Consolidated Statements of Changes in Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Operating Activities
Net (loss) income	$ (7,055)	$ 4,988	$ (11,149)
Adjustments to reconcile net (loss) income to net cash (used in) provided by operating activities:
Loss from discontinued operations			873
Depreciation and amortization	5,696	5,476	4,562
Amortization of financing fees	1,653	1,498	1,918
Pension curtailment expense	1,325
Deferred foreign income taxes	39	(271)	(161)
Loss (gain) on sale/disposals of fixed assets	4	(12)	(8)
Amortization of debt discount	381	348	318
Debt prepayment expense		295	1,246
Amortization of deferred income	(79)	(125)	(188)
Common unit compensation expense	17
Changes in operating assets and liabilities:
Accounts receivable	8,091	(15,761)	5,501
Inventories	(4,158)	(4,765)	3,901
Prepaid expenses and other current assets	(984)	405	(198)
Accounts payable and accrued expenses	5,201	8,001	(5,052)
Accrued pension and retirement liabilities	(172)	(622)	(1,075)
Customer advances and deferred income	2,001	(46)	1,967
Other liabilities, net	463	(71)	(69)
Net cash provided by (used in) operating activities from continuing operations	12,423	(662)	2,386
Net cash used in operating activities from discontinued operations		(33)	(732)
Net cash provided by (used in) operating activities	12,423	(695)	1,654
Investing Activities
Purchases of property and equipment	(4,410)	(5,600)	(7,440)
Proceeds from sale/disposal of property	66	12	19
Change in restricted cash	464	(1,380)	465
Net cash used in investing activities from continuing operations	(3,880)	(6,968)	(6,956)
Net cash provided by investing activities from discontinued operations			14
Net cash used in investing activities	(3,880)	(6,968)	(6,942)
Financing Activities
Debt issuance costs		(1,636)	(75)
Line of credit advance	6
Capital lease obligation payments	(1,148)	(1,229)	(1,146)
Distributions paid to members	(3,343)	(12,889)	(4,976)
Net cash used in financing activities from continuing operations	(4,485)	(15,754)	(6,197)
Net cash used in financing activities from discontinued operations			(15)
Net cash used in financing activities	(4,485)	(15,754)	(6,212)
Effect of exchange rates on cash	79	209	239
Change in cash and cash equivalents	4,137	(23,208)	(11,261)
Cash and cash equivalents, beginning of period	38,236	61,444	72,705
Cash and cash equivalents, end of period	42,373	38,236	61,444
Supplemental Disclosure of Cash Flow Information
Cash paid for interest	22,198	22,075	22,817
Cash paid for foreign income taxes	3,207	2,574	3,313
Non-cash consideration for sale of equipment	75
Accrued debt issuance costs		17
Accrued purchases of fixed assets	516	364	78
Accrued distributions to members		$ 3,343	$ 15,606