Shareholders' Equity - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands |
1 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Oct. 31, 2015 |
Jul. 31, 2015 |
Apr. 30, 2015 |
Jul. 31, 2014 |
Mar. 31, 2016 |
Sep. 30, 2015 |
Jun. 30, 2015 |
Mar. 31, 2015 |
Dec. 31, 2014 |
Jun. 30, 2014 |
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Stockholders Equity Note [Abstract] | |||||||||||||
| Additional capital raised, net of underwriting discounts and offering costs | $ 34,897 | ||||||||||||
| Cash dividends declared per share | $ 0.07 | $ 0.06 | $ 0.06 | $ 0.06 | $ 0.14 | $ 0.08 | $ 0.29 | $ 0.18 | $ 0.22 | ||||
| Dividend paid per share | $ 0.06 | $ 0.06 | $ 0.06 | $ 0.08 | $ 0.07 | $ 0.14 | |||||||
| Dividend total amount | $ 1,200 | $ 1,200 | $ 2,100 | $ 3,000 | |||||||||