CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
OPERATING ACTIVITIES:
Net income	$ 10,674	$ 448
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	14,588	14,337
Amortization, including accretion of debt discount	3,424	3,703
Deferred income taxes	(1,836)	(309)
Earnings of equity method investees	(297)	(236)
Gain on sale of fixed assets	0	(57)
Share-based compensation expense	2,723	2,461
Changes in operating assets and liabilities -
Accounts receivable, net	(20,358)	(827)
Inventories, net	(17,607)	422
Prepaid expenses and other	(3,454)	(4,382)
Accounts payable	10,745	2,216
Accrued expenses and other	4,641	(2,460)
Net cash provided by operating activities	3,243	15,316
INVESTING ACTIVITIES:
Capital expenditures	(10,701)	(14,370)
Proceeds from sale of fixed assets	83	301
Payment for additional interest in PST	0	(19,779)
Net cash used for investing activities	(10,618)	(33,848)
FINANCING ACTIVITIES:
Revolving credit facility borrowings	0	11,310
Revolving credit facility payments	(1,160)	(24,426)
Proceeds from issuance of other debt	19,234	18,871
Repayments of other debt	(16,953)	(26,124)
Other financing costs	0	(111)
Repurchase of Common Shares to satisfy employee tax withholding	(670)	(1,119)
Net cash provided by (used for) financing activities	451	(21,599)
Effect of exchange rate changes on cash and cash equivalents	(608)	564
Net change in cash and cash equivalents	(7,532)	(39,567)
Cash and cash equivalents at beginning of period	44,555	78,731
Cash and cash equivalents at end of period	37,023	39,164
Supplemental disclosure of non-cash financing activities:
Change in fair value of interest rate swap	(1,394)	754
Issuance of Common Shares for acquisition of additional PST interest	$ 0	$ 10,197