Stock-Based Compensation - Stock Option Activity (Details) - Stock Options	3 Months Ended
	Mar. 31, 2017 $ / shares shares
Stock Options [Roll Forward]
Beginning, outstanding (in shares) | shares	286,707
Granted (in shares) | shares	0
Exercised (in shares) | shares	0
Canceled (in shares) | shares	(7,712)
Forfeited (in shares) | shares	(4,147)
Ending, outstanding (in shares) | shares	274,848
Exercisable (in shares) | shares	231,858
Weighted Average Exercise Price [Roll Forward]
Beginning, outstanding (in dollars per share) | $ / shares	$ 77.50
Granted (in dollars per share) | $ / shares	0.00
Exercised (in dollars per share) | $ / shares	0.00
Canceled (in dollars per share) | $ / shares	123.97
Forfeited (in dollars per share) | $ / shares	14.00
Ending, outstanding (in dollars per share) | $ / shares	76.83
Exercisable (in dollars per share) | $ / shares	$ 88.21