Restatement - Consolidated Statement of Income (Details) - USD ($) $ / shares in Units, shares in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jul. 04, 2015	Jun. 28, 2014	Jul. 04, 2015	Jun. 28, 2014	Dec. 31, 2013	Dec. 31, 2012
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net Revenues	$ 174,845,000	$ 186,516,000	$ 347,765,000	$ 366,269,000
Cost of Sales	143,638,000	148,838,000	289,797,000	292,676,000
Gross Profit	31,207,000	37,678,000	57,968,000	73,593,000
Selling, General and Administrative Expenses	20,368,000	20,868,000	43,502,000	41,955,000
Operating Income	10,839,000	16,810,000	14,466,000	31,638,000
Interest Expense	(6,446,000)	(6,994,000)	(13,107,000)	(14,119,000)
Income Before Taxes	3,061,000	9,816,000	27,000	17,519,000
Income Tax Expense	1,279,000	3,197,000	218,000	5,741,000
Net Income (Loss)	$ 1,782,000	$ 6,619,000	$ (191,000)	$ 11,778,000
Earnings (loss) per share
Basic earnings per share (in dollars per share)	$ 0.16	$ 0.61	$ (0.02)	$ 1.08
Diluted earnings per share (in dollars per share)	$ 0.16	$ 0.60	$ (0.02)	$ 1.06
Weighted-Average Number of Common Shares Outstanding
Basic weighted-average common shares outstanding	11,062	10,871	11,012	10,864
Diluted weighted-average common shares outstanding	11,276	11,045	11,012	11,122
As Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net Revenues		$ 186,516,000		$ 366,269,000
Cost of Sales		149,073,000		293,756,000
Gross Profit		37,443,000		72,513,000
Selling, General and Administrative Expenses		20,868,000		41,955,000
Operating Income		16,575,000		30,558,000
Interest Expense		(6,994,000)		(14,119,000)
Income Before Taxes		9,581,000		16,439,000
Income Tax Expense		3,109,000		5,338,000
Net Income (Loss)		$ 6,472,000		$ 11,101,000
Earnings (loss) per share
Basic earnings per share (in dollars per share)		$ 0.60		$ 1.02
Diluted earnings per share (in dollars per share)		$ 0.59		$ 1.00
Weighted-Average Number of Common Shares Outstanding
Basic weighted-average common shares outstanding		10,871		10,864
Diluted weighted-average common shares outstanding		11,045		11,122
Adjustments
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net Revenues		$ 0		$ 0
Cost of Sales		(235,000)		(1,080,000)
Gross Profit		235,000		1,080,000
Selling, General and Administrative Expenses		0		0
Operating Income		235,000		1,080,000
Interest Expense		0		0
Income Before Taxes		235,000		1,080,000
Income Tax Expense		88,000		403,000	$ (900,000)	$ 0
Net Income (Loss)		$ 147,000		$ 677,000
Earnings (loss) per share
Basic earnings per share (in dollars per share)		$ 0.01		$ 0.06
Diluted earnings per share (in dollars per share)		$ 0.01		$ 0.06
Weighted-Average Number of Common Shares Outstanding
Basic weighted-average common shares outstanding		0		0
Diluted weighted-average common shares outstanding		0		0