Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
Operating activities:
Net income	$ 11,432	$ 4,134
Reconciliation of net income to cash provided by operating activities:
Depreciation and amortization	9,721	9,452
Provision (benefit) for deferred income taxes	611	(2,709)
Equity compensation expense	1,313	458
Provision for doubtful accounts	62	321
Loss on sale of property, plant, and equipment	183	24
Changes in operating assets and liabilities:
Accounts receivable	(9,249)	(6,034)
Inventories	688	1,661
Prepaid expenses and other current assets	(736)	(1,012)
Accounts payable and accrued expenses	8,487	5,369
Other	71	46
Net cash provided by operating activities	22,583	11,710
Investing activities:
Purchases of property, plant, and equipment, net	(16,782)	(8,603)
Other investing activities	(42)	0
Net cash used in investing activities	(16,824)	(8,603)
Financing activities:
Proceeds from long-term debt	5,800	0
Proceeds from issuance of partnership common units, net of underwriters' discount	0	50,234
Payment of offering costs	0	(7,349)
Payment of affiliate note payable	0	(32,200)
Distributions	(18,429)	(737)
Payment of financing costs	0	(362)
Net distribution (to) from parent	0	322
Net cash (used in) provided by financing activities	(12,629)	9,908
Effect of exchange rate changes on cash	57	(78)
Increase (decrease) in cash and cash equivalents	(6,813)	12,937
Cash and cash equivalents at beginning of period	17,476	6,629
Cash and cash equivalents at end of period	$ 10,663	$ 19,566