Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011
Cash flows from operating activities:
Net income (loss)	$ 26,819	$ 8,955	$ (16,898)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation	4,622	5,731	7,590
Amortization	6,458	6,502	6,502
Provision for allowances for doubtful accounts	29	37	880
Stock-based compensation	970	1,363	1,773
Amortization and write-offs of deferred financing costs	1,660	857	1,233
Derivative financial instruments	(16)	136	37
Deferred income taxes	(3,460)	(82)	(2,324)
Tax benefit for stock options exercised	(396)	0
Impairment charges			5,959
Gain on disposal of assets	(2,186)	(266)	(996)
Change in operating assets and liabilities:
Accounts receivable	(8,234)	(667)	(1,560)
Inventories	(1,379)	73	(1,068)
Prepaid expenses and other current assets	(1,267)	87	367
Accounts payable and accrued liabilities	2,111	462	(3,167)
Net cash provided by/(used in) operating activities	25,731	23,188	(1,672)
Cash flows from investing activities:
Purchases of property, plant and equipment	(7,550)	(3,792)	(3,496)
Acquisition of intangible assets			(200)
Net change in margin account for derivative financial instruments			250
Proceeds from disposal of asset	7,478	454	1,672
Net cash used in investing activities	(72)	(3,338)	(1,774)
Cash flows from financing activities:
Payments of long-term debt	(38,500)	(8,000)	(52,500)
Proceeds from issuance of long-term debt	80,000		48,000
Payments of financing costs	(3,583)	(143)	(3,013)
Payments of capital leases		(50)	(113)
Purchases of treasury stock	(56,091)	(3,946)
Tax benefit for stock options exercised	396
Issuance of common stock	3,580	92
Net cash (used in) financing activities	(14,198)	(12,047)	(7,626)
Net increase/(decrease) in cash and cash equivalents	11,461	7,803	(11,072)
Cash and cash equivalents at beginning of period	18,743	10,940	22,012
Cash and cash equivalents at end of period	30,204	18,743	10,940
Supplemental cash flow information:
Interest paid	2,662	2,767	2,411
Income tax payments	$ 135	$ 200