Share-Based Payments and Other Compensation - Summary of Stock Option Activity (Details) - $ / shares |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Stock options | |||
| Outstanding as of beginning of year, in shares | 545,036 | 555,036 | 585,036 |
| Forfeited, in shares | (100,000) | (10,000) | (30,000) |
| Outstanding at beginning of year, in shares | 445,036 | 545,036 | 555,036 |
| Exercisable at end of year, in shares | 333,777 | 272,518 | 146,259 |
| Weighted Average Exercise Price Per Share | |||
| Outstanding at beginning of year, in dollars per share | $ 17.01 | $ 17.00 | $ 16.99 |
| Forfeitured, in dollars per share | 16.80 | 16.80 | 16.80 |
| Outstanding at end of year, in dollars per share | 17.05 | 17.01 | 17.00 |
| Exercisable at the end of year, in dollars per share | $ 17.05 | $ 17.01 | $ 16.99 |
| Stock options, additional information | |||
| Weighted average remaining contractual life of stock options | 6 years 9 months 18 days | ||