)	(2,152)
Inventories	(68)	(68)
Prepaid expenses and other current assets	0	0
Total current assets	(1,270)	(2,220)
Investment in joint venture	0	0
Goodwill	0	0
Intangible assets, net	0	0
Other assets	(859)	(1,010)
Investment in subsidiaries	(57,299)	(70,274)
Receivables from affiliates	(175,786)	(151,952)
Property, plant and equipment, net	0	0
Total assets	(235,214)	(225,456)
Accounts payable	0	0
Payables due to affiliates	(1,202)	(2,152)
Other current liabilities	0	0
Current portion of long-term debt	0	0
Total current liabilities	(1,202)	(2,152)
Long-term debt, less current portion	0	0
Payables due to affiliates	(175,786)	(151,952)
Deferred income taxes	(859)	(1,010)
Other non-current liabilities	0	0
Stockholders’ equity (deficit)	(57,367)	(70,342)
Total liabilities and stockholders’ equity	$ (235,214)	$ (225,456)