Stock Incentive Plans - Summary of Stock Option Activity (Details) $ / shares in Units, shares in Thousands, $ in Thousands	9 Months Ended
	Sep. 30, 2015 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding and exercisable as of beginning of period (in shares)	57
Exercised (in shares)	(32)
Outstanding and exercisable as of end of period (in shares)	25
Weighted Average Exercise Price Per Share
Outstanding and exercisable as of beginning of period (in dollars per share) | $ / shares	$ 11.69
Exercised (in dollars per share) | $ / shares	11.78
Outstanding and exercisable as of end of period (in dollars per share) | $ / shares	$ 11.58
Exercised, total intrinsic value of options exercised | $	$ 359
Incentive Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding and exercisable as of beginning of period (in shares)	22
Exercised (in shares)	(22)
Outstanding and exercisable as of end of period (in shares)	0
2006 Plan
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding and exercisable as of beginning of period (in shares)	35
Exercised (in shares)	(10)
Outstanding and exercisable as of end of period (in shares)	25