Indemnification Provisions - Narrative (Details) - Discontinued Operations, Disposed of by Sale [Member] - Sisd [Member] - AMETEK Matter [Member] - Settled Litigation [Member] - Guarantee Obligations [Member]	12 Months Ended
	Dec. 31, 2016 USD ($)
Loss Contingencies [Line Items]
Loss contingency, damages awarded, refund of product purchase price, value	$ 326,000
Loss contingency, damages awarded, reimbursement of legal fees, value	45,000
Litigation settlement, expense	$ 281,000