Unaudited Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2015 |
Jun. 30, 2014 |
Jun. 30, 2015 |
Jun. 30, 2014 |
|
| Statement of Comprehensive Income [Abstract] | ||||
| Unrealized (losses) gains arising during the period, tax | $ (147) | $ 121 | $ (127) | $ 221 |