Borrowing Arrangements	9 Months Ended
Sep. 29, 2017
Debt Disclosure [Abstract]
Borrowing Arrangements	6. Borrowing Arrangements The Company has credit facilities in the U.S. and Czech Republic that expire on February 2, 2019 and March 31, 2020, respectively. The Company and certain of its subsidiaries have agreed to secure all of their obligations under a credit agreement (the “Credit Agreement”) by granting a first priority lien in substantially all of their respective personal property assets (subject to certain exceptions and limitations). As of September 29, 2017, the outstanding amounts under the U.S. Term Loan and Revolving Credit facility were $13.3 million and $39.9 million, respectively, gross of unamortized debt issuance costs of $0.2 million. The aggregate principal amount of the Revolving Credit facility is $40.0 million. As of September 29, 2017, interest rates on the outstanding U.S. Term Loan and Revolving Credit facility were 3.99% and 4.25%, respectively. In order to manage interest rate risk on the variable component of the Term Loan, the Company entered into an interest rate swap in September 2015 with a total notional amount of $20.0 million (which amount decreases based on prorated quarterly principal payments over the remaining period of the Term Loan) pursuant to which the Company pays the counterparty a fixed rate of 0.99% and receives interest at a variable rate equal to the LIBOR rate the Company is required to pay under its Term Loan, or 1.24%, as of September 29, 2017. This interest rate swap effectively locks in a fixed interest rate of 3.74% on $9.3 million of the $13.3 million term loan balance outstanding as of September 29, 2017. The Company is required to maintain certain financial covenants including a consolidated charge coverage ratio (as defined in the Credit Agreement) of at least 1.25 to 1.00, a consolidated leverage ratio (as defined in the Credit Agreement) no greater than 3.5 to 1.00 and a minimum cash balance of $35.0 million at the end of each quarter. The Company was in compliance with all covenants for the quarter ended September 29, 2017. The Credit Agreement also contains provisions requiring the following mandatory prepayments (subject to certain exceptions and limitations): annual prepayments in an amount equal to (a) 33% of excess cash flow (as defined in the Credit Agreement) if the aggregate outstanding principal amount of the Term Loan equals or exceeds $20.0 million and (b) 25% of excess cash flow if the aggregate outstanding principal amount of the Term Loan equals or exceeds $10.0 million but is less than $20.0 million. The Credit Agreement also restricts the Company from declaring or paying any cash dividends. In conjunction with the acquisition of Miconex in July 2015, the Company has a separate credit agreement with a local bank in the Czech Republic that provides for a term loan in an aggregate of 0.8 million euros and a revolving credit facility in the aggregate of up to 8.3 million euros. The credit agreement requires Miconex to maintain certain financial covenants, including a debt-to-earnings-before-interest-depreciation-and-amortization ratio no greater than 3.00 to 1.00 and an equity ratio of at least 15%. As of September 29, 2017, Miconex was in compliance with all of its covenants. As of September 29, 2017, Miconex had outstanding amounts under the term loan and revolving credit facility of 0.3 million euros (approximately $0.4 million) and 3.3 million euros (approximately $3.9 million), respectively, for a total of $4.3 million, with interest rates ranging from 1.3% to 2.3% plus a variable rate based on the Euro Interbank Offered Rate with due dates ranging from 2017 to 2020. As of September 29, 2017, the Company’s total bank debt was $57.3 million, and the Company has $0.1 million and 4.9 million euros (approximately $5.8 million) available to borrow on its revolving loans in the U.S. and Czech Republic, respectively. The fair value of the Company’s long term debt was based on Level 2 inputs, and fair value was determined using quoted prices for similar liabilities in inactive markets. The fair value of the Company’s outstanding borrowings under the Company’s revolving credit facilities was based on Level 2 inputs, and fair value was determined using inputs other than quoted prices that are observable, specifically, discounted cash flows of expected payments at current borrowing rates. The Company’s carrying value approximates fair value for the Company’s long term debt and revolving credit facilities.

6. Borrowing Arrangements

The Company has credit facilities in the U.S. and Czech Republic that expire on February 2, 2019 and March 31, 2020, respectively. The Company and certain of its subsidiaries have agreed to secure all of their obligations under a credit agreement (the “Credit Agreement”) by granting a first priority lien in substantially all of their respective personal property assets (subject to certain exceptions and limitations).

As of September 29, 2017, the outstanding amounts under the U.S. Term Loan and Revolving Credit facility were $13.3 million and $39.9 million, respectively, gross of unamortized debt issuance costs of $0.2 million. The aggregate principal amount of the Revolving Credit facility is $40.0 million. As of September 29, 2017, interest rates on the outstanding U.S. Term Loan and Revolving Credit facility were 3.99% and 4.25%, respectively.

In order to manage interest rate risk on the variable component of the Term Loan, the Company entered into an interest rate swap in September 2015 with a total notional amount of $20.0 million (which amount decreases based on prorated quarterly principal payments over the remaining period of the Term Loan) pursuant to which the Company pays the counterparty a fixed rate of 0.99% and receives interest at a variable rate equal to the LIBOR rate the Company is required to pay under its Term Loan, or 1.24%, as of September 29, 2017. This interest rate swap effectively locks in a fixed interest rate of 3.74% on $9.3 million of the $13.3 million term loan balance outstanding as of September 29, 2017.

The Company is required to maintain certain financial covenants including a consolidated charge coverage ratio (as defined in the Credit Agreement) of at least 1.25 to 1.00, a consolidated leverage ratio (as defined in the Credit Agreement) no greater than 3.5 to 1.00 and a minimum cash balance of $35.0 million at the end of each quarter. The Company was in compliance with all covenants for the quarter ended September 29, 2017.

The Credit Agreement also contains provisions requiring the following mandatory prepayments (subject to certain exceptions and limitations): annual prepayments in an amount equal to (a) 33% of excess cash flow (as defined in the Credit Agreement) if the aggregate outstanding principal amount of the Term Loan equals or exceeds $20.0 million and (b) 25% of excess cash flow if the aggregate outstanding principal amount of the Term Loan equals or exceeds $10.0 million but is less than $20.0 million. The Credit Agreement also restricts the Company from declaring or paying any cash dividends.

In conjunction with the acquisition of Miconex in July 2015, the Company has a separate credit agreement with a local bank in the Czech Republic that provides for a term loan in an aggregate of 0.8 million euros and a revolving credit facility in the aggregate of up to 8.3 million euros. The credit agreement requires Miconex to maintain certain financial covenants, including a debt-to-earnings-before-interest-depreciation-and-amortization ratio no greater than 3.00 to 1.00 and an equity ratio of at least 15%. As of September 29, 2017, Miconex was in compliance with all of its covenants.

As of September 29, 2017, Miconex had outstanding amounts under the term loan and revolving credit facility of 0.3 million euros (approximately $0.4 million) and 3.3 million euros (approximately $3.9 million), respectively, for a total of $4.3 million, with interest rates ranging from 1.3% to 2.3% plus a variable rate based on the Euro Interbank Offered Rate with due dates ranging from 2017 to 2020.

As of September 29, 2017, the Company’s total bank debt was $57.3 million, and the Company has $0.1 million and 4.9 million euros (approximately $5.8 million) available to borrow on its revolving loans in the U.S. and Czech Republic, respectively.

The fair value of the Company’s long term debt was based on Level 2 inputs, and fair value was determined using quoted prices for similar liabilities in inactive markets. The fair value of the Company’s outstanding borrowings under the Company’s revolving credit facilities was based on Level 2 inputs, and fair value was determined using inputs other than quoted prices that are observable, specifically, discounted cash flows of expected payments at current borrowing rates. The Company’s carrying value approximates fair value for the Company’s long term debt and revolving credit facilities.