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Nature of Operations and Summary of Significant Accounting Policies - Inventory (Details) - USD ($) $ in Thousands	Jan. 02, 2016	Jan. 03, 2015
Accounting Policies [Abstract]
Inventory for Long-term Contracts, Net	$ 274	$ 2,171
Raw Materials and Supplies	22,324	24,403
Work in Process	13,819	11,259
Finished Goods (includes $1,262 and $1,394 at customer locations)	20,615	19,561
Inventories	56,758	55,223
Finished goods, at customer locations	1,262	1,394
Customer Advances and Progress Payments for Long-term Contracts or Programs	$ 2,374	$ 3,248

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- Definition

Inventory associated with long-term contracts expected to be sold or consumed within one year or operating cycle, if longer, net of progress billings

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The amount of the offset related to government or other customer advances received on a contract when the expected advances will be applied in payment to those particular charges of the receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 912
-SubTopic 210
-Section 45
-Paragraph 1
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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale.

+ References

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-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
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-Name Regulation S-X (SX)
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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Aggregated amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed. This amount is net of valuation reserves and adjustments.

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Carrying amount, net of reserves and adjustments, as of the balance sheet date of merchandise or goods which are partially completed. This inventory is generally comprised of raw materials, labor and factory overhead costs, which require further materials, labor and overhead to be converted into finished goods, and which generally require the use of estimates to determine percentage complete and pricing.

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Gross amount of merchandise or materials to which the entity holds the title, but physically at another entity's facilities (for example, but not limited to, work in process may be temporarily at the site of a subcontractor).

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