Stock-Based Compensation - Stock Options Activity (Details) - Stock Options $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2016 USD ($) $ / shares shares
Stock Options
Options outstanding at the beginning of the period (in shares) | shares	1,247
Granted (in shares) | shares	0
Cancelled (in shares) | shares	(331)
Options outstanding at the end of the period (in shares) | shares	916
Options exercisable at the end of the period (in shares) | shares	884
Weighted Average Exercise Price Per Share
Options outstanding at the beginning of the period (in dollars per share) | $ / shares	$ 18.28
Granted (in dollars per share) | $ / shares	0.00
Cancelled (in dollars per share) | $ / shares	22.89
Options outstanding at end of period, (in dollars per share) | $ / shares	16.61
Options exercisable at the end of period (in dollars per share) | $ / shares	$ 16.30
Weighted Average Remaining Life
Outstanding at the end of the period	2 years 3 months 18 days
Exercisable at the end of the period	2 years 2 months 12 days
Aggregate Intrinsic Value
Outstanding at the end of the period (in dollars) | $	$ 384
Exercisable at the end of the period (in dollars) | $	$ 384