Derivatives - Notional Amounts - Not Designated as Hedges (Details) - USD ($)
|
12 Months Ended |
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
| Not Designated as Hedging Instrument |
|
|
|
| Derivative [Line Items] |
|
|
|
| Notional Amount |
$ 14,620,000
|
$ 40,165,000
|
|
| Gain (Loss) |
195,000
|
(54,000)
|
|
| Foreign exchange forward |
|
|
|
| Derivative [Line Items] |
|
|
|
| Gain (Loss) |
2,573,000
|
1,112,000
|
$ 338,000
|
| Foreign exchange forward | Not Designated as Hedging Instrument |
|
|
|
| Derivative [Line Items] |
|
|
|
| Gain (Loss) |
195,000
|
(54,000)
|
|
| AUD / USD | Not Designated as Hedging Instrument |
|
|
|
| Derivative [Line Items] |
|
|
|
| Notional Amount |
5,800,000
|
8,051,000
|
|
| Gain (Loss) |
204,000
|
337,000
|
|
| CAD / USD | Not Designated as Hedging Instrument |
|
|
|
| Derivative [Line Items] |
|
|
|
| Notional Amount |
0
|
5,762,000
|
|
| Gain (Loss) |
0
|
(4,000)
|
|
| CNY / USD | Not Designated as Hedging Instrument |
|
|
|
| Derivative [Line Items] |
|
|
|
| Notional Amount |
5,556,000
|
9,943,000
|
|
| Gain (Loss) |
(24,000)
|
(441,000)
|
|
| EUR / USD | Not Designated as Hedging Instrument |
|
|
|
| Derivative [Line Items] |
|
|
|
| Notional Amount |
0
|
2,118,000
|
|
| Gain (Loss) |
0
|
53,000
|
|
| DKK / USD | Not Designated as Hedging Instrument |
|
|
|
| Derivative [Line Items] |
|
|
|
| Notional Amount |
0
|
7,927,000
|
|
| Gain (Loss) |
0
|
125,000
|
|
| GBP / USD | Not Designated as Hedging Instrument |
|
|
|
| Derivative [Line Items] |
|
|
|
| Notional Amount |
0
|
4,526,000
|
|
| Gain (Loss) |
0
|
(106,000)
|
|
| NZD / AUD | Not Designated as Hedging Instrument |
|
|
|
| Derivative [Line Items] |
|
|
|
| Notional Amount |
3,264,000
|
0
|
|
| Gain (Loss) |
15,000
|
0
|
|
| NOK / USD | Not Designated as Hedging Instrument |
|
|
|
| Derivative [Line Items] |
|
|
|
| Notional Amount |
0
|
1,838,000
|
|
| Gain (Loss) |
$ 0
|
$ (18,000)
|
|