XML 39 R25.htm IDEA: XBRL DOCUMENT
v3.3.1.900

Employee Benefit Plans (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2015
Employee Benefit Plans [Abstract] |
Unrealized Gains (Losses) on Investments held in Rabbi Trust |
|  |  |  | Year ended December 31,
|  |  |  | 2015 |  | 2014 |  | 2013
Unrealized gains (losses) on investments held in rabbi trust |  |  |  | $ | (571) |  | $ | 184 |  | $ | 722

X
- References No definition available. + Details
Name: | us-gaap_DeferredCompensationArrangementsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of unrealized gains and losses on investments. + References No definition available. + Details
Name: | us-gaap_UnrealizedGainLossOnInvestmentsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration