Discontinued Operations [Narrative] (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain/(loss) from sale of discontinued operations, net of tax		$ (1,930)	$ 0	$ 112
Cash received from sale of subsidiary, net		0	$ 0	25,366
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High		25,000
Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash received from sale of subsidiary, net				1,500
Field and Collateral [Domain]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Business Combination, Consideration Transferred	$ 29,100
Gain/(loss) from sale of discontinued operations, net of tax		$ (1,930)		$ (1,400)