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Long-term debt	6 Months Ended
Long-term debt	Jun. 30, 2017
Debt Disclosure [Abstract]
Long-term debt	4. Long-term debt As of June 30, 2017, the Company has not made any borrowings under its five year $125 million secured revolving credit facility with JPMorgan Chase Bank, N.A., as Administrative Agent, and certain lenders party thereto. The Company has also not made any borrowings on its €5.8 million ($6.6 million) available line of credit in Italy at June 30, 2017. The Company is in compliance with all required financial covenants as of June 30, 2017.