Basis of Presentation (Narrative) (Details) $ in Thousands |
9 Months Ended | |
|---|---|---|
|
Sep. 30, 2016
USD ($)
segment
|
Dec. 31, 2015
USD ($)
|
|
| Basis of Presentation [Abstract] | ||
| Number of geographic operating segments | segment | 6 | |
| Allowance for doubtful accounts receivable | $ 0 | $ 0 |
| Cash held in escrow | $ 27,749 | $ 11,817 |