Stock-Based Compensation - Summary of Restricted Stock Awards Activity (Details) - Restricted Stock and Restricted Stock Units Awards	3 Months Ended
	Mar. 31, 2017 $ / shares shares
Number of Shares
Non vested, beginning balance (in shares) | shares	437,971
Shares granted (in shares) | shares	243,650
Vested shares (in shares) | shares	(169,241)
Shares forfeited (in shares) | shares	(12,778)
Non vested, ending balance (in shares) | shares	499,602
Weighted-Average Grant Price and Fair Value
Non vested, beginning balance (in dollars per share) | $ / shares	$ 21.54
Shares granted (in dollars per share) | $ / shares	23.25
Vested shares (in dollars per share) | $ / shares	25.76
Shares forfeited (in dollars per share) | $ / shares	21.73
Non vested, ending balance (in dollars per share) | $ / shares	$ 21.20