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Stock-Based Compensation - Stock Option Activity (Details) - Stock options
 3 Months Ended
Mar. 31, 2016
USD ($)
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]  
Outstanding - beginning of period (in shares) | shares 457,851
Granted (in shares) | shares 0
Exercised (in shares) | shares 0
Expired (in shares) | shares (23,415)
Forfeited (in shares) | shares 0
Outstanding - end of period (in shares) | shares 434,436
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]  
Outstanding - beginning of period, Weighted-Average Exercise Price Per Share (in dollars per share) | $ / shares $ 19.29
Granted, Weighted-Average Exercise Price Per Share (in dollars per share) | $ / shares 0.00
Exercised, Weighted-Average Exercise Price Per Share (in dollars per share) | $ / shares 0.00
Expired, Weighted-Average Exercise Price Per Share (in dollars per share) | $ / shares 18.99
Forfeited, Weighted-Average Exercise Price Per Share (in dollars per share) | $ / shares 0.00
Outstanding - end of period, Weighted-Average Exercise Price Per Share (in dollars per share) | $ / shares $ 19.30
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]  
Options exercisable - end of period (in shares) | shares 296,436
Options exercisable, Weighted-Average Exercise Price Per Share (in dollars per share) | $ / shares $ 20.92
Outstanding, Weighted-Average Remaining Contractual Life (Years) 2 years 2 months 9 days
Options exercisable, Weighted-Average Remaining Contractual Life (Years) 2 years 2 months 9 days
Outstanding, Aggregate Intrinsic Value | $ $ 480
Options exercisable, Aggregate Intrinsic Value | $ $ 480