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Subsequent Event	3 Months Ended
Subsequent Event	Mar. 31, 2017
Subsequent Events [Abstract]
Subsequent Event	Subsequent Event On May 2, 2017, the Company entered into an Asset Purchase Agreement with National Oilwell Varco, L.P. (“NOV”) to sell substantially all of the assets and transfer certain specified liabilities and obligations of the Company’s Drilling Technologies segment to NOV. NOV will pay $17.0 million in cash consideration, subject to normal working capital adjustments, with $1.5 million held back by NOV for up to 18 months. Closing is expected to occur mid-May, 2017.