Discontinued Operations - Option Agreement Cash Flow (Details) - Discontinued Operations, Held-for-sale or Disposed of by Sale - Pessac Business - USD ($) |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | |||
Capital expenditures | $ 0 | $ 0 | $ 1,271,000 |
Depreciation and amortization | 0 | 0 | 1,709,000 |
Operating and investing non-cash elements | $ 0 | $ 0 | $ (740,000) |