Stock Repurchase Program (Details) - USD ($) |
3 Months Ended | 4 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|---|
Sep. 30, 2015 |
Sep. 30, 2015 |
Sep. 30, 2015 |
Jun. 30, 2015 |
Nov. 30, 2012 |
|
| Equity, Class of Treasury Stock [Line Items] | |||||
| Repurchase of common stock, value | $ 7,299,000 | ||||
| Stock repurchase program, remaining amount | $ 57,300,000 | $ 57,300,000 | $ 57,300,000 | ||
| Share Repurchase Program, November 2012 [Member] | |||||
| Equity, Class of Treasury Stock [Line Items] | |||||
| Stock repurchase program, authorized amount | $ 25,000,000 | ||||
| Repurchase of common stock, shares | 2,404 | 549,723 | |||
| Repurchase of common stock, value | $ 7,300,000 | ||||
| Repurchase of common stock, average price per share (in dollars per share) | $ 16.44 | $ 13.28 | |||
| Share Repurchase Program, June 2015 [Member] | |||||
| Equity, Class of Treasury Stock [Line Items] | |||||
| Stock repurchase program, authorized amount | $ 50,000,000 | ||||
| Repurchase of common stock, shares | 0 |